sp<Fence> Fence::merge(const String8& name, const sp<Fence>& f1,
const sp<Fence>& f2) {
ATRACE_CALL();
int result;
// Merge the two fences. In the case where one of the fences is not a
// valid fence (e.g. NO_FENCE) we merge the one valid fence with itself so
// that a new fence with the given name is created.
if (f1->isValid() && f2->isValid()) {
result = sync_merge(name.string(), f1->mFenceFd, f2->mFenceFd);
} else if (f1->isValid()) {
result = sync_merge(name.string(), f1->mFenceFd, f1->mFenceFd);
} else if (f2->isValid()) {
result = sync_merge(name.string(), f2->mFenceFd, f2->mFenceFd);
} else {
return NO_FENCE;
}
if (result == -1) {
status_t err = -errno;
ALOGE("merge: sync_merge(\"%s\", %d, %d) returned an error: %s (%d)",
name.string(), f1->mFenceFd, f2->mFenceFd,
strerror(-err), err);
return NO_FENCE;
}
return sp<Fence>(new Fence(result));
}
int test_fence_multi_timeline_wait(void)
{
int timelineA, timelineB, timelineC;
int fenceA, fenceB, fenceC, merged;
int valid, active, signaled, ret;
timelineA = sw_sync_timeline_create();
timelineB = sw_sync_timeline_create();
timelineC = sw_sync_timeline_create();
fenceA = sw_sync_fence_create(timelineA, "fenceA", 5);
fenceB = sw_sync_fence_create(timelineB, "fenceB", 5);
fenceC = sw_sync_fence_create(timelineC, "fenceC", 5);
merged = sync_merge("mergeFence", fenceB, fenceA);
merged = sync_merge("mergeFence", fenceC, merged);
valid = sw_sync_fence_is_valid(merged);
ASSERT(valid, "Failure merging fence from various timelines\n");
/* Confirm fence isn't signaled */
active = sync_fence_count_with_status(merged, FENCE_STATUS_ACTIVE);
ASSERT(active == 3, "Fence signaled too early!\n");
ret = sync_wait(merged, 0);
ASSERT(ret == 0,
"Failure waiting on fence until timeout\n");
ret = sw_sync_timeline_inc(timelineA, 5);
active = sync_fence_count_with_status(merged, FENCE_STATUS_ACTIVE);
signaled = sync_fence_count_with_status(merged, FENCE_STATUS_SIGNALED);
ASSERT(active == 2 && signaled == 1,
"Fence did not signal properly!\n");
ret = sw_sync_timeline_inc(timelineB, 5);
active = sync_fence_count_with_status(merged, FENCE_STATUS_ACTIVE);
signaled = sync_fence_count_with_status(merged, FENCE_STATUS_SIGNALED);
ASSERT(active == 1 && signaled == 2,
"Fence did not signal properly!\n");
ret = sw_sync_timeline_inc(timelineC, 5);
active = sync_fence_count_with_status(merged, FENCE_STATUS_ACTIVE);
signaled = sync_fence_count_with_status(merged, FENCE_STATUS_SIGNALED);
ASSERT(active == 0 && signaled == 3,
"Fence did not signal properly!\n");
/* confirm you can successfully wait */
ret = sync_wait(merged, 100);
ASSERT(ret > 0, "Failure waiting on signaled fence\n");
sw_sync_fence_destroy(merged);
sw_sync_fence_destroy(fenceC);
sw_sync_fence_destroy(fenceB);
sw_sync_fence_destroy(fenceA);
sw_sync_timeline_destroy(timelineC);
sw_sync_timeline_destroy(timelineB);
sw_sync_timeline_destroy(timelineA);
return 0;
}
sp<Fence> Fence::merge(const String8& name, const sp<Fence>& f1,
const sp<Fence>& f2) {
ATRACE_CALL();
int result = sync_merge(name.string(), f1->mFenceFd, f2->mFenceFd);
if (result == -1) {
status_t err = -errno;
ALOGE("merge: sync_merge(\"%s\", %d, %d) returned an error: %s (%d)",
name.string(), f1->mFenceFd, f2->mFenceFd,
strerror(-err), err);
return NO_FENCE;
}
return sp<Fence>(new Fence(result));
}
static int mpcs_consumer_thread(void)
{
int fence, merged, tmp, valid, it, i;
int *producer_timelines = test_data_mpsc.producer_timelines;
int consumer_timeline = test_data_mpsc.consumer_timeline;
int iterations = test_data_mpsc.iterations;
int n = test_data_mpsc.threads;
for (it = 1; it <= iterations; it++) {
fence = sw_sync_fence_create(producer_timelines[0], "name", it);
for (i = 1; i < n; i++) {
tmp = sw_sync_fence_create(producer_timelines[i],
"name", it);
merged = sync_merge("name", tmp, fence);
sw_sync_fence_destroy(tmp);
sw_sync_fence_destroy(fence);
fence = merged;
}
valid = sw_sync_fence_is_valid(fence);
ASSERT(valid, "Failure merging fences\n");
/*
* Make sure we see an increment from every producer thread.
* Vary the means by which we wait.
*/
if (iterations % 8 != 0) {
ASSERT(sync_wait(fence, -1) > 0,
"Producers did not increment as expected\n");
} else {
ASSERT(busy_wait_on_fence(fence) == 0,
"Producers did not increment as expected\n");
}
ASSERT(test_data_mpsc.counter == n * it,
"Counter value mismatch!\n");
/* Release the producer threads */
ASSERT(sw_sync_timeline_inc(consumer_timeline, 1) == 0,
"Failure releasing producer threads\n");
sw_sync_fence_destroy(fence);
}
return 0;
}
void
FenceHandle::Merge(const FenceHandle& aFenceHandle)
{
#if defined(MOZ_WIDGET_GONK) && ANDROID_VERSION >= 17
if (!aFenceHandle.IsValid()) {
return;
}
if (!IsValid()) {
mFence = aFenceHandle.mFence;
} else {
int result = sync_merge("FenceHandle", mFence->mFd, aFenceHandle.mFence->mFd);
if (result == -1) {
mFence = aFenceHandle.mFence;
} else {
mFence = new FdObj(result);
}
}
#endif
}
static void
test_sync_file_fences(struct pipe_context *ctx)
{
struct pipe_screen *screen = ctx->screen;
bool pass = true;
enum pipe_fd_type fd_type = PIPE_FD_TYPE_NATIVE_SYNC;
if (!screen->get_param(screen, PIPE_CAP_NATIVE_FENCE_FD))
return;
struct cso_context *cso = cso_create_context(ctx, 0);
struct pipe_resource *buf =
pipe_buffer_create(screen, 0, PIPE_USAGE_DEFAULT, 1024 * 1024);
struct pipe_resource *tex =
util_create_texture2d(screen, 4096, 1024, PIPE_FORMAT_R8_UNORM, 0);
struct pipe_fence_handle *buf_fence = NULL, *tex_fence = NULL;
/* Run 2 clears, get fencess. */
uint32_t value = 0;
ctx->clear_buffer(ctx, buf, 0, buf->width0, &value, sizeof(value));
ctx->flush(ctx, &buf_fence, PIPE_FLUSH_FENCE_FD);
struct pipe_box box;
u_box_2d(0, 0, tex->width0, tex->height0, &box);
ctx->clear_texture(ctx, tex, 0, &box, &value);
ctx->flush(ctx, &tex_fence, PIPE_FLUSH_FENCE_FD);
pass = pass && buf_fence && tex_fence;
/* Export fences. */
int buf_fd = screen->fence_get_fd(screen, buf_fence);
int tex_fd = screen->fence_get_fd(screen, tex_fence);
pass = pass && buf_fd >= 0 && tex_fd >= 0;
/* Merge fences. */
int merged_fd = sync_merge("test", buf_fd, tex_fd);
pass = pass && merged_fd >= 0;
/* (Re)import all fences. */
struct pipe_fence_handle *re_buf_fence = NULL, *re_tex_fence = NULL;
struct pipe_fence_handle *merged_fence = NULL;
ctx->create_fence_fd(ctx, &re_buf_fence, buf_fd, fd_type);
ctx->create_fence_fd(ctx, &re_tex_fence, tex_fd, fd_type);
ctx->create_fence_fd(ctx, &merged_fence, merged_fd, fd_type);
pass = pass && re_buf_fence && re_tex_fence && merged_fence;
/* Run another clear after waiting for everything. */
struct pipe_fence_handle *final_fence = NULL;
ctx->fence_server_sync(ctx, merged_fence);
value = 0xff;
ctx->clear_buffer(ctx, buf, 0, buf->width0, &value, sizeof(value));
ctx->flush(ctx, &final_fence, PIPE_FLUSH_FENCE_FD);
pass = pass && final_fence;
/* Wait for the last fence. */
int final_fd = screen->fence_get_fd(screen, final_fence);
pass = pass && final_fd >= 0;
pass = pass && sync_wait(final_fd, -1) == 0;
/* Check that all fences are signalled. */
pass = pass && sync_wait(buf_fd, 0) == 0;
pass = pass && sync_wait(tex_fd, 0) == 0;
pass = pass && sync_wait(merged_fd, 0) == 0;
pass = pass && screen->fence_finish(screen, NULL, buf_fence, 0);
pass = pass && screen->fence_finish(screen, NULL, tex_fence, 0);
pass = pass && screen->fence_finish(screen, NULL, re_buf_fence, 0);
pass = pass && screen->fence_finish(screen, NULL, re_tex_fence, 0);
pass = pass && screen->fence_finish(screen, NULL, merged_fence, 0);
pass = pass && screen->fence_finish(screen, NULL, final_fence, 0);
/* Cleanup. */
#ifndef PIPE_OS_WINDOWS
if (buf_fd >= 0)
close(buf_fd);
if (tex_fd >= 0)
close(tex_fd);
if (merged_fd >= 0)
close(merged_fd);
if (final_fd >= 0)
close(final_fd);
#endif
screen->fence_reference(screen, &buf_fence, NULL);
screen->fence_reference(screen, &tex_fence, NULL);
screen->fence_reference(screen, &re_buf_fence, NULL);
screen->fence_reference(screen, &re_tex_fence, NULL);
screen->fence_reference(screen, &merged_fence, NULL);
screen->fence_reference(screen, &final_fence, NULL);
cso_destroy_context(cso);
pipe_resource_reference(&buf, NULL);
pipe_resource_reference(&tex, NULL);
util_report_result(pass);
}
