1// Copyright 2010 the V8 project authors. All rights reserved. 2// Redistribution and use in source and binary forms, with or without 3// modification, are permitted provided that the following conditions are 4// met: 5// 6// * Redistributions of source code must retain the above copyright 7// notice, this list of conditions and the following disclaimer. 8// * Redistributions in binary form must reproduce the above 9// copyright notice, this list of conditions and the following 10// disclaimer in the documentation and/or other materials provided 11// with the distribution. 12// * Neither the name of Google Inc. nor the names of its 13// contributors may be used to endorse or promote products derived 14// from this software without specific prior written permission. 15// 16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28#ifndef V8_VM_STATE_INL_H_ 29#define V8_VM_STATE_INL_H_ 30 31#include "vm-state.h" 32#include "log.h" 33#include "simulator.h" 34 35namespace v8 { 36namespace internal { 37 38// 39// VMState class implementation. A simple stack of VM states held by the 40// logger and partially threaded through the call stack. States are pushed by 41// VMState construction and popped by destruction. 42// 43inline const char* StateToString(StateTag state) { 44 switch (state) { 45 case JS: 46 return "JS"; 47 case GC: 48 return "GC"; 49 case COMPILER: 50 return "COMPILER"; 51 case OTHER: 52 return "OTHER"; 53 case EXTERNAL: 54 return "EXTERNAL"; 55 default: 56 UNREACHABLE(); 57 return NULL; 58 } 59} 60 61 62template <StateTag Tag> 63VMState<Tag>::VMState(Isolate* isolate) 64 : isolate_(isolate), previous_tag_(isolate->current_vm_state()) { 65 if (FLAG_log_timer_events && previous_tag_ != EXTERNAL && Tag == EXTERNAL) { 66 LOG(isolate_, 67 TimerEvent(Logger::START, Logger::TimerEventScope::v8_external)); 68 } 69 isolate_->set_current_vm_state(Tag); 70} 71 72 73template <StateTag Tag> 74VMState<Tag>::~VMState() { 75 if (FLAG_log_timer_events && previous_tag_ != EXTERNAL && Tag == EXTERNAL) { 76 LOG(isolate_, 77 TimerEvent(Logger::END, Logger::TimerEventScope::v8_external)); 78 } 79 isolate_->set_current_vm_state(previous_tag_); 80} 81 82 83ExternalCallbackScope::ExternalCallbackScope(Isolate* isolate, Address callback) 84 : isolate_(isolate), 85 callback_(callback), 86 previous_scope_(isolate->external_callback_scope()) { 87#ifdef USE_SIMULATOR 88 int32_t sp = Simulator::current(isolate)->get_register(Simulator::sp); 89 scope_address_ = reinterpret_cast<Address>(static_cast<intptr_t>(sp)); 90#endif 91 isolate_->set_external_callback_scope(this); 92} 93 94ExternalCallbackScope::~ExternalCallbackScope() { 95 isolate_->set_external_callback_scope(previous_scope_); 96} 97 98Address ExternalCallbackScope::scope_address() { 99#ifdef USE_SIMULATOR 100 return scope_address_; 101#else 102 return reinterpret_cast<Address>(this); 103#endif 104} 105 106 107} } // namespace v8::internal 108 109#endif // V8_VM_STATE_INL_H_ 110