4e53b1a1a7
BUG= Review-Url: https://codereview.chromium.org/2125023004 Cr-Commit-Position: refs/heads/master@{#37599}
133 lines
3.0 KiB
C++
133 lines
3.0 KiB
C++
// Copyright 2012 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "src/v8.h"
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#include "src/assembler.h"
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#include "src/base/once.h"
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#include "src/base/platform/platform.h"
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#include "src/bootstrapper.h"
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#include "src/crankshaft/lithium-allocator.h"
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#include "src/debug/debug.h"
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#include "src/deoptimizer.h"
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#include "src/elements.h"
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#include "src/frames.h"
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#include "src/isolate.h"
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#include "src/libsampler/sampler.h"
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#include "src/objects.h"
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#include "src/profiler/heap-profiler.h"
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#include "src/runtime-profiler.h"
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#include "src/snapshot/natives.h"
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#include "src/snapshot/snapshot.h"
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namespace v8 {
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namespace internal {
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V8_DECLARE_ONCE(init_once);
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#ifdef V8_USE_EXTERNAL_STARTUP_DATA
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V8_DECLARE_ONCE(init_natives_once);
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V8_DECLARE_ONCE(init_snapshot_once);
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#endif
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v8::Platform* V8::platform_ = NULL;
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bool V8::Initialize() {
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InitializeOncePerProcess();
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return true;
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}
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void V8::TearDown() {
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Bootstrapper::TearDownExtensions();
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ElementsAccessor::TearDown();
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LOperand::TearDownCaches();
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RegisteredExtension::UnregisterAll();
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Isolate::GlobalTearDown();
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sampler::Sampler::TearDown();
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FlagList::ResetAllFlags(); // Frees memory held by string arguments.
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}
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void V8::InitializeOncePerProcessImpl() {
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FlagList::EnforceFlagImplications();
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if (FLAG_predictable && FLAG_random_seed == 0) {
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// Avoid random seeds in predictable mode.
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FLAG_random_seed = 12347;
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}
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if (FLAG_stress_compaction) {
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FLAG_force_marking_deque_overflows = true;
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FLAG_gc_global = true;
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FLAG_max_semi_space_size = 1;
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}
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if (FLAG_turbo && strcmp(FLAG_turbo_filter, "~~") == 0) {
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const char* filter_flag = "--turbo-filter=*";
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FlagList::SetFlagsFromString(filter_flag, StrLength(filter_flag));
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}
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base::OS::Initialize(FLAG_random_seed, FLAG_hard_abort, FLAG_gc_fake_mmap);
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Isolate::InitializeOncePerProcess();
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sampler::Sampler::SetUp();
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CpuFeatures::Probe(false);
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ElementsAccessor::InitializeOncePerProcess();
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LOperand::SetUpCaches();
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SetUpJSCallerSavedCodeData();
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ExternalReference::SetUp();
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Bootstrapper::InitializeOncePerProcess();
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}
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void V8::InitializeOncePerProcess() {
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base::CallOnce(&init_once, &InitializeOncePerProcessImpl);
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}
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void V8::InitializePlatform(v8::Platform* platform) {
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CHECK(!platform_);
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CHECK(platform);
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platform_ = platform;
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}
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void V8::ShutdownPlatform() {
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CHECK(platform_);
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platform_ = NULL;
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}
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v8::Platform* V8::GetCurrentPlatform() {
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DCHECK(platform_);
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return platform_;
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}
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void V8::SetPlatformForTesting(v8::Platform* platform) { platform_ = platform; }
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void V8::SetNativesBlob(StartupData* natives_blob) {
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#ifdef V8_USE_EXTERNAL_STARTUP_DATA
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base::CallOnce(&init_natives_once, &SetNativesFromFile, natives_blob);
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#else
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CHECK(false);
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#endif
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}
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void V8::SetSnapshotBlob(StartupData* snapshot_blob) {
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#ifdef V8_USE_EXTERNAL_STARTUP_DATA
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base::CallOnce(&init_snapshot_once, &SetSnapshotFromFile, snapshot_blob);
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#else
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CHECK(false);
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#endif
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}
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} // namespace internal
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} // namespace v8
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