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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "gpu/command_buffer/service/gr_cache_controller.h"
#include <chrono>
#include "base/feature_list.h"
#include "base/functional/bind.h"
#include "base/task/single_thread_task_runner.h"
#include "build/build_config.h"
#include "gpu/command_buffer/service/shared_context_state.h"
#include "gpu/command_buffer/service/skia_utils.h"
#include "gpu/config/gpu_finch_features.h"
#include "gpu/ipc/common/gpu_client_ids.h"
#include "ui/gl/gl_bindings.h"
#include "ui/gl/gl_context.h"
namespace gpu {
namespace raster {
GrCacheController::GrCacheController(SharedContextState* context_state)
: context_state_(context_state),
task_runner_(base::SingleThreadTaskRunner::HasCurrentDefault()
? base::SingleThreadTaskRunner::GetCurrentDefault()
: nullptr) {}
GrCacheController::GrCacheController(
SharedContextState* context_state,
scoped_refptr<base::SingleThreadTaskRunner> task_runner)
: context_state_(context_state), task_runner_(std::move(task_runner)) {}
GrCacheController::~GrCacheController() = default;
void GrCacheController::ScheduleGrContextCleanup() {
DCHECK(context_state_->IsCurrent(nullptr));
if (!context_state_->gr_context())
return;
if (!task_runner_) {
// No way to estimate idle. Just periodically call PerformDeferredCleanup.
PerformDeferredCleanupThrottled();
return;
}
DCHECK(task_runner_->BelongsToCurrentThread());
current_idle_id_++;
if (!purge_gr_cache_cb_.IsCancelled())
return;
PerformDeferredCleanup();
constexpr int kIdleCleanupDelaySeconds = 1;
purge_gr_cache_cb_.Reset(base::BindOnce(&GrCacheController::PurgeGrCache,
base::Unretained(this),
current_idle_id_));
task_runner_->PostDelayedTask(FROM_HERE, purge_gr_cache_cb_.callback(),
base::Seconds(kIdleCleanupDelaySeconds));
}
void GrCacheController::PerformDeferredCleanupThrottled() {
constexpr base::TimeDelta kTimeout = base::Seconds(1);
base::TimeTicks now = base::TimeTicks::Now();
if (now - last_cleanup_timestamp_ < kTimeout) {
return;
}
last_cleanup_timestamp_ = now;
PerformDeferredCleanup();
}
void GrCacheController::PerformDeferredCleanup() {
#if BUILDFLAG(IS_MAC)
constexpr int kOldResourceDelaySeconds = 5;
#else
constexpr int kOldResourceDelaySeconds = 1;
#endif
// Here we ask GrContext to free any resources that haven't been used in
// a long while even if it is under budget. Below we set a call back to
// purge all possible GrContext resources if the context itself is not being
// used.
context_state_->set_need_context_state_reset(true);
context_state_->gr_context()->performDeferredCleanup(
std::chrono::seconds(kOldResourceDelaySeconds));
}
void GrCacheController::PurgeGrCache(uint64_t idle_id) {
purge_gr_cache_cb_.Cancel();
// We don't care which surface is current. This improves
// performance. https://crbug.com/457431
if (!context_state_->MakeCurrent(nullptr))
return;
// If the idle id changed, the context was used after this callback was
// posted. Schedule another one.
if (idle_id != current_idle_id_) {
ScheduleGrContextCleanup();
return;
}
context_state_->set_need_context_state_reset(true);
// Force Skia to check fences to determine what can be freed.
context_state_->gr_context()->checkAsyncWorkCompletion();
{
std::optional<gpu::raster::GrShaderCache::ScopedCacheUse> cache_use;
// ScopedCacheUse is to avoid the empty/invalid client id DCHECKS caused
// while accessing GrShaderCache. Note that since the actual client_id here
// does not matter, we are using gpu::kDisplayCompositorClientId.
context_state_->UseShaderCache(cache_use, gpu::kDisplayCompositorClientId);
context_state_->gr_context()->freeGpuResources();
}
// Skia may have released resources, but the driver may not process that
// without a flush.
if (features::EnablePruneOldTransferCacheEntries()) {
GrFlushInfo flush_info;
gpu::AddVulkanCleanupTaskForSkiaFlush(context_state_->vk_context_provider(),
&flush_info);
context_state_->gr_context()->flush(flush_info);
context_state_->gr_context()->submit();
}
if (context_state_->GrContextIsGL()) {
auto* api = gl::g_current_gl_context;
api->glFlushFn();
}
// Skia store VkPipeline cache only on demand. We do it when we're idle idle
// as it might take time.
context_state_->StoreVkPipelineCacheIfNeeded();
}
} // namespace raster
} // namespace gpu
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