[perl5.git] / thread.h

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

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