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/*
* 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.
*/
#ifndef CodeProfiling_h
#define CodeProfiling_h
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;
};
}
#endif // CodeProfiling_h