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// Copyright 2010 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.
#ifndef V8_EXECUTION_VM_STATE_INL_H_
#define V8_EXECUTION_VM_STATE_INL_H_
#include "src/execution/isolate.h"
#include "src/execution/simulator.h"
#include "src/execution/vm-state.h"
#include "src/logging/log.h"
#include "src/tracing/trace-event.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 PARSER:
return "PARSER";
case BYTECODE_COMPILER:
return "BYTECODE_COMPILER";
case COMPILER:
return "COMPILER";
case OTHER:
return "OTHER";
case EXTERNAL:
return "EXTERNAL";
case ATOMICS_WAIT:
return "ATOMICS_WAIT";
case IDLE:
return "IDLE";
}
}
template <StateTag Tag>
VMState<Tag>::VMState(Isolate* isolate)
: isolate_(isolate), previous_tag_(isolate->current_vm_state()) {
isolate_->set_current_vm_state(Tag);
}
template <StateTag Tag>
VMState<Tag>::~VMState() {
isolate_->set_current_vm_state(previous_tag_);
}
ExternalCallbackScope::ExternalCallbackScope(Isolate* isolate, Address callback)
: isolate_(isolate),
callback_(callback),
previous_scope_(isolate->external_callback_scope()),
vm_state_(isolate),
pause_timed_histogram_scope_(isolate->counters()->execute_precise()) {
#ifdef USE_SIMULATOR
scope_address_ = Simulator::current(isolate)->get_sp();
#endif
isolate_->set_external_callback_scope(this);
TRACE_EVENT_BEGIN0(TRACE_DISABLED_BY_DEFAULT("v8.runtime"),
"V8.ExternalCallback");
}
ExternalCallbackScope::~ExternalCallbackScope() {
isolate_->set_external_callback_scope(previous_scope_);
TRACE_EVENT_END0(TRACE_DISABLED_BY_DEFAULT("v8.runtime"),
"V8.ExternalCallback");
}
Address ExternalCallbackScope::scope_address() {
#ifdef USE_SIMULATOR
return scope_address_;
#else
return reinterpret_cast<Address>(this);
#endif
}
} // namespace internal
} // namespace v8
#endif // V8_EXECUTION_VM_STATE_INL_H_
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