Cider Isn't Darwin Emulation, Really
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Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc. ("Apple") in consideration of your agreement to the following terms, and your use, installation, modification or redistribution of this Apple software constitutes acceptance of these terms. If you do not agree with these terms, please do not use, install, modify or redistribute this Apple software.
In consideration of your agreement to abide by the following terms, and subject to these terms, Apple grants you a personal, non-exclusive license, under Apple�s copyrights in this original Apple software (the "Apple Software"), to use, reproduce, modify and redistribute the Apple Software, with or without modifications, in source and/or binary forms; provided that if you redistribute the Apple Software in its entirety and without modifications, you must retain this notice and the following text and disclaimers in all such redistributions of the Apple Software. Neither the name, trademarks, service marks or logos of Apple Computer, Inc. may be used to endorse or promote products derived from the Apple Software without specific prior written permission from Apple. Except as expressly stated in this notice, no other rights or licenses, express or implied, are granted by Apple herein, including but not limited to any patent rights that may be infringed by your derivative works or by other works in which the Apple Software may be incorporated.
The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.*//*================================================================================================== CAPThread.h
==================================================================================================*/#if !defined(__CAPThread_h__)#define __CAPThread_h__
//==================================================================================================// Includes//==================================================================================================
// System Includes#if !defined(__COREAUDIO_USE_FLAT_INCLUDES__) #include <CoreAudio/CoreAudioTypes.h>#else #include <CoreAudioTypes.h>#endif
#if TARGET_OS_MAC #include <pthread.h> #include <unistd.h>#elif TARGET_OS_WIN32 #include <windows.h>#else #error Unsupported operating system#endif
//==================================================================================================// CAPThread//// This class wraps a pthread and a Win32 thread.// caution: long-running fixed priority threads can make the system unresponsive//==================================================================================================
class CAPThread{
// Typespublic: typedef void* (*ThreadRoutine)(void* inParameter);
// Constantspublic: enum {#if TARGET_OS_MAC kMinThreadPriority = 1, kMaxThreadPriority = 63, kDefaultThreadPriority = 31#elif TARGET_OS_WIN32 kMinThreadPriority = 1, kMaxThreadPriority = 31, kDefaultThreadPriority = THREAD_PRIORITY_NORMAL#endif };
// Construction/Destructionpublic: CAPThread(ThreadRoutine inThreadRoutine, void* inParameter, UInt32 inPriority = kDefaultThreadPriority, bool inFixedPriority=false); CAPThread(ThreadRoutine inThreadRoutine, void* inParameter, UInt32 inPeriod, UInt32 inComputation, UInt32 inConstraint, bool inIsPreemptible); virtual ~CAPThread();
// Propertiespublic:#if TARGET_OS_MAC pthread_t GetPThread() const { return mPThread; } bool IsCurrentThread() const { return (0 != mPThread) && (pthread_self() == mPThread); } bool IsRunning() const { return 0 != mPThread; }#elif TARGET_OS_WIN32 HANDLE GetThreadHandle() const { return mThreadHandle; } UInt32 GetThreadID() const { return mThreadID; } bool IsCurrentThread() const { return (0 != mThreadID) && (GetCurrentThreadId() == mThreadID); } bool IsRunning() const { return 0 != mThreadID; }#endif
bool IsTimeShareThread() const { return !mTimeConstraintSet; } bool IsTimeConstraintThread() const { return mTimeConstraintSet; }
UInt32 GetPriority() const { return mPriority; } UInt32 GetScheduledPriority(); void SetPriority(UInt32 inPriority, bool inFixedPriority=false);
void GetTimeConstraints(UInt32& outPeriod, UInt32& outComputation, UInt32& outConstraint, bool& outIsPreemptible) const { outPeriod = mPeriod; outComputation = mComputation; outConstraint = mConstraint; outIsPreemptible = mIsPreemptible; } void SetTimeConstraints(UInt32 inPeriod, UInt32 inComputation, UInt32 inConstraint, bool inIsPreemptible); void ClearTimeConstraints() { SetPriority(mPriority); } // Actionspublic: virtual void Start();
// Implementationprotected:#if TARGET_OS_MAC static void* Entry(CAPThread* inCAPThread); static UInt32 getScheduledPriority(pthread_t inThread, int inPriorityKind);#elif TARGET_OS_WIN32 static UInt32 WINAPI Entry(CAPThread* inCAPThread);#endif
#if TARGET_OS_MAC pthread_t mPThread; UInt32 mSpawningThreadPriority;#elif TARGET_OS_WIN32 HANDLE mThreadHandle; UInt32 mThreadID;#endif ThreadRoutine mThreadRoutine; void* mThreadParameter; SInt32 mPriority; UInt32 mPeriod; UInt32 mComputation; UInt32 mConstraint; bool mIsPreemptible; bool mTimeConstraintSet; bool mFixedPriority;};
#endif