idle: migrate from pthread to glib threads

src/idle.c

@@ -25,10 +25,10 @@
 #include "main_notify.h"
 
 #include <assert.h>
-#include <pthread.h>
+#include <glib.h>
 
 static unsigned idle_flags;
-static pthread_mutex_t idle_mutex = PTHREAD_MUTEX_INITIALIZER;
+static GMutex *idle_mutex = NULL;
 
 static const char *const idle_names[] = {
 	"database",
@@ -42,14 +42,29 @@ static const char *const idle_names[] = {
         NULL
 };
 
+void
+idle_init(void)
+{
+	g_assert(idle_mutex == NULL);
+	idle_mutex = g_mutex_new();
+}
+
+void
+idle_deinit(void)
+{
+	g_assert(idle_mutex != NULL);
+	g_mutex_free(idle_mutex);
+	idle_mutex = NULL;
+}
+
 void
 idle_add(unsigned flags)
 {
 	assert(flags != 0);
 
-	pthread_mutex_lock(&idle_mutex);
+	g_mutex_lock(idle_mutex);
 	idle_flags |= flags;
-	pthread_mutex_unlock(&idle_mutex);
+	g_mutex_unlock(idle_mutex);
 
 	wakeup_main_task();
 }
@@ -59,10 +74,10 @@ idle_get(void)
 {
 	unsigned flags;
 
-	pthread_mutex_lock(&idle_mutex);
+	g_mutex_lock(idle_mutex);
 	flags = idle_flags;
 	idle_flags = 0;
-	pthread_mutex_unlock(&idle_mutex);
+	g_mutex_unlock(idle_mutex);
 
 	return flags;
 }

src/idle.h

@@ -48,6 +48,18 @@ enum {
 	IDLE_OPTIONS = 0x40,
 };
 
+/**
+ * Initialize the mutex
+ */
+void
+idle_init(void);
+
+/**
+ * Destroy the mutex
+ */
+void
+idle_deinit(void);
+
 /**
  * Adds idle flag (with bitwise "or") and queues notifications to all
  * clients.

src/main.c

@@ -268,6 +268,7 @@ int main(int argc, char *argv[])
 	/* enable GLib's thread safety code */
 	g_thread_init(NULL);
 
+	idle_init();
 	initConf();
 
 	parseOptions(argc, argv, &options);
@@ -382,6 +383,7 @@ int main(int argc, char *argv[])
 	music_pipe_free();
 	cleanUpPidFile();
 	finishConf();
+	idle_deinit();
 
 	close_log_files();
 	return EXIT_SUCCESS;