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egl/dri2: Use util_call_once_data to replace usage of mtx_t glFlushMutex

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Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19154>
This commit is contained in:
Yonggang Luo 2022-08-24 04:07:20 +08:00 • committed by Marge Bot
parent 56a34d1568
commit 86290c81b2
1 changed files with 10 additions and 5 deletions
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15
src/egl/drivers/dri2/egl_dri2.c
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@ -65,6 +65,7 @@
#include "util/libsync.h"
#include "util/os_file.h"
#include "util/u_atomic.h"
#include "util/u_call_once.h"
#include "util/u_vector.h"
#include "mapi/glapi/glapi.h"
#include "util/bitscan.h"
@ -132,16 +133,20 @@ dri_set_background_context(void *loaderPrivate)
_eglBindContextToThread(ctx, t);
}
static void
dri2_gl_flush_get(_glapi_proc *glFlush)
{
*glFlush = _glapi_get_proc_address("glFlush");
}
static void
dri2_gl_flush()
{
static void (*glFlush)(void);
static mtx_t glFlushMutex = _MTX_INITIALIZER_NP;
static util_once_flag once = UTIL_ONCE_FLAG_INIT;
mtx_lock(&glFlushMutex);
if (!glFlush)
glFlush = _glapi_get_proc_address("glFlush");
mtx_unlock(&glFlushMutex);
util_call_once_data(&once,
(util_call_once_data_func)dri2_gl_flush_get, &glFlush);
/* if glFlush is not available things are horribly broken */
if (!glFlush) {