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// Copyright 2014 the V8 project 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 "test/unittests/test-utils.h"
#include "include/libplatform/libplatform.h"
#include "include/v8.h"
#include "src/api/api-inl.h"
#include "src/base/platform/time.h"
#include "src/execution/isolate.h"
#include "src/flags/flags.h"
#include "src/init/v8.h"
#include "src/objects/objects-inl.h"
namespace v8 {
namespace {
// counter_lookup_callback doesn't pass through any state information about
// the current Isolate, so we have to store the current counter map somewhere.
// Fortunately tests run serially, so we can just store it in a static global.
CounterMap* kCurrentCounterMap = nullptr;
} // namespace
IsolateWrapper::IsolateWrapper(CountersMode counters_mode,
PointerCompressionMode pointer_compression_mode)
: array_buffer_allocator_(
v8::ArrayBuffer::Allocator::NewDefaultAllocator()) {
CHECK_NULL(kCurrentCounterMap);
v8::Isolate::CreateParams create_params;
create_params.array_buffer_allocator = array_buffer_allocator_.get();
if (counters_mode == kEnableCounters) {
counter_map_ = std::make_unique<CounterMap>();
kCurrentCounterMap = counter_map_.get();
create_params.counter_lookup_callback = [](const char* name) {
CHECK_NOT_NULL(kCurrentCounterMap);
// If the name doesn't exist in the counter map, operator[] will default
// initialize it to zero.
return &(*kCurrentCounterMap)[name];
};
} else {
create_params.counter_lookup_callback = [](const char* name) -> int* {
return nullptr;
};
}
if (pointer_compression_mode == kEnforcePointerCompression) {
isolate_ = reinterpret_cast<v8::Isolate*>(
i::Isolate::New(i::IsolateAllocationMode::kInV8Heap));
v8::Isolate::Initialize(isolate(), create_params);
} else {
isolate_ = v8::Isolate::New(create_params);
}
CHECK_NOT_NULL(isolate());
}
IsolateWrapper::~IsolateWrapper() {
v8::Platform* platform = internal::V8::GetCurrentPlatform();
CHECK_NOT_NULL(platform);
while (platform::PumpMessageLoop(platform, isolate())) continue;
isolate_->Dispose();
if (counter_map_) {
CHECK_EQ(kCurrentCounterMap, counter_map_.get());
kCurrentCounterMap = nullptr;
} else {
CHECK_NULL(kCurrentCounterMap);
}
}
namespace internal {
SaveFlags::SaveFlags() {
// For each flag, save the current flag value.
#define FLAG_MODE_APPLY(ftype, ctype, nam, def, cmt) SAVED_##nam = FLAG_##nam;
#include "src/flags/flag-definitions.h" // NOLINT
#undef FLAG_MODE_APPLY
}
SaveFlags::~SaveFlags() {
// For each flag, set back the old flag value if it changed (don't write the
// flag if it didn't change, to keep TSAN happy).
#define FLAG_MODE_APPLY(ftype, ctype, nam, def, cmt) \
if (SAVED_##nam != FLAG_##nam) { \
FLAG_##nam = SAVED_##nam; \
}
#include "src/flags/flag-definitions.h" // NOLINT
#undef FLAG_MODE_APPLY
}
} // namespace internal
} // namespace v8
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