CheckVMThreadStacks.hpp

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 * Copyright (c) 1991, 2014 IBM Corp. and others
 *
 * This program and the accompanying materials are made available under
 * the terms of the Eclipse Public License 2.0 which accompanies this
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 * is available at https://www.apache.org/licenses/LICENSE-2.0.
 *
 * This Source Code may also be made available under the following
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 * forth in the Eclipse Public License, v. 2.0 are satisfied: GNU
 * General Public License, version 2 with the GNU Classpath
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 * OpenJDK Assembly Exception [2].
 *
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/**
 * @file
 * @ingroup GC_Check
 */

#if !defined(CHECKVMTHREADSTACKS_HPP_)
#define CHECKVMTHREADSTACKS_HPP_

#include "j9.h"
#include "j9cfg.h"

#include "Check.hpp"

class GC_ScanFormatter;

/**
 * 
 */
class GC_CheckVMThreadStacks : public GC_Check
{
private:
	virtual void check(); /**< run the check */
	virtual void print(); /**< dump the check structure to tty */

	/**
	 * Structure to be passed as user data to the stack walker.
	 */
	struct checkStackIteratorData {
		GC_CheckEngine *gcCheck;
		J9VMThread *walkThread;
		UDATA numberOfErrors;
	};
	struct printStackIteratorData {
		GC_ScanFormatter *scanFormatter;
		J9VMThread *walkThread;
	};
	friend void checkStackSlotIterator(J9JavaVM *javaVM, J9Object **objectIndirect, void *localData, J9StackWalkState *walkState, const void *stackLocation);
	friend void printStackSlotIterator(J9JavaVM *javaVM, J9Object **objectIndirect, void *localData, J9StackWalkState *walkState, const void *stackLocation);
	
public:
	static GC_Check *newInstance(J9JavaVM *javaVM, GC_CheckEngine *engine);
	virtual void kill();

	virtual const char *getCheckName() { return "THREAD STACKS"; };

	GC_CheckVMThreadStacks(J9JavaVM *javaVM, GC_CheckEngine *engine) :
		GC_Check(javaVM, engine)
	{}
};

#endif /* CHECKVMTHREADSTACKS_HPP_ */