[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(__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
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	34	# endif
13b98125 GS	35	# if defined(__hpux) && defined(__ux_version) && __ux_version <= 1020
	36	# define pthread_attr_init(a) pthread_attr_create(a)
	37	/* XXX pthread_setdetach_np() missing in DCE threads on HP-UX 10.20 */
c11cbe4f	38	# define PTHREAD_ATTR_SETDETACHSTATE(a,s) (0)
13b98125 GS	39	# define PTHREAD_CREATE(t,a,s,d) pthread_create(t,a,s,d)
	40	# define pthread_key_create(k,d) pthread_keycreate(k,(pthread_destructor_t)(d))
	41	# define pthread_mutexattr_init(a) pthread_mutexattr_create(a)
	42	# define pthread_mutexattr_settype(a,t) pthread_mutexattr_setkind_np(a,t)
	43	# endif
0d85d877 JH	44	# if defined(DJGPP) \|\| defined(__OPEN_VM)
	45	# define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_attr_setdetachstate(a,&(s))
	46	# define YIELD pthread_yield(NULL)
	47	# endif
0d85d877	48	# endif
13b98125	49	# if !defined(__hpux) \|\| !defined(__ux_version) \|\| __ux_version > 1020
1cfa4ec7	50	# define pthread_mutexattr_default NULL
0d85d877	51	# define pthread_condattr_default NULL
13b98125	52	# endif
0d85d877 JH	53	#endif
	54
	55	#ifndef PTHREAD_CREATE
	56	/* You are not supposed to pass NULL as the 2nd arg of PTHREAD_CREATE(). */
	57	# define PTHREAD_CREATE(t,a,s,d) pthread_create(t,&(a),s,d)
	58	#endif
	59
	60	#ifndef PTHREAD_ATTR_SETDETACHSTATE
	61	# define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_attr_setdetachstate(a,s)
d55594ae	62	#endif
1cfa4ec7	63
ef4af2be JH	64	#ifndef PTHREAD_CREATE_JOINABLE
	65	# ifdef OLD_PTHREAD_CREATE_JOINABLE
	66	# define PTHREAD_CREATE_JOINABLE OLD_PTHREAD_CREATE_JOINABLE
	67	# else
	68	# define PTHREAD_CREATE_JOINABLE 0 /* Panic? No, guess. */
	69	# endif
	70	#endif
	71
7f3d1cf1 BH	72	#ifdef I_MACH_CTHREADS
	73
	74	/* cthreads interface */
	75
	76	/* #include <mach/cthreads.h> is in perl.h #ifdef I_MACH_CTHREADS */
	77
ba869deb GS	78	#define MUTEX_INIT(m) \
	79	STMT_START { \
	80	*m = mutex_alloc(); \
	81	if (*m) { \
	82	mutex_init(*m); \
	83	} else { \
efc57feb	84	Perl_croak_nocontext("panic: MUTEX_INIT"); \
ba869deb GS	85	} \
	86	} STMT_END
	87
	88	#define MUTEX_LOCK(m) mutex_lock(*m)
ba869deb	89	#define MUTEX_UNLOCK(m) mutex_unlock(*m)
ba869deb GS	90	#define MUTEX_DESTROY(m) \
	91	STMT_START { \
	92	mutex_free(*m); \
	93	*m = 0; \
	94	} STMT_END
	95
	96	#define COND_INIT(c) \
	97	STMT_START { \
	98	*c = condition_alloc(); \
	99	if (*c) { \
	100	condition_init(*c); \
	101	} \
	102	else { \
efc57feb	103	Perl_croak_nocontext("panic: COND_INIT"); \
ba869deb GS	104	} \
ba869deb GS	105	} STMT_END
7f3d1cf1 BH	106
	107	#define COND_SIGNAL(c) condition_signal(*c)
	108	#define COND_BROADCAST(c) condition_broadcast(*c)
	109	#define COND_WAIT(c, m) condition_wait(c, m)
ba869deb GS	110	#define COND_DESTROY(c) \
	111	STMT_START { \
	112	condition_free(*c); \
	113	*c = 0; \
	114	} STMT_END
7f3d1cf1 BH	115
	116	#define THREAD_CREATE(thr, f) (thr->self = cthread_fork(f, thr), 0)
	117	#define THREAD_POST_CREATE(thr)
	118
	119	#define THREAD_RET_TYPE any_t
	120	#define THREAD_RET_CAST(x) ((any_t) x)
	121
	122	#define DETACH(t) cthread_detach(t->self)
	123	#define JOIN(t, avp) ((avp) = (AV )cthread_join(t->self))
	124
ba869deb GS	125	#define PERL_SET_CONTEXT(t) cthread_set_data(cthread_self(), t)
ba869deb GS	126	#define PERL_GET_CONTEXT cthread_data(cthread_self())
7f3d1cf1 BH	127
	128	#define INIT_THREADS cthread_init()
	129	#define YIELD cthread_yield()
ba869deb	130	#define ALLOC_THREAD_KEY NOOP
3a6f1039	131	#define FREE_THREAD_KEY NOOP
7f3d1cf1 BH	132	#define SET_THREAD_SELF(thr) (thr->self = cthread_self())
	133
	134	#endif /* I_MACH_CTHREADS */
	135
1cfa4ec7	136	#ifndef YIELD
e7a4f449 JH	137	# ifdef SCHED_YIELD
	138	# define YIELD SCHED_YIELD
	139	# else
	140	# ifdef HAS_SCHED_YIELD
	141	# define YIELD sched_yield()
	142	# else
	143	# ifdef HAS_PTHREAD_YIELD
	144	/* pthread_yield(NULL) platforms are expected
	145	* to have #defined YIELD for themselves. */
	146	# define YIELD pthread_yield()
	147	# endif
	148	# endif
	149	# endif
9731c6ca	150	#endif
11343788	151
227c31c3 JH	152	#ifdef __hpux
	153	# define MUTEX_INIT_NEEDS_MUTEX_ZEROED
	154	#endif
	155
ea0efc06	156	#ifndef MUTEX_INIT
ba869deb GS	157
ba869deb GS	158	# ifdef MUTEX_INIT_NEEDS_MUTEX_ZEROED
227c31c3	159	/* Temporary workaround, true bug is deeper. --jhi 1999-02-25 */
ba869deb	160	# define MUTEX_INIT(m) \
227c31c3 JH	161	STMT_START { \
	162	Zero((m), 1, perl_mutex); \
	163	if (pthread_mutex_init((m), pthread_mutexattr_default)) \
efc57feb	164	Perl_croak_nocontext("panic: MUTEX_INIT"); \
227c31c3	165	} STMT_END
ba869deb GS	166	# else
ba869deb GS	167	# define MUTEX_INIT(m) \
ea0efc06 MB	168	STMT_START { \
ea0efc06 MB	169	if (pthread_mutex_init((m), pthread_mutexattr_default)) \
efc57feb	170	Perl_croak_nocontext("panic: MUTEX_INIT"); \
ea0efc06	171	} STMT_END
ba869deb GS	172	# endif
	173
	174	# define MUTEX_LOCK(m) \
	175	STMT_START { \
	176	if (pthread_mutex_lock((m))) \
ba869deb	177	Perl_croak_nocontext("panic: MUTEX_LOCK"); \
cea2e8a9	178	} STMT_END
ba869deb	179
efc57feb	180	# define MUTEX_UNLOCK(m) \
ba869deb GS	181	STMT_START { \
	182	if (pthread_mutex_unlock((m))) \
	183	Perl_croak_nocontext("panic: MUTEX_UNLOCK"); \
ea0efc06	184	} STMT_END
ba869deb GS	185
	186	# define MUTEX_DESTROY(m) \
	187	STMT_START { \
	188	if (pthread_mutex_destroy((m))) \
efc57feb	189	Perl_croak_nocontext("panic: MUTEX_DESTROY"); \
ea0efc06 MB	190	} STMT_END
	191	#endif /* MUTEX_INIT */
	192
	193	#ifndef COND_INIT
ba869deb	194	# define COND_INIT(c) \
ea0efc06 MB	195	STMT_START { \
ea0efc06 MB	196	if (pthread_cond_init((c), pthread_condattr_default)) \
efc57feb	197	Perl_croak_nocontext("panic: COND_INIT"); \
ea0efc06	198	} STMT_END
ba869deb GS	199
	200	# define COND_SIGNAL(c) \
	201	STMT_START { \
	202	if (pthread_cond_signal((c))) \
efc57feb	203	Perl_croak_nocontext("panic: COND_SIGNAL"); \
ea0efc06	204	} STMT_END
ba869deb GS	205
	206	# define COND_BROADCAST(c) \
	207	STMT_START { \
	208	if (pthread_cond_broadcast((c))) \
efc57feb	209	Perl_croak_nocontext("panic: COND_BROADCAST"); \
ea0efc06	210	} STMT_END
ba869deb GS	211
	212	# define COND_WAIT(c, m) \
	213	STMT_START { \
	214	if (pthread_cond_wait((c), (m))) \
efc57feb	215	Perl_croak_nocontext("panic: COND_WAIT"); \
ea0efc06	216	} STMT_END
ba869deb GS	217
	218	# define COND_DESTROY(c) \
	219	STMT_START { \
	220	if (pthread_cond_destroy((c))) \
efc57feb	221	Perl_croak_nocontext("panic: COND_DESTROY"); \
ea0efc06 MB	222	} STMT_END
ea0efc06 MB	223	#endif /* COND_INIT */
33f46ff6	224
f826a10b	225	/* DETACH(t) must only be called while holding t->mutex */
ea0efc06	226	#ifndef DETACH
ba869deb GS	227	# define DETACH(t) \
	228	STMT_START { \
	229	if (pthread_detach((t)->self)) { \
	230	MUTEX_UNLOCK(&(t)->mutex); \
efc57feb	231	Perl_croak_nocontext("panic: DETACH"); \
ba869deb	232	} \
ea0efc06 MB	233	} STMT_END
ea0efc06 MB	234	#endif /* DETACH */
33f46ff6	235
ea0efc06	236	#ifndef JOIN
ba869deb GS	237	# define JOIN(t, avp) \
	238	STMT_START { \
	239	if (pthread_join((t)->self, (void**)(avp))) \
efc57feb	240	Perl_croak_nocontext("panic: pthread_join"); \
ea0efc06 MB	241	} STMT_END
	242	#endif /* JOIN */
	243
ba869deb GS	244	#ifndef PERL_GET_CONTEXT
	245	# define PERL_GET_CONTEXT pthread_getspecific(PL_thr_key)
	246	#endif
	247
	248	#ifndef PERL_SET_CONTEXT
	249	# define PERL_SET_CONTEXT(t) \
	250	STMT_START { \
	251	if (pthread_setspecific(PL_thr_key, (void *)(t))) \
efc57feb	252	Perl_croak_nocontext("panic: pthread_setspecific"); \
ea0efc06	253	} STMT_END
ba869deb	254	#endif /* PERL_SET_CONTEXT */
ea0efc06	255
1feb2720 GS	256	#ifndef INIT_THREADS
	257	# ifdef NEED_PTHREAD_INIT
	258	# define INIT_THREADS pthread_init()
	259	# endif
0d85d877	260	#endif
ea0efc06	261
ba869deb GS	262	#ifndef ALLOC_THREAD_KEY
	263	# define ALLOC_THREAD_KEY \
	264	STMT_START { \
c44d3fdb	265	if (pthread_key_create(&PL_thr_key, 0)) { \
0139fc7d	266	PerlIO_printf(PerlIO_stderr(), "panic: pthread_key_create"); \
c44d3fdb GS	267	exit(1); \
c44d3fdb GS	268	} \
ba869deb GS	269	} STMT_END
	270	#endif
	271
3a6f1039 GS	272	#ifndef FREE_THREAD_KEY
	273	# define FREE_THREAD_KEY \
	274	STMT_START { \
	275	pthread_key_delete(PL_thr_key); \
	276	} STMT_END
	277	#endif
	278
1feb2720 GS	279	#ifndef THREAD_RET_TYPE
	280	# define THREAD_RET_TYPE void *
	281	# define THREAD_RET_CAST(p) ((void *)(p))
	282	#endif /* THREAD_RET */
	283
	284	#if defined(USE_THREADS)
	285
940cb80d	286	/* Accessor for per-thread SVs */
1feb2720	287	# define THREADSV(i) (thr->threadsvp[i])
940cb80d MB	288
	289	/*
	290	* LOCK_SV_MUTEX and UNLOCK_SV_MUTEX are performance-critical. Here, we
	291	* try only locking them if there may be more than one thread in existence.
	292	* Systems with very fast mutexes (and/or slow conditionals) may wish to
	293	* remove the "if (threadnum) ..." test.
b099ddc0	294	* XXX do NOT use C<if (PL_threadnum) ...> -- it sets up race conditions!
940cb80d	295	*/
1feb2720 GS	296	# define LOCK_SV_MUTEX MUTEX_LOCK(&PL_sv_mutex)
	297	# define UNLOCK_SV_MUTEX MUTEX_UNLOCK(&PL_sv_mutex)
	298	# define LOCK_STRTAB_MUTEX MUTEX_LOCK(&PL_strtab_mutex)
	299	# define UNLOCK_STRTAB_MUTEX MUTEX_UNLOCK(&PL_strtab_mutex)
	300	# define LOCK_CRED_MUTEX MUTEX_LOCK(&PL_cred_mutex)
	301	# define UNLOCK_CRED_MUTEX MUTEX_UNLOCK(&PL_cred_mutex)
1cb75286 BS	302	# define LOCK_FDPID_MUTEX MUTEX_LOCK(&PL_fdpid_mutex)
1cb75286 BS	303	# define UNLOCK_FDPID_MUTEX MUTEX_UNLOCK(&PL_fdpid_mutex)
67368f91 HS	304	# define LOCK_SV_LOCK_MUTEX MUTEX_LOCK(&PL_sv_lock_mutex)
67368f91 HS	305	# define UNLOCK_SV_LOCK_MUTEX MUTEX_UNLOCK(&PL_sv_lock_mutex)
11343788	306
33f46ff6	307	/* Values and macros for thr->flags */
605e5515 MB	308	#define THRf_STATE_MASK 7
	309	#define THRf_R_JOINABLE 0
	310	#define THRf_R_JOINED 1
	311	#define THRf_R_DETACHED 2
	312	#define THRf_ZOMBIE 3
	313	#define THRf_DEAD 4
f93b4edd	314
458fb581	315	#define THRf_DID_DIE 8
07b73707	316
f826a10b	317	/* ThrSTATE(t) and ThrSETSTATE(t) must only be called while holding t->mutex */
458fb581	318	#define ThrSTATE(t) ((t)->flags & THRf_STATE_MASK)
f93b4edd	319	#define ThrSETSTATE(t, s) STMT_START { \
605e5515	320	(t)->flags &= ~THRf_STATE_MASK; \
33f46ff6	321	(t)->flags \|= (s); \
bf49b057	322	DEBUG_S(PerlIO_printf(Perl_debug_log, \
605e5515	323	"thread %p set to state %d\n", (t), (s))); \
f93b4edd MB	324	} STMT_END
	325
	326	typedef struct condpair {
f826a10b MB	327	perl_mutex mutex; /* Protects all other fields */
	328	perl_cond owner_cond; /* For when owner changes at all */
	329	perl_cond cond; /* For cond_signal and cond_broadcast */
	330	Thread owner; /* Currently owning thread */
f93b4edd MB	331	} condpair_t;
	332
	333	#define MgMUTEXP(mg) (&((condpair_t *)(mg->mg_ptr))->mutex)
	334	#define MgOWNERCONDP(mg) (&((condpair_t *)(mg->mg_ptr))->owner_cond)
	335	#define MgCONDP(mg) (&((condpair_t *)(mg->mg_ptr))->cond)
	336	#define MgOWNER(mg) ((condpair_t *)(mg->mg_ptr))->owner
	337
11343788	338	#endif /* USE_THREADS */
1feb2720 GS	339	#endif /* USE_THREADS \|\| USE_ITHREADS */
	340
	341	#ifndef MUTEX_LOCK
	342	# define MUTEX_LOCK(m)
	343	#endif
	344
1feb2720 GS	345	#ifndef MUTEX_UNLOCK
	346	# define MUTEX_UNLOCK(m)
	347	#endif
1feb2720 GS	348
	349	#ifndef MUTEX_INIT
	350	# define MUTEX_INIT(m)
	351	#endif
	352
	353	#ifndef MUTEX_DESTROY
	354	# define MUTEX_DESTROY(m)
	355	#endif
	356
	357	#ifndef COND_INIT
	358	# define COND_INIT(c)
	359	#endif
	360
	361	#ifndef COND_SIGNAL
	362	# define COND_SIGNAL(c)
	363	#endif
	364
	365	#ifndef COND_BROADCAST
	366	# define COND_BROADCAST(c)
	367	#endif
	368
	369	#ifndef COND_WAIT
	370	# define COND_WAIT(c, m)
	371	#endif
	372
	373	#ifndef COND_DESTROY
	374	# define COND_DESTROY(c)
	375	#endif
	376
	377	#ifndef LOCK_SV_MUTEX
	378	# define LOCK_SV_MUTEX
	379	#endif
	380
	381	#ifndef UNLOCK_SV_MUTEX
	382	# define UNLOCK_SV_MUTEX
	383	#endif
	384
	385	#ifndef LOCK_STRTAB_MUTEX
	386	# define LOCK_STRTAB_MUTEX
	387	#endif
	388
	389	#ifndef UNLOCK_STRTAB_MUTEX
	390	# define UNLOCK_STRTAB_MUTEX
	391	#endif
	392
	393	#ifndef LOCK_CRED_MUTEX
	394	# define LOCK_CRED_MUTEX
	395	#endif
	396
	397	#ifndef UNLOCK_CRED_MUTEX
	398	# define UNLOCK_CRED_MUTEX
	399	#endif
	400
1cb75286 BS	401	#ifndef LOCK_FDPID_MUTEX
	402	# define LOCK_FDPID_MUTEX
	403	#endif
	404
	405	#ifndef UNLOCK_FDPID_MUTEX
	406	# define UNLOCK_FDPID_MUTEX
	407	#endif
	408
67368f91 HS	409	#ifndef LOCK_SV_LOCK_MUTEX
	410	# define LOCK_SV_LOCK_MUTEX
	411	#endif
	412
	413	#ifndef UNLOCK_SV_LOCK_MUTEX
	414	# define UNLOCK_SV_LOCK_MUTEX
	415	#endif
	416
ba869deb	417	/* THR, SET_THR, and dTHR are there for compatibility with old versions */
1feb2720	418	#ifndef THR
ba869deb GS	419	# define THR PERL_GET_THX
	420	#endif
	421
	422	#ifndef SET_THR
	423	# define SET_THR(t) PERL_SET_THX(t)
1feb2720 GS	424	#endif
	425
	426	#ifndef dTHR
	427	# define dTHR dNOOP
	428	#endif
	429
	430	#ifndef INIT_THREADS
	431	# define INIT_THREADS NOOP
	432	#endif