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Diff for /pegasus/src/Pegasus/Common/Threads.h between version 1.1.2.1 and 1.22

version 1.1.2.1, 2006/07/27 23:11:52

version 1.22, 2013/02/13 18:21:14

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//%2006////////////////////////////////////////////////////////////////////////

//%LICENSE////////////////////////////////////////////////////////////////

// Licensed to The Open Group (TOG) under one or more contributor license

// Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems.

// agreements. Refer to the OpenPegasusNOTICE.txt file distributed with

// this work for additional information regarding copyright ownership.

// IBM Corp.; EMC Corporation, The Open Group.

// Each contributor licenses this file to you under the OpenPegasus Open

// Source License; you may not use this file except in compliance with the

// IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group.

// License.

// EMC Corporation; VERITAS Software Corporation; The Open Group.

// Permission is hereby granted, free of charge, to any person obtaining a

// copy of this software and associated documentation files (the "Software"),

// EMC Corporation; Symantec Corporation; The Open Group.

// to deal in the Software without restriction, including without limitation

// the rights to use, copy, modify, merge, publish, distribute, sublicense,

// Permission is hereby granted, free of charge, to any person obtaining a copy

// and/or sell copies of the Software, and to permit persons to whom the

// of this software and associated documentation files (the "Software"), to

// Software is furnished to do so, subject to the following conditions:

// deal in the Software without restriction, including without limitation the

// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or

// The above copyright notice and this permission notice shall be included

// sell copies of the Software, and to permit persons to whom the Software is

// in all copies or substantial portions of the Software.

// furnished to do so, subject to the following conditions:

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

// THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN

// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

// ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED

// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.

// "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT

// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY

// LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR

// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,

// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE

// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN

// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION

// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

//==============================================================================

//////////////////////////////////////////////////////////////////////////

// Author: Mike Brasher (m.brasher@inovadevelopment.com)

//%/////////////////////////////////////////////////////////////////////////////

#ifndef Pegasus_Threads_h

#define Pegasus_Threads_h

#include <cstring>

#include <cstdio>

#include <cstring>

#include <Pegasus/Common/Config.h>

#include <Pegasus/Common/Linkage.h>

#if defined(PEGASUS_HAVE_PTHREADS)

// ATTN: can we consolidate these someplace?

# if defined(PEGASUS_PLATFORM_OS400_ISERIES_IBM)

# define _MULTI_THREADED // Is this really necessary?

#ifdef PEGASUS_OS_ZOS

# include <sched.h>

# endif

#if defined(PEGASUS_HAVE_PTHREADS)

# include <pthread.h>

# include <errno.h>

# include <sys/time.h>

#elif defined(PEGASUS_HAVE_WINDOWS_THREADS)

# include <windows.h>

# include <process.h>

#else

# error "<Pegasus/Common/Threads.h>: not implemented"

#endif

#if defined(PEGASUS_OS_SOLARIS)

# include <string.h>

# include <stdio.h>

#endif

PEGASUS_NAMESPACE_BEGIN

//==============================================================================

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//==============================================================================

#if defined(PEGASUS_PLATFORM_WIN32_IX86_MSVC)

#if defined(PEGASUS_OS_TYPE_WINDOWS)

# define PEGASUS_THREAD_CDECL __stdcall

#else

# define PEGASUS_THREAD_CDECL /* empty */

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//==============================================================================

// ThreadCleanupType

// ThreadId

//==============================================================================

struct ThreadCleanupBuffer

struct ThreadId

{

void (*__routine)(void*);

// The character representation of a uint64 requires 22 bytes including the

void* __arg;

// null terminator.

int __canceltype;

char buffer[22];

struct ThreadCleanupBuffer* __prev;

};

#if defined(PEGASUS_PLATFORM_AIX_RS_IBMCXX)

//==============================================================================

typedef void* ThreadCleanupType;

#elif defined(PEGASUS_PLATFORM_HPUX_ACC)

// ThreadType

typedef __pthread_cleanup_handler_t ThreadCleanupType;

#elif defined(PEGASUS_PLATFORM_OS400_ISERIES_IBM)

//==============================================================================

typedef ThreadCleanupBuffer ThreadCleanupType;

#elif defined(PEGASUS_PLATFORM_ZOS_ZSERIES_IBM)

#if defined(PEGASUS_HAVE_PTHREADS)

typedef ThreadCleanupBuffer ThreadCleanupType;

struct ThreadType

#elif defined(PEGASUS_PLATFORM_SOLARIS_SPARC_GNU)

{

typedef _cleanup_t ThreadCleanupType;

ThreadType()

#elif defined(PEGASUS_PLATFORM_TRU64_ALPHA_DECCXX)

{

typedef void* ThreadCleanupType;

memset(&thread, 0, sizeof(thread));

#elif defined(PEGASUS_DARWIN_PPC_GNU)

}

typedef void* ThreadCleanupType;

#elif defined(PEGASUS_OS_VMS)

ThreadType(pthread_t thread_) : thread(thread_)

typedef void* ThreadCleanupType;

{

#elif defined(PEGASUS_PLATFORM_WIN32_IX86_MSVC)

}

typedef void* ThreadCleanupType;

#elif defined(PEGASUS_PLATFORM_LINUX_GENERIC_GNU)

pthread_t thread;

typedef struct _pthread_cleanup_buffer ThreadCleanupType;

};

#else

#endif /* PEGASUS_HAVE_PTHREADS */

# error "<Pegasus/Common/Threads.h>: unsupported platform"

#endif

#if defined(PEGASUS_HAVE_WINDOWS_THREADS)

struct ThreadType

{

ThreadType() : handle(NULL)

{

}

HANDLE handle;

};

#endif /* PEGASUS_HAVE_WINDOWS_THREADS */

//==============================================================================

// Thread-related type definitions

// ThreadReturnType

//==============================================================================

#if defined(PEGASUS_HAVE_PTHREADS)

typedef pthread_t ThreadType;

typedef void* ThreadReturnType;

#endif

#if defined(PEGASUS_HAVE_WINDOWS_THREADS)

typedef HANDLE ThreadType;

typedef unsigned ThreadReturnType;

#endif

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struct ThreadHandle

{

ThreadType thid;

pthread_attr_t thatt;

};

#elif defined(PEGASUS_HAVE_WINDOWS_THREADS)

struct ThreadHandle

{

ThreadType thid;

void * thatt;

};

#endif

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{

public:

enum Type { DETACHED, JOINABLE };

static int create(

ThreadType& thread,

Type type,

void* (*start)(void*),

void* arg);

static ThreadType self();

static bool equal(ThreadType x, ThreadType y);

static void exit(ThreadReturnType rc);

static void cancel(ThreadType th, ThreadReturnType rc);

static void yield();

static void sleep(int msec);

static void cleanup_push(void (*func)(void*), void* arg);

static ThreadId id(const ThreadType& x = Threads::self());

static void cleanup_pop(int execute);

static bool null(const ThreadType& x = Threads::self());

static void clear(ThreadType& x);

};

//==============================================================================

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#if defined(PEGASUS_HAVE_PTHREADS)

inline ThreadType Threads::self()

{

return pthread_self();

}

inline bool Threads::equal(ThreadType x, ThreadType y)

{

return pthread_equal(x, y);

return pthread_equal(x.thread, y.thread);

}

inline void Threads::exit(ThreadReturnType rc)

{

// NOTE: pthread_exit exhibits unusual behavior on RHEL 3 U2, as

// documented in Bugzilla 3836. Where feasible, it may be advantageous

// to avoid using this function.

pthread_exit(rc);

}

inline void Threads::cancel(ThreadType th, ThreadReturnType rc)

inline void Threads::yield()

{

pthread_cancel(th);

#ifdef PEGASUS_OS_LINUX

pthread_yield();

#else

sched_yield();

#endif

}

inline void Threads::yield()

inline ThreadId Threads::id(const ThreadType& x)

{

#if defined(PEGASUS_PLATFORM_AIX_RS_IBMCXX) || \

ThreadId tid = { { 0 } };

defined(PEGASUS_PLATFORM_HPUX_ACC) || \

defined(PEGASUS_PLATFORM_OS400_ISERIES_IBM) || \

#if defined(PEGASUS_OS_ZOS)

defined(PEGASUS_PLATFORM_TRU64_ALPHA_DECCXX) || \

const char* s = x.thread.__;

defined(PEGASUS_OS_VMS)

sprintf(tid.buffer, "%X%X%X%X%X%X%X%X",

sched_yield();

s[0], s[1], s[2], s[3], s[4], s[5], s[6], s[7]);

#else

pthread_yield();

sprintf(tid.buffer, "%" PEGASUS_64BIT_CONVERSION_WIDTH "u",

Uint64(x.thread));

#endif

return tid;

}

inline void Threads::cleanup_push(void (*func)(void*), void* arg)

inline bool Threads::null(const ThreadType& x)

{

// ATTN: it is doubtful whether cleanup handlers ever really worked.

#if defined(PEGASUS_OS_ZOS)

// They are only used in two places and not used in many other

Uint64 tmp;

// places where mutexes are obtained. Further, they are only

memcpy(&tmp, x.thread.__, sizeof(Uint64));

// implemented correctly on one or two platforms. For now, we

return tmp == 0;

// will defer their implementation until we can find a way to

#else

// implement them on all platforms (using thread local storage).

return x.thread == 0;

#endif

}

inline void Threads::cleanup_pop(int execute)

inline void Threads::clear(ThreadType& x)

{

// ATTN: not implemented.

memset(&x, 0, sizeof(x));

}

#endif /* defined(PEGASUS_HAVE_PTHREADS) */

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inline ThreadType Threads::self()

{

return ThreadType(GetCurrentThreadId());

ThreadType tt;

tt.handle = GetCurrentThread();

return tt;

}

inline bool Threads::equal(ThreadType x, ThreadType y)

{

return x == y;

return x.handle == y.handle;

}

inline void Threads::exit(ThreadReturnType rc)

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_endthreadex(rc);

}

inline void Threads::cancel(ThreadType th, ThreadReturnType rc)

inline void Threads::yield()

{

TerminateThread(th, rc);

Sleep(0);

}

inline void Threads::yield()

inline ThreadId Threads::id(const ThreadType& x)

{

Sleep(0);

ThreadId tmp;

sprintf(tmp.buffer, "%" PEGASUS_64BIT_CONVERSION_WIDTH "u",

Uint64(x.handle));

return tmp;

}

inline void Threads::cleanup_push(void (*func)(void*), void* arg)

inline bool Threads::null(const ThreadType& x)

{

// ATTN: Not implemented on Windows.

return x.handle == NULL;

}

inline void Threads::cleanup_pop(int execute)

inline void Threads::clear(ThreadType& x)

{

// ATTN: Not implemented on Windows.

x.handle = NULL;

}

#endif /* defined(PEGASUS_HAVE_WINDOWS_THREADS) */

PEGASUS_NAMESPACE_END

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