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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 "src/common/assert-scope.h"
#include "src/base/bit-field.h"
#include "src/base/lazy-instance.h"
#include "src/base/platform/platform.h"
#include "src/execution/isolate.h"
#include "src/utils/utils.h"
namespace v8 {
namespace internal {
namespace {
template <PerThreadAssertType kType>
using PerThreadDataBit = base::BitField<bool, kType, 1>;
// Thread-local storage for assert data. Default all asserts to "allow".
thread_local uint32_t current_per_thread_assert_data(~0);
} // namespace
template <PerThreadAssertType kType, bool kAllow>
PerThreadAssertScope<kType, kAllow>::PerThreadAssertScope()
: old_data_(current_per_thread_assert_data) {
current_per_thread_assert_data =
PerThreadDataBit<kType>::update(old_data_.value(), kAllow);
}
template <PerThreadAssertType kType, bool kAllow>
PerThreadAssertScope<kType, kAllow>::~PerThreadAssertScope() {
if (!old_data_.has_value()) return;
Release();
}
template <PerThreadAssertType kType, bool kAllow>
void PerThreadAssertScope<kType, kAllow>::Release() {
current_per_thread_assert_data = old_data_.value();
old_data_.reset();
}
// static
template <PerThreadAssertType kType, bool kAllow>
bool PerThreadAssertScope<kType, kAllow>::IsAllowed() {
return PerThreadDataBit<kType>::decode(current_per_thread_assert_data);
}
#define PER_ISOLATE_ASSERT_SCOPE_DEFINITION(ScopeType, field, enable) \
ScopeType::ScopeType(Isolate* isolate) \
: isolate_(isolate), old_data_(isolate->field()) { \
DCHECK_NOT_NULL(isolate); \
isolate_->set_##field(enable); \
} \
\
ScopeType::~ScopeType() { isolate_->set_##field(old_data_); } \
\
/* static */ \
bool ScopeType::IsAllowed(Isolate* isolate) { return isolate->field(); } \
\
/* static */ \
void ScopeType::Open(Isolate* isolate, bool* was_execution_allowed) { \
DCHECK_NOT_NULL(isolate); \
DCHECK_NOT_NULL(was_execution_allowed); \
*was_execution_allowed = isolate->field(); \
isolate->set_##field(enable); \
} \
/* static */ \
void ScopeType::Close(Isolate* isolate, bool was_execution_allowed) { \
DCHECK_NOT_NULL(isolate); \
isolate->set_##field(was_execution_allowed); \
}
#define PER_ISOLATE_ASSERT_ENABLE_SCOPE_DEFINITION(EnableType, _, field, \
enable) \
PER_ISOLATE_ASSERT_SCOPE_DEFINITION(EnableType, field, enable)
#define PER_ISOLATE_ASSERT_DISABLE_SCOPE_DEFINITION(_, DisableType, field, \
enable) \
PER_ISOLATE_ASSERT_SCOPE_DEFINITION(DisableType, field, enable)
PER_ISOLATE_ASSERT_TYPE(PER_ISOLATE_ASSERT_ENABLE_SCOPE_DEFINITION, true)
PER_ISOLATE_ASSERT_TYPE(PER_ISOLATE_ASSERT_DISABLE_SCOPE_DEFINITION, false)
// -----------------------------------------------------------------------------
// Instantiations.
template class PerThreadAssertScope<HEAP_ALLOCATION_ASSERT, false>;
template class PerThreadAssertScope<HEAP_ALLOCATION_ASSERT, true>;
template class PerThreadAssertScope<SAFEPOINTS_ASSERT, false>;
template class PerThreadAssertScope<SAFEPOINTS_ASSERT, true>;
template class PerThreadAssertScope<HANDLE_ALLOCATION_ASSERT, false>;
template class PerThreadAssertScope<HANDLE_ALLOCATION_ASSERT, true>;
template class PerThreadAssertScope<HANDLE_DEREFERENCE_ASSERT, false>;
template class PerThreadAssertScope<HANDLE_DEREFERENCE_ASSERT, true>;
template class PerThreadAssertScope<CODE_DEPENDENCY_CHANGE_ASSERT, false>;
template class PerThreadAssertScope<CODE_DEPENDENCY_CHANGE_ASSERT, true>;
template class PerThreadAssertScope<CODE_ALLOCATION_ASSERT, false>;
template class PerThreadAssertScope<CODE_ALLOCATION_ASSERT, true>;
template class PerThreadAssertScope<GC_MOLE, false>;
} // namespace internal
} // namespace v8
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