+static Eina_Bool shot_mutex_init;
+static pthread_mutex_t shot_lock;
+
+static Eina_Bool
+_screenshot_mutex_init(void)
+{
+ if (shot_mutex_init)
+ return EINA_TRUE;
+
+ if (pthread_mutex_init(&shot_lock, NULL))
+ {
+ fprintf(stderr, "[screenshot] fail: mutex init"); /*LCOV_EXCL_LINE*/
+ return EINA_FALSE; /*LCOV_EXCL_LINE*/
+ }
+
+ shot_mutex_init = EINA_TRUE;
+
+ return EINA_TRUE;
+}
+
+static Eina_Bool
+_screenshot_mutex_destory(void)
+{
+ if (!shot_mutex_init)
+ return EINA_TRUE;
+
+ if (pthread_mutex_destroy(&shot_lock))
+ {
+ fprintf(stderr, "[screenshot] fail: mutex destory"); /*LCOV_EXCL_LINE*/
+ return EINA_FALSE; /*LCOV_EXCL_LINE*/
+ }
+
+ shot_mutex_init = EINA_FALSE;
+
+ return EINA_TRUE;
+}
+
+void
+_screenshot_mutex_lock(void)
+{
+ if (!_screenshot_mutex_init())
+ return;
+
+ pthread_mutex_lock(&shot_lock);
+}
+
+void
+_screenshot_mutex_unlock(void)
+{
+ pthread_mutex_unlock(&shot_lock);
+}