433 lines
11 KiB
C
433 lines
11 KiB
C
#if defined(USE_THREADS) || defined(USE_ITHREADS)
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#ifdef WIN32
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# include <win32thread.h>
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#else
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# ifdef OLD_PTHREADS_API /* Here be dragons. */
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# define DETACH(t) \
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STMT_START { \
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if (pthread_detach(&(t)->self)) { \
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MUTEX_UNLOCK(&(t)->mutex); \
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Perl_croak_nocontext("panic: DETACH"); \
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} \
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} STMT_END
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# define PERL_GET_CONTEXT Perl_get_context()
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# define PERL_SET_CONTEXT(t) Perl_set_context((void*)t)
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# define PTHREAD_GETSPECIFIC_INT
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# ifdef DJGPP
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# define pthread_addr_t any_t
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# define NEED_PTHREAD_INIT
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# define PTHREAD_CREATE_JOINABLE (1)
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# endif
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# ifdef __OPEN_VM
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# define pthread_addr_t void *
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# endif
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# ifdef VMS
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# define pthread_attr_init(a) pthread_attr_create(a)
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# define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_setdetach_np(a,s)
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# define PTHREAD_CREATE(t,a,s,d) pthread_create(t,a,s,d)
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# define pthread_key_create(k,d) pthread_keycreate(k,(pthread_destructor_t)(d))
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# define pthread_mutexattr_init(a) pthread_mutexattr_create(a)
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# define pthread_mutexattr_settype(a,t) pthread_mutexattr_setkind_np(a,t)
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# endif
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# if defined(__hpux) && defined(__ux_version) && __ux_version <= 1020
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# define pthread_attr_init(a) pthread_attr_create(a)
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/* XXX pthread_setdetach_np() missing in DCE threads on HP-UX 10.20 */
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# define PTHREAD_ATTR_SETDETACHSTATE(a,s) (0)
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# define PTHREAD_CREATE(t,a,s,d) pthread_create(t,a,s,d)
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# define pthread_key_create(k,d) pthread_keycreate(k,(pthread_destructor_t)(d))
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# define pthread_mutexattr_init(a) pthread_mutexattr_create(a)
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# define pthread_mutexattr_settype(a,t) pthread_mutexattr_setkind_np(a,t)
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# endif
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# if defined(DJGPP) || defined(__OPEN_VM)
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# define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_attr_setdetachstate(a,&(s))
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# define YIELD pthread_yield(NULL)
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# endif
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# endif
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# if !defined(__hpux) || !defined(__ux_version) || __ux_version > 1020
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# define pthread_mutexattr_default NULL
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# define pthread_condattr_default NULL
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# endif
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#endif
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#ifndef PTHREAD_CREATE
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/* You are not supposed to pass NULL as the 2nd arg of PTHREAD_CREATE(). */
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# define PTHREAD_CREATE(t,a,s,d) pthread_create(t,&(a),s,d)
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#endif
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#ifndef PTHREAD_ATTR_SETDETACHSTATE
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# define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_attr_setdetachstate(a,s)
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#endif
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#ifndef PTHREAD_CREATE_JOINABLE
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# ifdef OLD_PTHREAD_CREATE_JOINABLE
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# define PTHREAD_CREATE_JOINABLE OLD_PTHREAD_CREATE_JOINABLE
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# else
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# define PTHREAD_CREATE_JOINABLE 0 /* Panic? No, guess. */
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# endif
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#endif
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#ifdef I_MACH_CTHREADS
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/* cthreads interface */
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/* #include <mach/cthreads.h> is in perl.h #ifdef I_MACH_CTHREADS */
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#define MUTEX_INIT(m) \
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STMT_START { \
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*m = mutex_alloc(); \
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if (*m) { \
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mutex_init(*m); \
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} else { \
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Perl_croak_nocontext("panic: MUTEX_INIT"); \
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} \
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} STMT_END
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#define MUTEX_LOCK(m) mutex_lock(*m)
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#define MUTEX_UNLOCK(m) mutex_unlock(*m)
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#define MUTEX_DESTROY(m) \
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STMT_START { \
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mutex_free(*m); \
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*m = 0; \
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} STMT_END
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#define COND_INIT(c) \
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STMT_START { \
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*c = condition_alloc(); \
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if (*c) { \
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condition_init(*c); \
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} \
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else { \
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Perl_croak_nocontext("panic: COND_INIT"); \
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} \
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} STMT_END
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#define COND_SIGNAL(c) condition_signal(*c)
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#define COND_BROADCAST(c) condition_broadcast(*c)
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#define COND_WAIT(c, m) condition_wait(*c, *m)
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#define COND_DESTROY(c) \
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STMT_START { \
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condition_free(*c); \
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*c = 0; \
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} STMT_END
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#define THREAD_CREATE(thr, f) (thr->self = cthread_fork(f, thr), 0)
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#define THREAD_POST_CREATE(thr)
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#define THREAD_RET_TYPE any_t
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#define THREAD_RET_CAST(x) ((any_t) x)
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#define DETACH(t) cthread_detach(t->self)
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#define JOIN(t, avp) (*(avp) = (AV *)cthread_join(t->self))
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#define PERL_SET_CONTEXT(t) cthread_set_data(cthread_self(), t)
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#define PERL_GET_CONTEXT cthread_data(cthread_self())
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#define INIT_THREADS cthread_init()
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#define YIELD cthread_yield()
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#define ALLOC_THREAD_KEY NOOP
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#define FREE_THREAD_KEY NOOP
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#define SET_THREAD_SELF(thr) (thr->self = cthread_self())
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#endif /* I_MACH_CTHREADS */
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#ifndef YIELD
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# ifdef SCHED_YIELD
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# define YIELD SCHED_YIELD
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# else
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# ifdef HAS_SCHED_YIELD
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# define YIELD sched_yield()
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# else
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# ifdef HAS_PTHREAD_YIELD
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/* pthread_yield(NULL) platforms are expected
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* to have #defined YIELD for themselves. */
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# define YIELD pthread_yield()
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# endif
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# endif
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# endif
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#endif
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#ifdef __hpux
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# define MUTEX_INIT_NEEDS_MUTEX_ZEROED
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#endif
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#ifndef MUTEX_INIT
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# ifdef MUTEX_INIT_NEEDS_MUTEX_ZEROED
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/* Temporary workaround, true bug is deeper. --jhi 1999-02-25 */
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# define MUTEX_INIT(m) \
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STMT_START { \
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Zero((m), 1, perl_mutex); \
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if (pthread_mutex_init((m), pthread_mutexattr_default)) \
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Perl_croak_nocontext("panic: MUTEX_INIT"); \
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} STMT_END
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# else
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# define MUTEX_INIT(m) \
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STMT_START { \
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if (pthread_mutex_init((m), pthread_mutexattr_default)) \
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Perl_croak_nocontext("panic: MUTEX_INIT"); \
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} STMT_END
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# endif
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# define MUTEX_LOCK(m) \
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STMT_START { \
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if (pthread_mutex_lock((m))) \
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Perl_croak_nocontext("panic: MUTEX_LOCK"); \
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} STMT_END
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# define MUTEX_UNLOCK(m) \
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STMT_START { \
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if (pthread_mutex_unlock((m))) \
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Perl_croak_nocontext("panic: MUTEX_UNLOCK"); \
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} STMT_END
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# define MUTEX_DESTROY(m) \
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STMT_START { \
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if (pthread_mutex_destroy((m))) \
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Perl_croak_nocontext("panic: MUTEX_DESTROY"); \
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} STMT_END
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#endif /* MUTEX_INIT */
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#ifndef COND_INIT
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# define COND_INIT(c) \
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STMT_START { \
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if (pthread_cond_init((c), pthread_condattr_default)) \
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Perl_croak_nocontext("panic: COND_INIT"); \
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} STMT_END
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# define COND_SIGNAL(c) \
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STMT_START { \
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if (pthread_cond_signal((c))) \
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Perl_croak_nocontext("panic: COND_SIGNAL"); \
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} STMT_END
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# define COND_BROADCAST(c) \
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STMT_START { \
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if (pthread_cond_broadcast((c))) \
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Perl_croak_nocontext("panic: COND_BROADCAST"); \
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} STMT_END
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# define COND_WAIT(c, m) \
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STMT_START { \
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if (pthread_cond_wait((c), (m))) \
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Perl_croak_nocontext("panic: COND_WAIT"); \
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} STMT_END
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# define COND_DESTROY(c) \
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STMT_START { \
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if (pthread_cond_destroy((c))) \
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Perl_croak_nocontext("panic: COND_DESTROY"); \
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} STMT_END
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#endif /* COND_INIT */
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/* DETACH(t) must only be called while holding t->mutex */
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#ifndef DETACH
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# define DETACH(t) \
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STMT_START { \
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if (pthread_detach((t)->self)) { \
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MUTEX_UNLOCK(&(t)->mutex); \
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Perl_croak_nocontext("panic: DETACH"); \
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} \
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} STMT_END
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#endif /* DETACH */
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#ifndef JOIN
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# define JOIN(t, avp) \
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STMT_START { \
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if (pthread_join((t)->self, (void**)(avp))) \
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Perl_croak_nocontext("panic: pthread_join"); \
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} STMT_END
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#endif /* JOIN */
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#ifndef PERL_GET_CONTEXT
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# define PERL_GET_CONTEXT pthread_getspecific(PL_thr_key)
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#endif
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#ifndef PERL_SET_CONTEXT
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# define PERL_SET_CONTEXT(t) \
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STMT_START { \
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if (pthread_setspecific(PL_thr_key, (void *)(t))) \
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Perl_croak_nocontext("panic: pthread_setspecific"); \
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} STMT_END
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#endif /* PERL_SET_CONTEXT */
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#ifndef INIT_THREADS
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# ifdef NEED_PTHREAD_INIT
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# define INIT_THREADS pthread_init()
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# endif
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#endif
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#ifndef ALLOC_THREAD_KEY
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# define ALLOC_THREAD_KEY \
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STMT_START { \
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if (pthread_key_create(&PL_thr_key, 0)) { \
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PerlIO_printf(PerlIO_stderr(), "panic: pthread_key_create"); \
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exit(1); \
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} \
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} STMT_END
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#endif
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#ifndef FREE_THREAD_KEY
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# define FREE_THREAD_KEY \
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STMT_START { \
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pthread_key_delete(PL_thr_key); \
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} STMT_END
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#endif
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#ifndef THREAD_RET_TYPE
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# define THREAD_RET_TYPE void *
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# define THREAD_RET_CAST(p) ((void *)(p))
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#endif /* THREAD_RET */
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#if defined(USE_THREADS)
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/* Accessor for per-thread SVs */
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# define THREADSV(i) (thr->threadsvp[i])
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/*
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* LOCK_SV_MUTEX and UNLOCK_SV_MUTEX are performance-critical. Here, we
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* try only locking them if there may be more than one thread in existence.
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* Systems with very fast mutexes (and/or slow conditionals) may wish to
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* remove the "if (threadnum) ..." test.
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* XXX do NOT use C<if (PL_threadnum) ...> -- it sets up race conditions!
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*/
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# define LOCK_SV_MUTEX MUTEX_LOCK(&PL_sv_mutex)
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# define UNLOCK_SV_MUTEX MUTEX_UNLOCK(&PL_sv_mutex)
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# define LOCK_STRTAB_MUTEX MUTEX_LOCK(&PL_strtab_mutex)
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# define UNLOCK_STRTAB_MUTEX MUTEX_UNLOCK(&PL_strtab_mutex)
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# define LOCK_CRED_MUTEX MUTEX_LOCK(&PL_cred_mutex)
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# define UNLOCK_CRED_MUTEX MUTEX_UNLOCK(&PL_cred_mutex)
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# define LOCK_FDPID_MUTEX MUTEX_LOCK(&PL_fdpid_mutex)
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# define UNLOCK_FDPID_MUTEX MUTEX_UNLOCK(&PL_fdpid_mutex)
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# define LOCK_SV_LOCK_MUTEX MUTEX_LOCK(&PL_sv_lock_mutex)
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# define UNLOCK_SV_LOCK_MUTEX MUTEX_UNLOCK(&PL_sv_lock_mutex)
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/* Values and macros for thr->flags */
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#define THRf_STATE_MASK 7
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#define THRf_R_JOINABLE 0
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#define THRf_R_JOINED 1
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#define THRf_R_DETACHED 2
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#define THRf_ZOMBIE 3
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#define THRf_DEAD 4
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#define THRf_DID_DIE 8
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/* ThrSTATE(t) and ThrSETSTATE(t) must only be called while holding t->mutex */
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#define ThrSTATE(t) ((t)->flags & THRf_STATE_MASK)
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#define ThrSETSTATE(t, s) STMT_START { \
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(t)->flags &= ~THRf_STATE_MASK; \
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(t)->flags |= (s); \
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DEBUG_S(PerlIO_printf(Perl_debug_log, \
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"thread %p set to state %d\n", (t), (s))); \
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} STMT_END
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typedef struct condpair {
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perl_mutex mutex; /* Protects all other fields */
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perl_cond owner_cond; /* For when owner changes at all */
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perl_cond cond; /* For cond_signal and cond_broadcast */
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Thread owner; /* Currently owning thread */
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} condpair_t;
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#define MgMUTEXP(mg) (&((condpair_t *)(mg->mg_ptr))->mutex)
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#define MgOWNERCONDP(mg) (&((condpair_t *)(mg->mg_ptr))->owner_cond)
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#define MgCONDP(mg) (&((condpair_t *)(mg->mg_ptr))->cond)
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#define MgOWNER(mg) ((condpair_t *)(mg->mg_ptr))->owner
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#endif /* USE_THREADS */
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#endif /* USE_THREADS || USE_ITHREADS */
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#ifndef MUTEX_LOCK
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# define MUTEX_LOCK(m)
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#endif
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#ifndef MUTEX_UNLOCK
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# define MUTEX_UNLOCK(m)
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#endif
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#ifndef MUTEX_INIT
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# define MUTEX_INIT(m)
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#endif
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#ifndef MUTEX_DESTROY
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# define MUTEX_DESTROY(m)
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#endif
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#ifndef COND_INIT
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# define COND_INIT(c)
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#endif
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#ifndef COND_SIGNAL
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# define COND_SIGNAL(c)
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#endif
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#ifndef COND_BROADCAST
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# define COND_BROADCAST(c)
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#endif
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#ifndef COND_WAIT
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# define COND_WAIT(c, m)
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#endif
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#ifndef COND_DESTROY
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# define COND_DESTROY(c)
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#endif
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#ifndef LOCK_SV_MUTEX
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# define LOCK_SV_MUTEX
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#endif
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#ifndef UNLOCK_SV_MUTEX
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# define UNLOCK_SV_MUTEX
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#endif
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#ifndef LOCK_STRTAB_MUTEX
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# define LOCK_STRTAB_MUTEX
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#endif
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#ifndef UNLOCK_STRTAB_MUTEX
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# define UNLOCK_STRTAB_MUTEX
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#endif
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#ifndef LOCK_CRED_MUTEX
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# define LOCK_CRED_MUTEX
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#endif
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#ifndef UNLOCK_CRED_MUTEX
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# define UNLOCK_CRED_MUTEX
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#endif
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#ifndef LOCK_FDPID_MUTEX
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# define LOCK_FDPID_MUTEX
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#endif
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#ifndef UNLOCK_FDPID_MUTEX
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# define UNLOCK_FDPID_MUTEX
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#endif
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#ifndef LOCK_SV_LOCK_MUTEX
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# define LOCK_SV_LOCK_MUTEX
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#endif
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#ifndef UNLOCK_SV_LOCK_MUTEX
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# define UNLOCK_SV_LOCK_MUTEX
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#endif
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/* THR, SET_THR, and dTHR are there for compatibility with old versions */
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#ifndef THR
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# define THR PERL_GET_THX
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#endif
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#ifndef SET_THR
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# define SET_THR(t) PERL_SET_THX(t)
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#endif
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#ifndef dTHR
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# define dTHR dNOOP
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#endif
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#ifndef INIT_THREADS
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# define INIT_THREADS NOOP
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#endif
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