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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 "content/common/skia_utils.h"
#include "base/command_line.h"
#include "base/feature_list.h"
#include "base/strings/string_number_conversions.h"
#include "base/system/sys_info.h"
#include "base/task/single_thread_task_runner.h"
#include "base/trace_event/memory_dump_manager.h"
#include "build/build_config.h"
#include "content/public/common/content_switches.h"
#include "skia/ext/event_tracer_impl.h"
#include "skia/ext/skia_memory_dump_provider.h"
#include "third_party/skia/include/core/SkGraphics.h"
namespace content {
namespace {
// Maximum allocation size allowed for image scaling filters that
// require pre-scaling. Skia will fallback to a filter that doesn't
// require pre-scaling if the default filter would require an
// allocation that exceeds this limit.
const size_t kImageCacheSingleAllocationByteLimit = 64 * 1024 * 1024;
} // namespace
void InitializeSkia() {
// Make sure that any switches used here are propagated to the renderer and
// GPU processes.
const base::CommandLine& cmd = *base::CommandLine::ForCurrentProcess();
if (!cmd.HasSwitch(switches::kDisableSkiaRuntimeOpts)) {
SkGraphics::Init();
}
const int kMB = 1024 * 1024;
// Could also reduce the maximum number of cached strikes, but the intent
// being to reduce memory usage, only control cache memory usage.
SkGraphics::SetFontCacheLimit(kMB);
#if !BUILDFLAG(IS_ANDROID)
size_t font_cache_limit;
if (cmd.HasSwitch(switches::kSkiaFontCacheLimitMb)) {
if (base::StringToSizeT(
cmd.GetSwitchValueASCII(switches::kSkiaFontCacheLimitMb),
&font_cache_limit)) {
SkGraphics::SetFontCacheLimit(font_cache_limit * kMB);
}
}
size_t resource_cache_limit;
if (cmd.HasSwitch(switches::kSkiaResourceCacheLimitMb)) {
if (base::StringToSizeT(
cmd.GetSwitchValueASCII(switches::kSkiaResourceCacheLimitMb),
&resource_cache_limit)) {
SkGraphics::SetResourceCacheTotalByteLimit(resource_cache_limit * kMB);
}
}
#endif
InitSkiaEventTracer();
base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
skia::SkiaMemoryDumpProvider::GetInstance(), "Skia", nullptr);
SkGraphics::SetResourceCacheSingleAllocationByteLimit(
kImageCacheSingleAllocationByteLimit);
}
} // namespace content
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