X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=ext%2FThread%2FThread.xs;h=c008160538f57661f513c882939d9e3849e19580;hb=4d1ff10ffec86208b0da135b87c76b89e61c866e;hp=c5adcb3eb76bea01da23e07f534563114edd9bd6;hpb=22239a37ce131e4f5341aee571f08aced283e16a;p=p5sagit%2Fp5-mst-13.2.git diff --git a/ext/Thread/Thread.xs b/ext/Thread/Thread.xs index c5adcb3..c008160 100644 --- a/ext/Thread/Thread.xs +++ b/ext/Thread/Thread.xs @@ -1,3 +1,4 @@ +#define PERL_NO_GET_CONTEXT #include "EXTERN.h" #include "perl.h" #include "XSUB.h" @@ -12,7 +13,6 @@ #endif #include -static U32 threadnum = 0; static int sig_pipe[2]; #ifndef THREAD_RET_TYPE @@ -21,35 +21,36 @@ static int sig_pipe[2]; #endif static void -remove_thread(struct perl_thread *t) +remove_thread(pTHX_ Thread t) { -#ifdef USE_THREADS - DEBUG_L(WITH_THR(PerlIO_printf(PerlIO_stderr(), +#ifdef USE_5005THREADS + DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log, "%p: remove_thread %p\n", thr, t))); - MUTEX_LOCK(&threads_mutex); + MUTEX_LOCK(&PL_threads_mutex); MUTEX_DESTROY(&t->mutex); - nthreads--; + PL_nthreads--; t->prev->next = t->next; t->next->prev = t->prev; - COND_BROADCAST(&nthreads_cond); - MUTEX_UNLOCK(&threads_mutex); + SvREFCNT_dec(t->oursv); + COND_BROADCAST(&PL_nthreads_cond); + MUTEX_UNLOCK(&PL_threads_mutex); #endif } static THREAD_RET_TYPE threadstart(void *arg) { -#ifdef USE_THREADS +#ifdef USE_5005THREADS #ifdef FAKE_THREADS Thread savethread = thr; LOGOP myop; dSP; - I32 oldscope = scopestack_ix; + I32 oldscope = PL_scopestack_ix; I32 retval; AV *av; int i; - DEBUG_L(PerlIO_printf(PerlIO_stderr(), "new thread %p starting at %s\n", + DEBUG_S(PerlIO_printf(Perl_debug_log, "new thread %p starting at %s\n", thr, SvPEEK(TOPs))); thr = (Thread) arg; savemark = TOPMARK; @@ -61,15 +62,15 @@ threadstart(void *arg) thr->private = 0; /* Now duplicate most of perl_call_sv but with a few twists */ - op = (OP*)&myop; - Zero(op, 1, LOGOP); + PL_op = (OP*)&myop; + Zero(PL_op, 1, LOGOP); myop.op_flags = OPf_STACKED; myop.op_next = Nullop; myop.op_flags |= OPf_KNOW; myop.op_flags |= OPf_WANT_LIST; - op = pp_entersub(ARGS); - DEBUG_L(if (!op) - PerlIO_printf(PerlIO_stderr(), "thread starts at Nullop\n")); + PL_op = pp_entersub(ARGS); + DEBUG_S(if (!PL_op) + PerlIO_printf(Perl_debug_log, "thread starts at Nullop\n")); /* * When this thread is next scheduled, we start in the right * place. When the thread runs off the end of the sub, perl.c @@ -80,19 +81,20 @@ threadstart(void *arg) return 0; #else Thread thr = (Thread) arg; - LOGOP myop; - djSP; + dSP; I32 oldmark = TOPMARK; - I32 oldscope = scopestack_ix; I32 retval; SV *sv; - AV *av = newAV(); - int i, ret; - dJMPENV; - DEBUG_L(PerlIO_printf(PerlIO_stderr(), "new thread %p waiting to start\n", + AV *av; + int i; + +#if defined(MULTIPLICITY) + PERL_SET_INTERP(thr->interp); +#endif + + DEBUG_S(PerlIO_printf(Perl_debug_log, "new thread %p waiting to start\n", thr)); - /* Don't call *anything* requiring dTHR until after SET_THR() */ /* * Wait until our creator releases us. If we didn't do this, then * it would be potentially possible for out thread to carry on and @@ -108,81 +110,106 @@ threadstart(void *arg) * from our pthread_t structure to our struct perl_thread, since * we're the only thread who can get at it anyway. */ - SET_THR(thr); + PERL_SET_THX(thr); - /* Only now can we use SvPEEK (which calls sv_newmortal which does dTHR) */ - DEBUG_L(PerlIO_printf(PerlIO_stderr(), "new thread %p starting at %s\n", + DEBUG_S(PerlIO_printf(Perl_debug_log, "new thread %p starting at %s\n", thr, SvPEEK(TOPs))); + av = newAV(); sv = POPs; PUTBACK; + ENTER; + SAVETMPS; perl_call_sv(sv, G_ARRAY|G_EVAL); SPAGAIN; - retval = sp - (stack_base + oldmark); - sp = stack_base + oldmark + 1; + retval = SP - (PL_stack_base + oldmark); + SP = PL_stack_base + oldmark + 1; if (SvCUR(thr->errsv)) { MUTEX_LOCK(&thr->mutex); thr->flags |= THRf_DID_DIE; MUTEX_UNLOCK(&thr->mutex); - av_store(av, 0, &sv_no); + av_store(av, 0, &PL_sv_no); av_store(av, 1, newSVsv(thr->errsv)); - DEBUG_L(PerlIO_printf(PerlIO_stderr(), "%p died: %s\n", - SvPV(thr->errsv, na))); - } else { - DEBUG_L(STMT_START { + DEBUG_S(PerlIO_printf(Perl_debug_log, "%p died: %s\n", + thr, SvPV(thr->errsv, PL_na))); + } + else { + DEBUG_S(STMT_START { for (i = 1; i <= retval; i++) { - PerlIO_printf(PerlIO_stderr(), "%p return[%d] = %s\n", - thr, i, SvPEEK(sp[i - 1])); + PerlIO_printf(Perl_debug_log, "%p return[%d] = %s\n", + thr, i, SvPEEK(SP[i - 1])); } } STMT_END); - av_store(av, 0, &sv_yes); - for (i = 1; i <= retval; i++, sp++) - sv_setsv(*av_fetch(av, i, TRUE), SvREFCNT_inc(*sp)); + av_store(av, 0, &PL_sv_yes); + for (i = 1; i <= retval; i++, SP++) + sv_setsv(*av_fetch(av, i, TRUE), SvREFCNT_inc(*SP)); } + FREETMPS; + LEAVE; - finishoff: #if 0 /* removed for debug */ - SvREFCNT_dec(curstack); + SvREFCNT_dec(PL_curstack); #endif SvREFCNT_dec(thr->cvcache); SvREFCNT_dec(thr->threadsv); SvREFCNT_dec(thr->specific); SvREFCNT_dec(thr->errsv); - SvREFCNT_dec(thr->errhv); - Safefree(markstack); - Safefree(scopestack); - Safefree(savestack); - Safefree(retstack); - Safefree(cxstack); - Safefree(tmps_stack); - Safefree(ofs); + + /*Safefree(cxstack);*/ + while (PL_curstackinfo->si_next) + PL_curstackinfo = PL_curstackinfo->si_next; + while (PL_curstackinfo) { + PERL_SI *p = PL_curstackinfo->si_prev; + SvREFCNT_dec(PL_curstackinfo->si_stack); + Safefree(PL_curstackinfo->si_cxstack); + Safefree(PL_curstackinfo); + PL_curstackinfo = p; + } + Safefree(PL_markstack); + Safefree(PL_scopestack); + Safefree(PL_savestack); + Safefree(PL_retstack); + Safefree(PL_tmps_stack); + SvREFCNT_dec(PL_ofs_sv); + + SvREFCNT_dec(PL_rs); + SvREFCNT_dec(PL_nrs); + SvREFCNT_dec(PL_statname); + SvREFCNT_dec(PL_errors); + Safefree(PL_screamfirst); + Safefree(PL_screamnext); + Safefree(PL_reg_start_tmp); + SvREFCNT_dec(PL_lastscream); + SvREFCNT_dec(PL_defoutgv); + Safefree(PL_reg_poscache); MUTEX_LOCK(&thr->mutex); - DEBUG_L(PerlIO_printf(PerlIO_stderr(), + thr->thr_done = 1; + DEBUG_S(PerlIO_printf(Perl_debug_log, "%p: threadstart finishing: state is %u\n", thr, ThrSTATE(thr))); switch (ThrSTATE(thr)) { case THRf_R_JOINABLE: ThrSETSTATE(thr, THRf_ZOMBIE); MUTEX_UNLOCK(&thr->mutex); - DEBUG_L(PerlIO_printf(PerlIO_stderr(), + DEBUG_S(PerlIO_printf(Perl_debug_log, "%p: R_JOINABLE thread finished\n", thr)); break; case THRf_R_JOINED: ThrSETSTATE(thr, THRf_DEAD); MUTEX_UNLOCK(&thr->mutex); - remove_thread(thr); - DEBUG_L(PerlIO_printf(PerlIO_stderr(), + remove_thread(aTHX_ thr); + DEBUG_S(PerlIO_printf(Perl_debug_log, "%p: R_JOINED thread finished\n", thr)); break; case THRf_R_DETACHED: ThrSETSTATE(thr, THRf_DEAD); MUTEX_UNLOCK(&thr->mutex); SvREFCNT_dec(av); - DEBUG_L(PerlIO_printf(PerlIO_stderr(), + DEBUG_S(PerlIO_printf(Perl_debug_log, "%p: DETACHED thread finished\n", thr)); - remove_thread(thr); /* This might trigger main thread to finish */ + remove_thread(aTHX_ thr); /* This might trigger main thread to finish */ break; default: MUTEX_UNLOCK(&thr->mutex); @@ -199,99 +226,131 @@ threadstart(void *arg) } static SV * -newthread (SV *startsv, AV *initargs, char *classname) +newthread (pTHX_ SV *startsv, AV *initargs, char *classname) { -#ifdef USE_THREADS +#ifdef USE_5005THREADS dSP; Thread savethread; int i; SV *sv; int err; #ifndef THREAD_CREATE + static pthread_attr_t attr; + static int attr_inited = 0; sigset_t fullmask, oldmask; + static int attr_joinable = PTHREAD_CREATE_JOINABLE; #endif - + savethread = thr; thr = new_struct_thread(thr); + /* temporarily pretend to be the child thread in case the + * XPUSHs() below want to grow the child's stack. This is + * safe, since the other thread is not yet created, and we + * are the only ones who know about it */ + PERL_SET_THX(thr); SPAGAIN; - DEBUG_L(PerlIO_printf(PerlIO_stderr(), + DEBUG_S(PerlIO_printf(Perl_debug_log, "%p: newthread (%p), tid is %u, preparing stack\n", savethread, thr, thr->tid)); /* The following pushes the arg list and startsv onto the *new* stack */ - PUSHMARK(sp); + PUSHMARK(SP); /* Could easily speed up the following greatly */ for (i = 0; i <= AvFILL(initargs); i++) XPUSHs(SvREFCNT_inc(*av_fetch(initargs, i, FALSE))); XPUSHs(SvREFCNT_inc(startsv)); PUTBACK; + + /* On your marks... */ + PERL_SET_THX(savethread); + MUTEX_LOCK(&thr->mutex); + #ifdef THREAD_CREATE err = THREAD_CREATE(thr, threadstart); #else - /* On your marks... */ - MUTEX_LOCK(&thr->mutex); /* Get set... */ sigfillset(&fullmask); if (sigprocmask(SIG_SETMASK, &fullmask, &oldmask) == -1) croak("panic: sigprocmask"); -#ifdef PTHREADS_CREATED_JOINABLE - err = pthread_create(&thr->self, pthread_attr_default, - threadstart, (void*) thr); -#else - { - pthread_attr_t attr; - + err = 0; + if (!attr_inited) { + attr_inited = 1; err = pthread_attr_init(&attr); - if (err == 0) { -#ifdef PTHREAD_CREATE_UNDETACHED - err = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_UNDETACHED); -#else - croak("panic: pthread_attr_setdetachstate"); -#endif - if (err == 0) - err = pthread_create(&thr->self, &attr, - threadstart, (void*) thr); - } - pthread_attr_destroy(&attr); +# ifdef THREAD_CREATE_NEEDS_STACK + if (err == 0) + err = pthread_attr_setstacksize(&attr, THREAD_CREATE_NEEDS_STACK); + if (err) + croak("panic: pthread_attr_setstacksize failed"); +# endif +# ifdef PTHREAD_ATTR_SETDETACHSTATE + if (err == 0) + err = PTHREAD_ATTR_SETDETACHSTATE(&attr, attr_joinable); + if (err) + croak("panic: pthread_attr_setdetachstate failed"); +# else + croak("panic: can't pthread_attr_setdetachstate"); +# endif } + if (err == 0) + err = PTHREAD_CREATE(&thr->self, attr, threadstart, (void*) thr); #endif - /* Go */ - MUTEX_UNLOCK(&thr->mutex); -#endif + if (err) { - DEBUG_L(PerlIO_printf(PerlIO_stderr(), - "%p: create of %p failed %d\n", savethread, thr, err)); + MUTEX_UNLOCK(&thr->mutex); + DEBUG_S(PerlIO_printf(Perl_debug_log, + "%p: create of %p failed %d\n", + savethread, thr, err)); /* Thread creation failed--clean up */ SvREFCNT_dec(thr->cvcache); - remove_thread(thr); - MUTEX_DESTROY(&thr->mutex); + remove_thread(aTHX_ thr); for (i = 0; i <= AvFILL(initargs); i++) SvREFCNT_dec(*av_fetch(initargs, i, FALSE)); SvREFCNT_dec(startsv); return NULL; } + #ifdef THREAD_POST_CREATE THREAD_POST_CREATE(thr); #else if (sigprocmask(SIG_SETMASK, &oldmask, 0)) croak("panic: sigprocmask"); #endif + sv = newSViv(thr->tid); sv_magic(sv, thr->oursv, '~', 0, 0); SvMAGIC(sv)->mg_private = Thread_MAGIC_SIGNATURE; - return sv_bless(newRV_noinc(sv), gv_stashpv(classname, TRUE)); + sv = sv_bless(newRV_noinc(sv), gv_stashpv(classname, TRUE)); + + /* Go */ + MUTEX_UNLOCK(&thr->mutex); + + return sv; #else - croak("No threads in this perl"); - return &sv_undef; +# ifdef USE_ITHREADS + croak("This perl was built for \"ithreads\", which currently does not support Thread.pm.\n" + "Run \"perldoc Thread\" for more information"); +# else + croak("This perl was not built with support for 5.005-style threads.\n" + "Run \"perldoc Thread\" for more information"); +# endif + return &PL_sv_undef; #endif } -static Signal_t handle_thread_signal _((int sig)); +static Signal_t handle_thread_signal (int sig); static Signal_t handle_thread_signal(int sig) { - char c = (char) sig; - write(sig_pipe[0], &c, 1); + unsigned char c = (unsigned char) sig; + dTHX; + /* + * We're not really allowed to call fprintf in a signal handler + * so don't be surprised if this isn't robust while debugging + * with -DL. + */ + DEBUG_S(PerlIO_printf(Perl_debug_log, + "handle_thread_signal: got signal %d\n", sig)); + write(sig_pipe[1], &c, 1); } MODULE = Thread PACKAGE = Thread @@ -303,7 +362,7 @@ new(classname, startsv, ...) SV * startsv AV * av = av_make(items - 2, &ST(2)); PPCODE: - XPUSHs(sv_2mortal(newthread(startsv, av, classname))); + XPUSHs(sv_2mortal(newthread(aTHX_ startsv, av, classname))); void join(t) @@ -311,9 +370,11 @@ join(t) AV * av = NO_INIT int i = NO_INIT PPCODE: -#ifdef USE_THREADS - DEBUG_L(PerlIO_printf(PerlIO_stderr(), "%p: joining %p (state %u)\n", - thr, t, ThrSTATE(t));); +#ifdef USE_5005THREADS + if (t == thr) + croak("Attempt to join self"); + DEBUG_S(PerlIO_printf(Perl_debug_log, "%p: joining %p (state %u)\n", + thr, t, ThrSTATE(t))); MUTEX_LOCK(&t->mutex); switch (ThrSTATE(t)) { case THRf_R_JOINABLE: @@ -324,7 +385,7 @@ join(t) case THRf_ZOMBIE: ThrSETSTATE(t, THRf_DEAD); MUTEX_UNLOCK(&t->mutex); - remove_thread(t); + remove_thread(aTHX_ t); break; default: MUTEX_UNLOCK(&t->mutex); @@ -333,13 +394,17 @@ join(t) } JOIN(t, &av); + sv_2mortal((SV*)av); + if (SvTRUE(*av_fetch(av, 0, FALSE))) { /* Could easily speed up the following if necessary */ for (i = 1; i <= AvFILL(av); i++) - XPUSHs(sv_2mortal(*av_fetch(av, i, FALSE))); - } else { - char *mess = SvPV(*av_fetch(av, 1, FALSE), na); - DEBUG_L(PerlIO_printf(PerlIO_stderr(), + XPUSHs(*av_fetch(av, i, FALSE)); + } + else { + STRLEN n_a; + char *mess = SvPV(*av_fetch(av, 1, FALSE), n_a); + DEBUG_S(PerlIO_printf(Perl_debug_log, "%p: join propagating die message: %s\n", thr, mess)); croak(mess); @@ -350,9 +415,9 @@ void detach(t) Thread t CODE: -#ifdef USE_THREADS - DEBUG_L(PerlIO_printf(PerlIO_stderr(), "%p: detaching %p (state %u)\n", - thr, t, ThrSTATE(t));); +#ifdef USE_5005THREADS + DEBUG_S(PerlIO_printf(Perl_debug_log, "%p: detaching %p (state %u)\n", + thr, t, ThrSTATE(t))); MUTEX_LOCK(&t->mutex); switch (ThrSTATE(t)) { case THRf_R_JOINABLE: @@ -366,7 +431,7 @@ detach(t) ThrSETSTATE(t, THRf_DEAD); DETACH(t); MUTEX_UNLOCK(&t->mutex); - remove_thread(t); + remove_thread(aTHX_ t); break; default: MUTEX_UNLOCK(&t->mutex); @@ -380,23 +445,31 @@ equal(t1, t2) Thread t1 Thread t2 PPCODE: - PUSHs((t1 == t2) ? &sv_yes : &sv_no); + PUSHs((t1 == t2) ? &PL_sv_yes : &PL_sv_no); void flags(t) Thread t PPCODE: -#ifdef USE_THREADS +#ifdef USE_5005THREADS PUSHs(sv_2mortal(newSViv(t->flags))); #endif void +done(t) + Thread t + PPCODE: +#ifdef USE_5005THREADS + PUSHs(t->thr_done ? &PL_sv_yes : &PL_sv_no); +#endif + +void self(classname) char * classname PREINIT: SV *sv; PPCODE: -#ifdef USE_THREADS +#ifdef USE_5005THREADS sv = newSViv(thr->tid); sv_magic(sv, thr->oursv, '~', 0, 0); SvMAGIC(sv)->mg_private = Thread_MAGIC_SIGNATURE; @@ -408,7 +481,7 @@ U32 tid(t) Thread t CODE: -#ifdef USE_THREADS +#ifdef USE_5005THREADS MUTEX_LOCK(&t->mutex); RETVAL = t->tid; MUTEX_UNLOCK(&t->mutex); @@ -422,13 +495,13 @@ void DESTROY(t) SV * t PPCODE: - PUSHs(&sv_yes); + PUSHs(t ? &PL_sv_yes : &PL_sv_no); void yield() CODE: { -#ifdef USE_THREADS +#ifdef USE_5005THREADS YIELD; #endif } @@ -438,18 +511,19 @@ cond_wait(sv) SV * sv MAGIC * mg = NO_INIT CODE: -#ifdef USE_THREADS +#ifdef USE_5005THREADS if (SvROK(sv)) sv = SvRV(sv); mg = condpair_magic(sv); - DEBUG_L(PerlIO_printf(PerlIO_stderr(), "%p: cond_wait %p\n", thr, sv)); + DEBUG_S(PerlIO_printf(Perl_debug_log, "%p: cond_wait %p\n", thr, sv)); MUTEX_LOCK(MgMUTEXP(mg)); if (MgOWNER(mg) != thr) { MUTEX_UNLOCK(MgMUTEXP(mg)); croak("cond_wait for lock that we don't own\n"); } MgOWNER(mg) = 0; + COND_SIGNAL(MgOWNERCONDP(mg)); COND_WAIT(MgCONDP(mg), MgMUTEXP(mg)); while (MgOWNER(mg)) COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg)); @@ -462,12 +536,12 @@ cond_signal(sv) SV * sv MAGIC * mg = NO_INIT CODE: -#ifdef USE_THREADS +#ifdef USE_5005THREADS if (SvROK(sv)) sv = SvRV(sv); mg = condpair_magic(sv); - DEBUG_L(PerlIO_printf(PerlIO_stderr(), "%p: cond_signal %p\n",thr,sv)); + DEBUG_S(PerlIO_printf(Perl_debug_log, "%p: cond_signal %p\n",thr,sv)); MUTEX_LOCK(MgMUTEXP(mg)); if (MgOWNER(mg) != thr) { MUTEX_UNLOCK(MgMUTEXP(mg)); @@ -482,12 +556,12 @@ cond_broadcast(sv) SV * sv MAGIC * mg = NO_INIT CODE: -#ifdef USE_THREADS +#ifdef USE_5005THREADS if (SvROK(sv)) sv = SvRV(sv); mg = condpair_magic(sv); - DEBUG_L(PerlIO_printf(PerlIO_stderr(), "%p: cond_broadcast %p\n", + DEBUG_S(PerlIO_printf(Perl_debug_log, "%p: cond_broadcast %p\n", thr, sv)); MUTEX_LOCK(MgMUTEXP(mg)); if (MgOWNER(mg) != thr) { @@ -507,16 +581,16 @@ list(classname) SV ** svp; int n = 0; PPCODE: -#ifdef USE_THREADS +#ifdef USE_5005THREADS av = newAV(); /* * Iterate until we have enough dynamic storage for all threads. * We mustn't do any allocation while holding threads_mutex though. */ - MUTEX_LOCK(&threads_mutex); + MUTEX_LOCK(&PL_threads_mutex); do { - n = nthreads; - MUTEX_UNLOCK(&threads_mutex); + n = PL_nthreads; + MUTEX_UNLOCK(&PL_threads_mutex); if (AvFILL(av) < n - 1) { int i = AvFILL(av); for (i = AvFILL(av); i < n - 1; i++) { @@ -527,9 +601,9 @@ list(classname) } } - MUTEX_LOCK(&threads_mutex); - } while (n < nthreads); - n = nthreads; /* Get the final correct value */ + MUTEX_LOCK(&PL_threads_mutex); + } while (n < PL_nthreads); + n = PL_nthreads; /* Get the final correct value */ /* * At this point, there's enough room to fill in av. @@ -549,11 +623,11 @@ list(classname) svp++; } while (t != thr); /* */ - MUTEX_UNLOCK(&threads_mutex); + MUTEX_UNLOCK(&PL_threads_mutex); /* Truncate any unneeded slots in av */ av_fill(av, n - 1); /* Finally, push all the new objects onto the stack and drop av */ - EXTEND(sp, n); + EXTEND(SP, n); for (svp = AvARRAY(av); n > 0; n--, svp++) PUSHs(*svp); (void)sv_2mortal((SV*)av); @@ -565,33 +639,33 @@ MODULE = Thread PACKAGE = Thread::Signal void kill_sighandler_thread() PPCODE: - write(sig_pipe[0], "\0", 1); - PUSHs(&sv_yes); + write(sig_pipe[1], "\0", 1); + PUSHs(&PL_sv_yes); void init_thread_signals() PPCODE: - sighandlerp = handle_thread_signal; + PL_sighandlerp = handle_thread_signal; if (pipe(sig_pipe) == -1) XSRETURN_UNDEF; - PUSHs(&sv_yes); + PUSHs(&PL_sv_yes); -SV * +void await_signal() PREINIT: - char c; + unsigned char c; SSize_t ret; CODE: do { - ret = read(sig_pipe[1], &c, 1); + ret = read(sig_pipe[0], &c, 1); } while (ret == -1 && errno == EINTR); if (ret == -1) croak("panic: await_signal"); - if (ret == 0) - XSRETURN_UNDEF; - RETVAL = c ? psig_ptr[c] : &sv_no; - OUTPUT: - RETVAL + ST(0) = sv_newmortal(); + if (ret) + sv_setsv(ST(0), c ? PL_psig_ptr[c] : &PL_sv_no); + DEBUG_S(PerlIO_printf(Perl_debug_log, + "await_signal returning %s\n", SvPEEK(ST(0)))); MODULE = Thread PACKAGE = Thread::Specific @@ -599,7 +673,7 @@ void data(classname = "Thread::Specific") char * classname PPCODE: -#ifdef USE_THREADS +#ifdef USE_5005THREADS if (AvFILL(thr->specific) == -1) { GV *gv = gv_fetchpv("Thread::Specific::FIELDS", TRUE, SVt_PVHV); av_store(thr->specific, 0, newRV((SV*)GvHV(gv)));