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	1	/*
	2	* Copyright (C) 2012, 2013 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 ProfilerDatabase_h
	27	#define ProfilerDatabase_h
	28
	29	#include "JSCJSValue.h"
	30	#include "ProfilerBytecodes.h"
	31	#include "ProfilerCompilation.h"
	32	#include "ProfilerCompilationKind.h"
	33	#include <wtf/FastAllocBase.h>
	34	#include <wtf/HashMap.h>
	35	#include <wtf/Noncopyable.h>
	36	#include <wtf/PassRefPtr.h>
	37	#include <wtf/SegmentedVector.h>
	38	#include <wtf/text/WTFString.h>
	39
	40	namespace JSC { namespace Profiler {
	41
	42	class Database {
	43	WTF_MAKE_FAST_ALLOCATED; WTF_MAKE_NONCOPYABLE(Database);
	44	public:
	45	JS_EXPORT_PRIVATE Database(VM&);
	46	JS_EXPORT_PRIVATE ~Database();
	47
	48	int databaseID() const { return m_databaseID; }
	49
	50	Bytecodes* ensureBytecodesFor(CodeBlock*);
	51	void notifyDestruction(CodeBlock*);
	52
	53	PassRefPtr<Compilation> newCompilation(CodeBlock*, CompilationKind);
	54	PassRefPtr<Compilation> newCompilation(Bytecodes*, CompilationKind);
	55
	56	// Converts the database to a JavaScript object that is suitable for JSON stringification.
	57	// Note that it's probably a good idea to use an ExecState* associated with a global
	58	// object that is "clean" - i.e. array and object prototypes haven't had strange things
	59	// done to them. And yes, it should be appropriate to just use a globalExec here.
	60	JS_EXPORT_PRIVATE JSValue toJS(ExecState*) const;
	61
	62	// Converts the database to a JavaScript object using a private temporary global object,
	63	// and then returns the JSON representation of that object.
	64	JS_EXPORT_PRIVATE String toJSON() const;
	65
	66	// Saves the JSON representation (from toJSON()) to the given file. Returns false if the
	67	// save failed.
	68	JS_EXPORT_PRIVATE bool save(const char* filename) const;
	69
	70	void registerToSaveAtExit(const char* filename);
	71
	72	private:
	73
	74	void addDatabaseToAtExit();
	75	void removeDatabaseFromAtExit();
	76	void performAtExitSave() const;
	77	static Database* removeFirstAtExitDatabase();
	78	static void atExitCallback();
	79
	80	int m_databaseID;
	81	VM& m_vm;
	82	SegmentedVector<Bytecodes> m_bytecodes;
	83	HashMap<CodeBlock, Bytecodes> m_bytecodesMap;
	84	Vector<RefPtr<Compilation> > m_compilations;
	85	bool m_shouldSaveAtExit;
	86	CString m_atExitSaveFilename;
	87	Database* m_nextRegisteredDatabase;
	88	};
	89
	90	} } // namespace JSC::Profiler
	91
	92	#endif // ProfilerDatabase_h
	93