[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_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
b82d478d CB	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 */
	38	# define PTHREAD_CREATE(t,a,s,d) pthread_create(t,a,s,d)
	39	# define pthread_key_create(k,d) pthread_keycreate(k,(pthread_destructor_t)(d))
	40	# define pthread_mutexattr_init(a) pthread_mutexattr_create(a)
	41	# define pthread_mutexattr_settype(a,t) pthread_mutexattr_setkind_np(a,t)
	42	# endif
0d85d877 JH	43	# if defined(DJGPP) \|\| defined(__OPEN_VM)
	44	# define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_attr_setdetachstate(a,&(s))
	45	# define YIELD pthread_yield(NULL)
	46	# endif
0d85d877	47	# endif
b82d478d	48	# if !defined(__hpux) \|\| !defined(__ux_version) \|\| __ux_version > 1020
1cfa4ec7	49	# define pthread_mutexattr_default NULL
0d85d877	50	# define pthread_condattr_default NULL
b82d478d	51	# endif
0d85d877 JH	52	#endif
	53
	54	#ifndef PTHREAD_CREATE
	55	/* You are not supposed to pass NULL as the 2nd arg of PTHREAD_CREATE(). */
	56	# define PTHREAD_CREATE(t,a,s,d) pthread_create(t,&(a),s,d)
	57	#endif
	58
	59	#ifndef PTHREAD_ATTR_SETDETACHSTATE
	60	# define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_attr_setdetachstate(a,s)
d55594ae	61	#endif
1cfa4ec7	62
ef4af2be JH	63	#ifndef PTHREAD_CREATE_JOINABLE
	64	# ifdef OLD_PTHREAD_CREATE_JOINABLE
	65	# define PTHREAD_CREATE_JOINABLE OLD_PTHREAD_CREATE_JOINABLE
	66	# else
	67	# define PTHREAD_CREATE_JOINABLE 0 /* Panic? No, guess. */
	68	# endif
	69	#endif
	70
7f3d1cf1 BH	71	#ifdef I_MACH_CTHREADS
	72
	73	/* cthreads interface */
	74
	75	/* #include <mach/cthreads.h> is in perl.h #ifdef I_MACH_CTHREADS */
	76
ba869deb GS	77	#define MUTEX_INIT(m) \
	78	STMT_START { \
	79	*m = mutex_alloc(); \
	80	if (*m) { \
	81	mutex_init(*m); \
	82	} else { \
efc57feb	83	Perl_croak_nocontext("panic: MUTEX_INIT"); \
ba869deb GS	84	} \
	85	} STMT_END
	86
	87	#define MUTEX_LOCK(m) mutex_lock(*m)
ba869deb	88	#define MUTEX_UNLOCK(m) mutex_unlock(*m)
ba869deb GS	89	#define MUTEX_DESTROY(m) \
	90	STMT_START { \
	91	mutex_free(*m); \
	92	*m = 0; \
	93	} STMT_END
	94
	95	#define COND_INIT(c) \
	96	STMT_START { \
	97	*c = condition_alloc(); \
	98	if (*c) { \
	99	condition_init(*c); \
	100	} \
	101	else { \
efc57feb	102	Perl_croak_nocontext("panic: COND_INIT"); \
ba869deb GS	103	} \
ba869deb GS	104	} STMT_END
7f3d1cf1 BH	105
	106	#define COND_SIGNAL(c) condition_signal(*c)
	107	#define COND_BROADCAST(c) condition_broadcast(*c)
	108	#define COND_WAIT(c, m) condition_wait(c, m)
ba869deb GS	109	#define COND_DESTROY(c) \
	110	STMT_START { \
	111	condition_free(*c); \
	112	*c = 0; \
	113	} STMT_END
7f3d1cf1 BH	114
	115	#define THREAD_CREATE(thr, f) (thr->self = cthread_fork(f, thr), 0)
	116	#define THREAD_POST_CREATE(thr)
	117
	118	#define THREAD_RET_TYPE any_t
	119	#define THREAD_RET_CAST(x) ((any_t) x)
	120
	121	#define DETACH(t) cthread_detach(t->self)
	122	#define JOIN(t, avp) ((avp) = (AV )cthread_join(t->self))
	123
ba869deb GS	124	#define PERL_SET_CONTEXT(t) cthread_set_data(cthread_self(), t)
ba869deb GS	125	#define PERL_GET_CONTEXT cthread_data(cthread_self())
7f3d1cf1 BH	126
	127	#define INIT_THREADS cthread_init()
	128	#define YIELD cthread_yield()
ba869deb	129	#define ALLOC_THREAD_KEY NOOP
22d4bb9c	130	#define FREE_THREAD_KEY NOOP
7f3d1cf1 BH	131	#define SET_THREAD_SELF(thr) (thr->self = cthread_self())
	132
	133	#endif /* I_MACH_CTHREADS */
	134
1cfa4ec7	135	#ifndef YIELD
e7a4f449 JH	136	# ifdef SCHED_YIELD
	137	# define YIELD SCHED_YIELD
	138	# else
	139	# ifdef HAS_SCHED_YIELD
	140	# define YIELD sched_yield()
	141	# else
	142	# ifdef HAS_PTHREAD_YIELD
	143	/* pthread_yield(NULL) platforms are expected
	144	* to have #defined YIELD for themselves. */
	145	# define YIELD pthread_yield()
	146	# endif
	147	# endif
	148	# endif
9731c6ca	149	#endif
11343788	150
227c31c3 JH	151	#ifdef __hpux
	152	# define MUTEX_INIT_NEEDS_MUTEX_ZEROED
	153	#endif
	154
ea0efc06	155	#ifndef MUTEX_INIT
ba869deb GS	156
ba869deb GS	157	# ifdef MUTEX_INIT_NEEDS_MUTEX_ZEROED
227c31c3	158	/* Temporary workaround, true bug is deeper. --jhi 1999-02-25 */
ba869deb	159	# define MUTEX_INIT(m) \
227c31c3 JH	160	STMT_START { \
	161	Zero((m), 1, perl_mutex); \
	162	if (pthread_mutex_init((m), pthread_mutexattr_default)) \
efc57feb	163	Perl_croak_nocontext("panic: MUTEX_INIT"); \
227c31c3	164	} STMT_END
ba869deb GS	165	# else
ba869deb GS	166	# define MUTEX_INIT(m) \
ea0efc06 MB	167	STMT_START { \
ea0efc06 MB	168	if (pthread_mutex_init((m), pthread_mutexattr_default)) \
efc57feb	169	Perl_croak_nocontext("panic: MUTEX_INIT"); \
ea0efc06	170	} STMT_END
ba869deb GS	171	# endif
	172
	173	# define MUTEX_LOCK(m) \
	174	STMT_START { \
	175	if (pthread_mutex_lock((m))) \
ba869deb	176	Perl_croak_nocontext("panic: MUTEX_LOCK"); \
cea2e8a9	177	} STMT_END
ba869deb	178
efc57feb	179	# define MUTEX_UNLOCK(m) \
ba869deb GS	180	STMT_START { \
	181	if (pthread_mutex_unlock((m))) \
	182	Perl_croak_nocontext("panic: MUTEX_UNLOCK"); \
ea0efc06	183	} STMT_END
ba869deb GS	184
	185	# define MUTEX_DESTROY(m) \
	186	STMT_START { \
	187	if (pthread_mutex_destroy((m))) \
efc57feb	188	Perl_croak_nocontext("panic: MUTEX_DESTROY"); \
ea0efc06 MB	189	} STMT_END
	190	#endif /* MUTEX_INIT */
	191
	192	#ifndef COND_INIT
ba869deb	193	# define COND_INIT(c) \
ea0efc06 MB	194	STMT_START { \
ea0efc06 MB	195	if (pthread_cond_init((c), pthread_condattr_default)) \
efc57feb	196	Perl_croak_nocontext("panic: COND_INIT"); \
ea0efc06	197	} STMT_END
ba869deb GS	198
	199	# define COND_SIGNAL(c) \
	200	STMT_START { \
	201	if (pthread_cond_signal((c))) \
efc57feb	202	Perl_croak_nocontext("panic: COND_SIGNAL"); \
ea0efc06	203	} STMT_END
ba869deb GS	204
	205	# define COND_BROADCAST(c) \
	206	STMT_START { \
	207	if (pthread_cond_broadcast((c))) \
efc57feb	208	Perl_croak_nocontext("panic: COND_BROADCAST"); \
ea0efc06	209	} STMT_END
ba869deb GS	210
	211	# define COND_WAIT(c, m) \
	212	STMT_START { \
	213	if (pthread_cond_wait((c), (m))) \
efc57feb	214	Perl_croak_nocontext("panic: COND_WAIT"); \
ea0efc06	215	} STMT_END
ba869deb GS	216
	217	# define COND_DESTROY(c) \
	218	STMT_START { \
	219	if (pthread_cond_destroy((c))) \
efc57feb	220	Perl_croak_nocontext("panic: COND_DESTROY"); \
ea0efc06 MB	221	} STMT_END
ea0efc06 MB	222	#endif /* COND_INIT */
33f46ff6	223
f826a10b	224	/* DETACH(t) must only be called while holding t->mutex */
ea0efc06	225	#ifndef DETACH
ba869deb GS	226	# define DETACH(t) \
	227	STMT_START { \
	228	if (pthread_detach((t)->self)) { \
	229	MUTEX_UNLOCK(&(t)->mutex); \
efc57feb	230	Perl_croak_nocontext("panic: DETACH"); \
ba869deb	231	} \
ea0efc06 MB	232	} STMT_END
ea0efc06 MB	233	#endif /* DETACH */
33f46ff6	234
ea0efc06	235	#ifndef JOIN
ba869deb GS	236	# define JOIN(t, avp) \
	237	STMT_START { \
	238	if (pthread_join((t)->self, (void**)(avp))) \
efc57feb	239	Perl_croak_nocontext("panic: pthread_join"); \
ea0efc06 MB	240	} STMT_END
	241	#endif /* JOIN */
	242
ba869deb GS	243	#ifndef PERL_GET_CONTEXT
	244	# define PERL_GET_CONTEXT pthread_getspecific(PL_thr_key)
	245	#endif
	246
	247	#ifndef PERL_SET_CONTEXT
	248	# define PERL_SET_CONTEXT(t) \
	249	STMT_START { \
	250	if (pthread_setspecific(PL_thr_key, (void *)(t))) \
efc57feb	251	Perl_croak_nocontext("panic: pthread_setspecific"); \
ea0efc06	252	} STMT_END
ba869deb	253	#endif /* PERL_SET_CONTEXT */
ea0efc06	254
1feb2720 GS	255	#ifndef INIT_THREADS
	256	# ifdef NEED_PTHREAD_INIT
	257	# define INIT_THREADS pthread_init()
	258	# endif
0d85d877	259	#endif
ea0efc06	260
ba869deb GS	261	#ifndef ALLOC_THREAD_KEY
	262	# define ALLOC_THREAD_KEY \
	263	STMT_START { \
c44d3fdb	264	if (pthread_key_create(&PL_thr_key, 0)) { \
22d4bb9c	265	PerlIO_printf(PerlIO_stderr(), "panic: pthread_key_create"); \
c44d3fdb GS	266	exit(1); \
c44d3fdb GS	267	} \
ba869deb GS	268	} STMT_END
	269	#endif
	270
22d4bb9c CB	271	#ifndef FREE_THREAD_KEY
	272	# define FREE_THREAD_KEY \
	273	STMT_START { \
	274	pthread_key_delete(PL_thr_key); \
	275	} STMT_END
	276	#endif
	277
1feb2720 GS	278	#ifndef THREAD_RET_TYPE
	279	# define THREAD_RET_TYPE void *
	280	# define THREAD_RET_CAST(p) ((void *)(p))
	281	#endif /* THREAD_RET */
	282
	283	#if defined(USE_THREADS)
	284
940cb80d	285	/* Accessor for per-thread SVs */
1feb2720	286	# define THREADSV(i) (thr->threadsvp[i])
940cb80d MB	287
	288	/*
	289	* LOCK_SV_MUTEX and UNLOCK_SV_MUTEX are performance-critical. Here, we
	290	* try only locking them if there may be more than one thread in existence.
	291	* Systems with very fast mutexes (and/or slow conditionals) may wish to
	292	* remove the "if (threadnum) ..." test.
b099ddc0	293	* XXX do NOT use C<if (PL_threadnum) ...> -- it sets up race conditions!
940cb80d	294	*/
1feb2720 GS	295	# define LOCK_SV_MUTEX MUTEX_LOCK(&PL_sv_mutex)
	296	# define UNLOCK_SV_MUTEX MUTEX_UNLOCK(&PL_sv_mutex)
	297	# define LOCK_STRTAB_MUTEX MUTEX_LOCK(&PL_strtab_mutex)
	298	# define UNLOCK_STRTAB_MUTEX MUTEX_UNLOCK(&PL_strtab_mutex)
	299	# define LOCK_CRED_MUTEX MUTEX_LOCK(&PL_cred_mutex)
	300	# define UNLOCK_CRED_MUTEX MUTEX_UNLOCK(&PL_cred_mutex)
4b19af01 CB	301	# define LOCK_FDPID_MUTEX MUTEX_LOCK(&PL_fdpid_mutex)
	302	# define UNLOCK_FDPID_MUTEX MUTEX_UNLOCK(&PL_fdpid_mutex)
	303	# define LOCK_SV_LOCK_MUTEX MUTEX_LOCK(&PL_sv_lock_mutex)
	304	# define UNLOCK_SV_LOCK_MUTEX MUTEX_UNLOCK(&PL_sv_lock_mutex)
11343788	305
33f46ff6	306	/* Values and macros for thr->flags */
605e5515 MB	307	#define THRf_STATE_MASK 7
	308	#define THRf_R_JOINABLE 0
	309	#define THRf_R_JOINED 1
	310	#define THRf_R_DETACHED 2
	311	#define THRf_ZOMBIE 3
	312	#define THRf_DEAD 4
f93b4edd	313
458fb581	314	#define THRf_DID_DIE 8
07b73707	315
f826a10b	316	/* ThrSTATE(t) and ThrSETSTATE(t) must only be called while holding t->mutex */
458fb581	317	#define ThrSTATE(t) ((t)->flags & THRf_STATE_MASK)
f93b4edd	318	#define ThrSETSTATE(t, s) STMT_START { \
605e5515	319	(t)->flags &= ~THRf_STATE_MASK; \
33f46ff6	320	(t)->flags \|= (s); \
bf49b057	321	DEBUG_S(PerlIO_printf(Perl_debug_log, \
605e5515	322	"thread %p set to state %d\n", (t), (s))); \
f93b4edd MB	323	} STMT_END
	324
	325	typedef struct condpair {
f826a10b MB	326	perl_mutex mutex; /* Protects all other fields */
	327	perl_cond owner_cond; /* For when owner changes at all */
	328	perl_cond cond; /* For cond_signal and cond_broadcast */
	329	Thread owner; /* Currently owning thread */
f93b4edd MB	330	} condpair_t;
	331
	332	#define MgMUTEXP(mg) (&((condpair_t *)(mg->mg_ptr))->mutex)
	333	#define MgOWNERCONDP(mg) (&((condpair_t *)(mg->mg_ptr))->owner_cond)
	334	#define MgCONDP(mg) (&((condpair_t *)(mg->mg_ptr))->cond)
	335	#define MgOWNER(mg) ((condpair_t *)(mg->mg_ptr))->owner
	336
11343788	337	#endif /* USE_THREADS */
1feb2720 GS	338	#endif /* USE_THREADS \|\| USE_ITHREADS */
	339
	340	#ifndef MUTEX_LOCK
	341	# define MUTEX_LOCK(m)
	342	#endif
	343
1feb2720 GS	344	#ifndef MUTEX_UNLOCK
	345	# define MUTEX_UNLOCK(m)
	346	#endif
1feb2720 GS	347
	348	#ifndef MUTEX_INIT
	349	# define MUTEX_INIT(m)
	350	#endif
	351
	352	#ifndef MUTEX_DESTROY
	353	# define MUTEX_DESTROY(m)
	354	#endif
	355
	356	#ifndef COND_INIT
	357	# define COND_INIT(c)
	358	#endif
	359
	360	#ifndef COND_SIGNAL
	361	# define COND_SIGNAL(c)
	362	#endif
	363
	364	#ifndef COND_BROADCAST
	365	# define COND_BROADCAST(c)
	366	#endif
	367
	368	#ifndef COND_WAIT
	369	# define COND_WAIT(c, m)
	370	#endif
	371
	372	#ifndef COND_DESTROY
	373	# define COND_DESTROY(c)
	374	#endif
	375
	376	#ifndef LOCK_SV_MUTEX
	377	# define LOCK_SV_MUTEX
	378	#endif
	379
	380	#ifndef UNLOCK_SV_MUTEX
	381	# define UNLOCK_SV_MUTEX
	382	#endif
	383
	384	#ifndef LOCK_STRTAB_MUTEX
	385	# define LOCK_STRTAB_MUTEX
	386	#endif
	387
	388	#ifndef UNLOCK_STRTAB_MUTEX
	389	# define UNLOCK_STRTAB_MUTEX
	390	#endif
	391
	392	#ifndef LOCK_CRED_MUTEX
	393	# define LOCK_CRED_MUTEX
	394	#endif
	395
	396	#ifndef UNLOCK_CRED_MUTEX
	397	# define UNLOCK_CRED_MUTEX
	398	#endif
	399
4b19af01 CB	400	#ifndef LOCK_FDPID_MUTEX
	401	# define LOCK_FDPID_MUTEX
	402	#endif
	403
	404	#ifndef UNLOCK_FDPID_MUTEX
	405	# define UNLOCK_FDPID_MUTEX
	406	#endif
	407
	408	#ifndef LOCK_SV_LOCK_MUTEX
	409	# define LOCK_SV_LOCK_MUTEX
	410	#endif
	411
	412	#ifndef UNLOCK_SV_LOCK_MUTEX
	413	# define UNLOCK_SV_LOCK_MUTEX
	414	#endif
	415
ba869deb	416	/* THR, SET_THR, and dTHR are there for compatibility with old versions */
1feb2720	417	#ifndef THR
ba869deb GS	418	# define THR PERL_GET_THX
	419	#endif
	420
	421	#ifndef SET_THR
	422	# define SET_THR(t) PERL_SET_THX(t)
1feb2720 GS	423	#endif
	424
	425	#ifndef dTHR
	426	# define dTHR dNOOP
	427	#endif
	428
	429	#ifndef INIT_THREADS
	430	# define INIT_THREADS NOOP
	431	#endif