DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Mercurial (fbecf6c8a86f)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90
/* -*- Mode: C++; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is [Open Source Virtual Machine.].
 *
 * The Initial Developer of the Original Code is
 * Adobe System Incorporated.
 * Portions created by the Initial Developer are Copyright (C) 2004-2006
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Adobe AS3 Team
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#ifndef __GCSpinLock__
#define __GCSpinLock__

namespace MMgc
{

	/**
	 * GCAcquireSpinlock is a convenience class which acquires
	 * the specified spinlock at construct time, then releases
	 * the spinlock at desruct time.  The single statement
	 *
	 *    GCAcquireSpinlock acquire(spinlock);
	 *
	 * ... will acquire the spinlock at the top of the function
	 * and release it at the end.  This makes for less error-prone
	 * code than explicit acquire/release.
	 */
	class GCAcquireSpinlock
	{
	public:
		REALLY_INLINE explicit GCAcquireSpinlock(vmpi_spin_lock_t *spinlock) : 
			m_spinlock(spinlock)
		{
		#ifdef _DEBUG
			bool r =
		#endif
			VMPI_lockAcquire(m_spinlock);

			GCAssert(r);
		}
		
		REALLY_INLINE ~GCAcquireSpinlock()
		{
		#ifdef _DEBUG
			bool r =
		#endif
			VMPI_lockRelease(m_spinlock);

			GCAssert(r);
		}

	private:
		vmpi_spin_lock_t *m_spinlock;

	private: // not implemented
		GCAcquireSpinlock();
		GCAcquireSpinlock(const GCAcquireSpinlock&);
		GCAcquireSpinlock& operator=(const GCAcquireSpinlock&);
	};
}

#endif /* __GCSpinLock__ */