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-rw-r--r--src/egl/drivers/dri2/egl_dri2.c192
-rw-r--r--src/egl/drivers/dri2/egl_dri2.h2
2 files changed, 188 insertions, 6 deletions
diff --git a/src/egl/drivers/dri2/egl_dri2.c b/src/egl/drivers/dri2/egl_dri2.c
index 8f50f0ce573..490b0409c98 100644
--- a/src/egl/drivers/dri2/egl_dri2.c
+++ b/src/egl/drivers/dri2/egl_dri2.c
@@ -38,6 +38,8 @@
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
+#include <c11/threads.h>
+#include <time.h>
#ifdef HAVE_LIBDRM
#include <xf86drm.h>
#include <drm_fourcc.h>
@@ -623,6 +625,8 @@ dri2_setup_screen(_EGLDisplay *disp)
disp->Extensions.KHR_cl_event2 = EGL_TRUE;
}
+ disp->Extensions.KHR_reusable_sync = EGL_TRUE;
+
if (dri2_dpy->image) {
if (dri2_dpy->image->base.version >= 10 &&
dri2_dpy->image->getCapabilities != NULL) {
@@ -2394,7 +2398,12 @@ dri2_egl_unref_sync(struct dri2_egl_display *dri2_dpy,
struct dri2_egl_sync *dri2_sync)
{
if (p_atomic_dec_zero(&dri2_sync->refcount)) {
- dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, dri2_sync->fence);
+ if (dri2_sync->base.Type == EGL_SYNC_REUSABLE_KHR)
+ cnd_destroy(&dri2_sync->cond);
+
+ if (dri2_sync->fence)
+ dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, dri2_sync->fence);
+
free(dri2_sync);
}
}
@@ -2408,6 +2417,8 @@ dri2_create_sync(_EGLDriver *drv, _EGLDisplay *dpy,
struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
struct dri2_egl_sync *dri2_sync;
+ EGLint ret;
+ pthread_condattr_t attr;
dri2_sync = calloc(1, sizeof(struct dri2_egl_sync));
if (!dri2_sync) {
@@ -2450,6 +2461,37 @@ dri2_create_sync(_EGLDriver *drv, _EGLDisplay *dpy,
dri2_sync->fence, 0, 0))
dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
break;
+
+ case EGL_SYNC_REUSABLE_KHR:
+ /* intialize attr */
+ ret = pthread_condattr_init(&attr);
+
+ if (ret) {
+ _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
+ free(dri2_sync);
+ return NULL;
+ }
+
+ /* change clock attribute to CLOCK_MONOTONIC */
+ ret = pthread_condattr_setclock(&attr, CLOCK_MONOTONIC);
+
+ if (ret) {
+ _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
+ free(dri2_sync);
+ return NULL;
+ }
+
+ ret = pthread_cond_init(&dri2_sync->cond, &attr);
+
+ if (ret) {
+ _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
+ free(dri2_sync);
+ return NULL;
+ }
+
+ /* initial status of reusable sync must be "unsignaled" */
+ dri2_sync->base.SyncStatus = EGL_UNSIGNALED_KHR;
+ break;
}
p_atomic_set(&dri2_sync->refcount, 1);
@@ -2461,9 +2503,27 @@ dri2_destroy_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
{
struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
+ EGLint ret = EGL_TRUE;
+ EGLint err;
+
+ /* if type of sync is EGL_SYNC_REUSABLE_KHR and it is not signaled yet,
+ * then unlock all threads possibly blocked by the reusable sync before
+ * destroying it.
+ */
+ if (dri2_sync->base.Type == EGL_SYNC_REUSABLE_KHR &&
+ dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
+ dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
+ /* unblock all threads currently blocked by sync */
+ err = cnd_broadcast(&dri2_sync->cond);
+ if (err) {
+ _eglError(EGL_BAD_ACCESS, "eglDestroySyncKHR");
+ ret = EGL_FALSE;
+ }
+ }
dri2_egl_unref_sync(dri2_dpy, dri2_sync);
- return EGL_TRUE;
+
+ return ret;
}
static EGLint
@@ -2471,10 +2531,16 @@ dri2_client_wait_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
EGLint flags, EGLTime timeout)
{
_EGLContext *ctx = _eglGetCurrentContext();
+ struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
unsigned wait_flags = 0;
+
+ /* timespecs for cnd_timedwait */
+ struct timespec current;
+ xtime expire;
+
EGLint ret = EGL_CONDITION_SATISFIED_KHR;
/* The EGL_KHR_fence_sync spec states:
@@ -2488,17 +2554,130 @@ dri2_client_wait_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
/* the sync object should take a reference while waiting */
dri2_egl_ref_sync(dri2_sync);
- if (dri2_dpy->fence->client_wait_sync(dri2_ctx ? dri2_ctx->dri_context : NULL,
+ switch (sync->Type) {
+ case EGL_SYNC_FENCE_KHR:
+ case EGL_SYNC_CL_EVENT_KHR:
+ if (dri2_dpy->fence->client_wait_sync(dri2_ctx ? dri2_ctx->dri_context : NULL,
dri2_sync->fence, wait_flags,
timeout))
- dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
- else
- ret = EGL_TIMEOUT_EXPIRED_KHR;
+ dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
+ else
+ ret = EGL_TIMEOUT_EXPIRED_KHR;
+ break;
+
+ case EGL_SYNC_REUSABLE_KHR:
+ if (dri2_ctx && dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR &&
+ (flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)) {
+ /* flush context if EGL_SYNC_FLUSH_COMMANDS_BIT_KHR is set */
+ if (dri2_drv->glFlush)
+ dri2_drv->glFlush();
+ }
+
+ /* if timeout is EGL_FOREVER_KHR, it should wait without any timeout.*/
+ if (timeout == EGL_FOREVER_KHR) {
+ if (mtx_lock(&dri2_sync->mutex)) {
+ ret = EGL_FALSE;
+ goto cleanup;
+ }
+
+ ret = cnd_wait(&dri2_sync->cond, &dri2_sync->mutex);
+ if (mtx_unlock(&dri2_sync->mutex)) {
+ ret = EGL_FALSE;
+ goto cleanup;
+ }
+
+ if (ret) {
+ _eglError(EGL_BAD_PARAMETER, "eglClientWaitSyncKHR");
+ ret = EGL_FALSE;
+ }
+ } else {
+ /* if reusable sync has not been yet signaled */
+ if (dri2_sync->base.SyncStatus != EGL_SIGNALED_KHR) {
+ clock_gettime(CLOCK_MONOTONIC, &current);
+
+ /* calculating when to expire */
+ expire.nsec = timeout % 1000000000L;
+ expire.sec = timeout / 1000000000L;
+
+ expire.nsec += current.tv_nsec;
+ expire.sec += current.tv_sec;
+
+ /* expire.nsec now is a number between 0 and 1999999998 */
+ if (expire.nsec > 999999999L) {
+ expire.sec++;
+ expire.nsec -= 1000000000L;
+ }
+
+ if (mtx_lock(&dri2_sync->mutex)) {
+ ret = EGL_FALSE;
+ goto cleanup;
+ }
+
+ ret = cnd_timedwait(&dri2_sync->cond, &dri2_sync->mutex, &expire);
+
+ if (mtx_unlock(&dri2_sync->mutex)) {
+ ret = EGL_FALSE;
+ goto cleanup;
+ }
+
+ if (ret)
+ if (ret == thrd_busy) {
+ if (dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
+ ret = EGL_TIMEOUT_EXPIRED_KHR;
+ } else {
+ _eglError(EGL_BAD_ACCESS, "eglClientWaitSyncKHR");
+ ret = EGL_FALSE;
+ }
+ }
+ }
+ }
+ break;
+ }
+
+ cleanup:
dri2_egl_unref_sync(dri2_dpy, dri2_sync);
+
+ if (ret == EGL_FALSE) {
+ _eglError(EGL_BAD_ACCESS, "eglClientWaitSyncKHR");
+ return EGL_FALSE;
+ }
+
return ret;
}
+static EGLBoolean
+dri2_signal_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
+ EGLenum mode)
+{
+ struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
+ EGLint ret;
+
+ if (sync->Type != EGL_SYNC_REUSABLE_KHR) {
+ _eglError(EGL_BAD_MATCH, "eglSignalSyncKHR");
+ return EGL_FALSE;
+ }
+
+ if (mode != EGL_SIGNALED_KHR && mode != EGL_UNSIGNALED_KHR) {
+ _eglError(EGL_BAD_ATTRIBUTE, "eglSignalSyncKHR");
+ return EGL_FALSE;
+ }
+
+ dri2_sync->base.SyncStatus = mode;
+
+ if (mode == EGL_SIGNALED_KHR) {
+ ret = cnd_broadcast(&dri2_sync->cond);
+
+ /* fail to broadcast */
+ if (ret) {
+ _eglError(EGL_BAD_ACCESS, "eglSignalSyncKHR");
+ return EGL_FALSE;
+ }
+ }
+
+ return EGL_TRUE;
+}
+
static EGLint
dri2_server_wait_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
{
@@ -2620,6 +2799,7 @@ _eglBuiltInDriverDRI2(const char *args)
dri2_drv->base.API.GetSyncValuesCHROMIUM = dri2_get_sync_values_chromium;
dri2_drv->base.API.CreateSyncKHR = dri2_create_sync;
dri2_drv->base.API.ClientWaitSyncKHR = dri2_client_wait_sync;
+ dri2_drv->base.API.SignalSyncKHR = dri2_signal_sync;
dri2_drv->base.API.WaitSyncKHR = dri2_server_wait_sync;
dri2_drv->base.API.DestroySyncKHR = dri2_destroy_sync;
diff --git a/src/egl/drivers/dri2/egl_dri2.h b/src/egl/drivers/dri2/egl_dri2.h
index 52ad92b182d..ef799398474 100644
--- a/src/egl/drivers/dri2/egl_dri2.h
+++ b/src/egl/drivers/dri2/egl_dri2.h
@@ -307,6 +307,8 @@ struct dri2_egl_image
struct dri2_egl_sync {
_EGLSync base;
+ mtx_t mutex;
+ cnd_t cond;
int refcount;
void *fence;
};
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-27 11:13:06 +0000