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// Copyright 2010 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef V8_VM_STATE_INL_H_
#define V8_VM_STATE_INL_H_
#include "vm-state.h"
#include "runtime-profiler.h"
namespace v8 {
namespace internal {
//
// VMState class implementation. A simple stack of VM states held by the
// logger and partially threaded through the call stack. States are pushed by
// VMState construction and popped by destruction.
//
inline const char* StateToString(StateTag state) {
switch (state) {
case JS:
return "JS";
case GC:
return "GC";
case COMPILER:
return "COMPILER";
case OTHER:
return "OTHER";
case EXTERNAL:
return "EXTERNAL";
default:
UNREACHABLE();
return NULL;
}
}
VMState::VMState(Isolate* isolate, StateTag tag)
: isolate_(isolate), previous_tag_(isolate->current_vm_state()) {
if (FLAG_log_state_changes) {
LOG(isolate, UncheckedStringEvent("Entering", StateToString(tag)));
LOG(isolate, UncheckedStringEvent("From", StateToString(previous_tag_)));
}
isolate_->SetCurrentVMState(tag);
}
VMState::~VMState() {
if (FLAG_log_state_changes) {
LOG(isolate_,
UncheckedStringEvent("Leaving",
StateToString(isolate_->current_vm_state())));
LOG(isolate_,
UncheckedStringEvent("To", StateToString(previous_tag_)));
}
isolate_->SetCurrentVMState(previous_tag_);
}
ExternalCallbackScope::ExternalCallbackScope(Isolate* isolate, Address callback)
: isolate_(isolate), previous_callback_(isolate->external_callback()) {
isolate_->set_external_callback(callback);
}
ExternalCallbackScope::~ExternalCallbackScope() {
isolate_->set_external_callback(previous_callback_);
}
} } // namespace v8::internal
#endif // V8_VM_STATE_INL_H_
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