142 lines
5.8 KiB
C++
142 lines
5.8 KiB
C++
/*
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Copyright (C) 2001 Paul Davis
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Copyright (C) 2004-2008 Grame
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/*
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Copyright: Copyright 2002 Apple Computer, Inc. All rights reserved.
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Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc.
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("Apple") in consideration of your agreement to the following terms, and your
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use, installation, modification or redistribution of this Apple software
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constitutes acceptance of these terms. If you do not agree with these terms,
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please do not use, install, modify or redistribute this Apple software.
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In consideration of your agreement to abide by the following terms, and subject
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to these terms, Apple grants you a personal, non-exclusive license, under Apple
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copyrights in this original Apple software (the "Apple Software"), to use,
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reproduce, modify and redistribute the Apple Software, with or without
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modifications, in source and/or binary forms; provided that if you redistribute
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the Apple Software in its entirety and without modifications, you must retain
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this notice and the following text and disclaimers in all such redistributions of
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the Apple Software. Neither the name, trademarks, service marks or logos of
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Apple Computer, Inc. may be used to endorse or promote products derived from the
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Apple Software without specific prior written permission from Apple. Except as
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expressly stated in this notice, no other rights or licenses, express or implied,
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are granted by Apple herein, including but not limited to any patent rights that
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may be infringed by your derivative works or by other works in which the Apple
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Software may be incorporated.
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The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO
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WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
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WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
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COMBINATION WITH YOUR PRODUCTS.
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IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION
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OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT, TORT
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(INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN
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ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __JackMachThread__
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#define __JackMachThread__
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#include <TargetConditionals.h>
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#ifdef MY_TARGET_OS_IPHONE
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typedef unsigned char Boolean;
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#endif
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#include "JackPosixThread.h"
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#ifndef MY_TARGET_OS_IPHONE
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#include <MacTypes.h>
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#endif
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#include <mach/thread_policy.h>
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#include <mach/thread_act.h>
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#ifndef MY_TARGET_OS_IPHONE
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#include <CoreAudio/HostTime.h>
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#endif
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#define THREAD_SET_PRIORITY 0
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#define THREAD_SCHEDULED_PRIORITY 1
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namespace Jack
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{
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/*!
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\brief Darwin threads. Real-time threads are actually "time constraint" threads.
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*/
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class SERVER_EXPORT JackMachThread : public JackPosixThread
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{
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private:
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UInt64 fPeriod;
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UInt64 fComputation;
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UInt64 fConstraint;
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static UInt32 GetThreadSetPriority(jack_native_thread_t thread);
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static UInt32 GetThreadScheduledPriority(jack_native_thread_t thread);
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static UInt32 GetThreadPriority(jack_native_thread_t thread, int inWhichPriority);
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public:
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JackMachThread(JackRunnableInterface* runnable, UInt64 period, UInt64 computation, UInt64 constraint)
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: JackPosixThread(runnable), fPeriod(period), fComputation(computation), fConstraint(constraint)
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{}
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JackMachThread(JackRunnableInterface* runnable, int cancellation = PTHREAD_CANCEL_ASYNCHRONOUS)
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: JackPosixThread(runnable, cancellation), fPeriod(0), fComputation(0), fConstraint(0)
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{}
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int Kill();
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int AcquireRealTime(); // Used when called from another thread
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int AcquireSelfRealTime(); // Used when called from thread itself
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int AcquireRealTime(int priority); // Used when called from another thread
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int AcquireSelfRealTime(int priority); // Used when called from thread itself
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int DropRealTime(); // Used when called from another thread
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int DropSelfRealTime(); // Used when called from thread itself
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void SetParams(UInt64 period, UInt64 computation, UInt64 constraint);
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static int GetParams(jack_native_thread_t thread, UInt64* period, UInt64* computation, UInt64* constraint);
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static int SetThreadToPriority(jack_native_thread_t thread, UInt32 inPriority, Boolean inIsFixed, UInt64 period, UInt64 computation, UInt64 constraint);
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static int AcquireRealTimeImp(jack_native_thread_t thread, UInt64 period, UInt64 computation, UInt64 constraint);
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static int AcquireRealTimeImp(jack_native_thread_t thread, int priority, UInt64 period, UInt64 computation, UInt64 constraint)
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{
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return JackMachThread::AcquireRealTimeImp(thread, period, computation, constraint);
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}
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static int DropRealTimeImp(jack_native_thread_t thread);
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};
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} // end of namespace
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#endif
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