[perl5.git] / thread.h

#if defined(USE_THREADS) || defined(USE_ITHREADS)

#if defined(VMS)
#include <builtins.h>
#endif

#ifdef WIN32
#  include <win32thread.h>
#else
#  ifdef OLD_PTHREADS_API /* Here be dragons. */
#    define DETACH(t) \
    STMT_START {						\
	if (pthread_detach(&(t)->self)) {			\
	    MUTEX_UNLOCK(&(t)->mutex);				\
	    Perl_croak_nocontext("panic: DETACH");		\
	}							\
    } 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 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)
#      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

#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 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");		\
	}							\
    } 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");		\
	}							\
    } 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) = (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 {						\
	Zero((m), 1, perl_mutex);                               \
 	if (pthread_mutex_init((m), pthread_mutexattr_default))	\
	    Perl_croak_nocontext("panic: MUTEX_INIT");		\
    } STMT_END
#  else
#    define MUTEX_INIT(m) \
    STMT_START {						\
	if (pthread_mutex_init((m), pthread_mutexattr_default))	\
	    Perl_croak_nocontext("panic: MUTEX_INIT");		\
    } STMT_END
#  endif

#  define MUTEX_LOCK(m) \
    STMT_START {						\
	if (pthread_mutex_lock((m)))				\
	    Perl_croak_nocontext("panic: MUTEX_LOCK");		\
    } STMT_END

#  define MUTEX_UNLOCK(m) \
    STMT_START {						\
	if (pthread_mutex_unlock((m)))				\
	    Perl_croak_nocontext("panic: MUTEX_UNLOCK");	\
    } STMT_END

#  define MUTEX_DESTROY(m) \
    STMT_START {						\
	if (pthread_mutex_destroy((m)))				\
	    Perl_croak_nocontext("panic: MUTEX_DESTROY");	\
    } STMT_END
#endif /* MUTEX_INIT */

#ifndef COND_INIT
#  define COND_INIT(c) \
    STMT_START {						\
	if (pthread_cond_init((c), pthread_condattr_default))	\
	    Perl_croak_nocontext("panic: COND_INIT");		\
    } STMT_END

#  define COND_SIGNAL(c) \
    STMT_START {						\
	if (pthread_cond_signal((c)))				\
	    Perl_croak_nocontext("panic: COND_SIGNAL");		\
    } STMT_END

#  define COND_BROADCAST(c) \
    STMT_START {						\
	if (pthread_cond_broadcast((c)))			\
	    Perl_croak_nocontext("panic: COND_BROADCAST");	\
    } STMT_END

#  define COND_WAIT(c, m) \
    STMT_START {						\
	if (pthread_cond_wait((c), (m)))			\
	    Perl_croak_nocontext("panic: COND_WAIT");		\
    } STMT_END

#  define COND_DESTROY(c) \
    STMT_START {						\
	if (pthread_cond_destroy((c)))				\
	    Perl_croak_nocontext("panic: COND_DESTROY");	\
    } STMT_END
#endif /* COND_INIT */

/* DETACH(t) must only be called while holding t->mutex */
#ifndef DETACH
#  define DETACH(t) \
    STMT_START {						\
	if (pthread_detach((t)->self)) {			\
	    MUTEX_UNLOCK(&(t)->mutex);				\
	    Perl_croak_nocontext("panic: DETACH");		\
	}							\
    } STMT_END
#endif /* DETACH */

#ifndef JOIN
#  define JOIN(t, avp) \
    STMT_START {						\
	if (pthread_join((t)->self, (void**)(avp)))		\
	    Perl_croak_nocontext("panic: pthread_join");	\
    } STMT_END
#endif /* JOIN */

#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 {						\
	if (pthread_setspecific(PL_thr_key, (void *)(t)))	\
	    Perl_croak_nocontext("panic: pthread_setspecific");	\
    } 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))	{		\
	    PerlIO_printf(PerlIO_stderr(), "panic: pthread_key_create");	\
	    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 THREAD_RET_TYPE
#  define THREAD_RET_TYPE	void *
#  define THREAD_RET_CAST(p)	((void *)(p))
#endif /* THREAD_RET */

#if defined(USE_THREADS)

/* Accessor for per-thread SVs */
#  define THREADSV(i) (thr->threadsvp[i])

/*
 * LOCK_SV_MUTEX and UNLOCK_SV_MUTEX are performance-critical. Here, we
 * try only locking them if there may be more than one thread in existence.
 * Systems with very fast mutexes (and/or slow conditionals) may wish to
 * remove the "if (threadnum) ..." test.
 * XXX do NOT use C<if (PL_threadnum) ...> -- it sets up race conditions!
 */
#  define LOCK_SV_MUTEX		MUTEX_LOCK(&PL_sv_mutex)
#  define UNLOCK_SV_MUTEX	MUTEX_UNLOCK(&PL_sv_mutex)
#  define LOCK_STRTAB_MUTEX	MUTEX_LOCK(&PL_strtab_mutex)
#  define UNLOCK_STRTAB_MUTEX	MUTEX_UNLOCK(&PL_strtab_mutex)
#  define LOCK_CRED_MUTEX	MUTEX_LOCK(&PL_cred_mutex)
#  define UNLOCK_CRED_MUTEX	MUTEX_UNLOCK(&PL_cred_mutex)
#  define LOCK_FDPID_MUTEX	MUTEX_LOCK(&PL_fdpid_mutex)
#  define UNLOCK_FDPID_MUTEX	MUTEX_UNLOCK(&PL_fdpid_mutex)
#  define LOCK_SV_LOCK_MUTEX	MUTEX_LOCK(&PL_sv_lock_mutex)
#  define UNLOCK_SV_LOCK_MUTEX	MUTEX_UNLOCK(&PL_sv_lock_mutex)

/* Values and macros for thr->flags */
#define THRf_STATE_MASK	7
#define THRf_R_JOINABLE	0
#define THRf_R_JOINED	1
#define THRf_R_DETACHED	2
#define THRf_ZOMBIE	3
#define THRf_DEAD	4

#define THRf_DID_DIE	8

/* ThrSTATE(t) and ThrSETSTATE(t) must only be called while holding t->mutex */
#define ThrSTATE(t) ((t)->flags & THRf_STATE_MASK)
#define ThrSETSTATE(t, s) STMT_START {		\
	(t)->flags &= ~THRf_STATE_MASK;		\
	(t)->flags |= (s);			\
	DEBUG_S(PerlIO_printf(Perl_debug_log,	\
			      "thread %p set to state %d\n", (t), (s))); \
    } STMT_END

typedef struct condpair {
    perl_mutex	mutex;		/* Protects all other fields */
    perl_cond	owner_cond;	/* For when owner changes at all */
    perl_cond	cond;		/* For cond_signal and cond_broadcast */
    Thread	owner;		/* Currently owning thread */
} condpair_t;

#define MgMUTEXP(mg) (&((condpair_t *)(mg->mg_ptr))->mutex)
#define MgOWNERCONDP(mg) (&((condpair_t *)(mg->mg_ptr))->owner_cond)
#define MgCONDP(mg) (&((condpair_t *)(mg->mg_ptr))->cond)
#define MgOWNER(mg) ((condpair_t *)(mg->mg_ptr))->owner

#endif /* USE_THREADS */
#endif /* USE_THREADS || 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_SV_MUTEX
#  define LOCK_SV_MUTEX
#endif

#ifndef UNLOCK_SV_MUTEX
#  define UNLOCK_SV_MUTEX
#endif

#ifndef LOCK_STRTAB_MUTEX
#  define LOCK_STRTAB_MUTEX
#endif

#ifndef UNLOCK_STRTAB_MUTEX
#  define UNLOCK_STRTAB_MUTEX
#endif

#ifndef LOCK_CRED_MUTEX
#  define LOCK_CRED_MUTEX
#endif

#ifndef UNLOCK_CRED_MUTEX
#  define UNLOCK_CRED_MUTEX
#endif

#ifndef LOCK_FDPID_MUTEX
#  define LOCK_FDPID_MUTEX
#endif

#ifndef UNLOCK_FDPID_MUTEX
#  define UNLOCK_FDPID_MUTEX
#endif

#ifndef LOCK_SV_LOCK_MUTEX
#  define LOCK_SV_LOCK_MUTEX
#endif

#ifndef UNLOCK_SV_LOCK_MUTEX
#  define UNLOCK_SV_LOCK_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
Commit	Line	Data
1feb2720	1	#if defined(USE_THREADS) \|\| defined(USE_ITHREADS)
12ca11f6	2
fd8cd3a3 DS	3	#if defined(VMS)
	4	#include <builtins.h>
	5	#endif
	6
ea0efc06	7	#ifdef WIN32
d55594ae GS	8	# include <win32thread.h>
d55594ae GS	9	#else
0d85d877	10	# ifdef OLD_PTHREADS_API /* Here be dragons. */
ba869deb GS	11	# define DETACH(t) \
	12	STMT_START { \
	13	if (pthread_detach(&(t)->self)) { \
	14	MUTEX_UNLOCK(&(t)->mutex); \
efc57feb	15	Perl_croak_nocontext("panic: DETACH"); \
ba869deb	16	} \
ea0efc06	17	} STMT_END
ba869deb GS	18
	19	# define PERL_GET_CONTEXT Perl_get_context()
	20	# define PERL_SET_CONTEXT(t) Perl_set_context((void*)t)
	21
0d85d877 JH	22	# define PTHREAD_GETSPECIFIC_INT
	23	# ifdef DJGPP
	24	# define pthread_addr_t any_t
	25	# define NEED_PTHREAD_INIT
6dc3770d	26	# define PTHREAD_CREATE_JOINABLE (1)
0d85d877 JH	27	# endif
	28	# ifdef __OPEN_VM
	29	# define pthread_addr_t void *
	30	# endif
	31	# ifdef VMS
	32	# define pthread_attr_init(a) pthread_attr_create(a)
	33	# define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_setdetach_np(a,s)
6dc3770d	34	# define PTHREAD_CREATE(t,a,s,d) pthread_create(t,a,s,d)
0d85d877 JH	35	# define pthread_key_create(k,d) pthread_keycreate(k,(pthread_destructor_t)(d))
0d85d877 JH	36	# define pthread_mutexattr_init(a) pthread_mutexattr_create(a)
9bbd4fab	37	# define pthread_mutexattr_settype(a,t) pthread_mutexattr_setkind_np(a,t)
0d85d877	38	# endif
2eb25c99 JH	39	# if defined(__hpux) && defined(__ux_version) && __ux_version <= 1020
	40	# define pthread_attr_init(a) pthread_attr_create(a)
	41	/* XXX pthread_setdetach_np() missing in DCE threads on HP-UX 10.20 */
10617789	42	# define PTHREAD_ATTR_SETDETACHSTATE(a,s) (0)
2eb25c99 JH	43	# define PTHREAD_CREATE(t,a,s,d) pthread_create(t,a,s,d)
	44	# define pthread_key_create(k,d) pthread_keycreate(k,(pthread_destructor_t)(d))
	45	# define pthread_mutexattr_init(a) pthread_mutexattr_create(a)
	46	# define pthread_mutexattr_settype(a,t) pthread_mutexattr_setkind_np(a,t)
	47	# endif
0d85d877 JH	48	# if defined(DJGPP) \|\| defined(__OPEN_VM)
	49	# define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_attr_setdetachstate(a,&(s))
	50	# define YIELD pthread_yield(NULL)
	51	# endif
0d85d877	52	# endif
2eb25c99	53	# if !defined(__hpux) \|\| !defined(__ux_version) \|\| __ux_version > 1020
1cfa4ec7	54	# define pthread_mutexattr_default NULL
0d85d877	55	# define pthread_condattr_default NULL
2eb25c99	56	# endif
0d85d877 JH	57	#endif
	58
	59	#ifndef PTHREAD_CREATE
	60	/* You are not supposed to pass NULL as the 2nd arg of PTHREAD_CREATE(). */
	61	# define PTHREAD_CREATE(t,a,s,d) pthread_create(t,&(a),s,d)
	62	#endif
	63
	64	#ifndef PTHREAD_ATTR_SETDETACHSTATE
	65	# define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_attr_setdetachstate(a,s)
d55594ae	66	#endif
1cfa4ec7	67
ef4af2be JH	68	#ifndef PTHREAD_CREATE_JOINABLE
	69	# ifdef OLD_PTHREAD_CREATE_JOINABLE
	70	# define PTHREAD_CREATE_JOINABLE OLD_PTHREAD_CREATE_JOINABLE
	71	# else
	72	# define PTHREAD_CREATE_JOINABLE 0 /* Panic? No, guess. */
	73	# endif
	74	#endif
	75
7f3d1cf1 BH	76	#ifdef I_MACH_CTHREADS
	77
	78	/* cthreads interface */
	79
	80	/* #include <mach/cthreads.h> is in perl.h #ifdef I_MACH_CTHREADS */
	81
ba869deb GS	82	#define MUTEX_INIT(m) \
	83	STMT_START { \
	84	*m = mutex_alloc(); \
	85	if (*m) { \
	86	mutex_init(*m); \
	87	} else { \
efc57feb	88	Perl_croak_nocontext("panic: MUTEX_INIT"); \
ba869deb GS	89	} \
	90	} STMT_END
	91
	92	#define MUTEX_LOCK(m) mutex_lock(*m)
ba869deb	93	#define MUTEX_UNLOCK(m) mutex_unlock(*m)
ba869deb GS	94	#define MUTEX_DESTROY(m) \
	95	STMT_START { \
	96	mutex_free(*m); \
	97	*m = 0; \
	98	} STMT_END
	99
	100	#define COND_INIT(c) \
	101	STMT_START { \
	102	*c = condition_alloc(); \
	103	if (*c) { \
	104	condition_init(*c); \
	105	} \
	106	else { \
efc57feb	107	Perl_croak_nocontext("panic: COND_INIT"); \
ba869deb GS	108	} \
ba869deb GS	109	} STMT_END
7f3d1cf1 BH	110
	111	#define COND_SIGNAL(c) condition_signal(*c)
	112	#define COND_BROADCAST(c) condition_broadcast(*c)
	113	#define COND_WAIT(c, m) condition_wait(c, m)
ba869deb GS	114	#define COND_DESTROY(c) \
	115	STMT_START { \
	116	condition_free(*c); \
	117	*c = 0; \
	118	} STMT_END
7f3d1cf1 BH	119
	120	#define THREAD_CREATE(thr, f) (thr->self = cthread_fork(f, thr), 0)
	121	#define THREAD_POST_CREATE(thr)
	122
	123	#define THREAD_RET_TYPE any_t
	124	#define THREAD_RET_CAST(x) ((any_t) x)
	125
	126	#define DETACH(t) cthread_detach(t->self)
	127	#define JOIN(t, avp) ((avp) = (AV )cthread_join(t->self))
	128
ba869deb GS	129	#define PERL_SET_CONTEXT(t) cthread_set_data(cthread_self(), t)
ba869deb GS	130	#define PERL_GET_CONTEXT cthread_data(cthread_self())
7f3d1cf1 BH	131
	132	#define INIT_THREADS cthread_init()
	133	#define YIELD cthread_yield()
ba869deb	134	#define ALLOC_THREAD_KEY NOOP
e1b5da64	135	#define FREE_THREAD_KEY NOOP
7f3d1cf1 BH	136	#define SET_THREAD_SELF(thr) (thr->self = cthread_self())
	137
	138	#endif /* I_MACH_CTHREADS */
	139
1cfa4ec7	140	#ifndef YIELD
e7a4f449 JH	141	# ifdef SCHED_YIELD
	142	# define YIELD SCHED_YIELD
	143	# else
	144	# ifdef HAS_SCHED_YIELD
	145	# define YIELD sched_yield()
	146	# else
	147	# ifdef HAS_PTHREAD_YIELD
	148	/* pthread_yield(NULL) platforms are expected
	149	* to have #defined YIELD for themselves. */
	150	# define YIELD pthread_yield()
	151	# endif
	152	# endif
	153	# endif
9731c6ca	154	#endif
11343788	155
227c31c3 JH	156	#ifdef __hpux
	157	# define MUTEX_INIT_NEEDS_MUTEX_ZEROED
	158	#endif
	159
ea0efc06	160	#ifndef MUTEX_INIT
ba869deb GS	161
ba869deb GS	162	# ifdef MUTEX_INIT_NEEDS_MUTEX_ZEROED
227c31c3	163	/* Temporary workaround, true bug is deeper. --jhi 1999-02-25 */
ba869deb	164	# define MUTEX_INIT(m) \
227c31c3 JH	165	STMT_START { \
	166	Zero((m), 1, perl_mutex); \
	167	if (pthread_mutex_init((m), pthread_mutexattr_default)) \
efc57feb	168	Perl_croak_nocontext("panic: MUTEX_INIT"); \
227c31c3	169	} STMT_END
ba869deb GS	170	# else
ba869deb GS	171	# define MUTEX_INIT(m) \
ea0efc06 MB	172	STMT_START { \
ea0efc06 MB	173	if (pthread_mutex_init((m), pthread_mutexattr_default)) \
efc57feb	174	Perl_croak_nocontext("panic: MUTEX_INIT"); \
ea0efc06	175	} STMT_END
ba869deb GS	176	# endif
	177
	178	# define MUTEX_LOCK(m) \
	179	STMT_START { \
	180	if (pthread_mutex_lock((m))) \
ba869deb	181	Perl_croak_nocontext("panic: MUTEX_LOCK"); \
cea2e8a9	182	} STMT_END
ba869deb	183
efc57feb	184	# define MUTEX_UNLOCK(m) \
ba869deb GS	185	STMT_START { \
	186	if (pthread_mutex_unlock((m))) \
	187	Perl_croak_nocontext("panic: MUTEX_UNLOCK"); \
ea0efc06	188	} STMT_END
ba869deb GS	189
	190	# define MUTEX_DESTROY(m) \
	191	STMT_START { \
	192	if (pthread_mutex_destroy((m))) \
efc57feb	193	Perl_croak_nocontext("panic: MUTEX_DESTROY"); \
ea0efc06 MB	194	} STMT_END
	195	#endif /* MUTEX_INIT */
	196
	197	#ifndef COND_INIT
ba869deb	198	# define COND_INIT(c) \
ea0efc06 MB	199	STMT_START { \
ea0efc06 MB	200	if (pthread_cond_init((c), pthread_condattr_default)) \
efc57feb	201	Perl_croak_nocontext("panic: COND_INIT"); \
ea0efc06	202	} STMT_END
ba869deb GS	203
	204	# define COND_SIGNAL(c) \
	205	STMT_START { \
	206	if (pthread_cond_signal((c))) \
efc57feb	207	Perl_croak_nocontext("panic: COND_SIGNAL"); \
ea0efc06	208	} STMT_END
ba869deb GS	209
	210	# define COND_BROADCAST(c) \
	211	STMT_START { \
	212	if (pthread_cond_broadcast((c))) \
efc57feb	213	Perl_croak_nocontext("panic: COND_BROADCAST"); \
ea0efc06	214	} STMT_END
ba869deb GS	215
	216	# define COND_WAIT(c, m) \
	217	STMT_START { \
	218	if (pthread_cond_wait((c), (m))) \
efc57feb	219	Perl_croak_nocontext("panic: COND_WAIT"); \
ea0efc06	220	} STMT_END
ba869deb GS	221
	222	# define COND_DESTROY(c) \
	223	STMT_START { \
	224	if (pthread_cond_destroy((c))) \
efc57feb	225	Perl_croak_nocontext("panic: COND_DESTROY"); \
ea0efc06 MB	226	} STMT_END
ea0efc06 MB	227	#endif /* COND_INIT */
33f46ff6	228
f826a10b	229	/* DETACH(t) must only be called while holding t->mutex */
ea0efc06	230	#ifndef DETACH
ba869deb GS	231	# define DETACH(t) \
	232	STMT_START { \
	233	if (pthread_detach((t)->self)) { \
	234	MUTEX_UNLOCK(&(t)->mutex); \
efc57feb	235	Perl_croak_nocontext("panic: DETACH"); \
ba869deb	236	} \
ea0efc06 MB	237	} STMT_END
ea0efc06 MB	238	#endif /* DETACH */
33f46ff6	239
ea0efc06	240	#ifndef JOIN
ba869deb GS	241	# define JOIN(t, avp) \
	242	STMT_START { \
	243	if (pthread_join((t)->self, (void**)(avp))) \
efc57feb	244	Perl_croak_nocontext("panic: pthread_join"); \
ea0efc06 MB	245	} STMT_END
	246	#endif /* JOIN */
	247
ba869deb GS	248	#ifndef PERL_GET_CONTEXT
	249	# define PERL_GET_CONTEXT pthread_getspecific(PL_thr_key)
	250	#endif
	251
	252	#ifndef PERL_SET_CONTEXT
	253	# define PERL_SET_CONTEXT(t) \
	254	STMT_START { \
	255	if (pthread_setspecific(PL_thr_key, (void *)(t))) \
efc57feb	256	Perl_croak_nocontext("panic: pthread_setspecific"); \
ea0efc06	257	} STMT_END
ba869deb	258	#endif /* PERL_SET_CONTEXT */
ea0efc06	259
1feb2720 GS	260	#ifndef INIT_THREADS
	261	# ifdef NEED_PTHREAD_INIT
	262	# define INIT_THREADS pthread_init()
	263	# endif
0d85d877	264	#endif
ea0efc06	265
ba869deb GS	266	#ifndef ALLOC_THREAD_KEY
	267	# define ALLOC_THREAD_KEY \
	268	STMT_START { \
c44d3fdb	269	if (pthread_key_create(&PL_thr_key, 0)) { \
7bd161a1	270	PerlIO_printf(PerlIO_stderr(), "panic: pthread_key_create"); \
c44d3fdb GS	271	exit(1); \
c44d3fdb GS	272	} \
ba869deb GS	273	} STMT_END
	274	#endif
	275
e1b5da64 GS	276	#ifndef FREE_THREAD_KEY
	277	# define FREE_THREAD_KEY \
	278	STMT_START { \
	279	pthread_key_delete(PL_thr_key); \
	280	} STMT_END
	281	#endif
	282
1feb2720 GS	283	#ifndef THREAD_RET_TYPE
	284	# define THREAD_RET_TYPE void *
	285	# define THREAD_RET_CAST(p) ((void *)(p))
	286	#endif /* THREAD_RET */
	287
	288	#if defined(USE_THREADS)
	289
940cb80d	290	/* Accessor for per-thread SVs */
1feb2720	291	# define THREADSV(i) (thr->threadsvp[i])
940cb80d MB	292
	293	/*
	294	* LOCK_SV_MUTEX and UNLOCK_SV_MUTEX are performance-critical. Here, we
	295	* try only locking them if there may be more than one thread in existence.
	296	* Systems with very fast mutexes (and/or slow conditionals) may wish to
	297	* remove the "if (threadnum) ..." test.
b099ddc0	298	* XXX do NOT use C<if (PL_threadnum) ...> -- it sets up race conditions!
940cb80d	299	*/
1feb2720 GS	300	# define LOCK_SV_MUTEX MUTEX_LOCK(&PL_sv_mutex)
	301	# define UNLOCK_SV_MUTEX MUTEX_UNLOCK(&PL_sv_mutex)
	302	# define LOCK_STRTAB_MUTEX MUTEX_LOCK(&PL_strtab_mutex)
	303	# define UNLOCK_STRTAB_MUTEX MUTEX_UNLOCK(&PL_strtab_mutex)
	304	# define LOCK_CRED_MUTEX MUTEX_LOCK(&PL_cred_mutex)
	305	# define UNLOCK_CRED_MUTEX MUTEX_UNLOCK(&PL_cred_mutex)
4755096e GS	306	# define LOCK_FDPID_MUTEX MUTEX_LOCK(&PL_fdpid_mutex)
4755096e GS	307	# define UNLOCK_FDPID_MUTEX MUTEX_UNLOCK(&PL_fdpid_mutex)
631cfb58 GS	308	# define LOCK_SV_LOCK_MUTEX MUTEX_LOCK(&PL_sv_lock_mutex)
631cfb58 GS	309	# define UNLOCK_SV_LOCK_MUTEX MUTEX_UNLOCK(&PL_sv_lock_mutex)
11343788	310
33f46ff6	311	/* Values and macros for thr->flags */
605e5515 MB	312	#define THRf_STATE_MASK 7
	313	#define THRf_R_JOINABLE 0
	314	#define THRf_R_JOINED 1
	315	#define THRf_R_DETACHED 2
	316	#define THRf_ZOMBIE 3
	317	#define THRf_DEAD 4
f93b4edd	318
458fb581	319	#define THRf_DID_DIE 8
07b73707	320
f826a10b	321	/* ThrSTATE(t) and ThrSETSTATE(t) must only be called while holding t->mutex */
458fb581	322	#define ThrSTATE(t) ((t)->flags & THRf_STATE_MASK)
f93b4edd	323	#define ThrSETSTATE(t, s) STMT_START { \
605e5515	324	(t)->flags &= ~THRf_STATE_MASK; \
33f46ff6	325	(t)->flags \|= (s); \
bf49b057	326	DEBUG_S(PerlIO_printf(Perl_debug_log, \
605e5515	327	"thread %p set to state %d\n", (t), (s))); \
f93b4edd MB	328	} STMT_END
	329
	330	typedef struct condpair {
f826a10b MB	331	perl_mutex mutex; /* Protects all other fields */
	332	perl_cond owner_cond; /* For when owner changes at all */
	333	perl_cond cond; /* For cond_signal and cond_broadcast */
	334	Thread owner; /* Currently owning thread */
f93b4edd MB	335	} condpair_t;
	336
	337	#define MgMUTEXP(mg) (&((condpair_t *)(mg->mg_ptr))->mutex)
	338	#define MgOWNERCONDP(mg) (&((condpair_t *)(mg->mg_ptr))->owner_cond)
	339	#define MgCONDP(mg) (&((condpair_t *)(mg->mg_ptr))->cond)
	340	#define MgOWNER(mg) ((condpair_t *)(mg->mg_ptr))->owner
	341
11343788	342	#endif /* USE_THREADS */
1feb2720 GS	343	#endif /* USE_THREADS \|\| USE_ITHREADS */
	344
	345	#ifndef MUTEX_LOCK
	346	# define MUTEX_LOCK(m)
	347	#endif
	348
1feb2720 GS	349	#ifndef MUTEX_UNLOCK
	350	# define MUTEX_UNLOCK(m)
	351	#endif
1feb2720 GS	352
	353	#ifndef MUTEX_INIT
	354	# define MUTEX_INIT(m)
	355	#endif
	356
	357	#ifndef MUTEX_DESTROY
	358	# define MUTEX_DESTROY(m)
	359	#endif
	360
	361	#ifndef COND_INIT
	362	# define COND_INIT(c)
	363	#endif
	364
	365	#ifndef COND_SIGNAL
	366	# define COND_SIGNAL(c)
	367	#endif
	368
	369	#ifndef COND_BROADCAST
	370	# define COND_BROADCAST(c)
	371	#endif
	372
	373	#ifndef COND_WAIT
	374	# define COND_WAIT(c, m)
	375	#endif
	376
	377	#ifndef COND_DESTROY
	378	# define COND_DESTROY(c)
	379	#endif
	380
	381	#ifndef LOCK_SV_MUTEX
	382	# define LOCK_SV_MUTEX
	383	#endif
	384
	385	#ifndef UNLOCK_SV_MUTEX
	386	# define UNLOCK_SV_MUTEX
	387	#endif
	388
	389	#ifndef LOCK_STRTAB_MUTEX
	390	# define LOCK_STRTAB_MUTEX
	391	#endif
	392
	393	#ifndef UNLOCK_STRTAB_MUTEX
	394	# define UNLOCK_STRTAB_MUTEX
	395	#endif
	396
	397	#ifndef LOCK_CRED_MUTEX
	398	# define LOCK_CRED_MUTEX
	399	#endif
	400
	401	#ifndef UNLOCK_CRED_MUTEX
	402	# define UNLOCK_CRED_MUTEX
	403	#endif
	404
4755096e GS	405	#ifndef LOCK_FDPID_MUTEX
	406	# define LOCK_FDPID_MUTEX
	407	#endif
	408
	409	#ifndef UNLOCK_FDPID_MUTEX
	410	# define UNLOCK_FDPID_MUTEX
	411	#endif
	412
631cfb58 GS	413	#ifndef LOCK_SV_LOCK_MUTEX
	414	# define LOCK_SV_LOCK_MUTEX
	415	#endif
	416
	417	#ifndef UNLOCK_SV_LOCK_MUTEX
	418	# define UNLOCK_SV_LOCK_MUTEX
	419	#endif
	420
ba869deb	421	/* THR, SET_THR, and dTHR are there for compatibility with old versions */
1feb2720	422	#ifndef THR
ba869deb GS	423	# define THR PERL_GET_THX
	424	#endif
	425
	426	#ifndef SET_THR
	427	# define SET_THR(t) PERL_SET_THX(t)
1feb2720 GS	428	#endif
	429
	430	#ifndef dTHR
	431	# define dTHR dNOOP
	432	#endif
	433
	434	#ifndef INIT_THREADS
	435	# define INIT_THREADS NOOP
	436	#endif