Fixed bug 2027 - Full-screen appears to be broken - hang in SDL_DestroyWindow()

Rainer Deyke

I'm running Linux Mint 15 with the Cinnamon window manager.  SDL_DestroyWindow consistently locks up for me when the window if fullscreen.

test/testthread.c

@@ -0,0 +1,96 @@
+/*
+  Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely.
+*/
+
+/* Simple test of the SDL threading code */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <signal.h>
+
+#include "SDL.h"
+#include "SDL_thread.h"
+
+static SDL_TLSID tls;
+static int alive = 0;
+
+/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
+static void
+quit(int rc)
+{
+    SDL_Quit();
+    exit(rc);
+}
+
+int SDLCALL
+ThreadFunc(void *data)
+{
+    SDL_TLSSet(tls, "baby thread", NULL);
+    printf("Started thread %s: My thread id is %lu, thread data = %s\n",
+           (char *) data, SDL_ThreadID(), (const char *)SDL_TLSGet(tls));
+    while (alive) {
+        printf("Thread '%s' is alive!\n", (char *) data);
+        SDL_Delay(1 * 1000);
+    }
+    printf("Thread '%s' exiting!\n", (char *) data);
+    return (0);
+}
+
+static void
+killed(int sig)
+{
+    printf("Killed with SIGTERM, waiting 5 seconds to exit\n");
+    SDL_Delay(5 * 1000);
+    alive = 0;
+    quit(0);
+}
+
+int
+main(int argc, char *argv[])
+{
+    SDL_Thread *thread;
+
+    /* Load the SDL library */
+    if (SDL_Init(0) < 0) {
+        fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
+        return (1);
+    }
+
+    tls = SDL_TLSCreate();
+    SDL_assert(tls);
+    SDL_TLSSet(tls, "main thread", NULL);
+    printf("Main thread data initially: %s\n", (const char *)SDL_TLSGet(tls));
+
+    alive = 1;
+    thread = SDL_CreateThread(ThreadFunc, "One", "#1");
+    if (thread == NULL) {
+        fprintf(stderr, "Couldn't create thread: %s\n", SDL_GetError());
+        quit(1);
+    }
+    SDL_Delay(5 * 1000);
+    printf("Waiting for thread #1\n");
+    alive = 0;
+    SDL_WaitThread(thread, NULL);
+
+    printf("Main thread data finally: %s\n", (const char *)SDL_TLSGet(tls));
+
+    alive = 1;
+    signal(SIGTERM, killed);
+    thread = SDL_CreateThread(ThreadFunc, "Two", "#2");
+    if (thread == NULL) {
+        fprintf(stderr, "Couldn't create thread: %s\n", SDL_GetError());
+        quit(1);
+    }
+    raise(SIGTERM);
+
+    SDL_Quit();                 /* Never reached */
+    return (0);                 /* Never reached */
+}