ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 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" |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 32 | #include "runtime-profiler.h" |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 33 | |
| 34 | namespace v8 { |
| 35 | namespace internal { |
| 36 | |
| 37 | // |
| 38 | // VMState class implementation. A simple stack of VM states held by the |
| 39 | // logger and partially threaded through the call stack. States are pushed by |
| 40 | // VMState construction and popped by destruction. |
| 41 | // |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 42 | inline const char* StateToString(StateTag state) { |
| 43 | switch (state) { |
| 44 | case JS: |
| 45 | return "JS"; |
| 46 | case GC: |
| 47 | return "GC"; |
| 48 | case COMPILER: |
| 49 | return "COMPILER"; |
| 50 | case OTHER: |
| 51 | return "OTHER"; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 52 | case EXTERNAL: |
| 53 | return "EXTERNAL"; |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 54 | default: |
| 55 | UNREACHABLE(); |
| 56 | return NULL; |
| 57 | } |
| 58 | } |
| 59 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 60 | |
| 61 | VMState::VMState(Isolate* isolate, StateTag tag) |
| 62 | : isolate_(isolate), previous_tag_(isolate->current_vm_state()) { |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 63 | if (FLAG_log_state_changes) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 64 | LOG(isolate, UncheckedStringEvent("Entering", StateToString(tag))); |
| 65 | LOG(isolate, UncheckedStringEvent("From", StateToString(previous_tag_))); |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 66 | } |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 67 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 68 | isolate_->SetCurrentVMState(tag); |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 69 | } |
| 70 | |
| 71 | |
| 72 | VMState::~VMState() { |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 73 | if (FLAG_log_state_changes) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 74 | LOG(isolate_, |
| 75 | UncheckedStringEvent("Leaving", |
| 76 | StateToString(isolate_->current_vm_state()))); |
| 77 | LOG(isolate_, |
| 78 | UncheckedStringEvent("To", StateToString(previous_tag_))); |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 79 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 80 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 81 | isolate_->SetCurrentVMState(previous_tag_); |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 82 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 83 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 84 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 85 | ExternalCallbackScope::ExternalCallbackScope(Isolate* isolate, Address callback) |
| 86 | : isolate_(isolate), previous_callback_(isolate->external_callback()) { |
| 87 | isolate_->set_external_callback(callback); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 88 | } |
| 89 | |
| 90 | ExternalCallbackScope::~ExternalCallbackScope() { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 91 | isolate_->set_external_callback(previous_callback_); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 92 | } |
| 93 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 94 | |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 95 | } } // namespace v8::internal |
| 96 | |
| 97 | #endif // V8_VM_STATE_INL_H_ |