| /* |
| * Copyright (C) 2012 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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. |
| */ |
| |
| #pragma once |
| |
| namespace WTF { |
| |
| class MetaAllocator; |
| class MetaAllocatorTracker; |
| |
| } |
| |
| namespace JSC { |
| |
| class CodeProfile; |
| class SourceCode; |
| |
| class CodeProfiling { |
| enum Mode { |
| Disabled, |
| Enabled, |
| Verbose, |
| VeryVerbose |
| }; |
| |
| public: |
| CodeProfiling(const SourceCode& source) |
| : m_active(enabled()) |
| { |
| if (m_active) |
| begin(source); |
| } |
| |
| ~CodeProfiling() |
| { |
| if (m_active) |
| end(); |
| } |
| |
| static bool enabled() { return s_mode != Disabled; } |
| static bool beVerbose() { return s_mode >= Verbose; } |
| static bool beVeryVerbose() { return s_mode >= VeryVerbose; } |
| |
| static void notifyAllocator(WTF::MetaAllocator*); |
| static void* getOwnerUIDForPC(void*); |
| static void sample(void* pc, void** framePointer); |
| |
| private: |
| void begin(const SourceCode&); |
| void end(); |
| |
| bool m_active; |
| |
| static Mode s_mode; |
| static WTF::MetaAllocatorTracker* s_tracker; |
| static volatile CodeProfile* s_profileStack; |
| }; |
| |
| } // namespace JSC |