/**
* Destroy this framebuffer. Both stw_dev::fb_mutex and stw_framebuffer::mutex
* must be held, by this order. If there are still references to the
* framebuffer, nothing will happen.
*/
static INLINE void
stw_framebuffer_destroy_locked(
struct stw_framebuffer *fb )
{
struct stw_framebuffer **link;
/* check the reference count */
fb->refcnt--;
if (fb->refcnt) {
pipe_mutex_unlock( fb->mutex );
return;
}
link = &stw_dev->fb_head;
while (*link != fb)
link = &(*link)->next;
assert(*link);
*link = fb->next;
fb->next = NULL;
if(fb->shared_surface)
stw_dev->stw_winsys->shared_surface_close(stw_dev->screen, fb->shared_surface);
stw_st_destroy_framebuffer_locked(fb->stfb);
ReleaseDC(fb->hWnd, fb->hDC);
pipe_mutex_unlock( fb->mutex );
pipe_mutex_destroy( fb->mutex );
FREE( fb );
}
/**
* Decrement the reference count on the given stw_framebuffer object.
* If the reference count hits zero, destroy the object.
*
* Note: Both stw_dev::fb_mutex and stw_framebuffer::mutex must already be
* locked. After this function completes, the fb's mutex will be unlocked.
*/
void
stw_framebuffer_release_locked(struct stw_framebuffer *fb)
{
struct stw_framebuffer **link;
assert(fb);
assert(stw_own_mutex(&fb->mutex));
assert(stw_own_mutex(&stw_dev->fb_mutex));
/* check the reference count */
fb->refcnt--;
if (fb->refcnt) {
stw_framebuffer_unlock(fb);
return;
}
/* remove this stw_framebuffer from the device's linked list */
link = &stw_dev->fb_head;
while (*link != fb)
link = &(*link)->next;
assert(*link);
*link = fb->next;
fb->next = NULL;
if (fb->shared_surface)
stw_dev->stw_winsys->shared_surface_close(stw_dev->screen,
fb->shared_surface);
stw_st_destroy_framebuffer_locked(fb->stfb);
stw_framebuffer_unlock(fb);
DeleteCriticalSection(&fb->mutex);
FREE( fb );
}
