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Commit	Line	Data
	1	/*
	2	* Copyright (C) 2012 Apple Inc. All rights reserved.
	3	*
	4	* Redistribution and use in source and binary forms, with or without
	5	* modification, are permitted provided that the following conditions
	6	* are met:
	7	* 1. Redistributions of source code must retain the above copyright
	8	* notice, this list of conditions and the following disclaimer.
	9	* 2. Redistributions in binary form must reproduce the above copyright
	10	* notice, this list of conditions and the following disclaimer in the
	11	* documentation and/or other materials provided with the distribution.
	12	*
	13	* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
	14	* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	15	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	16	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
	17	* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
	18	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
	19	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
	20	* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
	21	* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	23	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	24	*/
	25
	26	#ifndef CodeProfiling_h
	27	#define CodeProfiling_h
	28
	29	namespace WTF {
	30
	31	class MetaAllocator;
	32	class MetaAllocatorTracker;
	33
	34	}
	35
	36	namespace JSC {
	37
	38	class CodeProfile;
	39	class SourceCode;
	40
	41	class CodeProfiling {
	42	enum Mode {
	43	Disabled,
	44	Enabled,
	45	Verbose,
	46	VeryVerbose
	47	};
	48
	49	public:
	50	CodeProfiling(const SourceCode& source)
	51	: m_active(enabled())
	52	{
	53	if (m_active)
	54	begin(source);
	55	}
	56
	57	~CodeProfiling()
	58	{
	59	if (m_active)
	60	end();
	61	}
	62
	63	static bool enabled() { return s_mode != Disabled; }
	64	static bool beVerbose() { return s_mode >= Verbose; }
	65	static bool beVeryVerbose() { return s_mode >= VeryVerbose; }
	66
	67	static void notifyAllocator(WTF::MetaAllocator*);
	68	static void* getOwnerUIDForPC(void*);
	69	static void sample(void* pc, void** framePointer);
	70
	71	private:
	72	void begin(const SourceCode&);
	73	void end();
	74
	75	bool m_active;
	76
	77	static Mode s_mode;
	78	static WTF::MetaAllocatorTracker* s_tracker;
	79	static volatile CodeProfile* s_profileStack;
	80	};
	81
	82	}
	83
	84	#endif // CodeProfiling_h
	85