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avoid crash at exit

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This commit is contained in:
David Rose 2009-12-30 00:03:31 +00:00
parent 60b1c07c40
commit 478909b764
1 changed files with 13 additions and 3 deletions
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16
panda/src/display/graphicsEngine.cxx
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@ -461,6 +461,7 @@ make_output(GraphicsPipe *pipe,
////////////////////////////////////////////////////////////////////
bool GraphicsEngine::
remove_window(GraphicsOutput *window) {
nassertr(window != NULL, false);
Thread *current_thread = Thread::get_current_thread();
// First, make sure we know what this window is.
@ -525,17 +526,23 @@ void GraphicsEngine::
remove_all_windows() {
Thread *current_thread = Thread::get_current_thread();
// Let's move the _windows vector into a local copy first, and walk
// through that local copy, just in case someone we call during the
// loop attempts to modify _windows. I don't know what code would
// be doing this, but it appeared to be happening, and this worked
// around it.
Windows old_windows;
old_windows.swap(_windows);
Windows::iterator wi;
for (wi = _windows.begin(); wi != _windows.end(); ++wi) {
for (wi = old_windows.begin(); wi != old_windows.end(); ++wi) {
GraphicsOutput *win = (*wi);
nassertv(win != NULL);
do_remove_window(win, current_thread);
GraphicsStateGuardian *gsg = win->get_gsg();
if (gsg != (GraphicsStateGuardian *)NULL) {
gsg->release_all();
}
}
_windows.clear();
_app.do_close(this, current_thread);
_app.do_pending(this, current_thread);
@ -676,6 +683,7 @@ render_frame() {
Windows::iterator wi;
for (wi = _windows.begin(); wi != _windows.end(); ++wi) {
GraphicsOutput *win = (*wi);
nassertv(win != NULL);
if (win->get_delete_flag()) {
do_remove_window(win, current_thread);
@ -1825,6 +1833,7 @@ do_draw(CullResult *cull_result, SceneSetup *scene_setup,
void GraphicsEngine::
do_add_window(GraphicsOutput *window,
const GraphicsThreadingModel &threading_model) {
nassertv(window != NULL);
LightReMutexHolder holder(_lock);
nassertv(window->get_engine() == this);
@ -1918,6 +1927,7 @@ do_add_gsg(GraphicsStateGuardian *gsg, GraphicsPipe *pipe,
////////////////////////////////////////////////////////////////////
void GraphicsEngine::
do_remove_window(GraphicsOutput *window, Thread *current_thread) {
nassertv(window != NULL);
PT(GraphicsPipe) pipe = window->get_pipe();
window->clear_pipe();