PthreadDefs.h

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//=============================================================================
//  Definitions used throughout the Pthread class library
//-----------------------------------------------------------------------------
//  POSIX Pthread class library
//  Copyright (C) 1997-1999  The University of Texas
//
//  This library is free software; you can redistribute it and/or modify it
//  under the terms of the GNU Library General Public License as published
//  by the Free Software Foundation; either version 2 of the License, or
//  (at your option) any later version.
//
//  This library is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
//  Library General Public License for more details.
//
//  The GNU Public License is available in the file LICENSE, or you
//  can write to the Free Software Foundation, Inc., 59 Temple Place -
//  Suite 330, Boston, MA 02111-1307, USA, or you can find it on the
//  World Wide Web at http://www.fsf.org.
//=============================================================================


#ifndef PthreadDefs_h
#define PthreadDefs_h
#pragma once
#include <cpn/common.h>

#ifdef MERCURY
    // Mercury's pthread support is unmaintained and broken in several ways...
    #include <mcos.h>
    #include <unistd.h>
    #include <pthread.h>
    #define POSIX_PRIO_NONE         NO_PRIO_INHERIT
    #define POSIX_PRIO_INHERIT      PRIO_INHERIT
    #define POSIX_PRIO_PROTECT      PRIO_PROTECT
    #define PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED

#elif defined(OS_HPUX_1100) || defined(OS_HPUX_1111)
    // HP's pthread support isn't standard...need to define _POSIX_THREADS
    #define _POSIX_THREADS 1
    #include <unistd.h>
    #include <pthread.h>

#elif defined(OS_HPUX_1020)
    // HP's pthread support is non-existent.
        // (may be able to use GNU pth library instead)
    #include <sched.h>
#else

    #include <unistd.h>
    #ifdef _POSIX_THREADS

        #include <pthread.h>

        #if defined(_POSIX_THREAD_PRIO_INHERIT) && (_POSIX_THREAD_PRIO_INHERIT < 0)
                    #undef _POSIX_THREAD_PRIO_INHERIT
                #endif

        #if defined(_POSIX_THREAD_PRIO_PROTECT) && (_POSIX_THREAD_PRIO_PROTECT < 0)
                    #undef _POSIX_THREAD_PRIO_PROTECT
                #endif
               
        #if !defined POSIX_PRIO_NONE
            #define POSIX_PRIO_NONE     PTHREAD_PRIO_NONE
            #define POSIX_PRIO_INHERIT  PTHREAD_PRIO_INHERIT
            #define POSIX_PRIO_PROTECT  PTHREAD_PRIO_PROTECT
        #endif


        // AIX has some bad ones, too
        #if defined(OS_AIX)
            #define PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED
            inline int pthread_sigmask(int operation, const sigset_t *set, 
                sigset_t *old_set)
                { return sigthreadmask(operation, set, old_set); }
            inline int sched_yield (void)
                { pthread_yield(); return 0; }
        #endif

        // Darwin (MacOS X) had problems prior to gcc-3.3
        #if defined(__APPLE__) && !( ((__GNUC__==3) && (__GNUC_MINOR__>=3)) || (__GNUC__>3) )
            inline int pthread_kill(pthread_t thread, int sig)
                { return -1; }
            inline int pthread_sigmask(int operation, const sigset_t *set, sigset_t *old_set)
                { return -1; }
            #define POSIX_PRIO_NONE     PTHREAD_PRIO_NONE
            #define POSIX_PRIO_INHERIT  PTHREAD_PRIO_INHERIT
            #define POSIX_PRIO_PROTECT  PTHREAD_PRIO_PROTECT
            #undef pthread_cleanup_push
            #undef pthread_cleanup_pop
            #define pthread_cleanup_push(routine, args)
            #define pthread_cleanup_pop(execute)
            inline int pthread_condattr_init(pthread_condattr_t *attr)
                { return -1; }
            inline int pthread_condattr_destroy(pthread_condattr_t *attr)
                { return -1; }
        #endif

    #endif
#endif

#endif