| // 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 PARALLEL_COMPILER: |
| return "PARALLEL_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_ |