diff options
Diffstat (limited to 'contrib/perl5/thread.h')
| -rw-r--r-- | contrib/perl5/thread.h | 454 |
1 files changed, 262 insertions, 192 deletions
diff --git a/contrib/perl5/thread.h b/contrib/perl5/thread.h index 089077c..0ea9e74 100644 --- a/contrib/perl5/thread.h +++ b/contrib/perl5/thread.h @@ -1,37 +1,60 @@ -#ifdef USE_THREADS +#if defined(USE_THREADS) || defined(USE_ITHREADS) #ifdef WIN32 # include <win32thread.h> #else - -#ifndef DJGPP -/* 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"); \ - } \ +# 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 -#else -# define pthread_mutexattr_default NULL -# define pthread_condattr_default NULL -#endif /* OLD_PTHREADS_API */ + +# 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 -#ifdef PTHREADS_CREATED_JOINABLE -# define ATTR_JOINABLE PTHREAD_CREATE_JOINABLE -#else -# ifdef PTHREAD_CREATE_UNDETACHED -# define ATTR_JOINABLE PTHREAD_CREATE_UNDETACHED +#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 ATTR_JOINABLE PTHREAD_CREATE_JOINABLE +# define PTHREAD_CREATE_JOINABLE 0 /* Panic? No, guess. */ # endif #endif @@ -41,42 +64,43 @@ /* #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 { \ - croak("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 { \ - croak("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"); \ + } \ + } 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 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) @@ -87,22 +111,28 @@ #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 SET_THREAD_SELF(thr) (thr->self = cthread_self()) #endif /* I_MACH_CTHREADS */ #ifndef YIELD -# ifdef HAS_SCHED_YIELD -# define YIELD sched_yield() +# ifdef SCHED_YIELD +# define YIELD SCHED_YIELD # else -# ifdef HAS_PTHREAD_YIELD -# define YIELD pthread_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 @@ -112,126 +142,130 @@ #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 { \ Zero((m), 1, perl_mutex); \ if (pthread_mutex_init((m), pthread_mutexattr_default)) \ - croak("panic: MUTEX_INIT"); \ + Perl_croak_nocontext("panic: MUTEX_INIT"); \ } STMT_END -#else -#define MUTEX_INIT(m) \ +# 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 -#endif -#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(PL_thr_key, (void *) (t))) \ - croak("panic: pthread_setspecific"); \ - } STMT_END -#endif /* SET_THR */ - -#ifndef THR -# ifdef OLD_PTHREADS_API -struct perl_thread *getTHR _((void)); -# define THR getTHR() -# else -# define THR ((struct perl_thread *) pthread_getspecific(PL_thr_key)) -# endif /* OLD_PTHREADS_API */ -#endif /* THR */ +#ifndef PERL_GET_CONTEXT +# define PERL_GET_CONTEXT pthread_getspecific(PL_thr_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_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)) { \ + fprintf(stderr, "panic: pthread_key_create"); \ + exit(1); \ + } \ + } 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]) +# define THREADSV(i) (thr->threadsvp[i]) /* * LOCK_SV_MUTEX and UNLOCK_SV_MUTEX are performance-critical. Here, we @@ -240,31 +274,12 @@ struct perl_thread *getTHR _((void)); * 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); \ - } STMT_END - -/* Likewise for strtab_mutex */ -#define LOCK_STRTAB_MUTEX \ - STMT_START { \ - MUTEX_LOCK(&PL_strtab_mutex); \ - } STMT_END - -#define UNLOCK_STRTAB_MUTEX \ - STMT_START { \ - MUTEX_UNLOCK(&PL_strtab_mutex); \ - } STMT_END - -#ifndef THREAD_RET_TYPE -# define THREAD_RET_TYPE void * -# define THREAD_RET_CAST(p) ((void *)(p)) -#endif /* THREAD_RET */ +# 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) /* Values and macros for thr->flags */ @@ -282,7 +297,7 @@ struct perl_thread *getTHR _((void)); #define ThrSETSTATE(t, s) STMT_START { \ (t)->flags &= ~THRf_STATE_MASK; \ (t)->flags |= (s); \ - DEBUG_S(PerlIO_printf(PerlIO_stderr(), \ + DEBUG_S(PerlIO_printf(Perl_debug_log, \ "thread %p set to state %d\n", (t), (s))); \ } STMT_END @@ -298,27 +313,82 @@ typedef struct condpair { #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 LOCK_SV_MUTEX -#define UNLOCK_SV_MUTEX -#define LOCK_STRTAB_MUTEX -#define UNLOCK_STRTAB_MUTEX - -#define THR -/* Rats: if dTHR is just blank then the subsequent ";" throws an error */ -#ifdef WIN32 -#define dTHR extern int Perl___notused -#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 + +/* 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 |
