-#ifdef USE_THREADS
+/* thread.h
+ *
+ * Copyright (C) 1999, 2000, 2001, 2002, by Larry Wall and others
+ *
+ * You may distribute under the terms of either the GNU General Public
+ * License or the Artistic License, as specified in the README file.
+ *
+ */
+
+#if defined(USE_ITHREADS)
+
+#if defined(VMS)
+#include <builtins.h>
+#endif
#ifdef WIN32
# include <win32thread.h>
#else
+#ifdef NETWARE
+# include <nw5thread.h>
+#else
# ifdef OLD_PTHREADS_API /* Here be dragons. */
-# define DETACH(t) \
- STMT_START { \
- if (pthread_detach(&(t)->self)) { \
- MUTEX_UNLOCK(&(t)->mutex); \
- Perl_croak(aTHX_ "panic: DETACH"); \
- } \
+# define DETACH(t) \
+ STMT_START { \
+ int _eC_; \
+ if ((_eC_ = pthread_detach(&(t)->self))) { \
+ MUTEX_UNLOCK(&(t)->mutex); \
+ Perl_croak_nocontext("panic: DETACH (%d) [%s:%d]", \
+ _eC_, __FILE__, __LINE__); \
+ } \
} STMT_END
-# define THR getTHR()
-struct perl_thread *getTHR (void);
+
+# 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
# ifdef __OPEN_VM
# define pthread_addr_t void *
# endif
+# ifdef OEMVS
+# define pthread_addr_t void *
+# define pthread_create(t,a,s,d) pthread_create(t,&(a),s,d)
+# define pthread_keycreate pthread_key_create
+# endif
# ifdef VMS
# define pthread_attr_init(a) pthread_attr_create(a)
# define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_setdetach_np(a,s)
# define pthread_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)
+# if defined(__hpux) && defined(__ux_version) && __ux_version <= 1020
+# define pthread_attr_init(a) pthread_attr_create(a)
+ /* XXX pthread_setdetach_np() missing in DCE threads on HP-UX 10.20 */
+# define PTHREAD_ATTR_SETDETACHSTATE(a,s) (0)
+# define PTHREAD_CREATE(t,a,s,d) pthread_create(t,a,s,d)
+# define pthread_key_create(k,d) pthread_keycreate(k,(pthread_destructor_t)(d))
+# define pthread_mutexattr_init(a) pthread_mutexattr_create(a)
+# define pthread_mutexattr_settype(a,t) pthread_mutexattr_setkind_np(a,t)
+# endif
+# if defined(DJGPP) || defined(__OPEN_VM) || defined(OEMVS)
# define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_attr_setdetachstate(a,&(s))
# define YIELD pthread_yield(NULL)
# endif
# endif
-# ifndef VMS
+# if !defined(__hpux) || !defined(__ux_version) || __ux_version > 1020
# define pthread_mutexattr_default NULL
# define pthread_condattr_default NULL
# endif
+#endif /* NETWARE */
#endif
#ifndef PTHREAD_CREATE
# endif
#endif
+#ifdef DGUX
+# define THREAD_CREATE_NEEDS_STACK (32*1024)
+#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(aTHX_ "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(aTHX_ "panic: COND_INIT"); \
- } \
- } STMT_END
+#define MUTEX_INIT(m) \
+ STMT_START { \
+ *m = mutex_alloc(); \
+ if (*m) { \
+ mutex_init(*m); \
+ } else { \
+ Perl_croak_nocontext("panic: MUTEX_INIT [%s:%d]", \
+ __FILE__, __LINE__); \
+ } \
+ } STMT_END
+
+#define MUTEX_LOCK(m) mutex_lock(*m)
+#define MUTEX_UNLOCK(m) mutex_unlock(*m)
+#define MUTEX_DESTROY(m) \
+ STMT_START { \
+ mutex_free(*m); \
+ *m = 0; \
+ } STMT_END
+
+#define COND_INIT(c) \
+ STMT_START { \
+ *c = condition_alloc(); \
+ if (*c) { \
+ condition_init(*c); \
+ } \
+ else { \
+ Perl_croak_nocontext("panic: COND_INIT [%s:%d]", \
+ __FILE__, __LINE__); \
+ } \
+ } STMT_END
#define COND_SIGNAL(c) condition_signal(*c)
#define COND_BROADCAST(c) condition_broadcast(*c)
#define COND_WAIT(c, m) condition_wait(*c, *m)
-#define COND_DESTROY(c) \
- STMT_START { \
- condition_free(*c); \
- *c = 0; \
- } STMT_END
+#define 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 DETACH(t) cthread_detach(t->self)
#define JOIN(t, avp) (*(avp) = (AV *)cthread_join(t->self))
-#define SET_THR(thr) cthread_set_data(cthread_self(), thr)
-#define THR cthread_data(cthread_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
+#define ALLOC_THREAD_KEY NOOP
+#define FREE_THREAD_KEY NOOP
#define SET_THREAD_SELF(thr) (thr->self = cthread_self())
#endif /* I_MACH_CTHREADS */
#endif
#ifndef MUTEX_INIT
-#ifdef MUTEX_INIT_NEEDS_MUTEX_ZEROED
+
+# ifdef MUTEX_INIT_NEEDS_MUTEX_ZEROED
/* Temporary workaround, true bug is deeper. --jhi 1999-02-25 */
-#define MUTEX_INIT(m) \
+# define MUTEX_INIT(m) \
STMT_START { \
+ int _eC_; \
Zero((m), 1, perl_mutex); \
- if (pthread_mutex_init((m), pthread_mutexattr_default)) \
- Perl_croak(aTHX_ "panic: MUTEX_INIT"); \
+ if ((_eC_ = pthread_mutex_init((m), pthread_mutexattr_default))) \
+ Perl_croak_nocontext("panic: MUTEX_INIT (%d) [%s:%d]", \
+ _eC_, __FILE__, __LINE__); \
} STMT_END
-#else
-#define MUTEX_INIT(m) \
+# else
+# define MUTEX_INIT(m) \
STMT_START { \
- if (pthread_mutex_init((m), pthread_mutexattr_default)) \
- Perl_croak(aTHX_ "panic: MUTEX_INIT"); \
- } STMT_END
-#endif
-#define MUTEX_LOCK(m) \
- STMT_START { \
- if (pthread_mutex_lock((m))) \
- Perl_croak(aTHX_ "panic: MUTEX_LOCK"); \
+ int _eC_; \
+ if ((_eC_ = pthread_mutex_init((m), pthread_mutexattr_default))) \
+ Perl_croak_nocontext("panic: MUTEX_INIT (%d) [%s:%d]", \
+ _eC_, __FILE__, __LINE__); \
} STMT_END
-#define MUTEX_UNLOCK(m) \
- STMT_START { \
- if (pthread_mutex_unlock((m))) \
- Perl_croak(aTHX_ "panic: MUTEX_UNLOCK"); \
- } STMT_END
-#define MUTEX_LOCK_NOCONTEXT(m) \
- STMT_START { \
- if (pthread_mutex_lock((m))) \
- Perl_croak_nocontext("panic: MUTEX_LOCK"); \
+# endif
+
+# define MUTEX_LOCK(m) \
+ STMT_START { \
+ int _eC_; \
+ if ((_eC_ = pthread_mutex_lock((m)))) \
+ Perl_croak_nocontext("panic: MUTEX_LOCK (%d) [%s:%d]", \
+ _eC_, __FILE__, __LINE__); \
} STMT_END
-#define MUTEX_UNLOCK_NOCONTEXT(m) \
- STMT_START { \
- if (pthread_mutex_unlock((m))) \
- Perl_croak_nocontext("panic: MUTEX_UNLOCK");\
+
+# define MUTEX_UNLOCK(m) \
+ STMT_START { \
+ int _eC_; \
+ if ((_eC_ = pthread_mutex_unlock((m)))) \
+ Perl_croak_nocontext("panic: MUTEX_UNLOCK (%d) [%s:%d]", \
+ _eC_, __FILE__, __LINE__); \
} STMT_END
-#define MUTEX_DESTROY(m) \
- STMT_START { \
- if (pthread_mutex_destroy((m))) \
- Perl_croak(aTHX_ "panic: MUTEX_DESTROY"); \
+
+# define MUTEX_DESTROY(m) \
+ STMT_START { \
+ int _eC_; \
+ if ((_eC_ = pthread_mutex_destroy((m)))) \
+ Perl_croak_nocontext("panic: MUTEX_DESTROY (%d) [%s:%d]", \
+ _eC_, __FILE__, __LINE__); \
} STMT_END
#endif /* MUTEX_INIT */
#ifndef COND_INIT
-#define COND_INIT(c) \
+# define COND_INIT(c) \
STMT_START { \
- if (pthread_cond_init((c), pthread_condattr_default)) \
- Perl_croak(aTHX_ "panic: COND_INIT"); \
+ int _eC_; \
+ if ((_eC_ = pthread_cond_init((c), pthread_condattr_default))) \
+ Perl_croak_nocontext("panic: COND_INIT (%d) [%s:%d]", \
+ _eC_, __FILE__, __LINE__); \
} STMT_END
-#define COND_SIGNAL(c) \
- STMT_START { \
- if (pthread_cond_signal((c))) \
- Perl_croak(aTHX_ "panic: COND_SIGNAL"); \
+
+# define COND_SIGNAL(c) \
+ STMT_START { \
+ int _eC_; \
+ if ((_eC_ = pthread_cond_signal((c)))) \
+ Perl_croak_nocontext("panic: COND_SIGNAL (%d) [%s:%d]", \
+ _eC_, __FILE__, __LINE__); \
} STMT_END
-#define COND_BROADCAST(c) \
- STMT_START { \
- if (pthread_cond_broadcast((c))) \
- Perl_croak(aTHX_ "panic: COND_BROADCAST"); \
+
+# define COND_BROADCAST(c) \
+ STMT_START { \
+ int _eC_; \
+ if ((_eC_ = pthread_cond_broadcast((c)))) \
+ Perl_croak_nocontext("panic: COND_BROADCAST (%d) [%s:%d]", \
+ _eC_, __FILE__, __LINE__); \
} STMT_END
-#define COND_WAIT(c, m) \
- STMT_START { \
- if (pthread_cond_wait((c), (m))) \
- Perl_croak(aTHX_ "panic: COND_WAIT"); \
+
+# define COND_WAIT(c, m) \
+ STMT_START { \
+ int _eC_; \
+ if ((_eC_ = pthread_cond_wait((c), (m)))) \
+ Perl_croak_nocontext("panic: COND_WAIT (%d) [%s:%d]", \
+ _eC_, __FILE__, __LINE__); \
} STMT_END
-#define COND_DESTROY(c) \
- STMT_START { \
- if (pthread_cond_destroy((c))) \
- Perl_croak(aTHX_ "panic: COND_DESTROY"); \
+
+# define COND_DESTROY(c) \
+ STMT_START { \
+ int _eC_; \
+ if ((_eC_ = pthread_cond_destroy((c)))) \
+ Perl_croak_nocontext("panic: COND_DESTROY (%d) [%s:%d]", \
+ _eC_, __FILE__, __LINE__); \
} STMT_END
#endif /* COND_INIT */
/* DETACH(t) must only be called while holding t->mutex */
#ifndef DETACH
-#define DETACH(t) \
- STMT_START { \
- if (pthread_detach((t)->self)) { \
- MUTEX_UNLOCK(&(t)->mutex); \
- Perl_croak(aTHX_ "panic: DETACH"); \
- } \
+# define DETACH(t) \
+ STMT_START { \
+ int _eC_; \
+ if ((_eC_ = pthread_detach((t)->self))) { \
+ MUTEX_UNLOCK(&(t)->mutex); \
+ Perl_croak_nocontext("panic: DETACH (%d) [%s:%d]", \
+ _eC_, __FILE__, __LINE__); \
+ } \
} STMT_END
#endif /* DETACH */
#ifndef JOIN
-#define JOIN(t, avp) \
- STMT_START { \
- if (pthread_join((t)->self, (void**)(avp))) \
- Perl_croak(aTHX_ "panic: pthread_join"); \
+# define JOIN(t, avp) \
+ STMT_START { \
+ int _eC_; \
+ if ((_eC_ = pthread_join((t)->self, (void**)(avp)))) \
+ Perl_croak_nocontext("panic: pthread_join (%d) [%s:%d]", \
+ _eC_, __FILE__, __LINE__); \
} STMT_END
#endif /* JOIN */
-#ifndef SET_THR
-#define SET_THR(t) \
- STMT_START { \
- if (pthread_setspecific(PL_thr_key, (void *) (t))) \
- Perl_croak(aTHX_ "panic: pthread_setspecific"); \
- } STMT_END
-#endif /* SET_THR */
+/* Use an unchecked fetch of thread-specific data instead of a checked one.
+ * It would fail if the key were bogus, but if the key were bogus then
+ * Really Bad Things would be happening anyway. --dan */
+#if (defined(__ALPHA) && (__VMS_VER >= 70000000)) || \
+ (defined(__alpha) && defined(__osf__) && !defined(__GNUC__)) /* Available only on >= 4.0 */
+# define HAS_PTHREAD_UNCHECKED_GETSPECIFIC_NP /* Configure test needed */
+#endif
-#ifndef THR
-#define THR ((struct perl_thread *) pthread_getspecific(PL_thr_key))
+#ifdef HAS_PTHREAD_UNCHECKED_GETSPECIFIC_NP
+# define PTHREAD_GETSPECIFIC(key) pthread_unchecked_getspecific_np(key)
+#else
+# define PTHREAD_GETSPECIFIC(key) pthread_getspecific(key)
#endif
-/*
- * dTHR is performance-critical. Here, we only do the pthread_get_specific
- * if there may be more than one thread in existence, otherwise we get thr
- * from thrsv which is cached in the per-interpreter structure.
- * Systems with very fast pthread_get_specific (which should be all systems
- * but unfortunately isn't) may wish to simplify to "...*thr = THR".
- *
- * The use of PL_threadnum should be safe here.
- */
-#ifndef dTHR
-# define dTHR \
- struct perl_thread *thr = PL_threadnum? THR : (struct perl_thread*)SvPVX(PL_thrsv)
-#endif /* dTHR */
+#ifndef PERL_GET_CONTEXT
+# define PERL_GET_CONTEXT PTHREAD_GETSPECIFIC(PL_thr_key)
+#endif
+
+#ifndef PERL_SET_CONTEXT
+# define PERL_SET_CONTEXT(t) \
+ STMT_START { \
+ int _eC_; \
+ if ((_eC_ = pthread_setspecific(PL_thr_key, (void *)(t)))) \
+ Perl_croak_nocontext("panic: pthread_setspecific (%d) [%s:%d]", \
+ _eC_, __FILE__, __LINE__); \
+ } STMT_END
+#endif /* PERL_SET_CONTEXT */
#ifndef INIT_THREADS
# ifdef NEED_PTHREAD_INIT
# define INIT_THREADS pthread_init()
-# else
-# define INIT_THREADS NOOP
# endif
#endif
-/* 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 \
- STMT_START { \
- MUTEX_LOCK(&PL_sv_mutex); \
- } STMT_END
-
-#define UNLOCK_SV_MUTEX \
- STMT_START { \
- MUTEX_UNLOCK(&PL_sv_mutex); \
+#ifndef ALLOC_THREAD_KEY
+# define ALLOC_THREAD_KEY \
+ STMT_START { \
+ int _eC_; \
+ if ((_eC_ = pthread_key_create(&PL_thr_key, 0))) { \
+ PerlIO_printf(PerlIO_stderr(), "panic: pthread_key_create (%d) [%s:%d]", \
+ _eC_, __FILE__, __LINE__); \
+ exit(1); \
+ } \
} STMT_END
+#endif
-/* Likewise for strtab_mutex */
-#define LOCK_STRTAB_MUTEX \
- STMT_START { \
- MUTEX_LOCK(&PL_strtab_mutex); \
+#ifndef FREE_THREAD_KEY
+# define FREE_THREAD_KEY \
+ STMT_START { \
+ pthread_key_delete(PL_thr_key); \
} STMT_END
+#endif
-#define UNLOCK_STRTAB_MUTEX \
- STMT_START { \
- MUTEX_UNLOCK(&PL_strtab_mutex); \
- } STMT_END
+#ifndef PTHREAD_ATFORK
+# ifdef HAS_PTHREAD_ATFORK
+# define PTHREAD_ATFORK(prepare,parent,child) \
+ pthread_atfork(prepare,parent,child)
+# else
+# define PTHREAD_ATFORK(prepare,parent,child) \
+ NOOP
+# endif
+#endif
#ifndef THREAD_RET_TYPE
# define THREAD_RET_TYPE void *
# define THREAD_RET_CAST(p) ((void *)(p))
#endif /* THREAD_RET */
+# define LOCK_DOLLARZERO_MUTEX MUTEX_LOCK(&PL_dollarzero_mutex)
+# define UNLOCK_DOLLARZERO_MUTEX MUTEX_UNLOCK(&PL_dollarzero_mutex)
-/* 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
+#endif /* USE_ITHREADS */
-#define THRf_DID_DIE 8
+#ifndef MUTEX_LOCK
+# define MUTEX_LOCK(m)
+#endif
-/* 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(PerlIO_stderr(), \
- "thread %p set to state %d\n", (t), (s))); \
- } STMT_END
+#ifndef MUTEX_UNLOCK
+# define MUTEX_UNLOCK(m)
+#endif
-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;
+#ifndef MUTEX_INIT
+# define MUTEX_INIT(m)
+#endif
-#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
+#ifndef MUTEX_DESTROY
+# define MUTEX_DESTROY(m)
+#endif
-#else
-/* USE_THREADS is not defined */
-#define MUTEX_LOCK(m)
-#define MUTEX_LOCK_NOCONTEXT(m)
-#define MUTEX_UNLOCK(m)
-#define MUTEX_UNLOCK_NOCONTEXT(m)
-#define MUTEX_INIT(m)
-#define MUTEX_DESTROY(m)
-#define COND_INIT(c)
-#define COND_SIGNAL(c)
-#define COND_BROADCAST(c)
-#define COND_WAIT(c, m)
-#define COND_DESTROY(c)
-#define LOCK_SV_MUTEX
-#define UNLOCK_SV_MUTEX
-#define LOCK_STRTAB_MUTEX
-#define UNLOCK_STRTAB_MUTEX
-
-#define THR
-#define dTHR dNOOP
-#endif /* USE_THREADS */
+#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
+
+#ifndef LOCK_DOLLARZERO_MUTEX
+# define LOCK_DOLLARZERO_MUTEX
+#endif
+
+#ifndef UNLOCK_DOLLARZERO_MUTEX
+# define UNLOCK_DOLLARZERO_MUTEX
+#endif
+
+/* THR, SET_THR, and dTHR are there for compatibility with old versions */
+#ifndef THR
+# define THR PERL_GET_THX
+#endif
+
+#ifndef SET_THR
+# define SET_THR(t) PERL_SET_THX(t)
+#endif
+
+#ifndef dTHR
+# define dTHR dNOOP
+#endif
+
+#ifndef INIT_THREADS
+# define INIT_THREADS NOOP
+#endif