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Unified Diff: content/browser/gpu/browser_gpu_memory_buffer_manager.cc

Issue 634083002: gpu: Compositor management of GpuMemoryBuffer instances. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@cc-pre-chromium-image-refactor
Patch Set: rebase Created 6 years, 2 months ago
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Index: content/browser/gpu/browser_gpu_memory_buffer_manager.cc
diff --git a/content/browser/gpu/browser_gpu_memory_buffer_manager.cc b/content/browser/gpu/browser_gpu_memory_buffer_manager.cc
new file mode 100644
index 0000000000000000000000000000000000000000..58c12117d51ea4fd8486427593fb7e233a77fc3e
--- /dev/null
+++ b/content/browser/gpu/browser_gpu_memory_buffer_manager.cc
@@ -0,0 +1,146 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "content/browser/gpu/browser_gpu_memory_buffer_manager.h"
+
+#include "base/bind.h"
+#include "base/debug/trace_event.h"
+#include "base/lazy_instance.h"
+#include "base/synchronization/waitable_event.h"
+#include "base/threading/thread_restrictions.h"
+#include "content/common/gpu/client/gpu_memory_buffer_impl.h"
+#include "content/public/browser/browser_thread.h"
+
+namespace content {
+namespace {
+
+void GpuMemoryBufferAllocatedForChildProcess(
+ const BrowserGpuMemoryBufferManager::AllocationCallback& callback,
+ const gfx::GpuMemoryBufferHandle& handle) {
+ DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+
+ callback.Run(handle);
+}
+
+BrowserGpuMemoryBufferManager* g_gpu_memory_buffer_manager = nullptr;
+
+} // namespace
+
+struct BrowserGpuMemoryBufferManager::AllocateGpuMemoryBufferRequest {
+ AllocateGpuMemoryBufferRequest(const gfx::Size& size,
+ gfx::GpuMemoryBuffer::Format format,
+ gfx::GpuMemoryBuffer::Usage usage,
+ int client_id)
+ : event(true, false),
+ size(size),
+ format(format),
+ usage(usage),
+ client_id(client_id) {}
+ ~AllocateGpuMemoryBufferRequest() {}
+ base::WaitableEvent event;
+ gfx::Size size;
+ gfx::GpuMemoryBuffer::Format format;
+ gfx::GpuMemoryBuffer::Usage usage;
+ int client_id;
+ scoped_ptr<gfx::GpuMemoryBuffer> result;
+};
+
+BrowserGpuMemoryBufferManager::BrowserGpuMemoryBufferManager(int gpu_client_id)
+ : gpu_client_id_(gpu_client_id) {
+ DCHECK(!g_gpu_memory_buffer_manager);
+ g_gpu_memory_buffer_manager = this;
+}
+
+BrowserGpuMemoryBufferManager::~BrowserGpuMemoryBufferManager() {
+ g_gpu_memory_buffer_manager = nullptr;
+}
+
+// static
+BrowserGpuMemoryBufferManager* BrowserGpuMemoryBufferManager::current() {
+ return g_gpu_memory_buffer_manager;
+}
+
+scoped_ptr<gfx::GpuMemoryBuffer>
+BrowserGpuMemoryBufferManager::AllocateGpuMemoryBuffer(
+ const gfx::Size& size,
+ gfx::GpuMemoryBuffer::Format format,
+ gfx::GpuMemoryBuffer::Usage usage) {
+ DCHECK(!BrowserThread::CurrentlyOn(BrowserThread::IO));
+
+ AllocateGpuMemoryBufferRequest request(size, format, usage, gpu_client_id_);
+ BrowserThread::PostTask(
+ BrowserThread::IO,
+ FROM_HERE,
+ base::Bind(&BrowserGpuMemoryBufferManager::AllocateGpuMemoryBufferOnIO,
+ base::Unretained(&request)));
+
+ // We're blocking the UI thread, which is generally undesirable.
+ TRACE_EVENT0("browser",
+ "BrowserGpuMemoryBufferManager::AllocateGpuMemoryBuffer");
+ base::ThreadRestrictions::ScopedAllowWait allow_wait;
+ request.event.Wait();
+ return request.result.Pass();
+}
+
+void BrowserGpuMemoryBufferManager::AllocateGpuMemoryBufferForChildProcess(
+ const gfx::Size& size,
+ gfx::GpuMemoryBuffer::Format format,
+ gfx::GpuMemoryBuffer::Usage usage,
+ base::ProcessHandle child_process_handle,
+ int child_client_id,
+ const AllocationCallback& callback) {
+ DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+
+ GpuMemoryBufferImpl::AllocateForChildProcess(
+ size,
+ format,
+ usage,
+ child_process_handle,
+ child_client_id,
+ base::Bind(&GpuMemoryBufferAllocatedForChildProcess, callback));
+}
+
+gfx::GpuMemoryBuffer*
+BrowserGpuMemoryBufferManager::GpuMemoryBufferFromClientBuffer(
+ ClientBuffer buffer) {
+ return GpuMemoryBufferImpl::FromClientBuffer(buffer);
+}
+
+void BrowserGpuMemoryBufferManager::ChildProcessDeletedGpuMemoryBuffer(
+ gfx::GpuMemoryBufferType type,
+ const gfx::GpuMemoryBufferId& id,
+ base::ProcessHandle child_process_handle) {
+ DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+
+ GpuMemoryBufferImpl::DeletedByChildProcess(type, id, child_process_handle);
+}
+
+void BrowserGpuMemoryBufferManager::ProcessRemoved(
+ base::ProcessHandle process_handle) {
+ // TODO(reveman): Handle child process removal correctly.
+}
+
+// static
+void BrowserGpuMemoryBufferManager::AllocateGpuMemoryBufferOnIO(
+ AllocateGpuMemoryBufferRequest* request) {
+ GpuMemoryBufferImpl::Create(
+ request->size,
+ request->format,
+ request->usage,
+ request->client_id,
+ base::Bind(&BrowserGpuMemoryBufferManager::GpuMemoryBufferCreatedOnIO,
+ base::Unretained(request)));
+}
+
+// static
+void BrowserGpuMemoryBufferManager::GpuMemoryBufferCreatedOnIO(
+ AllocateGpuMemoryBufferRequest* request,
+ scoped_ptr<GpuMemoryBufferImpl> buffer) {
+ DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+
+ request->result = buffer.PassAs<gfx::GpuMemoryBuffer>();
+ request->event.Signal();
+}
+
+} // namespace content
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