Jack2  1.9.9
JackMachThread.h
1 /*
2 Copyright (C) 2001 Paul Davis
3 Copyright (C) 2004-2008 Grame
4 
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1 of the License, or
8 (at your option) any later version.
9 
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU Lesser General Public License for more details.
14 
15 You should have received a copy of the GNU Lesser General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18 
19 */
20 
21 /*
22  Copyright: Copyright 2002 Apple Computer, Inc. All rights reserved.
23 
24  Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc.
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28  please do not use, install, modify or redistribute this Apple software.
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39  Apple Software without specific prior written permission from Apple. Except as
40  expressly stated in this notice, no other rights or licenses, express or implied,
41  are granted by Apple herein, including but not limited to any patent rights that
42  may be infringed by your derivative works or by other works in which the Apple
43  Software may be incorporated.
44 
45  The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO
46  WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
47  WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
48  PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
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51  IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
52  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
53  GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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57  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
58 */
59 
60 
61 #ifndef __JackMachThread__
62 #define __JackMachThread__
63 
64 #include <TargetConditionals.h>
65 
66 #ifdef MY_TARGET_OS_IPHONE
67 typedef unsigned char Boolean;
68 #endif
69 
70 
71 #include "JackPosixThread.h"
72 #ifndef MY_TARGET_OS_IPHONE
73 #include <CoreServices/../Frameworks/CarbonCore.framework/Headers/MacTypes.h>
74 #endif
75 
76 #include <mach/thread_policy.h>
77 #include <mach/thread_act.h>
78 #ifndef MY_TARGET_OS_IPHONE
79 #include <CoreAudio/HostTime.h>
80 #endif
81 
82 #define THREAD_SET_PRIORITY 0
83 #define THREAD_SCHEDULED_PRIORITY 1
84 
85 namespace Jack
86 {
87 
92 class SERVER_EXPORT JackMachThread : public JackPosixThread
93 {
94 
95  private:
96 
97  UInt64 fPeriod;
98  UInt64 fComputation;
99  UInt64 fConstraint;
100 
101  static UInt32 GetThreadSetPriority(jack_native_thread_t thread);
102  static UInt32 GetThreadScheduledPriority(jack_native_thread_t thread);
103  static UInt32 GetThreadPriority(jack_native_thread_t thread, int inWhichPriority);
104 
105  public:
106 
107  JackMachThread(JackRunnableInterface* runnable, UInt64 period, UInt64 computation, UInt64 constraint)
108  : JackPosixThread(runnable), fPeriod(period), fComputation(computation), fConstraint(constraint)
109  {}
110 
111  JackMachThread(JackRunnableInterface* runnable, int cancellation = PTHREAD_CANCEL_ASYNCHRONOUS)
112  : JackPosixThread(runnable, cancellation), fPeriod(0), fComputation(0), fConstraint(0)
113  {}
114 
115  int Kill();
116 
117  int AcquireRealTime(); // Used when called from another thread
118  int AcquireSelfRealTime(); // Used when called from thread itself
119 
120  int AcquireRealTime(int priority); // Used when called from another thread
121  int AcquireSelfRealTime(int priority); // Used when called from thread itself
122 
123  int DropRealTime(); // Used when called from another thread
124  int DropSelfRealTime(); // Used when called from thread itself
125 
126  void SetParams(UInt64 period, UInt64 computation, UInt64 constraint);
127  static int GetParams(jack_native_thread_t thread, UInt64* period, UInt64* computation, UInt64* constraint);
128  static int SetThreadToPriority(jack_native_thread_t thread, UInt32 inPriority, Boolean inIsFixed, UInt64 period, UInt64 computation, UInt64 constraint);
129 
130  static int AcquireRealTimeImp(jack_native_thread_t thread, UInt64 period, UInt64 computation, UInt64 constraint);
131  static int AcquireRealTimeImp(jack_native_thread_t thread, int priority, UInt64 period, UInt64 computation, UInt64 constraint)
132  {
133  return JackMachThread::AcquireRealTimeImp(thread, period, computation, constraint);
134  }
135  static int DropRealTimeImp(jack_native_thread_t thread);
136 
137 };
138 
139 } // end of namespace
140 
141 #endif
The POSIX thread base class.
The base class for runnable objects, that have an Init and Execute method to be called in a threa...
Definition: JackThread.h:34
Darwin threads. Real-time threads are actually &quot;time constraint&quot; threads.