+#define PERL_NO_GET_CONTEXT
+#include "EXTERN.h"
+#include "perl.h"
+#include "XSUB.h"
-#include "threads.h"
+#ifdef USE_ITHREADS
+#ifdef WIN32
+#include <windows.h>
+#include <win32thread.h>
+#else
+#ifdef OS2
+typedef perl_os_thread pthread_t;
+#else
+#include <pthread.h>
+#endif
+#include <thread.h>
+#define PERL_THREAD_SETSPECIFIC(k,v) pthread_setspecific(k,v)
+#ifdef OLD_PTHREADS_API
+#define PERL_THREAD_DETACH(t) pthread_detach(&(t))
+#else
+#define PERL_THREAD_DETACH(t) pthread_detach((t))
+#endif /* OLD_PTHREADS_API */
+#endif
+
+
+
+
+/* Values for 'state' member */
+#define PERL_ITHR_JOINABLE 0
+#define PERL_ITHR_DETACHED 1
+#define PERL_ITHR_FINISHED 4
+#define PERL_ITHR_JOINED 2
+
+typedef struct ithread_s {
+ struct ithread_s *next; /* Next thread in the list */
+ struct ithread_s *prev; /* Prev thread in the list */
+ PerlInterpreter *interp; /* The threads interpreter */
+ I32 tid; /* Threads module's thread id */
+ perl_mutex mutex; /* Mutex for updating things in this struct */
+ I32 count; /* How many SVs have a reference to us */
+ signed char state; /* Are we detached ? */
+ int gimme; /* Context of create */
+ SV* init_function; /* Code to run */
+ SV* params; /* Args to pass function */
+#ifdef WIN32
+ DWORD thr; /* OS's idea if thread id */
+ HANDLE handle; /* OS's waitable handle */
+#else
+ pthread_t thr; /* OS's handle for the thread */
+#endif
+} ithread;
+
+#define MY_CXT_KEY "threads::_guts" XS_VERSION
+
+typedef struct {
+ ithread *thread;
+} my_cxt_t;
+
+START_MY_CXT
+
+
+ithread *threads;
+
+/* Macros to supply the aTHX_ in an embed.h like manner */
+#define ithread_join(thread) Perl_ithread_join(aTHX_ thread)
+#define ithread_DESTROY(thread) Perl_ithread_DESTROY(aTHX_ thread)
+#define ithread_CLONE(thread) Perl_ithread_CLONE(aTHX_ thread)
+#define ithread_detach(thread) Perl_ithread_detach(aTHX_ thread)
+#define ithread_tid(thread) ((thread)->tid)
+#define ithread_yield(thread) (YIELD);
+
+static perl_mutex create_destruct_mutex; /* protects the creation and destruction of threads*/
+
+I32 tid_counter = 0;
+I32 known_threads = 0;
+I32 active_threads = 0;
+
+
+void Perl_ithread_set (pTHX_ ithread* thread)
+{
+ dMY_CXT;
+ MY_CXT.thread = thread;
+}
+
+ithread* Perl_ithread_get (pTHX) {
+ dMY_CXT;
+ return MY_CXT.thread;
+}
+
+
+/* free any data (such as the perl interpreter) attached to an
+ * ithread structure. This is a bit like undef on SVs, where the SV
+ * isn't freed, but the PVX is.
+ * Must be called with thread->mutex already held
+ */
+
+static void
+S_ithread_clear(pTHX_ ithread* thread)
+{
+ PerlInterpreter *interp;
+ assert(thread->state & PERL_ITHR_FINISHED &&
+ (thread->state & PERL_ITHR_DETACHED ||
+ thread->state & PERL_ITHR_JOINED));
+
+ interp = thread->interp;
+ if (interp) {
+ dTHXa(interp);
+ ithread* current_thread;
+#ifdef OEMVS
+ void *ptr;
+#endif
+ PERL_SET_CONTEXT(interp);
+ current_thread = Perl_ithread_get(aTHX);
+ Perl_ithread_set(aTHX_ thread);
+
+ SvREFCNT_dec(thread->params);
+
+ thread->params = Nullsv;
+ perl_destruct(interp);
+ thread->interp = NULL;
+ }
+ if (interp)
+ perl_free(interp);
+ PERL_SET_CONTEXT(aTHX);
+}
+
+
+/*
+ * free an ithread structure and any attached data if its count == 0
+ */
+void
+Perl_ithread_destruct (pTHX_ ithread* thread, const char *why)
+{
+ MUTEX_LOCK(&thread->mutex);
+ if (!thread->next) {
+ MUTEX_UNLOCK(&thread->mutex);
+ Perl_croak(aTHX_ "panic: destruct destroyed thread %p (%s)",thread, why);
+ }
+ if (thread->count != 0) {
+ MUTEX_UNLOCK(&thread->mutex);
+ return;
+ }
+ MUTEX_LOCK(&create_destruct_mutex);
+ /* Remove from circular list of threads */
+ if (thread->next == thread) {
+ /* last one should never get here ? */
+ threads = NULL;
+ }
+ else {
+ thread->next->prev = thread->prev;
+ thread->prev->next = thread->next;
+ if (threads == thread) {
+ threads = thread->next;
+ }
+ thread->next = NULL;
+ thread->prev = NULL;
+ }
+ known_threads--;
+ assert( known_threads >= 0 );
+#if 0
+ Perl_warn(aTHX_ "destruct %d @ %p by %p now %d",
+ thread->tid,thread->interp,aTHX, known_threads);
+#endif
+ MUTEX_UNLOCK(&create_destruct_mutex);
+ /* Thread is now disowned */
+
+ S_ithread_clear(aTHX_ thread);
+ MUTEX_UNLOCK(&thread->mutex);
+ MUTEX_DESTROY(&thread->mutex);
+#ifdef WIN32
+ if (thread->handle)
+ CloseHandle(thread->handle);
+ thread->handle = 0;
+#endif
+ PerlMemShared_free(thread);
+}
+
+int
+Perl_ithread_hook(pTHX)
+{
+ int veto_cleanup = 0;
+ MUTEX_LOCK(&create_destruct_mutex);
+ if (aTHX == PL_curinterp && active_threads != 1) {
+ if (ckWARN_d(WARN_THREADS))
+ Perl_warn(aTHX_ "A thread exited while %" IVdf " threads were running",
+ (IV)active_threads);
+ veto_cleanup = 1;
+ }
+ MUTEX_UNLOCK(&create_destruct_mutex);
+ return veto_cleanup;
+}
+
+void
+Perl_ithread_detach(pTHX_ ithread *thread)
+{
+ MUTEX_LOCK(&thread->mutex);
+ if (!(thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED))) {
+ thread->state |= PERL_ITHR_DETACHED;
+#ifdef WIN32
+ CloseHandle(thread->handle);
+ thread->handle = 0;
+#else
+ PERL_THREAD_DETACH(thread->thr);
+#endif
+ }
+ if ((thread->state & PERL_ITHR_FINISHED) &&
+ (thread->state & PERL_ITHR_DETACHED)) {
+ MUTEX_UNLOCK(&thread->mutex);
+ Perl_ithread_destruct(aTHX_ thread, "detach");
+ }
+ else {
+ MUTEX_UNLOCK(&thread->mutex);
+ }
+}
+
+/* MAGIC (in mg.h sense) hooks */
+
+int
+ithread_mg_get(pTHX_ SV *sv, MAGIC *mg)
+{
+ ithread *thread = (ithread *) mg->mg_ptr;
+ SvIV_set(sv, PTR2IV(thread));
+ SvIOK_on(sv);
+ return 0;
+}
+int
+ithread_mg_free(pTHX_ SV *sv, MAGIC *mg)
+{
+ ithread *thread = (ithread *) mg->mg_ptr;
+ MUTEX_LOCK(&thread->mutex);
+ thread->count--;
+ if (thread->count == 0) {
+ if(thread->state & PERL_ITHR_FINISHED &&
+ (thread->state & PERL_ITHR_DETACHED ||
+ thread->state & PERL_ITHR_JOINED))
+ {
+ MUTEX_UNLOCK(&thread->mutex);
+ Perl_ithread_destruct(aTHX_ thread, "no reference");
+ }
+ else {
+ MUTEX_UNLOCK(&thread->mutex);
+ }
+ }
+ else {
+ MUTEX_UNLOCK(&thread->mutex);
+ }
+ return 0;
+}
+int
+ithread_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *param)
+{
+ ithread *thread = (ithread *) mg->mg_ptr;
+ MUTEX_LOCK(&thread->mutex);
+ thread->count++;
+ MUTEX_UNLOCK(&thread->mutex);
+ return 0;
+}
+
+MGVTBL ithread_vtbl = {
+ ithread_mg_get, /* get */
+ 0, /* set */
+ 0, /* len */
+ 0, /* clear */
+ ithread_mg_free, /* free */
+ 0, /* copy */
+ ithread_mg_dup /* dup */
+};
/*
- Starts executing the thread. Needs to clean up memory a tad better.
-*/
+ * Starts executing the thread. Needs to clean up memory a tad better.
+ * Passed as the C level function to run in the new thread
+ */
#ifdef WIN32
-THREAD_RET_TYPE Perl_thread_run(LPVOID arg) {
+THREAD_RET_TYPE
+Perl_ithread_run(LPVOID arg) {
#else
-void Perl_thread_run(void * arg) {
+void*
+Perl_ithread_run(void * arg) {
#endif
ithread* thread = (ithread*) arg;
- SV* thread_tid_ptr;
- SV* thread_ptr;
dTHXa(thread->interp);
PERL_SET_CONTEXT(thread->interp);
+ Perl_ithread_set(aTHX_ thread);
+#if 0
+ /* Far from clear messing with ->thr child-side is a good idea */
+ MUTEX_LOCK(&thread->mutex);
#ifdef WIN32
thread->thr = GetCurrentThreadId();
#else
thread->thr = pthread_self();
#endif
+ MUTEX_UNLOCK(&thread->mutex);
+#endif
- SHAREDSvLOCK(threads);
- SHAREDSvEDIT(threads);
- thread_tid_ptr = Perl_newSViv(PL_sharedsv_space, (IV) thread->thr);
- thread_ptr = Perl_newSViv(PL_sharedsv_space, (IV) thread);
- hv_store_ent((HV*)SHAREDSvGET(threads), thread_tid_ptr, thread_ptr,0);
- SvREFCNT_dec(thread_tid_ptr);
- SHAREDSvRELEASE(threads);
- SHAREDSvUNLOCK(threads);
PL_perl_destruct_level = 2;
{
-
- AV* params;
- I32 len;
+ AV* params = (AV*) SvRV(thread->params);
+ I32 len = av_len(params)+1;
int i;
dSP;
- params = (AV*) SvRV(thread->params);
- len = av_len(params);
ENTER;
SAVETMPS;
PUSHMARK(SP);
- if(len > -1) {
- for(i = 0; i < len + 1; i++) {
- XPUSHs(av_shift(params));
- }
+ for(i = 0; i < len; i++) {
+ XPUSHs(av_shift(params));
}
PUTBACK;
- call_sv(thread->init_function, G_DISCARD);
+ len = call_sv(thread->init_function, thread->gimme|G_EVAL);
+
+ SPAGAIN;
+ for (i=len-1; i >= 0; i--) {
+ SV *sv = POPs;
+ av_store(params, i, SvREFCNT_inc(sv));
+ }
+ if (SvTRUE(ERRSV) && ckWARN_d(WARN_THREADS)) {
+ Perl_warn(aTHX_ "thread failed to start: %" SVf, ERRSV);
+ }
FREETMPS;
LEAVE;
-
-
+ SvREFCNT_dec(thread->init_function);
}
-
-
+ PerlIO_flush((PerlIO*)NULL);
MUTEX_LOCK(&thread->mutex);
- perl_destruct(thread->interp);
- perl_free(thread->interp);
- if(thread->detached == 1) {
+ thread->state |= PERL_ITHR_FINISHED;
+
+ if (thread->state & PERL_ITHR_DETACHED) {
MUTEX_UNLOCK(&thread->mutex);
- Perl_thread_destruct(thread);
+ Perl_ithread_destruct(aTHX_ thread, "detached finish");
} else {
- MUTEX_UNLOCK(&thread->mutex);
- }
+ MUTEX_UNLOCK(&thread->mutex);
+ }
+ MUTEX_LOCK(&create_destruct_mutex);
+ active_threads--;
+ assert( active_threads >= 0 );
+ MUTEX_UNLOCK(&create_destruct_mutex);
+
#ifdef WIN32
return (DWORD)0;
+#else
+ return 0;
#endif
-
}
+SV *
+ithread_to_SV(pTHX_ SV *obj, ithread *thread, char *classname, bool inc)
+{
+ SV *sv;
+ MAGIC *mg;
+ if (inc) {
+ MUTEX_LOCK(&thread->mutex);
+ thread->count++;
+ MUTEX_UNLOCK(&thread->mutex);
+ }
+ if (!obj)
+ obj = newSV(0);
+ sv = newSVrv(obj,classname);
+ sv_setiv(sv,PTR2IV(thread));
+ mg = sv_magicext(sv,Nullsv,PERL_MAGIC_shared_scalar,&ithread_vtbl,(char *)thread,0);
+ mg->mg_flags |= MGf_DUP;
+ SvREADONLY_on(sv);
+ return obj;
+}
+ithread *
+SV_to_ithread(pTHX_ SV *sv)
+{
+ if (SvROK(sv))
+ {
+ return INT2PTR(ithread*, SvIV(SvRV(sv)));
+ }
+ else
+ {
+ return Perl_ithread_get(aTHX);
+ }
+}
/*
- iThread->create();
-*/
-
-SV* Perl_thread_create(char* class, SV* init_function, SV* params) {
- ithread* thread = malloc(sizeof(ithread));
- SV* obj_ref;
- SV* obj;
- SV* temp_store;
- I32 result;
- PerlInterpreter *current_perl;
-
- MUTEX_LOCK(&create_mutex);
- obj_ref = newSViv(0);
- obj = newSVrv(obj_ref, class);
- sv_setiv(obj, (IV)thread);
- SvREADONLY_on(obj);
+ * ithread->create(); ( aka ithread->new() )
+ * Called in context of parent thread
+ */
+SV *
+Perl_ithread_create(pTHX_ SV *obj, char* classname, SV* init_function, SV* params)
+{
+ ithread* thread;
+ CLONE_PARAMS clone_param;
+ ithread* current_thread = Perl_ithread_get(aTHX);
+
+ SV** tmps_tmp = PL_tmps_stack;
+ I32 tmps_ix = PL_tmps_ix;
+#ifndef WIN32
+ int failure;
+ const char* panic = NULL;
+#endif
- current_perl = PERL_GET_CONTEXT;
- /*
- here we put the values of params and function to call onto namespace, this is so perl will properly clone them when we call perl_clone.
- */
-
+ MUTEX_LOCK(&create_destruct_mutex);
+ thread = (ithread *) PerlMemShared_malloc(sizeof(ithread));
+ if (!thread) {
+ MUTEX_UNLOCK(&create_destruct_mutex);
+ PerlLIO_write(PerlIO_fileno(Perl_error_log),
+ PL_no_mem, strlen(PL_no_mem));
+ my_exit(1);
+ }
+ Zero(thread,1,ithread);
+ thread->next = threads;
+ thread->prev = threads->prev;
+ threads->prev = thread;
+ thread->prev->next = thread;
+ /* Set count to 1 immediately in case thread exits before
+ * we return to caller !
+ */
+ thread->count = 1;
+ MUTEX_INIT(&thread->mutex);
+ thread->tid = tid_counter++;
+ thread->gimme = GIMME_V;
+ /* "Clone" our interpreter into the thread's interpreter
+ * This gives thread access to "static data" and code.
+ */
- temp_store = Perl_get_sv(current_perl, "threads::paramtempstore", TRUE | GV_ADDMULTI);
- Perl_sv_setsv(current_perl, temp_store,params);
- params = NULL;
- temp_store = NULL;
+ PerlIO_flush((PerlIO*)NULL);
+ Perl_ithread_set(aTHX_ thread);
- temp_store = Perl_get_sv(current_perl, "threads::calltempstore", TRUE | GV_ADDMULTI);
- Perl_sv_setsv(current_perl,temp_store, init_function);
- init_function = NULL;
- temp_store = NULL;
-
+ SAVEBOOL(PL_srand_called); /* Save this so it becomes the correct
+ value */
+ PL_srand_called = FALSE; /* Set it to false so we can detect
+ if it gets set during the clone */
#ifdef WIN32
- thread->interp = perl_clone(current_perl,4);
+ thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE | CLONEf_CLONE_HOST);
#else
- thread->interp = perl_clone(current_perl,0);
+ thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE);
#endif
+ /* perl_clone leaves us in new interpreter's context.
+ As it is tricky to spot an implicit aTHX, create a new scope
+ with aTHX matching the context for the duration of
+ our work for new interpreter.
+ */
+ {
+ dTHXa(thread->interp);
+
+ MY_CXT_CLONE;
+
+ /* Here we remove END blocks since they should only run
+ in the thread they are created
+ */
+ SvREFCNT_dec(PL_endav);
+ PL_endav = newAV();
+ clone_param.flags = 0;
+ thread->init_function = sv_dup(init_function, &clone_param);
+ if (SvREFCNT(thread->init_function) == 0) {
+ SvREFCNT_inc(thread->init_function);
+ }
+
- thread->init_function = newSVsv(Perl_get_sv(thread->interp, "threads::calltempstore",FALSE));
- thread->params = newSVsv(Perl_get_sv(thread->interp, "threads::paramtempstore",FALSE));
-
-
-
-
-
- /*
- And here we make sure we clean up the data we put in the namespace of iThread, both in the new and the calling inteprreter
- */
-
-
-
- temp_store = Perl_get_sv(thread->interp,"threads::paramtempstore",FALSE);
- Perl_sv_setsv(thread->interp,temp_store, &PL_sv_undef);
- temp_store = Perl_get_sv(thread->interp,"threads::calltempstore",FALSE);
- Perl_sv_setsv(thread->interp,temp_store, &PL_sv_undef);
+ thread->params = sv_dup(params, &clone_param);
+ SvREFCNT_inc(thread->params);
- PERL_SET_CONTEXT(current_perl);
- temp_store = Perl_get_sv(current_perl,"threads::paramtempstore",FALSE);
- Perl_sv_setsv(current_perl, temp_store, &PL_sv_undef);
+ /* The code below checks that anything living on
+ the tmps stack and has been cloned (so it lives in the
+ ptr_table) has a refcount higher than 0
- temp_store = Perl_get_sv(current_perl,"threads::calltempstore",FALSE);
- Perl_sv_setsv(current_perl, temp_store, &PL_sv_undef);
+ If the refcount is 0 it means that a something on the
+ stack/context was holding a reference to it and
+ since we init_stacks() in perl_clone that won't get
+ cleaned and we will get a leaked scalar.
+ The reason it was cloned was that it lived on the
+ @_ stack.
- /* lets init the thread */
+ Example of this can be found in bugreport 15837
+ where calls in the parameter list end up as a temp
+ One could argue that this fix should be in perl_clone
+ */
+
+ while (tmps_ix > 0) {
+ SV* sv = (SV*)ptr_table_fetch(PL_ptr_table, tmps_tmp[tmps_ix]);
+ tmps_ix--;
+ if (sv && SvREFCNT(sv) == 0) {
+ SvREFCNT_inc(sv);
+ SvREFCNT_dec(sv);
+ }
+ }
+
+ SvTEMP_off(thread->init_function);
+ ptr_table_free(PL_ptr_table);
+ PL_ptr_table = NULL;
+ PL_exit_flags |= PERL_EXIT_DESTRUCT_END;
+ }
+ Perl_ithread_set(aTHX_ current_thread);
+ PERL_SET_CONTEXT(aTHX);
- MUTEX_INIT(&thread->mutex);
- thread->tid = tid_counter++;
- thread->detached = 0;
- thread->count = 1;
+ /* Start the thread */
#ifdef WIN32
-
- thread->handle = CreateThread(NULL, 0, Perl_thread_run,
+ thread->handle = CreateThread(NULL, 0, Perl_ithread_run,
(LPVOID)thread, 0, &thread->thr);
-
#else
- pthread_create( &thread->thr, NULL, (void *) Perl_thread_run, thread);
+ {
+ static pthread_attr_t attr;
+ static int attr_inited = 0;
+ static int attr_joinable = PTHREAD_CREATE_JOINABLE;
+ if (!attr_inited) {
+ attr_inited = 1;
+ pthread_attr_init(&attr);
+ }
+# ifdef PTHREAD_ATTR_SETDETACHSTATE
+ PTHREAD_ATTR_SETDETACHSTATE(&attr, attr_joinable);
+# endif
+# ifdef THREAD_CREATE_NEEDS_STACK
+ if(pthread_attr_setstacksize(&attr, THREAD_CREATE_NEEDS_STACK))
+ panic = "panic: pthread_attr_setstacksize failed";
+# endif
+
+#ifdef OLD_PTHREADS_API
+ failure
+ = panic ? 1 : pthread_create( &thread->thr, attr,
+ Perl_ithread_run, (void *)thread);
+#else
+# if defined(HAS_PTHREAD_ATTR_SETSCOPE) && defined(PTHREAD_SCOPE_SYSTEM)
+ pthread_attr_setscope( &attr, PTHREAD_SCOPE_SYSTEM );
+# endif
+ failure
+ = panic ? 1 : pthread_create( &thread->thr, &attr,
+ Perl_ithread_run, (void *)thread);
#endif
- MUTEX_UNLOCK(&create_mutex);
-
-
-
- return obj_ref;
-}
-
-/*
- returns the id of the thread
-*/
-I32 Perl_thread_tid (SV* obj) {
- ithread* thread;
- if(!SvROK(obj)) {
- obj = Perl_thread_self(SvPV_nolen(obj));
- thread = (ithread*)SvIV(SvRV(obj));
- SvREFCNT_dec(obj);
- } else {
- thread = (ithread*)SvIV(SvRV(obj));
}
- return thread->tid;
-}
-
-SV* Perl_thread_self (char* class) {
- dTHX;
- SV* obj_ref;
- SV* obj;
- SV* thread_tid_ptr;
- SV* thread_ptr;
- HE* thread_entry;
- PerlInterpreter *old_context = PERL_GET_CONTEXT;
-
-
-
- SHAREDSvLOCK(threads);
- SHAREDSvEDIT(threads);
+#endif
+ known_threads++;
+ if (
#ifdef WIN32
- thread_tid_ptr = Perl_newSViv(PL_sharedsv_space, (IV) GetCurrentThreadId());
+ thread->handle == NULL
#else
- thread_tid_ptr = Perl_newSViv(PL_sharedsv_space, (IV) pthread_self());
+ failure
#endif
- thread_entry = Perl_hv_fetch_ent(PL_sharedsv_space,(HV*) SHAREDSvGET(threads), thread_tid_ptr, 0,0);
- thread_ptr = HeVAL(thread_entry);
- SvREFCNT_dec(thread_tid_ptr);
- SHAREDSvRELEASE(threads);
- SHAREDSvUNLOCK(threads);
-
+ ) {
+ MUTEX_UNLOCK(&create_destruct_mutex);
+ sv_2mortal(params);
+ Perl_ithread_destruct(aTHX_ thread, "create failed");
+#ifndef WIN32
+ if (panic)
+ Perl_croak(aTHX_ panic);
+#endif
+ return &PL_sv_undef;
+ }
+ active_threads++;
+ MUTEX_UNLOCK(&create_destruct_mutex);
+ sv_2mortal(params);
+ return ithread_to_SV(aTHX_ obj, thread, classname, FALSE);
+}
- obj_ref = newSViv(0);
- obj = newSVrv(obj_ref, class);
- sv_setsv(obj, thread_ptr);
- SvREADONLY_on(obj);
- return obj_ref;
+SV*
+Perl_ithread_self (pTHX_ SV *obj, char* Class)
+{
+ ithread *thread = Perl_ithread_get(aTHX);
+ if (thread)
+ return ithread_to_SV(aTHX_ obj, thread, Class, TRUE);
+ else
+ Perl_croak(aTHX_ "panic: cannot find thread data");
+ return NULL; /* silence compiler warning */
}
/*
- joins the thread
- this code needs to take the returnvalue from the call_sv and send it back
-*/
+ * Joins the thread this code needs to take the returnvalue from the
+ * call_sv and send it back
+ */
-void Perl_thread_join(SV* obj) {
- ithread* thread = (ithread*)SvIV(SvRV(obj));
+void
+Perl_ithread_CLONE(pTHX_ SV *obj)
+{
+ if (SvROK(obj)) {
+ ithread *thread = SV_to_ithread(aTHX_ obj);
+ }
+ else if (ckWARN_d(WARN_THREADS)) {
+ Perl_warn(aTHX_ "CLONE %" SVf,obj);
+ }
+}
+
+AV*
+Perl_ithread_join(pTHX_ SV *obj)
+{
+ ithread *thread = SV_to_ithread(aTHX_ obj);
+ MUTEX_LOCK(&thread->mutex);
+ if (thread->state & PERL_ITHR_DETACHED) {
+ MUTEX_UNLOCK(&thread->mutex);
+ Perl_croak(aTHX_ "Cannot join a detached thread");
+ }
+ else if (thread->state & PERL_ITHR_JOINED) {
+ MUTEX_UNLOCK(&thread->mutex);
+ Perl_croak(aTHX_ "Thread already joined");
+ }
+ else {
+ AV* retparam;
#ifdef WIN32
DWORD waitcode;
- waitcode = WaitForSingleObject(thread->handle, INFINITE);
#else
void *retval;
+#endif
+ MUTEX_UNLOCK(&thread->mutex);
+#ifdef WIN32
+ waitcode = WaitForSingleObject(thread->handle, INFINITE);
+ CloseHandle(thread->handle);
+ thread->handle = 0;
+#else
pthread_join(thread->thr,&retval);
#endif
-}
-
-
-/*
- detaches a thread
- needs to better clean up memory
-*/
-
-void Perl_thread_detach(SV* obj) {
- ithread* thread = (ithread*)SvIV(SvRV(obj));
MUTEX_LOCK(&thread->mutex);
- thread->detached = 1;
-#if !defined(WIN32)
- pthread_detach(thread->thr);
+
+ /* sv_dup over the args */
+ {
+ ithread* current_thread;
+ AV* params = (AV*) SvRV(thread->params);
+ PerlInterpreter *other_perl = thread->interp;
+ CLONE_PARAMS clone_params;
+ clone_params.stashes = newAV();
+ clone_params.flags |= CLONEf_JOIN_IN;
+ PL_ptr_table = ptr_table_new();
+ current_thread = Perl_ithread_get(aTHX);
+ Perl_ithread_set(aTHX_ thread);
+ /* ensure 'meaningful' addresses retain their meaning */
+ ptr_table_store(PL_ptr_table, &other_perl->Isv_undef, &PL_sv_undef);
+ ptr_table_store(PL_ptr_table, &other_perl->Isv_no, &PL_sv_no);
+ ptr_table_store(PL_ptr_table, &other_perl->Isv_yes, &PL_sv_yes);
+
+#if 0
+ {
+ I32 len = av_len(params)+1;
+ I32 i;
+ for(i = 0; i < len; i++) {
+ sv_dump(SvRV(AvARRAY(params)[i]));
+ }
+ }
#endif
- MUTEX_UNLOCK(&thread->mutex);
-}
-
-
+ retparam = (AV*) sv_dup((SV*)params, &clone_params);
+#if 0
+ {
+ I32 len = av_len(retparam)+1;
+ I32 i;
+ for(i = 0; i < len; i++) {
+ sv_dump(SvRV(AvARRAY(retparam)[i]));
+ }
+ }
+#endif
+ Perl_ithread_set(aTHX_ current_thread);
+ SvREFCNT_dec(clone_params.stashes);
+ SvREFCNT_inc(retparam);
+ ptr_table_free(PL_ptr_table);
+ PL_ptr_table = NULL;
-void Perl_thread_DESTROY (SV* obj) {
- ithread* thread = (ithread*)SvIV(SvRV(obj));
-
- MUTEX_LOCK(&thread->mutex);
- thread->count--;
+ }
+ /* We are finished with it */
+ thread->state |= PERL_ITHR_JOINED;
+ S_ithread_clear(aTHX_ thread);
MUTEX_UNLOCK(&thread->mutex);
- Perl_thread_destruct(thread);
-
+
+ return retparam;
+ }
+ return (AV*)NULL;
}
-void Perl_thread_destruct (ithread* thread) {
- return;
- MUTEX_LOCK(&thread->mutex);
- if(thread->count != 0) {
- MUTEX_UNLOCK(&thread->mutex);
- return;
- }
- MUTEX_UNLOCK(&thread->mutex);
- /* it is safe noone is holding a ref to this */
- /*printf("proper destruction!\n");*/
+void
+Perl_ithread_DESTROY(pTHX_ SV *sv)
+{
+ ithread *thread = SV_to_ithread(aTHX_ sv);
+ sv_unmagic(SvRV(sv),PERL_MAGIC_shared_scalar);
}
+#endif /* USE_ITHREADS */
-MODULE = threads PACKAGE = threads
-BOOT:
- Perl_sharedsv_init(aTHX);
- PL_perl_destruct_level = 2;
- threads = Perl_sharedsv_new(aTHX);
- SHAREDSvEDIT(threads);
- ((HV*) SHAREDSvGET(threads)) = newHV();
- SHAREDSvRELEASE(threads);
- {
-
-
- SV* temp = get_sv("threads::sharedsv_space", TRUE | GV_ADDMULTI);
- SV* temp2 = newSViv((IV)PL_sharedsv_space );
- sv_setsv( temp , temp2 );
- }
- {
- ithread* thread = malloc(sizeof(ithread));
- SV* thread_tid_ptr;
- SV* thread_ptr;
- MUTEX_INIT(&thread->mutex);
- thread->tid = 0;
-#ifdef WIN32
- thread->thr = GetCurrentThreadId();
-#else
- thread->thr = pthread_self();
-#endif
- thread_tid_ptr = Perl_newSViv(PL_sharedsv_space, (IV) thread->thr);
- thread_ptr = Perl_newSViv(PL_sharedsv_space, (IV) thread);
- SHAREDSvEDIT(threads);
- hv_store_ent((HV*) SHAREDSvGET(threads), thread_tid_ptr, thread_ptr,0);
- SHAREDSvRELEASE(threads);
- SvREFCNT_dec(thread_tid_ptr);
- }
- MUTEX_INIT(&create_mutex);
+MODULE = threads PACKAGE = threads PREFIX = ithread_
+PROTOTYPES: DISABLE
+#ifdef USE_ITHREADS
+void
+ithread_new (classname, function_to_call, ...)
+char * classname
+SV * function_to_call
+CODE:
+{
+ AV* params = newAV();
+ if (items > 2) {
+ int i;
+ for(i = 2; i < items ; i++) {
+ av_push(params, SvREFCNT_inc(ST(i)));
+ }
+ }
+ ST(0) = sv_2mortal(Perl_ithread_create(aTHX_ Nullsv, classname, function_to_call, newRV_noinc((SV*) params)));
+ XSRETURN(1);
+}
-PROTOTYPES: DISABLE
+void
+ithread_list(char *classname)
+PPCODE:
+{
+ ithread *curr_thread;
+ MUTEX_LOCK(&create_destruct_mutex);
+ curr_thread = threads;
+ if(curr_thread->tid != 0)
+ XPUSHs( sv_2mortal(ithread_to_SV(aTHX_ NULL, curr_thread, classname, TRUE)));
+ while(curr_thread) {
+ curr_thread = curr_thread->next;
+ if(curr_thread == threads)
+ break;
+ if(curr_thread->state & PERL_ITHR_DETACHED ||
+ curr_thread->state & PERL_ITHR_JOINED)
+ continue;
+ XPUSHs( sv_2mortal(ithread_to_SV(aTHX_ NULL, curr_thread, classname, TRUE)));
+ }
+ MUTEX_UNLOCK(&create_destruct_mutex);
+}
-SV *
-create (class, function_to_call, ...)
- char * class
- SV * function_to_call
- CODE:
- AV* params = newAV();
- if(items > 2) {
- int i;
- for(i = 2; i < items ; i++) {
- av_push(params, ST(i));
- }
- }
- RETVAL = Perl_thread_create(class, function_to_call, newRV_noinc((SV*) params));
- OUTPUT:
- RETVAL
-SV *
-self (class)
- char* class
- CODE:
- RETVAL = Perl_thread_self(class);
- OUTPUT:
- RETVAL
+void
+ithread_self(char *classname)
+CODE:
+{
+ ST(0) = sv_2mortal(Perl_ithread_self(aTHX_ Nullsv,classname));
+ XSRETURN(1);
+}
int
-tid (obj)
- SV * obj;
- CODE:
- RETVAL = Perl_thread_tid(obj);
- OUTPUT:
- RETVAL
+ithread_tid(ithread *thread)
void
-join (obj)
- SV * obj
- PREINIT:
- I32* temp;
- PPCODE:
- temp = PL_markstack_ptr++;
- Perl_thread_join(obj);
- if (PL_markstack_ptr != temp) {
- /* truly void, because dXSARGS not invoked */
- PL_markstack_ptr = temp;
- XSRETURN_EMPTY; /* return empty stack */
- }
- /* must have used dXSARGS; list context implied */
- return; /* assume stack size is correct */
+ithread_join(SV *obj)
+PPCODE:
+{
+ AV* params = Perl_ithread_join(aTHX_ obj);
+ int i;
+ I32 len = AvFILL(params);
+ for (i = 0; i <= len; i++) {
+ SV* tmp = av_shift(params);
+ XPUSHs(tmp);
+ sv_2mortal(tmp);
+ }
+ SvREFCNT_dec(params);
+}
void
-detach (obj)
- SV * obj
- PREINIT:
- I32* temp;
- PPCODE:
- temp = PL_markstack_ptr++;
- Perl_thread_detach(obj);
- if (PL_markstack_ptr != temp) {
- /* truly void, because dXSARGS not invoked */
- PL_markstack_ptr = temp;
- XSRETURN_EMPTY; /* return empty stack */
- }
- /* must have used dXSARGS; list context implied */
- return; /* assume stack size is correct */
-
-
-
+yield(...)
+CODE:
+{
+ YIELD;
+}
+
+void
+ithread_detach(ithread *thread)
void
-DESTROY (obj)
- SV * obj
- PREINIT:
- I32* temp;
- PPCODE:
- temp = PL_markstack_ptr++;
- Perl_thread_DESTROY(obj);
- if (PL_markstack_ptr != temp) {
- /* truly void, because dXSARGS not invoked */
- PL_markstack_ptr = temp;
- XSRETURN_EMPTY; /* return empty stack */
- }
- /* must have used dXSARGS; list context implied */
- return; /* assume stack size is correct */
+ithread_DESTROY(SV *thread)
+
+#endif /* USE_ITHREADS */
+BOOT:
+{
+ MY_CXT_INIT;
+#ifdef USE_ITHREADS
+ ithread* thread;
+ PL_perl_destruct_level = 2;
+ MUTEX_INIT(&create_destruct_mutex);
+ MUTEX_LOCK(&create_destruct_mutex);
+ PL_threadhook = &Perl_ithread_hook;
+ thread = (ithread *) PerlMemShared_malloc(sizeof(ithread));
+ if (!thread) {
+ PerlLIO_write(PerlIO_fileno(Perl_error_log),
+ PL_no_mem, strlen(PL_no_mem));
+ my_exit(1);
+ }
+ Zero(thread,1,ithread);
+ PL_perl_destruct_level = 2;
+ MUTEX_INIT(&thread->mutex);
+ threads = thread;
+ thread->next = thread;
+ thread->prev = thread;
+ thread->interp = aTHX;
+ thread->count = 1; /* Immortal. */
+ thread->tid = tid_counter++;
+ known_threads++;
+ active_threads++;
+ thread->state = PERL_ITHR_DETACHED;
+#ifdef WIN32
+ thread->thr = GetCurrentThreadId();
+#else
+ thread->thr = pthread_self();
+#endif
+ Perl_ithread_set(aTHX_ thread);
+ MUTEX_UNLOCK(&create_destruct_mutex);
+#endif /* USE_ITHREADS */
+}
https://perl5.git.perl.org / perl5.git / blobdiff