GLib简介.pptx

Glib 简介 东软GTK培训材料之二 常用宏 常用宏 G_OS_WIN32 G_OS_UNIX G_DIR_SEPARATOR G_DIR_SEPARATOR_S TRUE FALSE MIN MAX ABS CLAMP G_N_ELEMENTS g_return_if_fail/g_return_val_if_fail 常用类型转换宏 GINT_TO_POINTER GPOINTER_TO_INT 主消息循环(The Main Event Loop) g_main_loop_new g_main_run g_main_quit - g_main_new, g_main_quit -gtk_main(), gtk_main_quit() g_timeout_add/g_timeout_add_seconds g_source_remove Thread 线程初始化 g_thread_init() g_thread_supported() g_thread_init()在一个程序中只能调用一次，如果调用多次将返回错误，所以建议用以下方式调用：if (!g_thread_supported ()) {g_thread_init (NULL);} 线程创建 GThread * g_thread_create (GThreadFunc func, gpointer data, gboolean joinable, GError **error); 说明关于joinable参数的意义。 线程函数 gpointer (*GThreadFunc) (gpointer data); 其它函数 g_thread_join 如果Create中joinable=TRUE, 此函数将阻塞在此，直到线程函数返回 g_thread_exit 从线程直接返回，建议使用return，而不用这个函数 线程的同步 互斥体(GMutex/GStaticMutex) - Mutex g_mutex_new () g_mutex_lock () g_mutex_unlock() g_mutex_trylock() g_mutex_free() 条件量(Gcond) - Event g_cond_new() g_cond_signal() g_cond_wait() g_cond_timed_wait() g_cond_free() 一个简单的示例 #include glib.h class TestThread{ public: TestThread(); ~TestThread(); void Start(); GMainLoop* GetMainLoop() const; private: static gpointer SetThread(gpointer user_data); static gpointer GetThread(gpointer user_data); static gpointer CheckThread(gpointer user_data); void ProduceThread(gint iValue); void ConsumeThread(); void CheckFinish(); GMutex* m_pMutex; GCond* m_pCond; GMainLoop* m_pMainLoop; gint m_iStorage; gboolean m_bSetThreadEnd; gboolean m_bGetThreadEnd; }; //public TestThread::TestThread() { m_pMutex = g_mutex_new(); m_pCond = g_cond_new(); m_pMainLoop = g_main_loop_new(NULL, FALSE); m_iStorage = -1; m_bSetThreadEnd = FALSE; m_bGetThreadEnd = FALSE; } TestThread::~TestThread() { if (NULL != m_pMutex) { g_mutex_free(m_pMutex); m_pMutex = NULL; } if (NULL != m_pCond) { g_cond_free(m_pCond); m_pCond = NULL; } } void TestThread::Start() { g_th