Glib多线程编程

// 线程初始化

void g_thread_init(GThreadFunctions *vtable);

gboolean g_thread_supported();  //检测线程是否被初始化，在程序开始处执行

// joinable设置为TRUE，则可以通过调用g_thread_join来等来线程结束

GThread* g_thread_create(GTreadFunc func, gpinter data,gboolean joinable, GError **error);

GThread* g_thread_self();

void g_thread_exit(gpointer retval);

// 等待线程return或g_thread_exit退出，其返回值是上面exit的参数，或return的返回值

gpointer g_thread_join(GThread* thread);

//加锁机制

GMutex* g_mutex_new();

void g_mutex_lock(GMutex* mutex);

// 尝试加锁，如果mutex已经被加锁，则立即返回FALSE；否则对mutex加锁，并返回TRUE

gboolean g_mutex_trylock(GMutex* mutex);

void g_mutex_unlock(GMutex* mutex);

void g_mutex_free(GMutex* mutex);

#include <glib.h>

static GMutex* mutex = NULL;

void thread_call(gpointer data)

{

gint i = GPOINTER_TO_INT(data);

g_print("%d\n", i);

g_print("Thread %d was created\n", i);

}

int main()

{

gint i;

GThread* thread = NULL;

GError*  error = NULL;

GMutex*  mutex = NULL;

if (!g_thread_supported())

{

g_thread_init(NULL);

}

mutex = g_mutex_new();

g_mutex_lock(mutex);

for (i = 1; i < 10; i++)

{

thread = g_thread_create((GThreadFunc)thread_call,(gpointer)i, FALSE, &error);

// 留有线程执行时间,便于观察

g_usleep(50);

// thread = g_thread_create((GThreadFunc)thread_call,GINT_TO_POINTER(i), FALSE, NULL);

if (thread == NULL)

{

g_critical("Create thread error: %s\n",error->message);

g_error_free(error);

}

}

g_mutex_unlock(mutex);

g_mutex_free(mutex);

return 0;

}