thread.h | searchcode

/EQEmuServer/perl_x64/CORE/thread.h

http://projecteqemu.googlecode.com/
C++ Header | 448 lines | 353 code | 64 blank | 31 comment | 32 complexity | 14385ed14f3a0e0f30ccef71e46aba93 MD5 | raw file
Possible License(s): GPL-2.0

/*    thread.h

 *

 *    Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,

 *    by Larry Wall and others

 *

 *    You may distribute under the terms of either the GNU General Public

 *    License or the Artistic License, as specified in the README file.

 *

 */



#if defined(USE_ITHREADS)



#if defined(VMS)

#include <builtins.h>

#endif



#ifdef WIN32

#  include <win32thread.h>

#else

#ifdef NETWARE

#  include <nw5thread.h>

#else

#  ifdef OLD_PTHREADS_API /* Here be dragons. */

#    define DETACH(t) \

    STMT_START {						\

	int _eC_;						\

	if ((_eC_ = pthread_detach(&(t)->self))) {		\

	    MUTEX_UNLOCK(&(t)->mutex);				\

	    Perl_croak_nocontext("panic: DETACH (%d) [%s:%d]",	\

				 _eC_, __FILE__, __LINE__);	\

	}							\

    } STMT_END



#    define PERL_GET_CONTEXT	Perl_get_context()

#    define PERL_SET_CONTEXT(t)	Perl_set_context((void*)t)



#    define PTHREAD_GETSPECIFIC_INT

#    ifdef DJGPP

#      define pthread_addr_t any_t

#      define NEED_PTHREAD_INIT

#      define PTHREAD_CREATE_JOINABLE (1)

#    endif

#    ifdef __OPEN_VM

#      define pthread_addr_t void *

#    endif

#    ifdef OEMVS

#      define pthread_addr_t void *

#      define pthread_create(t,a,s,d)        pthread_create(t,&(a),s,d)

#      define pthread_keycreate              pthread_key_create

#    endif

#    ifdef VMS

#      define pthread_attr_init(a) pthread_attr_create(a)

#      define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_setdetach_np(a,s)

#      define PTHREAD_CREATE(t,a,s,d) pthread_create(t,a,s,d)

#      define pthread_key_create(k,d) pthread_keycreate(k,(pthread_destructor_t)(d))

#      define pthread_mutexattr_init(a) pthread_mutexattr_create(a)

#      define pthread_mutexattr_settype(a,t) pthread_mutexattr_setkind_np(a,t)

#    endif

#    if defined(__hpux) && defined(__ux_version) && __ux_version <= 1020

#      define pthread_attr_init(a) pthread_attr_create(a)

       /* XXX pthread_setdetach_np() missing in DCE threads on HP-UX 10.20 */

#      define PTHREAD_ATTR_SETDETACHSTATE(a,s)	(0)

#      define PTHREAD_CREATE(t,a,s,d) pthread_create(t,a,s,d)

#      define pthread_key_create(k,d) pthread_keycreate(k,(pthread_destructor_t)(d))

#      define pthread_mutexattr_init(a) pthread_mutexattr_create(a)

#      define pthread_mutexattr_settype(a,t) pthread_mutexattr_setkind_np(a,t)

#    endif

#    if defined(DJGPP) || defined(__OPEN_VM) || defined(OEMVS)

#      define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_attr_setdetachstate(a,&(s))

#      define YIELD pthread_yield(NULL)

#    endif

#  endif

#  if !defined(__hpux) || !defined(__ux_version) || __ux_version > 1020

#    define pthread_mutexattr_default NULL

#    define pthread_condattr_default  NULL

#  endif

#endif	/* NETWARE */

#endif



#ifndef PTHREAD_CREATE

/* You are not supposed to pass NULL as the 2nd arg of PTHREAD_CREATE(). */

#  define PTHREAD_CREATE(t,a,s,d) pthread_create(t,&(a),s,d)

#endif



#ifndef PTHREAD_ATTR_SETDETACHSTATE

#  define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_attr_setdetachstate(a,s)

#endif



#ifndef PTHREAD_CREATE_JOINABLE

#  ifdef OLD_PTHREAD_CREATE_JOINABLE

#    define PTHREAD_CREATE_JOINABLE OLD_PTHREAD_CREATE_JOINABLE

#  else

#    define PTHREAD_CREATE_JOINABLE 0 /* Panic?  No, guess. */

#  endif

#endif



#ifdef DGUX

#  define THREAD_CREATE_NEEDS_STACK (32*1024)

#endif



#ifdef __VMS

  /* Default is 1024 on VAX, 8192 otherwise */

#  ifdef __ia64

#    define THREAD_CREATE_NEEDS_STACK (48*1024)

#  else

#    define THREAD_CREATE_NEEDS_STACK (32*1024)

#  endif

#endif



#ifdef I_MACH_CTHREADS



/* cthreads interface */



/* #include <mach/cthreads.h> is in perl.h #ifdef I_MACH_CTHREADS */



#define MUTEX_INIT(m) \

    STMT_START {						\

	*m = mutex_alloc();					\

	if (*m) {						\

	    mutex_init(*m);					\

	} else {						\

	    Perl_croak_nocontext("panic: MUTEX_INIT [%s:%d]",	\

				 __FILE__, __LINE__);		\

	}							\

    } STMT_END



#define MUTEX_LOCK(m)			mutex_lock(*m)

#define MUTEX_UNLOCK(m)			mutex_unlock(*m)

#define MUTEX_DESTROY(m) \

    STMT_START {						\

	mutex_free(*m);						\

	*m = 0;							\

    } STMT_END



#define COND_INIT(c) \

    STMT_START {						\

	*c = condition_alloc();					\

	if (*c) {						\

	    condition_init(*c);					\

	}							\

	else {							\

	    Perl_croak_nocontext("panic: COND_INIT [%s:%d]",	\

				 __FILE__, __LINE__);		\

	}							\

    } STMT_END



#define COND_SIGNAL(c)		condition_signal(*c)

#define COND_BROADCAST(c)	condition_broadcast(*c)

#define COND_WAIT(c, m)		condition_wait(*c, *m)

#define COND_DESTROY(c) \

    STMT_START {						\

	condition_free(*c);					\

	*c = 0;							\

    } STMT_END



#define THREAD_CREATE(thr, f)	(thr->self = cthread_fork(f, thr), 0)

#define THREAD_POST_CREATE(thr)



#define THREAD_RET_TYPE		any_t

#define THREAD_RET_CAST(x)	((any_t) x)



#define DETACH(t)		cthread_detach(t->self)

#define JOIN(t, avp)		(*(avp) = MUTABLE_AV(cthread_join(t->self)))



#define PERL_SET_CONTEXT(t)	cthread_set_data(cthread_self(), t)

#define PERL_GET_CONTEXT	cthread_data(cthread_self())



#define INIT_THREADS		cthread_init()

#define YIELD			cthread_yield()

#define ALLOC_THREAD_KEY	NOOP

#define FREE_THREAD_KEY		NOOP

#define SET_THREAD_SELF(thr)	(thr->self = cthread_self())



#endif /* I_MACH_CTHREADS */



#ifndef YIELD

#  ifdef SCHED_YIELD

#    define YIELD SCHED_YIELD

#  else

#    ifdef HAS_SCHED_YIELD

#      define YIELD sched_yield()

#    else

#      ifdef HAS_PTHREAD_YIELD

    /* pthread_yield(NULL) platforms are expected

     * to have #defined YIELD for themselves. */

#        define YIELD pthread_yield()

#      endif

#    endif

#  endif

#endif



#ifdef __hpux

#  define MUTEX_INIT_NEEDS_MUTEX_ZEROED

#endif



#ifndef MUTEX_INIT



#  ifdef MUTEX_INIT_NEEDS_MUTEX_ZEROED

    /* Temporary workaround, true bug is deeper. --jhi 1999-02-25 */

#    define MUTEX_INIT(m) \

    STMT_START {						\

	int _eC_;						\

	Zero((m), 1, perl_mutex);                               \

 	if ((_eC_ = pthread_mutex_init((m), pthread_mutexattr_default)))	\

	    Perl_croak_nocontext("panic: MUTEX_INIT (%d) [%s:%d]",	\

				 _eC_, __FILE__, __LINE__);	\

    } STMT_END

#  else

#    define MUTEX_INIT(m) \

    STMT_START {						\

	int _eC_;						\

	if ((_eC_ = pthread_mutex_init((m), pthread_mutexattr_default)))	\

	    Perl_croak_nocontext("panic: MUTEX_INIT (%d) [%s:%d]",	\

				 _eC_, __FILE__, __LINE__);	\

    } STMT_END

#  endif



#  define MUTEX_LOCK(m) \

    STMT_START {						\

	int _eC_;						\

	if ((_eC_ = pthread_mutex_lock((m))))			\

	    Perl_croak_nocontext("panic: MUTEX_LOCK (%d) [%s:%d]",	\

				 _eC_, __FILE__, __LINE__);	\

    } STMT_END



#  define MUTEX_UNLOCK(m) \

    STMT_START {						\

	int _eC_;						\

	if ((_eC_ = pthread_mutex_unlock((m))))			\

	    Perl_croak_nocontext("panic: MUTEX_UNLOCK (%d) [%s:%d]",	\

				 _eC_, __FILE__, __LINE__);	\

    } STMT_END



#  define MUTEX_DESTROY(m) \

    STMT_START {						\

	int _eC_;						\

	if ((_eC_ = pthread_mutex_destroy((m))))		\

	    Perl_croak_nocontext("panic: MUTEX_DESTROY (%d) [%s:%d]",	\

				 _eC_, __FILE__, __LINE__);	\

    } STMT_END

#endif /* MUTEX_INIT */



#ifndef COND_INIT

#  define COND_INIT(c) \

    STMT_START {						\

	int _eC_;						\

	if ((_eC_ = pthread_cond_init((c), pthread_condattr_default)))	\

	    Perl_croak_nocontext("panic: COND_INIT (%d) [%s:%d]",	\

				 _eC_, __FILE__, __LINE__);	\

    } STMT_END



#  define COND_SIGNAL(c) \

    STMT_START {						\

	int _eC_;						\

	if ((_eC_ = pthread_cond_signal((c))))			\

	    Perl_croak_nocontext("panic: COND_SIGNAL (%d) [%s:%d]",	\

				 _eC_, __FILE__, __LINE__);	\

    } STMT_END



#  define COND_BROADCAST(c) \

    STMT_START {						\

	int _eC_;						\

	if ((_eC_ = pthread_cond_broadcast((c))))		\

	    Perl_croak_nocontext("panic: COND_BROADCAST (%d) [%s:%d]",	\

				 _eC_, __FILE__, __LINE__);	\

    } STMT_END



#  define COND_WAIT(c, m) \

    STMT_START {						\

	int _eC_;						\

	if ((_eC_ = pthread_cond_wait((c), (m))))		\

	    Perl_croak_nocontext("panic: COND_WAIT (%d) [%s:%d]",	\

				 _eC_, __FILE__, __LINE__);	\

    } STMT_END



#  define COND_DESTROY(c) \

    STMT_START {						\

	int _eC_;						\

	if ((_eC_ = pthread_cond_destroy((c))))			\

	    Perl_croak_nocontext("panic: COND_DESTROY (%d) [%s:%d]",	\

				 _eC_, __FILE__, __LINE__);	\

    } STMT_END

#endif /* COND_INIT */



/* DETACH(t) must only be called while holding t->mutex */

#ifndef DETACH

#  define DETACH(t) \

    STMT_START {						\

	int _eC_;						\

	if ((_eC_ = pthread_detach((t)->self))) {		\

	    MUTEX_UNLOCK(&(t)->mutex);				\

	    Perl_croak_nocontext("panic: DETACH (%d) [%s:%d]",	\

				 _eC_, __FILE__, __LINE__);	\

	}							\

    } STMT_END

#endif /* DETACH */



#ifndef JOIN

#  define JOIN(t, avp) \

    STMT_START {						\

	int _eC_;						\

	if ((_eC_ = pthread_join((t)->self, (void**)(avp))))	\

	    Perl_croak_nocontext("panic: pthread_join (%d) [%s:%d]",	\

				 _eC_, __FILE__, __LINE__);	\

    } STMT_END

#endif /* JOIN */



/* Use an unchecked fetch of thread-specific data instead of a checked one.

 * It would fail if the key were bogus, but if the key were bogus then

 * Really Bad Things would be happening anyway. --dan */

#if (defined(__ALPHA) && (__VMS_VER >= 70000000)) || \

    (defined(__alpha) && defined(__osf__) && !defined(__GNUC__)) /* Available only on >= 4.0 */

#  define HAS_PTHREAD_UNCHECKED_GETSPECIFIC_NP /* Configure test needed */

#endif



#ifdef HAS_PTHREAD_UNCHECKED_GETSPECIFIC_NP

#  define PTHREAD_GETSPECIFIC(key) pthread_unchecked_getspecific_np(key)

#else

#    define PTHREAD_GETSPECIFIC(key) pthread_getspecific(key)

#endif



#ifndef PERL_GET_CONTEXT

#  define PERL_GET_CONTEXT	PTHREAD_GETSPECIFIC(PL_thr_key)

#endif



#ifndef PERL_SET_CONTEXT

#  define PERL_SET_CONTEXT(t) \

    STMT_START {						\

	int _eC_;						\

	if ((_eC_ = pthread_setspecific(PL_thr_key, (void *)(t))))	\

	    Perl_croak_nocontext("panic: pthread_setspecific (%d) [%s:%d]",	\

				 _eC_, __FILE__, __LINE__);	\

    } STMT_END

#endif /* PERL_SET_CONTEXT */



#ifndef INIT_THREADS

#  ifdef NEED_PTHREAD_INIT

#    define INIT_THREADS pthread_init()

#  endif

#endif



#ifndef ALLOC_THREAD_KEY

#  define ALLOC_THREAD_KEY \

    STMT_START {						\

	if (pthread_key_create(&PL_thr_key, 0)) {		\

            write(2, STR_WITH_LEN("panic: pthread_key_create failed\n")); \

	    exit(1);						\

	}							\

    } STMT_END

#endif



#ifndef FREE_THREAD_KEY

#  define FREE_THREAD_KEY \

    STMT_START {						\

	pthread_key_delete(PL_thr_key);				\

    } STMT_END

#endif



#ifndef PTHREAD_ATFORK

#  ifdef HAS_PTHREAD_ATFORK

#    define PTHREAD_ATFORK(prepare,parent,child)		\

	pthread_atfork(prepare,parent,child)

#  else

#    define PTHREAD_ATFORK(prepare,parent,child)		\

	NOOP

#  endif

#endif



#ifndef THREAD_RET_TYPE

#  define THREAD_RET_TYPE	void *

#  define THREAD_RET_CAST(p)	((void *)(p))

#endif /* THREAD_RET */



#  define LOCK_DOLLARZERO_MUTEX		MUTEX_LOCK(&PL_dollarzero_mutex)

#  define UNLOCK_DOLLARZERO_MUTEX	MUTEX_UNLOCK(&PL_dollarzero_mutex)



#endif /* USE_ITHREADS */



#ifndef MUTEX_LOCK

#  define MUTEX_LOCK(m)

#endif



#ifndef MUTEX_UNLOCK

#  define MUTEX_UNLOCK(m)

#endif



#ifndef MUTEX_INIT

#  define MUTEX_INIT(m)

#endif



#ifndef MUTEX_DESTROY

#  define MUTEX_DESTROY(m)

#endif



#ifndef COND_INIT

#  define COND_INIT(c)

#endif



#ifndef COND_SIGNAL

#  define COND_SIGNAL(c)

#endif



#ifndef COND_BROADCAST

#  define COND_BROADCAST(c)

#endif



#ifndef COND_WAIT

#  define COND_WAIT(c, m)

#endif



#ifndef COND_DESTROY

#  define COND_DESTROY(c)

#endif



#ifndef LOCK_DOLLARZERO_MUTEX

#  define LOCK_DOLLARZERO_MUTEX

#endif



#ifndef UNLOCK_DOLLARZERO_MUTEX

#  define UNLOCK_DOLLARZERO_MUTEX

#endif



/* THR, SET_THR, and dTHR are there for compatibility with old versions */

#ifndef THR

#  define THR		PERL_GET_THX

#endif



#ifndef SET_THR

#  define SET_THR(t)	PERL_SET_THX(t)

#endif



#ifndef dTHR

#  define dTHR dNOOP

#endif



#ifndef INIT_THREADS

#  define INIT_THREADS NOOP

#endif



/*

 * Local variables:

 * c-indentation-style: bsd

 * c-basic-offset: 4

 * indent-tabs-mode: t

 * End:

 *

 * ex: set ts=8 sts=4 sw=4 noet:

 */