-#ifdef USE_THREADS
+#if defined(USE_THREADS) || defined(USE_ITHREADS)
+
+#if defined(VMS)
+#include <builtins.h>
+#endif
#ifdef WIN32
# include <win32thread.h>
#else
-
-/* POSIXish threads */
-#ifdef OLD_PTHREADS_API
-# define pthread_mutexattr_init(a) pthread_mutexattr_create(a)
-# define pthread_mutexattr_settype(a,t) pthread_mutexattr_setkind_np(a,t)
-# define pthread_key_create(k,d) pthread_keycreate(k,(pthread_destructor_t)(d))
-# define YIELD pthread_yield()
-# define DETACH(t) \
- STMT_START { \
- if (pthread_detach(&(t)->self)) { \
- MUTEX_UNLOCK(&(t)->mutex); \
- croak("panic: DETACH"); \
- } \
- } STMT_END
+#ifdef NETWARE
+# include <nw5thread.h>
#else
-# define pthread_mutexattr_default NULL
-# define pthread_condattr_default NULL
-# define pthread_attr_default NULL
-#endif /* OLD_PTHREADS_API */
+# 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 /* NETWARE */
#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 DGUX
+# define THREAD_CREATE_NEEDS_STACK (16*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_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 HAS_PTHREAD_YIELD
-# define YIELD pthread_yield()
+# ifdef SCHED_YIELD
+# define YIELD SCHED_YIELD
# else
-# define YIELD sched_yield()
+# 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
-#define MUTEX_INIT(m) \
+
+# 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)) \
- croak("panic: MUTEX_INIT"); \
+ Perl_croak_nocontext("panic: MUTEX_INIT"); \
} STMT_END
-#define MUTEX_LOCK(m) \
- STMT_START { \
- if (pthread_mutex_lock((m))) \
- croak("panic: MUTEX_LOCK"); \
+# 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))) \
- croak("panic: MUTEX_UNLOCK"); \
+
+# 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))) \
- croak("panic: MUTEX_DESTROY"); \
+
+# 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) \
+# define COND_INIT(c) \
STMT_START { \
if (pthread_cond_init((c), pthread_condattr_default)) \
- croak("panic: COND_INIT"); \
+ Perl_croak_nocontext("panic: COND_INIT"); \
} STMT_END
-#define COND_SIGNAL(c) \
- STMT_START { \
- if (pthread_cond_signal((c))) \
- croak("panic: COND_SIGNAL"); \
+
+# 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))) \
- croak("panic: COND_BROADCAST"); \
+
+# 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))) \
- croak("panic: COND_WAIT"); \
+
+# 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))) \
- croak("panic: COND_DESTROY"); \
+
+# 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); \
- croak("panic: 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))) \
- croak("panic: pthread_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 SET_THR
-#define SET_THR(t) \
- STMT_START { \
- if (pthread_setspecific(thr_key, (void *) (t))) \
- croak("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__)) /* Available only on >= 4.0 */
+# define HAS_PTHREAD_UNCHECKED_GETSPECIFIC_NP /* Configure test needed */
+#endif
-#ifndef THR
-# ifdef OLD_PTHREADS_API
-struct perl_thread *getTHR _((void));
-# define THR getTHR()
-# else
-# define THR ((struct perl_thread *) pthread_getspecific(thr_key))
-# endif /* OLD_PTHREADS_API */
-#endif /* THR */
+#ifdef HAS_PTHREAD_UNCHECKED_GETSPECIFIC_NP
+# define PTHREAD_GETSPECIFIC(key) pthread_unchecked_getspecific_np(key)
+#else
+# define PTHREAD_GETSPECIFIC(key) pthread_getspecific(key)
+#endif
-#ifndef dTHR
-# define dTHR struct perl_thread *thr = THR
-#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 { \
+ 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()
-# else
-# define INIT_THREADS NOOP
# 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 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 */
+#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 ThrSETSTATE(t, s) STMT_START { \
(t)->flags &= ~THRf_STATE_MASK; \
(t)->flags |= (s); \
- DEBUG_L(PerlIO_printf(PerlIO_stderr(), \
+ DEBUG_S(PerlIO_printf(Perl_debug_log, \
"thread %p set to state %d\n", (t), (s))); \
} STMT_END
#define MgCONDP(mg) (&((condpair_t *)(mg->mg_ptr))->cond)
#define MgOWNER(mg) ((condpair_t *)(mg->mg_ptr))->owner
-#else
-/* USE_THREADS is not defined */
-#define MUTEX_LOCK(m)
-#define MUTEX_UNLOCK(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 THR
-/* Rats: if dTHR is just blank then the subsequent ";" throws an error */
-#ifdef WIN32
-#define dTHR
-#else
-#define dTHR extern int errno
-#endif
#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