Question

我搜索了堆栈溢出以找到与我的问题相关的答案。但我没有找到任何答案。

我有一个主线程（我的main（）函数），它启动一个线程。新线程运行GMainLoop。在我的主要功能中，我通过在某些文件描述符上调用g_io_watch来不断添加源代码。但是如果调度了事件，我会得到垃圾数据。

以下是我正在尝试的代码的一小部分：

GMainLoop *loop;

gpointer event_loop_thread(gpointer arg)
{   
    g_main_loop_run(loop);
    g_main_loop_unref(loop);
    return NULL;
}

int init()
{
    loop = g_main_loop_new(NULL, FALSE);
    g_thread_new(NULL, event_loop_thread, NULL);
    return 0;
}

gboolean __hci_service(GIOChannel *source, GIOCondition condition, gpointer data)
{
    // Doing something
    return FALSE;
}

int main()
{
    init();
    int _adapter_id = hci_devid("hci0");
    int hci_dev = hci_open_dev(_adapter_id);
    GIOChannel *p_hci_io = g_io_channel_unix_new(dev_id);

    GIOCondition cond = (GIOCondition)(G_IO_IN);
    g_io_add_watch(p_hci_io, cond, __hci_service, NULL);

    while (true);
    // I will close file descriptor
    return 0;

}

但是，如果我尝试使用此代码，那么一切都按预期工作：

GMainLoop *loop;

gpointer event_loop_thread(gpointer arg)
{   
    g_main_loop_run(loop);
    g_main_loop_unref(loop);
    return NULL;
}

int init()
{
    loop = g_main_loop_new(NULL, FALSE);
    g_thread_new(NULL, event_loop_thread, NULL);
    return 0;
}

gboolean __hci_service(GIOChannel *source, GIOCondition condition, gpointer data)
{
    // Doing something
    return FALSE;
}

int main()
{
    // init();
    int _adapter_id = hci_devid("hci0");
    int hci_dev = hci_open_dev(_adapter_id);
    GIOChannel *p_hci_io = g_io_channel_unix_new(dev_id);

    GIOCondition cond = (GIOCondition)(G_IO_IN);
    g_io_add_watch(p_hci_io, cond, __hci_service, NULL);

    loop = g_main_loop_new(NULL, FALSE);
    g_main_loop_run(loop);
    g_main_loop_unref(loop);

    while (true);
    // I will close file descriptor
    return 0;

}

编辑：

我尝试将主线程的默认GMainContext传递给新创建的线程。看一看。告诉我我的方法是否正确。

GMainLoop *loop;

gpointer event_loop_thread(gpointer arg)
{   
    GMainContext *context = (GMainContext *)arg;
    loop = g_main_loop_new(context, FALSE);
    g_main_context_push_thread_default(context);
    g_main_loop_run(loop);
    g_main_loop_unref(loop);
    return NULL;
}

int init()
{

    g_thread_new(NULL, event_loop_thread, (gpointer)g_main_context_default());
    return 0;
}

gboolean __hci_service(GIOChannel *source, GIOCondition condition, gpointer data)
{
    // Doing something
    return FALSE;
}

int main()
{
    init();
    int _adapter_id = hci_devid("hci0");
    int hci_dev = hci_open_dev(_adapter_id);
    GIOChannel *p_hci_io = g_io_channel_unix_new(dev_id);

    GIOCondition cond = (GIOCondition)(G_IO_IN);
    g_io_add_watch(p_hci_io, cond, __hci_service, NULL);

    //loop = g_main_loop_new(NULL, FALSE);
    //g_main_loop_run(loop);
    //g_main_loop_unref(loop);

    while (true);
    // I will close file descriptor
    return 0;

}

一个线程中的GLib GMainContext？

0 个答案: