Added msm8916 GPS code.
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));
+ }
+}