Added fortuna files from fortuna tree
diff --git a/gps/utils/Android.mk b/gps/utils/Android.mk
new file mode 100644
index 0000000..0f99907
--- /dev/null
+++ b/gps/utils/Android.mk
@@ -0,0 +1,59 @@
+ifneq ($(BUILD_TINY_ANDROID),true)
+#Compile this library only for builds with the latest modem image
+
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+## Libs
+LOCAL_SHARED_LIBRARIES := \
+    libutils \
+    libcutils \
+    liblog
+
+LOCAL_SRC_FILES += \
+    loc_log.cpp \
+    loc_cfg.cpp \
+    msg_q.c \
+    linked_list.c \
+    loc_target.cpp \
+    loc_timer.c \
+    ../platform_lib_abstractions/elapsed_millis_since_boot.cpp \
+    loc_misc_utils.cpp
+
+LOCAL_CFLAGS += \
+     -fno-short-enums \
+     -D_ANDROID_
+
+ifeq ($(TARGET_BUILD_VARIANT),user)
+   LOCAL_CFLAGS += -DTARGET_BUILD_VARIANT_USER
+endif
+
+LOCAL_LDFLAGS += -Wl,--export-dynamic
+
+## Includes
+LOCAL_C_INCLUDES:= \
+    $(LOCAL_PATH)/../platform_lib_abstractions
+
+LOCAL_COPY_HEADERS_TO:= gps.utils/
+LOCAL_COPY_HEADERS:= \
+   loc_log.h \
+   loc_cfg.h \
+   log_util.h \
+   linked_list.h \
+   msg_q.h \
+   loc_target.h \
+   loc_timer.h \
+   ../platform_lib_abstractions/platform_lib_includes.h \
+   ../platform_lib_abstractions/platform_lib_time.h \
+   ../platform_lib_abstractions/platform_lib_macros.h \
+   loc_misc_utils.h
+
+LOCAL_MODULE := libgps.utils
+
+LOCAL_MODULE_TAGS := optional
+
+LOCAL_PRELINK_MODULE := false
+
+include $(BUILD_SHARED_LIBRARY)
+endif # not BUILD_TINY_ANDROID
diff --git a/gps/utils/Makefile.am b/gps/utils/Makefile.am
new file mode 100644
index 0000000..e5935f0
--- /dev/null
+++ b/gps/utils/Makefile.am
@@ -0,0 +1,44 @@
+AM_CFLAGS = -Wundef \
+         -MD \
+         -Wno-trigraphs \
+         -g -O0 \
+         -fno-inline \
+         -fno-short-enums \
+         -fpic \
+         -I../platform_lib_abstractions
+
+libgps_utils_so_la_h_sources = log_util.h \
+            msg_q.h \
+            linked_list.h \
+            loc_cfg.h \
+            loc_log.h \
+            ../platform_lib_abstractions/platform_lib_includes.h \
+            ../platform_lib_abstractions/platform_lib_time.h \
+            ../platform_lib_abstractions/platform_lib_macros.h
+
+libgps_utils_so_la_c_sources = linked_list.c \
+            msg_q.c \
+            loc_cfg.cpp \
+            loc_log.cpp \
+            ../platform_lib_abstractions/elapsed_millis_since_boot.cpp
+
+library_includedir = $(pkgincludedir)/utils
+
+library_include_HEADERS = $(libgps_utils_so_la_h_sources)
+
+libgps_utils_so_la_SOURCES = $(libgps_utils_so_la_c_sources)
+
+if USE_GLIB
+libgps_utils_so_la_CFLAGS = -DUSE_GLIB $(AM_CFLAGS) @GLIB_CFLAGS@
+libgps_utils_so_la_LDFLAGS = -lstdc++ -lpthread @GLIB_LIBS@ -shared -version-info 1:0:0
+libgps_utils_so_la_CPPFLAGS = -DUSE_GLIB $(AM_CFLAGS) $(AM_CPPFLAGS) @GLIB_CFLAGS@
+else
+libgps_utils_so_la_CFLAGS = $(AM_CFLAGS)
+libgps_utils_so_la_LDFLAGS = -lpthread -shared -version-info 1:0:0
+libgps_utils_so_la_CPPFLAGS = $(AM_CFLAGS) $(AM_CPPFLAGS)
+endif
+
+libgps_utils_so_la_LIBADD = -lstdc++ -lcutils
+
+#Create and Install libraries
+lib_LTLIBRARIES = libgps_utils_so.la
diff --git a/gps/utils/linked_list.c b/gps/utils/linked_list.c
new file mode 100644
index 0000000..92617fe
--- /dev/null
+++ b/gps/utils/linked_list.c
@@ -0,0 +1,328 @@
+/* Copyright (c) 2011, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "linked_list.h"
+#include <stdio.h>
+#include <string.h>
+
+#define LOG_TAG "LocSvc_utils_ll"
+#include "log_util.h"
+#include "platform_lib_includes.h"
+#include <stdlib.h>
+#include <stdint.h>
+
+typedef struct list_element {
+   struct list_element* next;
+   struct list_element* prev;
+   void* data_ptr;
+   void (*dealloc_func)(void*);
+}list_element;
+
+typedef struct list_state {
+   list_element* p_head;
+   list_element* p_tail;
+} list_state;
+
+/* ----------------------- END INTERNAL FUNCTIONS ---------------------------------------- */
+
+/*===========================================================================
+
+  FUNCTION:   linked_list_init
+
+  ===========================================================================*/
+linked_list_err_type linked_list_init(void** list_data)
+{
+   if( list_data == NULL )
+   {
+      LOC_LOGE("%s: Invalid list parameter!\n", __FUNCTION__);
+      return eLINKED_LIST_INVALID_PARAMETER;
+   }
+
+   list_state* tmp_list;
+   tmp_list = (list_state*)calloc(1, sizeof(list_state));
+   if( tmp_list == NULL )
+   {
+      LOC_LOGE("%s: Unable to allocate space for list!\n", __FUNCTION__);
+      return eLINKED_LIST_FAILURE_GENERAL;
+   }
+
+   tmp_list->p_head = NULL;
+   tmp_list->p_tail = NULL;
+
+   *list_data = tmp_list;
+
+   return eLINKED_LIST_SUCCESS;
+}
+
+/*===========================================================================
+
+  FUNCTION:   linked_list_destroy
+
+  ===========================================================================*/
+linked_list_err_type linked_list_destroy(void** list_data)
+{
+   if( list_data == NULL )
+   {
+      LOC_LOGE("%s: Invalid list parameter!\n", __FUNCTION__);
+      return eLINKED_LIST_INVALID_HANDLE;
+   }
+
+   list_state* p_list = (list_state*)*list_data;
+
+   linked_list_flush(p_list);
+
+   free(*list_data);
+   *list_data = NULL;
+
+   return eLINKED_LIST_SUCCESS;
+}
+
+/*===========================================================================
+
+  FUNCTION:   linked_list_add
+
+  ===========================================================================*/
+linked_list_err_type linked_list_add(void* list_data, void *data_obj, void (*dealloc)(void*))
+{
+   LOC_LOGD("%s: Adding to list data_obj = 0x%08X\n", __FUNCTION__, data_obj);
+   if( list_data == NULL )
+   {
+      LOC_LOGE("%s: Invalid list parameter!\n", __FUNCTION__);
+      return eLINKED_LIST_INVALID_HANDLE;
+   }
+
+   if( data_obj == NULL )
+   {
+      LOC_LOGE("%s: Invalid input parameter!\n", __FUNCTION__);
+      return eLINKED_LIST_INVALID_PARAMETER;
+   }
+
+   list_state* p_list = (list_state*)list_data;
+   list_element* elem = (list_element*)malloc(sizeof(list_element));
+   if( elem == NULL )
+   {
+      LOC_LOGE("%s: Memory allocation failed\n", __FUNCTION__);
+      return eLINKED_LIST_FAILURE_GENERAL;
+   }
+
+   /* Copy data to newly created element */
+   elem->data_ptr = data_obj;
+   elem->next = NULL;
+   elem->prev = NULL;
+   elem->dealloc_func = dealloc;
+
+   /* Replace head element */
+   list_element* tmp = p_list->p_head;
+   p_list->p_head = elem;
+   /* Point next to the previous head element */
+   p_list->p_head->next = tmp;
+
+   if( tmp != NULL )
+   {
+      tmp->prev = p_list->p_head;
+   }
+   else
+   {
+      p_list->p_tail = p_list->p_head;
+   }
+
+   return eLINKED_LIST_SUCCESS;
+}
+
+/*===========================================================================
+
+  FUNCTION:   linked_list_remove
+
+  ===========================================================================*/
+linked_list_err_type linked_list_remove(void* list_data, void **data_obj)
+{
+   LOC_LOGD("%s: Removing from list\n", __FUNCTION__);
+   if( list_data == NULL )
+   {
+      LOC_LOGE("%s: Invalid list parameter!\n", __FUNCTION__);
+      return eLINKED_LIST_INVALID_HANDLE;
+   }
+
+   if( data_obj == NULL )
+   {
+      LOC_LOGE("%s: Invalid input parameter!\n", __FUNCTION__);
+      return eLINKED_LIST_INVALID_PARAMETER;
+   }
+
+   list_state* p_list = (list_state*)list_data;
+   if( p_list->p_tail == NULL )
+   {
+      return eLINKED_LIST_UNAVAILABLE_RESOURCE;
+   }
+
+   list_element* tmp = p_list->p_tail;
+
+   /* Replace tail element */
+   p_list->p_tail = tmp->prev;
+
+   if( p_list->p_tail != NULL )
+   {
+      p_list->p_tail->next = NULL;
+   }
+   else
+   {
+      p_list->p_head = p_list->p_tail;
+   }
+
+   /* Copy data to output param */
+   *data_obj = tmp->data_ptr;
+
+   /* Free allocated list element */
+   free(tmp);
+
+   return eLINKED_LIST_SUCCESS;
+}
+
+/*===========================================================================
+
+  FUNCTION:   linked_list_empty
+
+  ===========================================================================*/
+int linked_list_empty(void* list_data)
+{
+   if( list_data == NULL )
+   {
+      LOC_LOGE("%s: Invalid list parameter!\n", __FUNCTION__);
+      return (int)eLINKED_LIST_INVALID_HANDLE;
+   }
+   else
+   {
+      list_state* p_list = (list_state*)list_data;
+      return p_list->p_head == NULL ? 1 : 0;
+   }
+}
+
+/*===========================================================================
+
+  FUNCTION:   linked_list_flush
+
+  ===========================================================================*/
+linked_list_err_type linked_list_flush(void* list_data)
+{
+   if( list_data == NULL )
+   {
+      LOC_LOGE("%s: Invalid list parameter!\n", __FUNCTION__);
+      return eLINKED_LIST_INVALID_HANDLE;
+   }
+
+   list_state* p_list = (list_state*)list_data;
+
+   /* Remove all dynamically allocated elements */
+   while( p_list->p_head != NULL )
+   {
+      list_element* tmp = p_list->p_head->next;
+
+      /* Free data pointer if told to do so. */
+      if( p_list->p_head->dealloc_func != NULL )
+      {
+         p_list->p_head->dealloc_func(p_list->p_head->data_ptr);
+      }
+
+      /* Free list element */
+      free(p_list->p_head);
+
+      p_list->p_head = tmp;
+   }
+
+   p_list->p_tail = NULL;
+
+   return eLINKED_LIST_SUCCESS;
+}
+
+/*===========================================================================
+
+  FUNCTION:   linked_list_search
+
+  ===========================================================================*/
+linked_list_err_type linked_list_search(void* list_data, void **data_p,
+                                        bool (*equal)(void* data_0, void* data),
+                                        void* data_0, bool rm_if_found)
+{
+   LOC_LOGD("%s: Search the list\n", __FUNCTION__);
+   if( list_data == NULL || NULL == equal )
+   {
+      LOC_LOGE("%s: Invalid list parameter! list_data %p equal %p\n",
+               __FUNCTION__, list_data, equal);
+      return eLINKED_LIST_INVALID_HANDLE;
+   }
+
+   list_state* p_list = (list_state*)list_data;
+   if( p_list->p_tail == NULL )
+   {
+      return eLINKED_LIST_UNAVAILABLE_RESOURCE;
+   }
+
+   list_element* tmp = p_list->p_head;
+
+   if (NULL != data_p) {
+     *data_p = NULL;
+   }
+
+   while (NULL != tmp) {
+     if ((*equal)(data_0, tmp->data_ptr)) {
+       if (NULL != data_p) {
+         *data_p = tmp->data_ptr;
+       }
+
+       if (rm_if_found) {
+         if (NULL == tmp->prev) {
+           p_list->p_head = tmp->next;
+         } else {
+           tmp->prev->next = tmp->next;
+         }
+
+         if (NULL == tmp->next) {
+           p_list->p_tail = tmp->prev;
+         } else {
+           tmp->next->prev = tmp->prev;
+         }
+
+         tmp->prev = tmp->next = NULL;
+
+         // dealloc data if it is not copied out && caller
+         // has given us a dealloc function pointer.
+         if (NULL == data_p && NULL != tmp->dealloc_func) {
+             tmp->dealloc_func(tmp->data_ptr);
+         }
+         free(tmp);
+       }
+
+       tmp = NULL;
+     } else {
+       tmp = tmp->next;
+     }
+   }
+
+   return eLINKED_LIST_SUCCESS;
+}
+
diff --git a/gps/utils/linked_list.h b/gps/utils/linked_list.h
new file mode 100644
index 0000000..a85f09a
--- /dev/null
+++ b/gps/utils/linked_list.h
@@ -0,0 +1,217 @@
+/* Copyright (c) 2011, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef __LINKED_LIST_H__
+#define __LINKED_LIST_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+#include <stdbool.h>
+#include <stdlib.h>
+
+/** Linked List Return Codes */
+typedef enum
+{
+  eLINKED_LIST_SUCCESS                             = 0,
+     /**< Request was successful. */
+  eLINKED_LIST_FAILURE_GENERAL                     = -1,
+     /**< Failed because of a general failure. */
+  eLINKED_LIST_INVALID_PARAMETER                   = -2,
+     /**< Failed because the request contained invalid parameters. */
+  eLINKED_LIST_INVALID_HANDLE                      = -3,
+     /**< Failed because an invalid handle was specified. */
+  eLINKED_LIST_UNAVAILABLE_RESOURCE                = -4,
+     /**< Failed because an there were not enough resources. */
+  eLINKED_LIST_INSUFFICIENT_BUFFER                 = -5,
+     /**< Failed because an the supplied buffer was too small. */
+}linked_list_err_type;
+
+/*===========================================================================
+FUNCTION    linked_list_init
+
+DESCRIPTION
+   Initializes internal structures for linked list.
+
+   list_data: State of list to be initialized.
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   Look at error codes above.
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+linked_list_err_type linked_list_init(void** list_data);
+
+/*===========================================================================
+FUNCTION    linked_list_destroy
+
+DESCRIPTION
+   Destroys internal structures for linked list.
+
+   p_list_data: State of list to be destroyed.
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   Look at error codes above.
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+linked_list_err_type linked_list_destroy(void** list_data);
+
+/*===========================================================================
+FUNCTION    linked_list_add
+
+DESCRIPTION
+   Adds an element to the head of the linked list. The passed in data pointer
+   is not modified or freed. Passed in data_obj is expected to live throughout
+   the use of the linked_list (i.e. data is not allocated internally)
+
+   p_list_data:  List to add data to the head of.
+   data_obj:     Pointer to data to add into list
+   dealloc:      Function used to deallocate memory for this element. Pass NULL
+                 if you do not want data deallocated during a flush operation
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   Look at error codes above.
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+linked_list_err_type linked_list_add(void* list_data, void *data_obj, void (*dealloc)(void*));
+
+/*===========================================================================
+FUNCTION    linked_list_remove
+
+DESCRIPTION
+   Retrieves data from the list tail. data_obj is the tail element from the list
+   passed in by linked_list_add.
+
+   p_list_data:  List to remove the tail from.
+   data_obj:     Pointer to data removed from list
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   Look at error codes above.
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+linked_list_err_type linked_list_remove(void* list_data, void **data_obj);
+
+/*===========================================================================
+FUNCTION    linked_list_empty
+
+DESCRIPTION
+   Tells whether the list currently contains any elements
+
+   p_list_data:  List to check if empty.
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   0/FALSE : List contains elements
+   1/TRUE  : List is Empty
+   Otherwise look at error codes above.
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+int linked_list_empty(void* list_data);
+
+/*===========================================================================
+FUNCTION    linked_list_flush
+
+DESCRIPTION
+   Removes all elements from the list and deallocates them using the provided
+   dealloc function while adding elements.
+
+   p_list_data:  List to remove all elements from.
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   Look at error codes above.
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+linked_list_err_type linked_list_flush(void* list_data);
+
+/*===========================================================================
+FUNCTION    linked_list_search
+
+DESCRIPTION
+   Searches for an element in the linked list.
+
+   p_list_data:  List handle.
+   data_p:       to be stored with the data found; NUll if no match.
+                 if data_p passed in as NULL, then no write to it.
+   equal:        Function ptr takes in a list element, and returns
+                 indication if this the one looking for.
+   data_0:       The data being compared against.
+   rm_if_found:  Should data be removed if found?
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   Look at error codes above.
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+linked_list_err_type linked_list_search(void* list_data, void **data_p,
+                                        bool (*equal)(void* data_0, void* data),
+                                        void* data_0, bool rm_if_found);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __LINKED_LIST_H__ */
diff --git a/gps/utils/loc_cfg.cpp b/gps/utils/loc_cfg.cpp
new file mode 100644
index 0000000..7ffe6a4
--- /dev/null
+++ b/gps/utils/loc_cfg.cpp
@@ -0,0 +1,399 @@
+/* Copyright (c) 2011-2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#define LOG_NDDEBUG 0
+#define LOG_TAG "LocSvc_utils_cfg"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <pthread.h>
+#include <string.h>
+#include <ctype.h>
+#include <unistd.h>
+#include <time.h>
+#include <loc_cfg.h>
+#include <log_util.h>
+#include <loc_misc_utils.h>
+#ifdef USE_GLIB
+#include <glib.h>
+#endif
+#include "platform_lib_includes.h"
+
+/*=============================================================================
+ *
+ *                          GLOBAL DATA DECLARATION
+ *
+ *============================================================================*/
+
+/* Parameter data */
+static uint8_t DEBUG_LEVEL = 0xff;
+static uint8_t TIMESTAMP = 0;
+
+/* Parameter spec table */
+static loc_param_s_type loc_param_table[] =
+{
+    {"DEBUG_LEVEL",    &DEBUG_LEVEL, NULL,    'n'},
+    {"TIMESTAMP",      &TIMESTAMP,   NULL,    'n'},
+};
+int loc_param_num = sizeof(loc_param_table) / sizeof(loc_param_s_type);
+
+typedef struct loc_param_v_type
+{
+    char* param_name;
+    char* param_str_value;
+    int param_int_value;
+    double param_double_value;
+}loc_param_v_type;
+
+/*===========================================================================
+FUNCTION loc_set_config_entry
+
+DESCRIPTION
+   Potentially sets a given configuration table entry based on the passed in
+   configuration value. This is done by using a string comparison of the
+   parameter names and those found in the configuration file.
+
+PARAMETERS:
+   config_entry: configuration entry in the table to possibly set
+   config_value: value to store in the entry if the parameter names match
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   None
+
+SIDE EFFECTS
+   N/A
+===========================================================================*/
+int loc_set_config_entry(loc_param_s_type* config_entry, loc_param_v_type* config_value)
+{
+    int ret=-1;
+    if(NULL == config_entry || NULL == config_value)
+    {
+        LOC_LOGE("%s: INVALID config entry or parameter", __FUNCTION__);
+        return ret;
+    }
+
+    if (strcmp(config_entry->param_name, config_value->param_name) == 0 &&
+        config_entry->param_ptr)
+    {
+        switch (config_entry->param_type)
+        {
+        case 's':
+            if (strcmp(config_value->param_str_value, "NULL") == 0)
+            {
+                *((char*)config_entry->param_ptr) = '\0';
+            }
+            else {
+                strlcpy((char*) config_entry->param_ptr,
+                        config_value->param_str_value,
+                        LOC_MAX_PARAM_STRING + 1);
+            }
+            /* Log INI values */
+            LOC_LOGD("%s: PARAM %s = %s", __FUNCTION__,
+                     config_entry->param_name, (char*)config_entry->param_ptr);
+
+            if(NULL != config_entry->param_set)
+            {
+                *(config_entry->param_set) = 1;
+            }
+            ret = 0;
+            break;
+        case 'n':
+            *((int *)config_entry->param_ptr) = config_value->param_int_value;
+            /* Log INI values */
+            LOC_LOGD("%s: PARAM %s = %d", __FUNCTION__,
+                     config_entry->param_name, config_value->param_int_value);
+
+            if(NULL != config_entry->param_set)
+            {
+                *(config_entry->param_set) = 1;
+            }
+            ret = 0;
+            break;
+        case 'f':
+            *((double *)config_entry->param_ptr) = config_value->param_double_value;
+            /* Log INI values */
+            LOC_LOGD("%s: PARAM %s = %f", __FUNCTION__,
+                     config_entry->param_name, config_value->param_double_value);
+
+            if(NULL != config_entry->param_set)
+            {
+                *(config_entry->param_set) = 1;
+            }
+            ret = 0;
+            break;
+        default:
+            LOC_LOGE("%s: PARAM %s parameter type must be n, f, or s",
+                     __FUNCTION__, config_entry->param_name);
+        }
+    }
+    return ret;
+}
+
+/*===========================================================================
+FUNCTION loc_fill_conf_item
+
+DESCRIPTION
+   Takes a line of configuration item and sets defined values based on
+   the passed in configuration table. This table maps strings to values to
+   set along with the type of each of these values.
+
+PARAMETERS:
+   input_buf : buffer contanis config item
+   config_table: table definition of strings to places to store information
+   table_length: length of the configuration table
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   0: Number of records in the config_table filled with input_buf
+
+SIDE EFFECTS
+   N/A
+===========================================================================*/
+int loc_fill_conf_item(char* input_buf,
+                       loc_param_s_type* config_table, uint32_t table_length)
+{
+    int ret = 0;
+
+    if (input_buf && config_table) {
+        char *lasts;
+        loc_param_v_type config_value;
+        memset(&config_value, 0, sizeof(config_value));
+
+        /* Separate variable and value */
+        config_value.param_name = strtok_r(input_buf, "=", &lasts);
+        /* skip lines that do not contain "=" */
+        if (config_value.param_name) {
+            config_value.param_str_value = strtok_r(NULL, "=", &lasts);
+
+            /* skip lines that do not contain two operands */
+            if (config_value.param_str_value) {
+                /* Trim leading and trailing spaces */
+                loc_util_trim_space(config_value.param_name);
+                loc_util_trim_space(config_value.param_str_value);
+
+                /* Parse numerical value */
+                if ((strlen(config_value.param_str_value) >=3) &&
+                    (config_value.param_str_value[0] == '0') &&
+                    (tolower(config_value.param_str_value[1]) == 'x'))
+                {
+                    /* hex */
+                    config_value.param_int_value = (int) strtol(&config_value.param_str_value[2],
+                                                                (char**) NULL, 16);
+                }
+                else {
+                    config_value.param_double_value = (double) atof(config_value.param_str_value); /* float */
+                    config_value.param_int_value = atoi(config_value.param_str_value); /* dec */
+                }
+
+                for(uint32_t i = 0; NULL != config_table && i < table_length; i++)
+                {
+                    if(!loc_set_config_entry(&config_table[i], &config_value)) {
+                        ret += 1;
+                    }
+                }
+            }
+        }
+    }
+
+    return ret;
+}
+
+/*===========================================================================
+FUNCTION loc_read_conf_r (repetitive)
+
+DESCRIPTION
+   Reads the specified configuration file and sets defined values based on
+   the passed in configuration table. This table maps strings to values to
+   set along with the type of each of these values.
+   The difference between this and loc_read_conf is that this function returns
+   the file pointer position at the end of filling a config table. Also, it
+   reads a fixed number of parameters at a time which is equal to the length
+   of the configuration table. This functionality enables the caller to
+   repeatedly call the function to read data from the same file.
+
+PARAMETERS:
+   conf_fp : file pointer
+   config_table: table definition of strings to places to store information
+   table_length: length of the configuration table
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   0: Table filled successfully
+   1: No more parameters to read
+  -1: Error filling table
+
+SIDE EFFECTS
+   N/A
+===========================================================================*/
+int loc_read_conf_r(FILE *conf_fp, loc_param_s_type* config_table, uint32_t table_length)
+{
+    int ret=0;
+
+    unsigned int num_params=table_length;
+    if(conf_fp == NULL) {
+        LOC_LOGE("%s:%d]: ERROR: File pointer is NULL\n", __func__, __LINE__);
+        ret = -1;
+        goto err;
+    }
+
+    /* Clear all validity bits */
+    for(uint32_t i = 0; NULL != config_table && i < table_length; i++)
+    {
+        if(NULL != config_table[i].param_set)
+        {
+            *(config_table[i].param_set) = 0;
+        }
+    }
+
+    char input_buf[LOC_MAX_PARAM_LINE];  /* declare a char array */
+
+    LOC_LOGD("%s:%d]: num_params: %d\n", __func__, __LINE__, num_params);
+    while(num_params)
+    {
+        if(!fgets(input_buf, LOC_MAX_PARAM_LINE, conf_fp)) {
+            LOC_LOGD("%s:%d]: fgets returned NULL\n", __func__, __LINE__);
+            break;
+        }
+
+        num_params -= loc_fill_conf_item(input_buf, config_table, table_length);
+    }
+
+err:
+    return ret;
+}
+
+/*===========================================================================
+FUNCTION loc_udpate_conf
+
+DESCRIPTION
+   Parses the passed in buffer for configuration items, and update the table
+   that is also passed in.
+
+Reads the specified configuration file and sets defined values based on
+   the passed in configuration table. This table maps strings to values to
+   set along with the type of each of these values.
+
+PARAMETERS:
+   conf_data: configuration items in bufferas a string
+   length: strlen(conf_data)
+   config_table: table definition of strings to places to store information
+   table_length: length of the configuration table
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   number of the records in the table that is updated at time of return.
+
+SIDE EFFECTS
+   N/A
+===========================================================================*/
+int loc_update_conf(const char* conf_data, int32_t length,
+                    loc_param_s_type* config_table, uint32_t table_length)
+{
+    int ret = -1;
+
+    if (conf_data && length && config_table && table_length) {
+        // make a copy, so we do not tokenize the original data
+        char* conf_copy = (char*)malloc(length+1);
+
+        if(conf_copy !=NULL)
+        {
+          memcpy(conf_copy, conf_data, length);
+          // we hard NULL the end of string to be safe
+          conf_copy[length] = 0;
+        }
+
+        // start with one record off
+        uint32_t num_params = table_length - 1;
+        char* saveptr = NULL;
+        char* input_buf = strtok_r(conf_copy, "\n", &saveptr);
+        ret = 0;
+
+        LOC_LOGD("%s:%d]: num_params: %d\n", __func__, __LINE__, num_params);
+        while(num_params && input_buf) {
+            ret++;
+            num_params -= loc_fill_conf_item(input_buf, config_table, table_length);
+            input_buf = strtok_r(NULL, "\n", &saveptr);
+        }
+    }
+
+    return ret;
+}
+
+/*===========================================================================
+FUNCTION loc_read_conf
+
+DESCRIPTION
+   Reads the specified configuration file and sets defined values based on
+   the passed in configuration table. This table maps strings to values to
+   set along with the type of each of these values.
+
+PARAMETERS:
+   conf_file_name: configuration file to read
+   config_table: table definition of strings to places to store information
+   table_length: length of the configuration table
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   None
+
+SIDE EFFECTS
+   N/A
+===========================================================================*/
+void loc_read_conf(const char* conf_file_name, loc_param_s_type* config_table,
+                   uint32_t table_length)
+{
+    FILE *conf_fp = NULL;
+    char *lasts;
+    loc_param_v_type config_value;
+    uint32_t i;
+
+    if((conf_fp = fopen(conf_file_name, "r")) != NULL)
+    {
+        LOC_LOGD("%s: using %s", __FUNCTION__, conf_file_name);
+        if(table_length && config_table) {
+            loc_read_conf_r(conf_fp, config_table, table_length);
+            rewind(conf_fp);
+        }
+        loc_read_conf_r(conf_fp, loc_param_table, loc_param_num);
+        fclose(conf_fp);
+    }
+    /* Initialize logging mechanism with parsed data */
+    loc_logger_init(DEBUG_LEVEL, TIMESTAMP);
+}
diff --git a/gps/utils/loc_cfg.h b/gps/utils/loc_cfg.h
new file mode 100644
index 0000000..ea4865b
--- /dev/null
+++ b/gps/utils/loc_cfg.h
@@ -0,0 +1,91 @@
+/* Copyright (c) 2011-2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef LOC_CFG_H
+#define LOC_CFG_H
+
+#include <stdio.h>
+#include <stdint.h>
+
+#define LOC_MAX_PARAM_NAME                 80
+#define LOC_MAX_PARAM_STRING               80
+#define LOC_MAX_PARAM_LINE    (LOC_MAX_PARAM_NAME + LOC_MAX_PARAM_STRING)
+
+#define UTIL_UPDATE_CONF(conf_data, len, config_table) \
+    loc_update_conf((conf_data), (len), (config_table), \
+                    sizeof(config_table) / sizeof(config_table[0]))
+
+#define UTIL_READ_CONF_DEFAULT(filename) \
+    loc_read_conf((filename), NULL, 0);
+
+#define UTIL_READ_CONF(filename, config_table) \
+    loc_read_conf((filename), (config_table), sizeof(config_table) / sizeof(config_table[0]))
+
+/*=============================================================================
+ *
+ *                        MODULE TYPE DECLARATION
+ *
+ *============================================================================*/
+typedef struct
+{
+  char                           param_name[LOC_MAX_PARAM_NAME];
+  void                          *param_ptr;
+  uint8_t                       *param_set;   /* was this value set by config file? */
+  char                           param_type;  /* 'n' for number,
+                                                 's' for string,
+                                                 'f' for float */
+} loc_param_s_type;
+
+/*=============================================================================
+ *
+ *                          MODULE EXTERNAL DATA
+ *
+ *============================================================================*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*=============================================================================
+ *
+ *                       MODULE EXPORTED FUNCTIONS
+ *
+ *============================================================================*/
+void loc_read_conf(const char* conf_file_name,
+                   loc_param_s_type* config_table,
+                   uint32_t table_length);
+int loc_read_conf_r(FILE *conf_fp, loc_param_s_type* config_table,
+                    uint32_t table_length);
+int loc_update_conf(const char* conf_data, int32_t length,
+                    loc_param_s_type* config_table, uint32_t table_length);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LOC_CFG_H */
diff --git a/gps/utils/loc_log.cpp b/gps/utils/loc_log.cpp
new file mode 100644
index 0000000..18182b7
--- /dev/null
+++ b/gps/utils/loc_log.cpp
@@ -0,0 +1,241 @@
+/* Copyright (c) 2011-2012, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#define LOG_NDDEBUG 0
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/time.h>
+#include "loc_log.h"
+#include "msg_q.h"
+#ifdef USE_GLIB
+#include <time.h>
+#endif /* USE_GLIB  */
+#include "log_util.h"
+#include "platform_lib_includes.h"
+
+#define  BUFFER_SIZE  120
+
+// Logging Improvements
+const char *loc_logger_boolStr[]={"False","True"};
+const char VOID_RET[]   = "None";
+const char FROM_AFW[]   = "===>";
+const char TO_MODEM[]   = "--->";
+const char FROM_MODEM[] = "<---";
+const char TO_AFW[]     = "<===";
+const char EXIT_TAG[]   = "Exiting";
+const char ENTRY_TAG[]  = "Entering";
+
+/* Logging Mechanism */
+loc_logger_s_type loc_logger;
+
+/* Get names from value */
+const char* loc_get_name_from_mask(loc_name_val_s_type table[], int table_size, long mask)
+{
+   int i;
+   for (i = 0; i < table_size; i++)
+   {
+      if (table[i].val & (long) mask)
+      {
+         return table[i].name;
+      }
+   }
+   return UNKNOWN_STR;
+}
+
+/* Get names from value */
+const char* loc_get_name_from_val(loc_name_val_s_type table[], int table_size, long value)
+{
+   int i;
+   for (i = 0; i < table_size; i++)
+   {
+      if (table[i].val == (long) value)
+      {
+         return table[i].name;
+      }
+   }
+   return UNKNOWN_STR;
+}
+
+static loc_name_val_s_type loc_msg_q_status[] =
+{
+    NAME_VAL( eMSG_Q_SUCCESS ),
+    NAME_VAL( eMSG_Q_FAILURE_GENERAL ),
+    NAME_VAL( eMSG_Q_INVALID_PARAMETER ),
+    NAME_VAL( eMSG_Q_INVALID_HANDLE ),
+    NAME_VAL( eMSG_Q_UNAVAILABLE_RESOURCE ),
+    NAME_VAL( eMSG_Q_INSUFFICIENT_BUFFER )
+};
+static int loc_msg_q_status_num = sizeof(loc_msg_q_status) / sizeof(loc_name_val_s_type);
+
+/* Find msg_q status name */
+const char* loc_get_msg_q_status(int status)
+{
+   return loc_get_name_from_val(loc_msg_q_status, loc_msg_q_status_num, (long) status);
+}
+
+const char* log_succ_fail_string(int is_succ)
+{
+   return is_succ? "successful" : "failed";
+}
+
+//Target names
+loc_name_val_s_type target_name[] =
+{
+    NAME_VAL(GNSS_NONE),
+    NAME_VAL(GNSS_MSM),
+    NAME_VAL(GNSS_GSS),
+    NAME_VAL(GNSS_MDM),
+    NAME_VAL(GNSS_QCA1530),
+    NAME_VAL(GNSS_AUTO),
+    NAME_VAL(GNSS_UNKNOWN)
+};
+
+static int target_name_num = sizeof(target_name)/sizeof(loc_name_val_s_type);
+
+/*===========================================================================
+
+FUNCTION loc_get_target_name
+
+DESCRIPTION
+   Returns pointer to a string that contains name of the target
+
+   XX:XX:XX.000\0
+
+RETURN VALUE
+   The target name string
+
+===========================================================================*/
+const char *loc_get_target_name(unsigned int target)
+{
+    int index = 0;
+    static char ret[BUFFER_SIZE];
+
+    index =  getTargetGnssType(target);
+    if( index >= target_name_num || index < 0)
+        index = target_name_num - 1;
+
+    if( (target & HAS_SSC) == HAS_SSC ) {
+        snprintf(ret, sizeof(ret), " %s with SSC",
+           loc_get_name_from_val(target_name, target_name_num, (long)index) );
+    }
+    else {
+       snprintf(ret, sizeof(ret), " %s  without SSC",
+           loc_get_name_from_val(target_name, target_name_num, (long)index) );
+    }
+    return ret;
+}
+
+
+/*===========================================================================
+
+FUNCTION loc_get_time
+
+DESCRIPTION
+   Logs a callback event header.
+   The pointer time_string should point to a buffer of at least 13 bytes:
+
+   XX:XX:XX.000\0
+
+RETURN VALUE
+   The time string
+
+===========================================================================*/
+char *loc_get_time(char *time_string, unsigned long buf_size)
+{
+   struct timeval now;     /* sec and usec     */
+   struct tm now_tm;       /* broken-down time */
+   char hms_string[80];    /* HH:MM:SS         */
+
+   gettimeofday(&now, NULL);
+   localtime_r(&now.tv_sec, &now_tm);
+
+   strftime(hms_string, sizeof hms_string, "%H:%M:%S", &now_tm);
+   snprintf(time_string, buf_size, "%s.%03d", hms_string, (int) (now.tv_usec / 1000));
+
+   return time_string;
+}
+
+
+/*===========================================================================
+FUNCTION loc_logger_init
+
+DESCRIPTION
+   Initializes the state of DEBUG_LEVEL and TIMESTAMP
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   None
+
+SIDE EFFECTS
+   N/A
+===========================================================================*/
+void loc_logger_init(unsigned long debug, unsigned long timestamp)
+{
+   loc_logger.DEBUG_LEVEL = debug;
+#ifdef TARGET_BUILD_VARIANT_USER
+   // force user builds to 2 or less
+   if (loc_logger.DEBUG_LEVEL > 2) {
+       loc_logger.DEBUG_LEVEL = 2;
+   }
+#endif
+   loc_logger.TIMESTAMP   = timestamp;
+}
+
+
+/*===========================================================================
+FUNCTION get_timestamp
+
+DESCRIPTION
+   Generates a timestamp using the current system time
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   Char pointer to the parameter str
+
+SIDE EFFECTS
+   N/A
+===========================================================================*/
+char * get_timestamp(char *str, unsigned long buf_size)
+{
+  struct timeval tv;
+  struct timezone tz;
+  int hh, mm, ss;
+  gettimeofday(&tv, &tz);
+  hh = tv.tv_sec/3600%24;
+  mm = (tv.tv_sec%3600)/60;
+  ss = tv.tv_sec%60;
+  snprintf(str, buf_size, "%02d:%02d:%02d.%06ld", hh, mm, ss, tv.tv_usec);
+  return str;
+}
+
diff --git a/gps/utils/loc_log.h b/gps/utils/loc_log.h
new file mode 100644
index 0000000..82dc636
--- /dev/null
+++ b/gps/utils/loc_log.h
@@ -0,0 +1,68 @@
+/* Copyright (c) 2011-2012, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef LOC_LOG_H
+#define LOC_LOG_H
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <ctype.h>
+#include "loc_target.h"
+
+typedef struct
+{
+   char                 name[128];
+   long                 val;
+} loc_name_val_s_type;
+
+#define NAME_VAL(x) {"" #x "", x }
+
+#define UNKNOWN_STR "UNKNOWN"
+
+#define CHECK_MASK(type, value, mask_var, mask) \
+   ((mask_var & mask) ? (type) value : (type) (-1))
+
+/* Get names from value */
+const char* loc_get_name_from_mask(loc_name_val_s_type table[], int table_size, long mask);
+const char* loc_get_name_from_val(loc_name_val_s_type table[], int table_size, long value);
+const char* loc_get_msg_q_status(int status);
+const char* loc_get_target_name(unsigned int target);
+
+extern const char* log_succ_fail_string(int is_succ);
+
+extern char *loc_get_time(char *time_string, unsigned long buf_size);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LOC_LOG_H */
diff --git a/gps/utils/loc_misc_utils.cpp b/gps/utils/loc_misc_utils.cpp
new file mode 100644
index 0000000..7e96313
--- /dev/null
+++ b/gps/utils/loc_misc_utils.cpp
@@ -0,0 +1,114 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#include <stdio.h>
+#include <string.h>
+#include <log_util.h>
+#include <loc_misc_utils.h>
+#include <ctype.h>
+
+#define LOG_NDDEBUG 0
+#define LOG_TAG "LocSvc_misc_utils"
+
+int loc_util_split_string(char *raw_string, char **split_strings_ptr,
+                          int max_num_substrings, char delimiter)
+{
+    int raw_string_index=0;
+    int num_split_strings=0;
+    unsigned char end_string=0;
+    int raw_string_length=0;
+
+    if(!raw_string || !split_strings_ptr) {
+        LOC_LOGE("%s:%d]: NULL parameters", __func__, __LINE__);
+        num_split_strings = -1;
+        goto err;
+    }
+    LOC_LOGD("%s:%d]: raw string: %s\n", __func__, __LINE__, raw_string);
+    raw_string_length = strlen(raw_string) + 1;
+    split_strings_ptr[num_split_strings] = &raw_string[raw_string_index];
+    for(raw_string_index=0; raw_string_index < raw_string_length; raw_string_index++) {
+        if(raw_string[raw_string_index] == '\0')
+            end_string=1;
+        if((raw_string[raw_string_index] == delimiter) || end_string) {
+            raw_string[raw_string_index] = '\0';
+            LOC_LOGD("%s:%d]: split string: %s\n",
+                     __func__, __LINE__, split_strings_ptr[num_split_strings]);
+            num_split_strings++;
+            if(((raw_string_index + 1) < raw_string_length) &&
+               (num_split_strings < max_num_substrings)) {
+                split_strings_ptr[num_split_strings] = &raw_string[raw_string_index+1];
+            }
+            else {
+                break;
+            }
+        }
+        if(end_string)
+            break;
+    }
+err:
+    LOC_LOGD("%s:%d]: num_split_strings: %d\n", __func__, __LINE__, num_split_strings);
+    return num_split_strings;
+}
+
+void loc_util_trim_space(char *org_string)
+{
+    char *scan_ptr, *write_ptr;
+    char *first_nonspace = NULL, *last_nonspace = NULL;
+
+    if(org_string == NULL) {
+        LOC_LOGE("%s:%d]: NULL parameter", __func__, __LINE__);
+        goto err;
+    }
+
+    scan_ptr = write_ptr = org_string;
+
+    while (*scan_ptr) {
+        //Find the first non-space character
+        if ( !isspace(*scan_ptr) && first_nonspace == NULL) {
+            first_nonspace = scan_ptr;
+        }
+        //Once the first non-space character is found in the
+        //above check, keep shifting the characters to the left
+        //to replace the spaces
+        if (first_nonspace != NULL) {
+            *(write_ptr++) = *scan_ptr;
+            //Keep track of which was the last non-space character
+            //encountered
+            //last_nonspace will not be updated in the case where
+            //the string ends with spaces
+            if ( !isspace(*scan_ptr)) {
+                last_nonspace = write_ptr;
+            }
+        }
+        scan_ptr++;
+    }
+    //Add NULL terminator after the last non-space character
+    if (last_nonspace) { *last_nonspace = '\0'; }
+err:
+    return;
+}
diff --git a/gps/utils/loc_misc_utils.h b/gps/utils/loc_misc_utils.h
new file mode 100644
index 0000000..7d66d84
--- /dev/null
+++ b/gps/utils/loc_misc_utils.h
@@ -0,0 +1,99 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#ifndef _LOC_MISC_UTILS_H_
+#define _LOC_MISC_UTILS_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*===========================================================================
+FUNCTION loc_split_string
+
+DESCRIPTION:
+    This function is used to split a delimiter separated string into
+    sub-strings. This function does not allocate new memory to store the split
+    strings. Instead, it places '\0' in places of delimiters and assings the
+    starting address of the substring within the raw string as the string address
+    The input raw_string no longer remains to be a collection of sub-strings
+    after this function is executed.
+    Please make a copy of the input string before calling this function if
+    necessary
+
+PARAMETERS:
+    char *raw_string: is the original string with delimiter separated substrings
+    char **split_strings_ptr: is the arraw of pointers which will hold the addresses
+                              of individual substrings
+    int max_num_substrings: is the maximum number of substrings that are expected
+                            by the caller. The array of pointers in the above parameter
+                            is usually this long
+    char delimiter: is the delimiter that separates the substrings. Examples: ' ', ';'
+
+DEPENDENCIES
+    N/A
+
+RETURN VALUE
+    int Number of split strings
+
+SIDE EFFECTS
+    The input raw_string no longer remains a delimiter separated single string.
+
+EXAMPLE
+    delimiter = ' ' //space
+    raw_string = "hello new user" //delimiter is space ' '
+    addresses  =  0123456789abcd
+    split_strings_ptr[0] = &raw_string[0]; //split_strings_ptr[0] contains "hello"
+    split_strings_ptr[1] = &raw_string[6]; //split_strings_ptr[1] contains "new"
+    split_strings_ptr[2] = &raw_string[a]; //split_strings_ptr[2] contains "user"
+
+===========================================================================*/
+int loc_util_split_string(char *raw_string, char **split_strings_ptr, int max_num_substrings,
+                     char delimiter);
+
+/*===========================================================================
+FUNCTION trim_space
+
+DESCRIPTION
+   Removes leading and trailing spaces of the string
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   None
+
+SIDE EFFECTS
+   N/A
+===========================================================================*/
+void loc_util_trim_space(char *org_string);
+#ifdef __cplusplus
+}
+#endif
+
+#endif //_LOC_MISC_UTILS_H_
diff --git a/gps/utils/loc_target.cpp b/gps/utils/loc_target.cpp
new file mode 100644
index 0000000..08f5584
--- /dev/null
+++ b/gps/utils/loc_target.cpp
@@ -0,0 +1,260 @@
+/* Copyright (c) 2012-2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <hardware/gps.h>
+#include <cutils/properties.h>
+#include "loc_target.h"
+#include "loc_log.h"
+#include "log_util.h"
+
+#define APQ8064_ID_1 "109"
+#define APQ8064_ID_2 "153"
+#define MPQ8064_ID_1 "130"
+#define MSM8930_ID_1 "142"
+#define MSM8930_ID_2 "116"
+#define APQ8030_ID_1 "157"
+#define APQ8074_ID_1 "184"
+
+#define LINE_LEN 100
+#define STR_LIQUID    "Liquid"
+#define STR_SURF      "Surf"
+#define STR_MTP       "MTP"
+#define STR_APQ       "apq"
+#define STR_AUTO      "auto"
+#define IS_STR_END(c) ((c) == '\0' || (c) == '\n' || (c) == '\r')
+#define LENGTH(s) (sizeof(s) - 1)
+#define GPS_CHECK_NO_ERROR 0
+#define GPS_CHECK_NO_GPS_HW 1
+/* When system server is started, it uses 20 seconds as ActivityManager
+ * timeout. After that it sends SIGSTOP signal to process.
+ */
+#define QCA1530_DETECT_TIMEOUT 15
+#define QCA1530_DETECT_PRESENT "yes"
+#define QCA1530_DETECT_PROGRESS "detect"
+
+static unsigned int gTarget = (unsigned int)-1;
+
+static int read_a_line(const char * file_path, char * line, int line_size)
+{
+    FILE *fp;
+    int result = 0;
+
+    * line = '\0';
+    fp = fopen(file_path, "r" );
+    if( fp == NULL ) {
+        LOC_LOGE("open failed: %s: %s\n", file_path, strerror(errno));
+        result = -1;
+    } else {
+        int len;
+        fgets(line, line_size, fp);
+        len = strlen(line);
+        len = len < line_size - 1? len : line_size - 1;
+        line[len] = '\0';
+        LOC_LOGD("cat %s: %s", file_path, line);
+        fclose(fp);
+    }
+    return result;
+}
+
+/*!
+ * \brief Checks if QCA1530 is avalable.
+ *
+ * Function verifies if qca1530 SoC is configured on the device. The test is
+ * based on property value. For 1530 scenario, the value shall be one of the
+ * following: "yes", "no", "detect". All other values are treated equally to
+ * "no". When the value is "detect" the system waits for SoC detection to
+ * finish before returning result.
+ *
+ * \retval true - QCA1530 is available.
+ * \retval false - QCA1530 is not available.
+ */
+static bool is_qca1530(void)
+{
+    static const char qca1530_property_name[] = "sys.qca1530";
+    bool res = false;
+    int ret, i;
+    char buf[PROPERTY_VALUE_MAX];
+
+    memset(buf, 0, sizeof(buf));
+
+    for (i = 0; i < QCA1530_DETECT_TIMEOUT; ++i)
+    {
+        ret = property_get(qca1530_property_name, buf, NULL);
+        if (ret < 0)
+        {
+            LOC_LOGV( "qca1530: property %s is not accessible, ret=%d",
+                  qca1530_property_name,
+                  ret);
+
+            break;
+        }
+
+        LOC_LOGV( "qca1530: property %s is set to %s",
+                  qca1530_property_name,
+                  buf);
+
+        if (!memcmp(buf, QCA1530_DETECT_PRESENT,
+                    sizeof(QCA1530_DETECT_PRESENT)))
+        {
+            res = true;
+            break;
+        }
+        if (!memcmp(buf, QCA1530_DETECT_PROGRESS,
+                    sizeof(QCA1530_DETECT_PROGRESS)))
+        {
+            LOC_LOGV("qca1530: SoC detection is in progress.");
+            sleep(1);
+            continue;
+        }
+        break;
+    }
+
+    LOC_LOGD("qca1530: detected=%s", res ? "true" : "false");
+    return res;
+}
+
+/*The character array passed to this function should have length
+  of atleast PROPERTY_VALUE_MAX*/
+void loc_get_target_baseband(char *baseband, int array_length)
+{
+    if(baseband && (array_length >= PROPERTY_VALUE_MAX)) {
+        property_get("ro.baseband", baseband, "");
+        LOC_LOGD("%s:%d]: Baseband: %s\n", __func__, __LINE__, baseband);
+    }
+    else {
+        LOC_LOGE("%s:%d]: NULL parameter or array length less than PROPERTY_VALUE_MAX\n",
+                 __func__, __LINE__);
+    }
+}
+
+/*The character array passed to this function should have length
+  of atleast PROPERTY_VALUE_MAX*/
+void loc_get_platform_name(char *platform_name, int array_length)
+{
+    if(platform_name && (array_length >= PROPERTY_VALUE_MAX)) {
+        property_get("ro.board.platform", platform_name, "");
+        LOC_LOGD("%s:%d]: Target name: %s\n", __func__, __LINE__, platform_name);
+    }
+    else {
+        LOC_LOGE("%s:%d]: Null parameter or array length less than PROPERTY_VALUE_MAX\n",
+                 __func__, __LINE__);
+    }
+}
+
+unsigned int loc_get_target(void)
+{
+    if (gTarget != (unsigned int)-1)
+        return gTarget;
+
+    static const char hw_platform[]      = "/sys/devices/soc0/hw_platform";
+    static const char id[]               = "/sys/devices/soc0/soc_id";
+    static const char hw_platform_dep[]  =
+        "/sys/devices/system/soc/soc0/hw_platform";
+    static const char id_dep[]           = "/sys/devices/system/soc/soc0/id";
+    static const char mdm[]              = "/dev/mdm"; // No such file or directory
+
+    char rd_hw_platform[LINE_LEN];
+    char rd_id[LINE_LEN];
+    char rd_mdm[LINE_LEN];
+    char baseband[LINE_LEN];
+
+    if (is_qca1530()) {
+        gTarget = TARGET_QCA1530;
+        goto detected;
+    }
+
+    loc_get_target_baseband(baseband, sizeof(baseband));
+
+    if (!access(hw_platform, F_OK)) {
+        read_a_line(hw_platform, rd_hw_platform, LINE_LEN);
+    } else {
+        read_a_line(hw_platform_dep, rd_hw_platform, LINE_LEN);
+    }
+    if (!access(id, F_OK)) {
+        read_a_line(id, rd_id, LINE_LEN);
+    } else {
+        read_a_line(id_dep, rd_id, LINE_LEN);
+    }
+    if( !memcmp(baseband, STR_AUTO, LENGTH(STR_AUTO)) )
+    {
+          gTarget = TARGET_AUTO;
+          goto detected;
+    }
+    if( !memcmp(baseband, STR_APQ, LENGTH(STR_APQ)) ){
+
+        if( !memcmp(rd_id, MPQ8064_ID_1, LENGTH(MPQ8064_ID_1))
+            && IS_STR_END(rd_id[LENGTH(MPQ8064_ID_1)]) )
+            gTarget = TARGET_MPQ;
+        else
+            gTarget = TARGET_APQ_SA;
+    }
+    else {
+        if( (!memcmp(rd_hw_platform, STR_LIQUID, LENGTH(STR_LIQUID))
+             && IS_STR_END(rd_hw_platform[LENGTH(STR_LIQUID)])) ||
+            (!memcmp(rd_hw_platform, STR_SURF,   LENGTH(STR_SURF))
+             && IS_STR_END(rd_hw_platform[LENGTH(STR_SURF)])) ||
+            (!memcmp(rd_hw_platform, STR_MTP,   LENGTH(STR_MTP))
+             && IS_STR_END(rd_hw_platform[LENGTH(STR_MTP)]))) {
+
+            if (!read_a_line( mdm, rd_mdm, LINE_LEN))
+                gTarget = TARGET_MDM;
+        }
+        else if( (!memcmp(rd_id, MSM8930_ID_1, LENGTH(MSM8930_ID_1))
+                   && IS_STR_END(rd_id[LENGTH(MSM8930_ID_1)])) ||
+                  (!memcmp(rd_id, MSM8930_ID_2, LENGTH(MSM8930_ID_2))
+                   && IS_STR_END(rd_id[LENGTH(MSM8930_ID_2)])) )
+             gTarget = TARGET_MSM_NO_SSC;
+        else
+             gTarget = TARGET_UNKNOWN;
+    }
+
+detected:
+    LOC_LOGD("HAL: %s returned %d", __FUNCTION__, gTarget);
+    return gTarget;
+}
+
+/*Reads the property ro.lean to identify if this is a lean target
+  Returns:
+  0 if not a lean and mean target
+  1 if this is a lean and mean target
+*/
+int loc_identify_lean_target()
+{
+    int ret = 0;
+    char lean_target[PROPERTY_VALUE_MAX];
+    property_get("ro.lean", lean_target, "");
+    LOC_LOGD("%s:%d]: lean target: %s\n", __func__, __LINE__, lean_target);
+    return !(strncmp(lean_target, "true", PROPERTY_VALUE_MAX));
+}
diff --git a/gps/utils/loc_target.h b/gps/utils/loc_target.h
new file mode 100644
index 0000000..3bb3b5e
--- /dev/null
+++ b/gps/utils/loc_target.h
@@ -0,0 +1,82 @@
+/* Copyright (c) 2012-2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#ifndef LOC_TARGET_H
+#define LOC_TARGET_H
+#define TARGET_SET(gnss,ssc) ( (gnss<<1)|ssc )
+#define TARGET_DEFAULT       TARGET_SET(GNSS_MSM, HAS_SSC)
+#define TARGET_MDM           TARGET_SET(GNSS_MDM, HAS_SSC)
+#define TARGET_APQ_SA        TARGET_SET(GNSS_GSS, NO_SSC)
+#define TARGET_MPQ           TARGET_SET(GNSS_NONE,NO_SSC)
+#define TARGET_MSM_NO_SSC    TARGET_SET(GNSS_MSM, NO_SSC)
+#define TARGET_QCA1530       TARGET_SET(GNSS_QCA1530, NO_SSC)
+#define TARGET_AUTO          TARGET_SET(GNSS_AUTO, NO_SSC)
+#define TARGET_UNKNOWN       TARGET_SET(GNSS_UNKNOWN, NO_SSC)
+#define getTargetGnssType(target)  (target>>1)
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+unsigned int loc_get_target(void);
+
+/*The character array passed to this function should have length
+  of atleast PROPERTY_VALUE_MAX*/
+void loc_get_target_baseband(char *baseband, int array_length);
+/*The character array passed to this function should have length
+  of atleast PROPERTY_VALUE_MAX*/
+void loc_get_platform_name(char *platform_name, int array_length);
+/*Reads the property ro.lean to identify if this is a lean target
+  Returns:
+  0 if not a lean and mean target
+  1 if this is a lean and mean target*/
+int loc_identify_lean_target();
+
+/* Please remember to update 'target_name' in loc_log.cpp,
+   if do any changes to this enum. */
+typedef enum {
+    GNSS_NONE = 0,
+    GNSS_MSM,
+    GNSS_GSS,
+    GNSS_MDM,
+    GNSS_QCA1530,
+    GNSS_AUTO,
+    GNSS_UNKNOWN
+}GNSS_TARGET;
+
+typedef enum {
+    NO_SSC = 0,
+    HAS_SSC
+}SSC_TYPE;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /*LOC_TARGET_H*/
diff --git a/gps/utils/loc_timer.c b/gps/utils/loc_timer.c
new file mode 100644
index 0000000..2beca5f
--- /dev/null
+++ b/gps/utils/loc_timer.c
@@ -0,0 +1,202 @@
+/* Copyright (c) 2013, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include<stdio.h>
+#include<stdlib.h>
+#include<sys/time.h>
+#include "loc_timer.h"
+#include<time.h>
+#include<errno.h>
+
+enum timer_state {
+    READY = 100,
+    WAITING,
+    DONE,
+    ABORT
+};
+
+typedef struct {
+    loc_timer_callback callback_func;
+    void *user_data;
+    unsigned int time_msec;
+    pthread_cond_t timer_cond;
+    pthread_mutex_t timer_mutex;
+    enum timer_state state;
+}timer_data;
+
+static void *timer_thread(void *thread_data)
+{
+    int ret = -ETIMEDOUT;
+    struct timespec ts;
+    struct timeval tv;
+    timer_data* t = (timer_data*)thread_data;
+
+    LOC_LOGD("%s:%d]: Enter. Delay = %d\n", __func__, __LINE__, t->time_msec);
+
+    gettimeofday(&tv, NULL);
+    clock_gettime(CLOCK_REALTIME, &ts);
+    if(t->time_msec >= 1000) {
+        ts.tv_sec += t->time_msec/1000;
+        t->time_msec = t->time_msec % 1000;
+    }
+    if(t->time_msec)
+        ts.tv_nsec += t->time_msec * 1000000;
+    if(ts.tv_nsec > 999999999) {
+        LOC_LOGD("%s:%d]: Large nanosecs\n", __func__, __LINE__);
+        ts.tv_sec += 1;
+        ts.tv_nsec -= 1000000000;
+    }
+    LOC_LOGD("%s:%d]: ts.tv_sec:%d; ts.tv_nsec:%d\n"
+             "\t Current time: %d sec; %d nsec",
+             __func__, __LINE__, (int)ts.tv_sec, (int)ts.tv_nsec,
+             (int)tv.tv_sec, (int)tv.tv_usec*1000);
+
+    pthread_mutex_lock(&(t->timer_mutex));
+    if (READY == t->state) {
+        t->state = WAITING;
+        ret = pthread_cond_timedwait(&t->timer_cond, &t->timer_mutex, &ts);
+        t->state = DONE;
+    }
+    pthread_mutex_unlock(&(t->timer_mutex));
+
+    switch (ret) {
+    case ETIMEDOUT:
+        LOC_LOGV("%s:%d]: loc_timer timed out",  __func__, __LINE__);
+        break;
+    case 0:
+        LOC_LOGV("%s:%d]: loc_timer stopped",  __func__, __LINE__);
+        break;
+    case -ETIMEDOUT:
+        LOC_LOGV("%s:%d]: loc_timer cancelled",  __func__, __LINE__);
+        break;
+    default:
+        LOC_LOGE("%s:%d]: Call to pthread timedwait failed; ret=%d\n",
+                 __func__, __LINE__, ret);
+        break;
+    }
+
+    if(ETIMEDOUT == ret)
+        t->callback_func(t->user_data, ret);
+
+    // A (should be rare) race condition is that, when the loc_time_stop is called
+    // and acquired mutex, we reach here.  pthread_mutex_destroy will fail with
+    // error code EBUSY.  We give it 6 tries in 5 seconds.  Should be eanough time
+    // for loc_timer_stop to complete.  With the 7th try, we also perform unlock
+    // prior to destroy.
+    {
+        int i;
+        for (i = 0; EBUSY == pthread_mutex_destroy(&t->timer_mutex) && i <= 5; i++) {
+            if (i < 5) {
+                sleep(1);
+            } else {
+                // nah, forget it, something is seriously wrong.  Mutex has been
+                // held too long.  Unlock the mutext here.
+                pthread_mutex_unlock(&t->timer_mutex);
+            }
+        }
+    }
+    pthread_cond_destroy(&t->timer_cond);
+
+    free(t);
+    LOC_LOGD("%s:%d]: Exit\n", __func__, __LINE__);
+    return NULL;
+}
+
+void* loc_timer_start(unsigned int msec, loc_timer_callback cb_func,
+                      void* caller_data)
+{
+    timer_data *t=NULL;
+    pthread_attr_t tattr;
+    pthread_t id;
+    LOC_LOGD("%s:%d]: Enter\n", __func__, __LINE__);
+    if(cb_func == NULL || msec == 0) {
+        LOC_LOGE("%s:%d]: Error: Wrong parameters\n", __func__, __LINE__);
+        goto _err;
+    }
+    t = (timer_data *)calloc(1, sizeof(timer_data));
+    if(t == NULL) {
+        LOC_LOGE("%s:%d]: Could not allocate memory. Failing.\n",
+                 __func__, __LINE__);
+        goto _err;
+    }
+
+    if(pthread_cond_init(&(t->timer_cond), NULL)) {
+        LOC_LOGE("%s:%d]: Pthread cond init failed\n", __func__, __LINE__);
+        goto t_err;
+    }
+    if(pthread_mutex_init(&(t->timer_mutex), NULL)) {
+        LOC_LOGE("%s:%d]: Pthread mutex init failed\n", __func__, __LINE__);
+        goto cond_err;
+    }
+
+    t->callback_func = cb_func;
+    t->user_data = caller_data;
+    t->time_msec = msec;
+    t->state = READY;
+
+    if (pthread_attr_init(&tattr)) {
+        LOC_LOGE("%s:%d]: Pthread mutex init failed\n", __func__, __LINE__);
+        goto mutex_err;
+    }
+    pthread_attr_setdetachstate(&tattr, PTHREAD_CREATE_DETACHED);
+
+    if(pthread_create(&(id), &tattr, timer_thread, (void *)t)) {
+        LOC_LOGE("%s:%d]: Could not create thread\n", __func__, __LINE__);
+        goto attr_err;
+    }
+
+    LOC_LOGD("%s:%d]: Created thread with id: %d\n",
+             __func__, __LINE__, (int)id);
+    goto _err;
+
+attr_err:
+    pthread_attr_destroy(&tattr);
+mutex_err:
+    pthread_mutex_destroy(&t->timer_mutex);
+cond_err:
+    pthread_cond_destroy(&t->timer_cond);
+t_err:
+    free(t);
+_err:
+    LOC_LOGD("%s:%d]: Exit\n", __func__, __LINE__);
+    return t;
+}
+
+void loc_timer_stop(void* handle) {
+    timer_data* t = (timer_data*)handle;
+
+    if (NULL != t && (READY == t->state || WAITING == t->state) &&
+        pthread_mutex_lock(&(t->timer_mutex)) == 0) {
+        if (READY == t->state || WAITING == t->state) {
+            pthread_cond_signal(&t->timer_cond);
+            t->state = ABORT;
+        }
+        pthread_mutex_unlock(&(t->timer_mutex));
+    }
+}
diff --git a/gps/utils/loc_timer.h b/gps/utils/loc_timer.h
new file mode 100644
index 0000000..0034d27
--- /dev/null
+++ b/gps/utils/loc_timer.h
@@ -0,0 +1,63 @@
+/* Copyright (c) 2013, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef __LOC_DELAY_H__
+#define __LOC_DELAY_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+#include<pthread.h>
+#include "log_util.h"
+
+/*
+  Return values:
+  Success = 0
+  Failure = Non zero
+*/
+typedef void(*loc_timer_callback)(void *user_data, int result);
+
+
+/*
+  Returns the handle, which can be used to stop the timer
+*/
+void* loc_timer_start(unsigned int delay_msec,
+                      loc_timer_callback,
+                      void* user_data);
+
+/*
+  handle becomes invalid upon the return of the callback
+*/
+void loc_timer_stop(void* handle);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif //__LOC_DELAY_H__
diff --git a/gps/utils/log_util.h b/gps/utils/log_util.h
new file mode 100644
index 0000000..8ff6b5a
--- /dev/null
+++ b/gps/utils/log_util.h
@@ -0,0 +1,181 @@
+/* Copyright (c) 2011-2014 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef __LOG_UTIL_H__
+#define __LOG_UTIL_H__
+
+#ifndef USE_GLIB
+#include <utils/Log.h>
+#endif /* USE_GLIB */
+
+#ifdef USE_GLIB
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#ifndef LOG_TAG
+#define LOG_TAG "GPS_UTILS"
+
+#endif  // LOG_TAG
+
+#endif /* USE_GLIB */
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/*=============================================================================
+ *
+ *                         LOC LOGGER TYPE DECLARATION
+ *
+ *============================================================================*/
+/* LOC LOGGER */
+typedef struct loc_logger_s
+{
+  unsigned long  DEBUG_LEVEL;
+  unsigned long  TIMESTAMP;
+} loc_logger_s_type;
+
+/*=============================================================================
+ *
+ *                               EXTERNAL DATA
+ *
+ *============================================================================*/
+extern loc_logger_s_type loc_logger;
+
+// Logging Improvements
+extern const char *loc_logger_boolStr[];
+
+extern const char *boolStr[];
+extern const char VOID_RET[];
+extern const char FROM_AFW[];
+extern const char TO_MODEM[];
+extern const char FROM_MODEM[];
+extern const char TO_AFW[];
+extern const char EXIT_TAG[];
+extern const char ENTRY_TAG[];
+/*=============================================================================
+ *
+ *                        MODULE EXPORTED FUNCTIONS
+ *
+ *============================================================================*/
+extern void loc_logger_init(unsigned long debug, unsigned long timestamp);
+extern char* get_timestamp(char* str, unsigned long buf_size);
+
+#ifndef DEBUG_DMN_LOC_API
+
+/* LOGGING MACROS */
+/*loc_logger.DEBUG_LEVEL is initialized to 0xff in loc_cfg.cpp
+  if that value remains unchanged, it means gps.conf did not
+  provide a value and we default to the initial value to use
+  Android's logging levels*/
+#define IF_LOC_LOGE if((loc_logger.DEBUG_LEVEL >= 1) && (loc_logger.DEBUG_LEVEL <= 5))
+
+#define IF_LOC_LOGW if((loc_logger.DEBUG_LEVEL >= 2) && (loc_logger.DEBUG_LEVEL <= 5))
+
+#define IF_LOC_LOGI if((loc_logger.DEBUG_LEVEL >= 3) && (loc_logger.DEBUG_LEVEL <= 5))
+
+#define IF_LOC_LOGD if((loc_logger.DEBUG_LEVEL >= 4) && (loc_logger.DEBUG_LEVEL <= 5))
+
+#define IF_LOC_LOGV if((loc_logger.DEBUG_LEVEL >= 5) && (loc_logger.DEBUG_LEVEL <= 5))
+
+#define LOC_LOGE(...) \
+IF_LOC_LOGE { ALOGE("E/" __VA_ARGS__); } \
+else if (loc_logger.DEBUG_LEVEL == 0xff) { ALOGE("E/" __VA_ARGS__); }
+
+#define LOC_LOGW(...) \
+IF_LOC_LOGW { ALOGE("W/" __VA_ARGS__); }  \
+else if (loc_logger.DEBUG_LEVEL == 0xff) { ALOGW("W/" __VA_ARGS__); }
+
+#define LOC_LOGI(...) \
+IF_LOC_LOGI { ALOGE("I/" __VA_ARGS__); }   \
+else if (loc_logger.DEBUG_LEVEL == 0xff) { ALOGI("I/" __VA_ARGS__); }
+
+#define LOC_LOGD(...) \
+IF_LOC_LOGD { ALOGE("D/" __VA_ARGS__); }   \
+else if (loc_logger.DEBUG_LEVEL == 0xff) { ALOGD("D/" __VA_ARGS__); }
+
+#define LOC_LOGV(...) \
+IF_LOC_LOGV { ALOGE("V/" __VA_ARGS__); }   \
+else if (loc_logger.DEBUG_LEVEL == 0xff) { ALOGV("V/" __VA_ARGS__); }
+
+#else /* DEBUG_DMN_LOC_API */
+
+#define LOC_LOGE(...) ALOGE("E/" __VA_ARGS__)
+
+#define LOC_LOGW(...) ALOGW("W/" __VA_ARGS__)
+
+#define LOC_LOGI(...) ALOGI("I/" __VA_ARGS__)
+
+#define LOC_LOGD(...) ALOGD("D/" __VA_ARGS__)
+
+#define LOC_LOGV(...) ALOGV("V/" __VA_ARGS__)
+
+#endif /* DEBUG_DMN_LOC_API */
+
+/*=============================================================================
+ *
+ *                          LOGGING IMPROVEMENT MACROS
+ *
+ *============================================================================*/
+#define LOG_(LOC_LOG, ID, WHAT, SPEC, VAL)                                    \
+    do {                                                                      \
+        if (loc_logger.TIMESTAMP) {                                           \
+            char ts[32];                                                      \
+            LOC_LOG("[%s] %s %s line %d " #SPEC,                              \
+                     get_timestamp(ts, sizeof(ts)), ID, WHAT, __LINE__, VAL); \
+        } else {                                                              \
+            LOC_LOG("%s %s line %d " #SPEC,                                   \
+                     ID, WHAT, __LINE__, VAL);                                \
+        }                                                                     \
+    } while(0)
+
+
+#define LOG_I(ID, WHAT, SPEC, VAL) LOG_(LOC_LOGI, ID, WHAT, SPEC, VAL)
+#define LOG_V(ID, WHAT, SPEC, VAL) LOG_(LOC_LOGV, ID, WHAT, SPEC, VAL)
+
+#define ENTRY_LOG() LOG_V(ENTRY_TAG, __func__, %s, "")
+#define EXIT_LOG(SPEC, VAL) LOG_V(EXIT_TAG, __func__, SPEC, VAL)
+
+
+// Used for logging callflow from Android Framework
+#define ENTRY_LOG_CALLFLOW() LOG_I(FROM_AFW, __func__, %s, "")
+// Used for logging callflow to Modem
+#define EXIT_LOG_CALLFLOW(SPEC, VAL) LOG_I(TO_MODEM, __func__, SPEC, VAL)
+// Used for logging callflow from Modem(TO_MODEM, __func__, %s, "")
+#define MODEM_LOG_CALLFLOW(SPEC, VAL) LOG_I(FROM_MODEM, __func__, SPEC, VAL)
+// Used for logging callflow to Android Framework
+#define CALLBACK_LOG_CALLFLOW(CB, SPEC, VAL) LOG_I(TO_AFW, CB, SPEC, VAL)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // __LOG_UTIL_H__
diff --git a/gps/utils/msg_q.c b/gps/utils/msg_q.c
new file mode 100644
index 0000000..f82d4c0
--- /dev/null
+++ b/gps/utils/msg_q.c
@@ -0,0 +1,336 @@
+/* Copyright (c) 2011-2012, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "msg_q.h"
+
+#define LOG_TAG "LocSvc_utils_q"
+#include "log_util.h"
+#include "platform_lib_includes.h"
+#include "linked_list.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <pthread.h>
+
+typedef struct msg_q {
+   void* msg_list;                  /* Linked list to store information */
+   pthread_cond_t  list_cond;       /* Condition variable for waiting on msg queue */
+   pthread_mutex_t list_mutex;      /* Mutex for exclusive access to message queue */
+   int unblocked;                   /* Has this message queue been unblocked? */
+} msg_q;
+
+/*===========================================================================
+FUNCTION    convert_linked_list_err_type
+
+DESCRIPTION
+   Converts from one set of enum values to another.
+
+   linked_list_val: Value to convert to msg_q_enum_type
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   Corresponding linked_list_enum_type in msg_q_enum_type
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+static msq_q_err_type convert_linked_list_err_type(linked_list_err_type linked_list_val)
+{
+   switch( linked_list_val )
+   {
+   case eLINKED_LIST_SUCCESS:
+      return eMSG_Q_SUCCESS;
+   case eLINKED_LIST_INVALID_PARAMETER:
+      return eMSG_Q_INVALID_PARAMETER;
+   case eLINKED_LIST_INVALID_HANDLE:
+      return eMSG_Q_INVALID_HANDLE;
+   case eLINKED_LIST_UNAVAILABLE_RESOURCE:
+      return eMSG_Q_UNAVAILABLE_RESOURCE;
+   case eLINKED_LIST_INSUFFICIENT_BUFFER:
+      return eMSG_Q_INSUFFICIENT_BUFFER;
+
+   case eLINKED_LIST_FAILURE_GENERAL:
+   default:
+      return eMSG_Q_FAILURE_GENERAL;
+   }
+}
+
+/* ----------------------- END INTERNAL FUNCTIONS ---------------------------------------- */
+
+/*===========================================================================
+
+  FUNCTION:   msg_q_init
+
+  ===========================================================================*/
+msq_q_err_type msg_q_init(void** msg_q_data)
+{
+   if( msg_q_data == NULL )
+   {
+      LOC_LOGE("%s: Invalid msg_q_data parameter!\n", __FUNCTION__);
+      return eMSG_Q_INVALID_PARAMETER;
+   }
+
+   msg_q* tmp_msg_q;
+   tmp_msg_q = (msg_q*)calloc(1, sizeof(msg_q));
+   if( tmp_msg_q == NULL )
+   {
+      LOC_LOGE("%s: Unable to allocate space for message queue!\n", __FUNCTION__);
+      return eMSG_Q_FAILURE_GENERAL;
+   }
+
+   if( linked_list_init(&tmp_msg_q->msg_list) != 0 )
+   {
+      LOC_LOGE("%s: Unable to initialize storage list!\n", __FUNCTION__);
+      free(tmp_msg_q);
+      return eMSG_Q_FAILURE_GENERAL;
+   }
+
+   if( pthread_mutex_init(&tmp_msg_q->list_mutex, NULL) != 0 )
+   {
+      LOC_LOGE("%s: Unable to initialize list mutex!\n", __FUNCTION__);
+      linked_list_destroy(&tmp_msg_q->msg_list);
+      free(tmp_msg_q);
+      return eMSG_Q_FAILURE_GENERAL;
+   }
+
+   if( pthread_cond_init(&tmp_msg_q->list_cond, NULL) != 0 )
+   {
+      LOC_LOGE("%s: Unable to initialize msg q cond var!\n", __FUNCTION__);
+      linked_list_destroy(&tmp_msg_q->msg_list);
+      pthread_mutex_destroy(&tmp_msg_q->list_mutex);
+      free(tmp_msg_q);
+      return eMSG_Q_FAILURE_GENERAL;
+   }
+
+   tmp_msg_q->unblocked = 0;
+
+   *msg_q_data = tmp_msg_q;
+
+   return eMSG_Q_SUCCESS;
+}
+
+/*===========================================================================
+
+  FUNCTION:   msg_q_init2
+
+  ===========================================================================*/
+const void* msg_q_init2()
+{
+  void* q = NULL;
+  if (eMSG_Q_SUCCESS != msg_q_init(&q)) {
+    q = NULL;
+  }
+  return q;
+}
+
+/*===========================================================================
+
+  FUNCTION:   msg_q_destroy
+
+  ===========================================================================*/
+msq_q_err_type msg_q_destroy(void** msg_q_data)
+{
+   if( msg_q_data == NULL )
+   {
+      LOC_LOGE("%s: Invalid msg_q_data parameter!\n", __FUNCTION__);
+      return eMSG_Q_INVALID_HANDLE;
+   }
+
+   msg_q* p_msg_q = (msg_q*)*msg_q_data;
+
+   linked_list_destroy(&p_msg_q->msg_list);
+   pthread_mutex_destroy(&p_msg_q->list_mutex);
+   pthread_cond_destroy(&p_msg_q->list_cond);
+
+   p_msg_q->unblocked = 0;
+
+   free(*msg_q_data);
+   *msg_q_data = NULL;
+
+   return eMSG_Q_SUCCESS;
+}
+
+/*===========================================================================
+
+  FUNCTION:   msg_q_snd
+
+  ===========================================================================*/
+msq_q_err_type msg_q_snd(void* msg_q_data, void* msg_obj, void (*dealloc)(void*))
+{
+   msq_q_err_type rv;
+   if( msg_q_data == NULL )
+   {
+      LOC_LOGE("%s: Invalid msg_q_data parameter!\n", __FUNCTION__);
+      return eMSG_Q_INVALID_HANDLE;
+   }
+   if( msg_obj == NULL )
+   {
+      LOC_LOGE("%s: Invalid msg_obj parameter!\n", __FUNCTION__);
+      return eMSG_Q_INVALID_PARAMETER;
+   }
+
+   msg_q* p_msg_q = (msg_q*)msg_q_data;
+
+   pthread_mutex_lock(&p_msg_q->list_mutex);
+   LOC_LOGD("%s: Sending message with handle = 0x%08X\n", __FUNCTION__, msg_obj);
+
+   if( p_msg_q->unblocked )
+   {
+      LOC_LOGE("%s: Message queue has been unblocked.\n", __FUNCTION__);
+      pthread_mutex_unlock(&p_msg_q->list_mutex);
+      return eMSG_Q_UNAVAILABLE_RESOURCE;
+   }
+
+   rv = convert_linked_list_err_type(linked_list_add(p_msg_q->msg_list, msg_obj, dealloc));
+
+   /* Show data is in the message queue. */
+   pthread_cond_signal(&p_msg_q->list_cond);
+
+   pthread_mutex_unlock(&p_msg_q->list_mutex);
+
+   LOC_LOGD("%s: Finished Sending message with handle = 0x%08X\n", __FUNCTION__, msg_obj);
+
+   return rv;
+}
+
+/*===========================================================================
+
+  FUNCTION:   msg_q_rcv
+
+  ===========================================================================*/
+msq_q_err_type msg_q_rcv(void* msg_q_data, void** msg_obj)
+{
+   msq_q_err_type rv;
+   if( msg_q_data == NULL )
+   {
+      LOC_LOGE("%s: Invalid msg_q_data parameter!\n", __FUNCTION__);
+      return eMSG_Q_INVALID_HANDLE;
+   }
+
+   if( msg_obj == NULL )
+   {
+      LOC_LOGE("%s: Invalid msg_obj parameter!\n", __FUNCTION__);
+      return eMSG_Q_INVALID_PARAMETER;
+   }
+
+   msg_q* p_msg_q = (msg_q*)msg_q_data;
+
+   LOC_LOGD("%s: Waiting on message\n", __FUNCTION__);
+
+   pthread_mutex_lock(&p_msg_q->list_mutex);
+
+   if( p_msg_q->unblocked )
+   {
+      LOC_LOGE("%s: Message queue has been unblocked.\n", __FUNCTION__);
+      pthread_mutex_unlock(&p_msg_q->list_mutex);
+      return eMSG_Q_UNAVAILABLE_RESOURCE;
+   }
+
+   /* Wait for data in the message queue */
+   while( linked_list_empty(p_msg_q->msg_list) && !p_msg_q->unblocked )
+   {
+      pthread_cond_wait(&p_msg_q->list_cond, &p_msg_q->list_mutex);
+   }
+
+   rv = convert_linked_list_err_type(linked_list_remove(p_msg_q->msg_list, msg_obj));
+
+   pthread_mutex_unlock(&p_msg_q->list_mutex);
+
+   LOC_LOGD("%s: Received message 0x%08X rv = %d\n", __FUNCTION__, *msg_obj, rv);
+
+   return rv;
+}
+
+/*===========================================================================
+
+  FUNCTION:   msg_q_flush
+
+  ===========================================================================*/
+msq_q_err_type msg_q_flush(void* msg_q_data)
+{
+   msq_q_err_type rv;
+   if ( msg_q_data == NULL )
+   {
+      LOC_LOGE("%s: Invalid msg_q_data parameter!\n", __FUNCTION__);
+      return eMSG_Q_INVALID_HANDLE;
+   }
+
+   msg_q* p_msg_q = (msg_q*)msg_q_data;
+
+   LOC_LOGD("%s: Flushing Message Queue\n", __FUNCTION__);
+
+   pthread_mutex_lock(&p_msg_q->list_mutex);
+
+   /* Remove all elements from the list */
+   rv = convert_linked_list_err_type(linked_list_flush(p_msg_q->msg_list));
+
+   pthread_mutex_unlock(&p_msg_q->list_mutex);
+
+   LOC_LOGD("%s: Message Queue flushed\n", __FUNCTION__);
+
+   return rv;
+}
+
+/*===========================================================================
+
+  FUNCTION:   msg_q_unblock
+
+  ===========================================================================*/
+msq_q_err_type msg_q_unblock(void* msg_q_data)
+{
+   if ( msg_q_data == NULL )
+   {
+      LOC_LOGE("%s: Invalid msg_q_data parameter!\n", __FUNCTION__);
+      return eMSG_Q_INVALID_HANDLE;
+   }
+
+   msg_q* p_msg_q = (msg_q*)msg_q_data;
+   pthread_mutex_lock(&p_msg_q->list_mutex);
+
+   if( p_msg_q->unblocked )
+   {
+      LOC_LOGE("%s: Message queue has been unblocked.\n", __FUNCTION__);
+      pthread_mutex_unlock(&p_msg_q->list_mutex);
+      return eMSG_Q_UNAVAILABLE_RESOURCE;
+   }
+
+   LOC_LOGD("%s: Unblocking Message Queue\n", __FUNCTION__);
+   /* Unblocking message queue */
+   p_msg_q->unblocked = 1;
+
+   /* Allow all the waiters to wake up */
+   pthread_cond_broadcast(&p_msg_q->list_cond);
+
+   pthread_mutex_unlock(&p_msg_q->list_mutex);
+
+   LOC_LOGD("%s: Message Queue unblocked\n", __FUNCTION__);
+
+   return eMSG_Q_SUCCESS;
+}
diff --git a/gps/utils/msg_q.h b/gps/utils/msg_q.h
new file mode 100644
index 0000000..453b8ce
--- /dev/null
+++ b/gps/utils/msg_q.h
@@ -0,0 +1,207 @@
+/* Copyright (c) 2011, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __MSG_Q_H__
+#define __MSG_Q_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+#include <stdlib.h>
+
+/** Linked List Return Codes */
+typedef enum
+{
+  eMSG_Q_SUCCESS                             = 0,
+     /**< Request was successful. */
+  eMSG_Q_FAILURE_GENERAL                     = -1,
+     /**< Failed because of a general failure. */
+  eMSG_Q_INVALID_PARAMETER                   = -2,
+     /**< Failed because the request contained invalid parameters. */
+  eMSG_Q_INVALID_HANDLE                      = -3,
+     /**< Failed because an invalid handle was specified. */
+  eMSG_Q_UNAVAILABLE_RESOURCE                = -4,
+     /**< Failed because an there were not enough resources. */
+  eMSG_Q_INSUFFICIENT_BUFFER                 = -5,
+     /**< Failed because an the supplied buffer was too small. */
+}msq_q_err_type;
+
+/*===========================================================================
+FUNCTION    msg_q_init
+
+DESCRIPTION
+   Initializes internal structures for message queue.
+
+   msg_q_data: pointer to an opaque Q handle to be returned; NULL if fails
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   Look at error codes above.
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+msq_q_err_type msg_q_init(void** msg_q_data);
+
+/*===========================================================================
+FUNCTION    msg_q_init2
+
+DESCRIPTION
+   Initializes internal structures for message queue.
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   opaque handle to the Q created; NULL if create fails
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+const void* msg_q_init2();
+
+/*===========================================================================
+FUNCTION    msg_q_destroy
+
+DESCRIPTION
+   Releases internal structures for message queue.
+
+   msg_q_data: State of message queue to be released.
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   Look at error codes above.
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+msq_q_err_type msg_q_destroy(void** msg_q_data);
+
+/*===========================================================================
+FUNCTION    msg_q_snd
+
+DESCRIPTION
+   Sends data to the message queue. The passed in data pointer
+   is not modified or freed. Passed in msg_obj is expected to live throughout
+   the use of the msg_q (i.e. data is not allocated internally)
+
+   msg_q_data: Message Queue to add the element to.
+   msgp:       Pointer to data to add into message queue.
+   dealloc:    Function used to deallocate memory for this element. Pass NULL
+               if you do not want data deallocated during a flush operation
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   Look at error codes above.
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+msq_q_err_type msg_q_snd(void* msg_q_data, void* msg_obj, void (*dealloc)(void*));
+
+/*===========================================================================
+FUNCTION    msg_q_rcv
+
+DESCRIPTION
+   Retrieves data from the message queue. msg_obj is the oldest message received
+   and pointer is simply removed from message queue.
+
+   msg_q_data: Message Queue to copy data from into msgp.
+   msg_obj:    Pointer to space to copy msg_q contents to.
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   Look at error codes above.
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+msq_q_err_type msg_q_rcv(void* msg_q_data, void** msg_obj);
+
+/*===========================================================================
+FUNCTION    msg_q_flush
+
+DESCRIPTION
+   Function removes all elements from the message queue.
+
+   msg_q_data: Message Queue to remove elements from.
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   Look at error codes above.
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+msq_q_err_type msg_q_flush(void* msg_q_data);
+
+/*===========================================================================
+FUNCTION    msg_q_unblock
+
+DESCRIPTION
+   This function will stop use of the message queue. All waiters will wake up
+   and likely receive nothing from the queue resulting in a negative return
+   value. The message queue can no longer be used until it is destroyed
+   and initialized again after calling this function.
+
+   msg_q_data: Message queue to unblock.
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   Look at error codes above.
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+msq_q_err_type msg_q_unblock(void* msg_q_data);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __MSG_Q_H__ */