set mutex on gmt handle

Change-Id: I016ab62595f8051b7b928d49c762e1d6ea5db692

diff --git a/common/cal_time.cpp b/common/cal_time.cpp
index a475916..80e7a97 100644 (file)
--- a/common/cal_time.cpp
+++ b/common/cal_time.cpp
@@ -33,6 +33,7 @@
 #include <unicode/udat.h>
 #include <unicode/rbtz.h>
 #include <unicode/uclean.h>
+#include <pthread.h>
 
 #include "calendar.h"
 #include "cal_internal.h"
@@ -46,6 +47,7 @@
 #define ms2sec(ms) (long long int)(ms / 1000.0)
 #define sec2ms(s) (s * 1000.0)
 
+static pthread_mutex_t cal_mutex_gmt = PTHREAD_MUTEX_INITIALIZER;
 static UCalendar *_g_ucal_gmt = NULL;
 
 void cal_time_get_registered_tzid_with_offset(int offset, char *registered_tzid, int tzid_size)
@@ -269,27 +271,33 @@ int cal_time_init(void)
 {
        UCalendar *ucal = NULL;
 
+       pthread_mutex_lock(&cal_mutex_gmt);
        if (NULL == _g_ucal_gmt) {
                ucal = cal_time_open_ucal(-1, NULL, -1);
                RETVM_IF(NULL == ucal, CALENDAR_ERROR_SYSTEM, "cal_time_open_ucal() Fail");
                _g_ucal_gmt = ucal;
        }
+       pthread_mutex_unlock(&cal_mutex_gmt);
        return CALENDAR_ERROR_NONE;
 }
 
 void cal_time_fini(void)
 {
+       pthread_mutex_lock(&cal_mutex_gmt);
        if (_g_ucal_gmt) {
                ucal_close(_g_ucal_gmt);
                _g_ucal_gmt = NULL;
        }
+       pthread_mutex_unlock(&cal_mutex_gmt);
 }
 
 static UCalendar* __get_gmt_ucal(void)
 {
+       pthread_mutex_lock(&cal_mutex_gmt);
        if (NULL == _g_ucal_gmt) {
                cal_time_init();
        }
+       pthread_mutex_unlock(&cal_mutex_gmt);
        return _g_ucal_gmt;
 }