A test app showing that at least on R1/alpha1 there is a deadlock when quitting an BApplication started from another thread.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33665 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-19 20:37:45 +00:00
parent 449b4c4192
commit e19e3efd0d
1 changed files with 82 additions and 0 deletions
@@ -0,0 +1,82 @@
+#include <stdio.h>
+#include <signal.h>
+#include <Application.h>
+
+static thread_id gBAppThreadID;
+static thread_id gMainThreadID;
+static int bapp_ref_count = 0;
+
+static int32
+bapp_quit_thread(void *arg)
+{
+	printf("%s: calling Lock()\n", __FUNCTION__);
+	be_app->Lock();
+	printf("%s: calling Quit()\n", __FUNCTION__);
+	be_app->Quit();
+	return 0;
+}
+
+
+static void
+sighandler(int sig)
+{
+	resume_thread(spawn_thread(bapp_quit_thread, "BApplication->Quit()", B_NORMAL_PRIORITY, NULL));
+}
+
+
+static int32
+bapp_thread(void *arg)
+{
+	signal(SIGINT, sighandler); /* on ^C exit the bapp_thread too */
+	printf("%s: calling Lock()\n", __FUNCTION__);
+	be_app->Lock();
+	printf("%s: calling Run()\n", __FUNCTION__);
+	be_app->Run();
+	printf("%s: exitting...\n", __FUNCTION__);
+	return 0;
+}
+
+
+void
+beos_launch_bapplication(void)
+{
+	bapp_ref_count++;
+	if (be_app)
+		return; /* done already! */
+	new BApplication("application/x-vnd.mmu_man-threaded-BApp-test");
+	gBAppThreadID = spawn_thread(bapp_thread, "BApplication(test)", B_NORMAL_PRIORITY, (void *)find_thread(NULL));
+	if (gBAppThreadID < B_OK)
+		return; /* #### handle errors */
+	if (resume_thread(gBAppThreadID) < B_OK)
+		return;
+	// This way we ensure we don't create BWindows before be_app is created
+	// (creating it in the thread doesn't ensure this)
+	printf("%s: calling Unlock()\n", __FUNCTION__);
+	be_app->Unlock();
+}
+
+
+void beos_uninit_bapplication(void)
+{
+	status_t err;
+	if (--bapp_ref_count)
+		return;
+	if (!be_app->Lock())
+		debugger("cannot lock BApp!");
+	printf("%s: calling Quit()\n", __FUNCTION__);
+	be_app->Quit();
+	printf("%s: waiting for app thread\n", __FUNCTION__);
+	wait_for_thread(gBAppThreadID, &err);
+	delete be_app;
+	be_app = NULL;
+}
+
+
+int main()
+{
+	printf("%s: calling beos_launch_bapplication()\n", __FUNCTION__);
+	beos_launch_bapplication();
+	sleep(10);
+	printf("%s: calling beos_uninit_bapplication()\n", __FUNCTION__);
+	beos_uninit_bapplication();
+}