#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
+/* Workaround for XSUB.h bug under WIN32 */
+#ifdef WIN32
+# undef setjmp
+# if !defined(__BORLANDC__)
+# define setjmp(x) _setjmp(x)
+# endif
+#endif
+#ifdef HAS_PPPORT_H
+# define NEED_PL_signals
+# define NEED_newRV_noinc
+# define NEED_sv_2pv_flags
+# include "ppport.h"
+# include "threads.h"
+#endif
#ifdef USE_ITHREADS
#ifdef WIN32
-#include <windows.h>
-#include <win32thread.h>
-#define PERL_THREAD_SETSPECIFIC(k,v) TlsSetValue(k,v)
-#define PERL_THREAD_GETSPECIFIC(k,v) v = TlsGetValue(k)
-#define PERL_THREAD_ALLOC_SPECIFIC(k) \
-STMT_START {\
- if((k = TlsAlloc()) == TLS_OUT_OF_INDEXES) {\
- PerlIO_printf(PerlIO_stderr(),"panic threads.h: TlsAlloc");\
- exit(1);\
- }\
-} STMT_END
-#else
-#include <pthread.h>
-#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))
-#define PERL_THREAD_GETSPECIFIC(k,v) pthread_getspecific(k,&v)
-#define PERL_THREAD_ALLOC_SPECIFIC(k) STMT_START {\
- if(pthread_keycreate(&(k),0)) {\
- PerlIO_printf(PerlIO_stderr(), "panic threads.h: pthread_key_create");\
- exit(1);\
- }\
-} STMT_END
+# include <windows.h>
+ /* Supposed to be in Winbase.h */
+# ifndef STACK_SIZE_PARAM_IS_A_RESERVATION
+# define STACK_SIZE_PARAM_IS_A_RESERVATION 0x00010000
+# endif
+# include <win32thread.h>
#else
-#define PERL_THREAD_DETACH(t) pthread_detach((t))
-#define PERL_THREAD_GETSPECIFIC(k,v) v = pthread_getspecific(k)
-#define PERL_THREAD_ALLOC_SPECIFIC(k) STMT_START {\
- if(pthread_key_create(&(k),0)) {\
- PerlIO_printf(PerlIO_stderr(), "panic threads.h: pthread_key_create");\
- exit(1);\
- }\
-} STMT_END
+# 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
#endif
+#if !defined(HAS_GETPAGESIZE) && defined(I_SYS_PARAM)
+# include <sys/param.h>
#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 */
+#define PERL_ITHR_DETACHED 1 /* Thread has been detached */
+#define PERL_ITHR_JOINED 2 /* Thread has been joined */
+#define PERL_ITHR_FINISHED 4 /* Thread has finished execution */
+#define PERL_ITHR_THREAD_EXIT_ONLY 8 /* exit() only exits current thread */
+#define PERL_ITHR_NONVIABLE 16 /* Thread creation failed */
+#define PERL_ITHR_DIED 32 /* Thread finished by dying */
+
+#define PERL_ITHR_UNCALLABLE (PERL_ITHR_DETACHED|PERL_ITHR_JOINED)
+
+
+typedef struct _ithread {
+ struct _ithread *next; /* Next thread in the list */
+ struct _ithread *prev; /* Prev thread in the list */
+ PerlInterpreter *interp; /* The threads interpreter */
+ UV tid; /* Threads module's thread id */
+ perl_mutex mutex; /* Mutex for updating things in this struct */
+ int count; /* Reference count. See S_ithread_create. */
+ int state; /* Detached, joined, finished, etc. */
+ 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 */
+ DWORD thr; /* OS's idea if thread id */
+ HANDLE handle; /* OS's waitable handle */
#else
- pthread_t thr; /* OS's handle for the thread */
+ pthread_t thr; /* OS's handle for the thread */
+#endif
+ IV stack_size;
+ SV *err; /* Error from abnormally terminated thread */
+ char *err_class; /* Error object's classname if applicable */
+#ifndef WIN32
+ sigset_t initial_sigmask; /* Thread wakes up with signals blocked */
#endif
} ithread;
-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);
+#define MY_CXT_KEY "threads::_cxt" XS_VERSION
-static perl_mutex create_destruct_mutex; /* protects the creation and destruction of threads*/
+typedef struct {
+ /* Used by Perl interpreter for thread context switching */
+ ithread *context;
+} my_cxt_t;
-I32 tid_counter = 0;
-I32 known_threads = 0;
-I32 active_threads = 0;
-perl_key self_key;
+START_MY_CXT
-/*
- * Clear up after thread is done with
- */
-void
-Perl_ithread_destruct (pTHX_ ithread* thread, const char *why)
+
+#define MY_POOL_KEY "threads::_pool" XS_VERSION
+
+typedef struct {
+ /* Structure for 'main' thread
+ * Also forms the 'base' for the doubly-linked list of threads */
+ ithread main_thread;
+
+ /* Protects the creation and destruction of threads*/
+ perl_mutex create_destruct_mutex;
+
+ UV tid_counter;
+ IV joinable_threads;
+ IV running_threads;
+ IV detached_threads;
+ IV total_threads;
+ IV default_stack_size;
+ IV page_size;
+} my_pool_t;
+
+#define dMY_POOL \
+ SV *my_pool_sv = *hv_fetch(PL_modglobal, MY_POOL_KEY, \
+ sizeof(MY_POOL_KEY)-1, TRUE); \
+ my_pool_t *my_poolp = INT2PTR(my_pool_t*, SvUV(my_pool_sv))
+
+#define MY_POOL (*my_poolp)
+
+#ifndef WIN32
+/* Block most signals for calling thread, setting the old signal mask to
+ * oldmask, if it is not NULL */
+STATIC int
+S_block_most_signals(sigset_t *oldmask)
{
- PerlInterpreter* destroyperl = NULL;
- MUTEX_LOCK(&thread->mutex);
- if (!thread->next) {
- 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 */
- if (thread->interp) {
- dTHXa(thread->interp);
- PERL_SET_CONTEXT(thread->interp);
- SvREFCNT_dec(thread->params);
- thread->params = Nullsv;
- destroyperl = thread->interp;
- thread->interp = NULL;
- }
- MUTEX_UNLOCK(&thread->mutex);
- MUTEX_DESTROY(&thread->mutex);
- PerlMemShared_free(thread);
- if(destroyperl) {
- perl_destruct(destroyperl);
- perl_free(destroyperl);
- }
- PERL_SET_CONTEXT(aTHX);
+ sigset_t newmask;
+
+ sigfillset(&newmask);
+ /* Don't block certain "important" signals (stolen from mg.c) */
+#ifdef SIGILL
+ sigdelset(&newmask, SIGILL);
+#endif
+#ifdef SIGBUS
+ sigdelset(&newmask, SIGBUS);
+#endif
+#ifdef SIGSEGV
+ sigdelset(&newmask, SIGSEGV);
+#endif
+
+#if defined(VMS)
+ /* no per-thread blocking available */
+ return sigprocmask(SIG_BLOCK, &newmask, oldmask);
+#else
+ return pthread_sigmask(SIG_BLOCK, &newmask, oldmask);
+#endif /* WIN32 */
}
-int
-Perl_ithread_hook(pTHX)
+/* Set the signal mask for this thread to newmask */
+STATIC int
+S_set_sigmask(sigset_t *newmask)
{
- int veto_cleanup = 0;
- MUTEX_LOCK(&create_destruct_mutex);
- if (aTHX == PL_curinterp && active_threads != 1) {
- Perl_warn(aTHX_ "A thread exited while %" IVdf " other threads were still running",
- (IV)active_threads);
- veto_cleanup = 1;
+#if defined(VMS)
+ return sigprocmask(SIG_SETMASK, newmask, NULL);
+#else
+ return pthread_sigmask(SIG_SETMASK, newmask, NULL);
+#endif /* WIN32 */
+}
+#endif
+
+/* Used by Perl interpreter for thread context switching */
+STATIC void
+S_ithread_set(pTHX_ ithread *thread)
+{
+ dMY_CXT;
+ MY_CXT.context = thread;
+}
+
+STATIC ithread *
+S_ithread_get(pTHX)
+{
+ dMY_CXT;
+ return (MY_CXT.context);
+}
+
+
+/* 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 locked. Also,
+ * must be called with MY_POOL.create_destruct_mutex unlocked as destruction
+ * of the interpreter can lead to recursive destruction calls that could
+ * lead to a deadlock on that mutex.
+ */
+STATIC void
+S_ithread_clear(pTHX_ ithread *thread)
+{
+ PerlInterpreter *interp;
+ sigset_t origmask;
+
+ assert(((thread->state & PERL_ITHR_FINISHED) &&
+ (thread->state & PERL_ITHR_UNCALLABLE))
+ ||
+ (thread->state & PERL_ITHR_NONVIABLE));
+
+#ifndef WIN32
+ /* We temporarily set the interpreter context to the interpreter being
+ * destroyed. It's in no condition to handle signals while it's being
+ * taken apart.
+ */
+ S_block_most_signals(&origmask);
+#endif
+
+ interp = thread->interp;
+ if (interp) {
+ dTHXa(interp);
+
+ PERL_SET_CONTEXT(interp);
+ S_ithread_set(aTHX_ thread);
+
+ SvREFCNT_dec(thread->params);
+ thread->params = Nullsv;
+
+ if (thread->err) {
+ SvREFCNT_dec(thread->err);
+ thread->err = Nullsv;
+ }
+
+ perl_destruct(interp);
+ perl_free(interp);
+ thread->interp = NULL;
}
- MUTEX_UNLOCK(&create_destruct_mutex);
- return veto_cleanup;
+
+ PERL_SET_CONTEXT(aTHX);
+#ifndef WIN32
+ S_set_sigmask(&origmask);
+#endif
}
-void
-Perl_ithread_detach(pTHX_ ithread *thread)
+
+/* Decrement the refcount of an ithread, and if it reaches zero, free it.
+ * Must be called with the mutex held.
+ * On return, mutex is released (or destroyed).
+ */
+STATIC void
+S_ithread_free(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);
+ HANDLE handle;
#endif
+ dMY_POOL;
+
+ if (! (thread->state & PERL_ITHR_NONVIABLE)) {
+ assert(thread->count > 0);
+ if (--thread->count > 0) {
+ MUTEX_UNLOCK(&thread->mutex);
+ return;
+ }
+ assert((thread->state & PERL_ITHR_FINISHED) &&
+ (thread->state & PERL_ITHR_UNCALLABLE));
}
- if ((thread->state & PERL_ITHR_FINISHED) &&
- (thread->state & PERL_ITHR_DETACHED)) {
- MUTEX_UNLOCK(&thread->mutex);
- Perl_ithread_destruct(aTHX_ thread, "detach");
+ MUTEX_UNLOCK(&thread->mutex);
+
+ /* Main thread (0) is immortal and should never get here */
+ assert(thread->tid != 0);
+
+ /* Remove from circular list of threads */
+ MUTEX_LOCK(&MY_POOL.create_destruct_mutex);
+ assert(thread->prev && thread->next);
+ thread->next->prev = thread->prev;
+ thread->prev->next = thread->next;
+ thread->next = NULL;
+ thread->prev = NULL;
+ MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex);
+
+ /* Thread is now disowned */
+ MUTEX_LOCK(&thread->mutex);
+ S_ithread_clear(aTHX_ thread);
+
+#ifdef WIN32
+ handle = thread->handle;
+ thread->handle = NULL;
+#endif
+ MUTEX_UNLOCK(&thread->mutex);
+ MUTEX_DESTROY(&thread->mutex);
+
+#ifdef WIN32
+ if (handle) {
+ CloseHandle(handle);
}
- else {
- MUTEX_UNLOCK(&thread->mutex);
+#endif
+
+ PerlMemShared_free(thread);
+
+ /* total_threads >= 1 is used to veto cleanup by the main thread,
+ * should it happen to exit while other threads still exist.
+ * Decrement this as the very last thing in the thread's existence.
+ * Otherwise, MY_POOL and global state such as PL_op_mutex may get
+ * freed while we're still using it.
+ */
+ MUTEX_LOCK(&MY_POOL.create_destruct_mutex);
+ MY_POOL.total_threads--;
+ MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex);
+}
+
+
+static void
+S_ithread_count_inc(pTHX_ ithread *thread)
+{
+ MUTEX_LOCK(&thread->mutex);
+ thread->count++;
+ MUTEX_UNLOCK(&thread->mutex);
+}
+
+
+/* Warn if exiting with any unjoined threads */
+STATIC int
+S_exit_warning(pTHX)
+{
+ int veto_cleanup, warn;
+ dMY_POOL;
+
+ MUTEX_LOCK(&MY_POOL.create_destruct_mutex);
+ veto_cleanup = (MY_POOL.total_threads > 0);
+ warn = (MY_POOL.running_threads || MY_POOL.joinable_threads);
+ MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex);
+
+ if (warn) {
+ if (ckWARN_d(WARN_THREADS)) {
+ Perl_warn(aTHX_ "Perl exited with active threads:\n\t%"
+ IVdf " running and unjoined\n\t%"
+ IVdf " finished and unjoined\n\t%"
+ IVdf " running and detached\n",
+ MY_POOL.running_threads,
+ MY_POOL.joinable_threads,
+ MY_POOL.detached_threads);
+ }
}
+
+ return (veto_cleanup);
}
+
+/* Called from perl_destruct() in each thread. If it's the main thread,
+ * stop it from freeing everything if there are other threads still running.
+ */
+int
+Perl_ithread_hook(pTHX)
+{
+ dMY_POOL;
+ return ((aTHX == MY_POOL.main_thread.interp) ? S_exit_warning(aTHX) : 0);
+}
+
+
/* MAGIC (in mg.h sense) hooks */
int
ithread_mg_get(pTHX_ SV *sv, MAGIC *mg)
{
- ithread *thread = (ithread *) mg->mg_ptr;
- SvIVX(sv) = PTR2IV(thread);
+ ithread *thread = (ithread *)mg->mg_ptr;
+ SvIV_set(sv, PTR2IV(thread));
SvIOK_on(sv);
- return 0;
+ return (0);
}
int
ithread_mg_free(pTHX_ SV *sv, MAGIC *mg)
{
- ithread *thread = (ithread *) mg->mg_ptr;
+ 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;
+ S_ithread_free(aTHX_ thread); /* Releases 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;
+ S_ithread_count_inc(aTHX_ (ithread *)mg->mg_ptr);
+ 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 */
+ 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.
- * Passed as the C level function to run in the new thread
- */
+/* Provided default, minimum and rational stack sizes */
+STATIC IV
+S_good_stack_size(pTHX_ IV stack_size)
+{
+ dMY_POOL;
-#ifdef WIN32
-THREAD_RET_TYPE
-Perl_ithread_run(LPVOID arg) {
+ /* Use default stack size if no stack size specified */
+ if (! stack_size) {
+ return (MY_POOL.default_stack_size);
+ }
+
+#ifdef PTHREAD_STACK_MIN
+ /* Can't use less than minimum */
+ if (stack_size < PTHREAD_STACK_MIN) {
+ if (ckWARN(WARN_THREADS)) {
+ Perl_warn(aTHX_ "Using minimum thread stack size of %" IVdf, (IV)PTHREAD_STACK_MIN);
+ }
+ return (PTHREAD_STACK_MIN);
+ }
+#endif
+
+ /* Round up to page size boundary */
+ if (MY_POOL.page_size <= 0) {
+#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
+ SETERRNO(0, SS_NORMAL);
+# ifdef _SC_PAGESIZE
+ MY_POOL.page_size = sysconf(_SC_PAGESIZE);
+# else
+ MY_POOL.page_size = sysconf(_SC_MMAP_PAGE_SIZE);
+# endif
+ if ((long)MY_POOL.page_size < 0) {
+ if (errno) {
+ SV * const error = get_sv("@", 0);
+ (void)SvUPGRADE(error, SVt_PV);
+ Perl_croak(aTHX_ "PANIC: sysconf: %s", SvPV_nolen(error));
+ } else {
+ Perl_croak(aTHX_ "PANIC: sysconf: pagesize unknown");
+ }
+ }
#else
-void*
-Perl_ithread_run(void * arg) {
+# ifdef HAS_GETPAGESIZE
+ MY_POOL.page_size = getpagesize();
+# else
+# if defined(I_SYS_PARAM) && defined(PAGESIZE)
+ MY_POOL.page_size = PAGESIZE;
+# else
+ MY_POOL.page_size = 8192; /* A conservative default */
+# endif
+# endif
+ if (MY_POOL.page_size <= 0) {
+ Perl_croak(aTHX_ "PANIC: bad pagesize %" IVdf, (IV)MY_POOL.page_size);
+ }
#endif
- ithread* thread = (ithread*) arg;
- dTHXa(thread->interp);
- PERL_SET_CONTEXT(thread->interp);
- PERL_THREAD_SETSPECIFIC(self_key,thread);
+ }
+ stack_size = ((stack_size + (MY_POOL.page_size - 1)) / MY_POOL.page_size) * MY_POOL.page_size;
-#if 0
- /* Far from clear messing with ->thr child-side is a good idea */
- MUTEX_LOCK(&thread->mutex);
+ return (stack_size);
+}
+
+
+/* Starts executing the thread.
+ * Passed as the C level function to run in the new thread.
+ */
#ifdef WIN32
- thread->thr = GetCurrentThreadId();
+STATIC THREAD_RET_TYPE
+S_ithread_run(LPVOID arg)
#else
- thread->thr = pthread_self();
-#endif
- MUTEX_UNLOCK(&thread->mutex);
-#endif
-
- PL_perl_destruct_level = 2;
-
- {
- AV* params = (AV*) SvRV(thread->params);
- I32 len = av_len(params)+1;
- int i;
- dSP;
- ENTER;
- SAVETMPS;
- PUSHMARK(SP);
- for(i = 0; i < len; i++) {
- XPUSHs(av_shift(params));
- }
- PUTBACK;
- 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));
- }
- PUTBACK;
- if (SvTRUE(ERRSV)) {
- Perl_warn(aTHX_ "thread failed to start: %" SVf, ERRSV);
- }
- FREETMPS;
- LEAVE;
- SvREFCNT_dec(thread->init_function);
- }
-
- PerlIO_flush((PerlIO*)NULL);
- MUTEX_LOCK(&thread->mutex);
- thread->state |= PERL_ITHR_FINISHED;
-
- if (thread->state & PERL_ITHR_DETACHED) {
- MUTEX_UNLOCK(&thread->mutex);
- Perl_ithread_destruct(aTHX_ thread, "detached finish");
- } else {
- MUTEX_UNLOCK(&thread->mutex);
- }
- MUTEX_LOCK(&create_destruct_mutex);
- active_threads--;
- assert( active_threads >= 0 );
- MUTEX_UNLOCK(&create_destruct_mutex);
+STATIC void *
+S_ithread_run(void * arg)
+#endif
+{
+ ithread *thread = (ithread *)arg;
+ int jmp_rc = 0;
+ I32 oldscope;
+ int exit_app = 0; /* Thread terminated using 'exit' */
+ int exit_code = 0;
+ int died = 0; /* Thread terminated abnormally */
+
+ dJMPENV;
+
+ dTHXa(thread->interp);
+
+ dMY_POOL;
+
+ /* Blocked until ->create() call finishes */
+ MUTEX_LOCK(&thread->mutex);
+ MUTEX_UNLOCK(&thread->mutex);
+
+ PERL_SET_CONTEXT(thread->interp);
+ S_ithread_set(aTHX_ thread);
+
+#ifndef WIN32
+ /* Thread starts with most signals blocked - restore the signal mask from
+ * the ithread struct.
+ */
+ S_set_sigmask(&thread->initial_sigmask);
+#endif
+
+ PL_perl_destruct_level = 2;
+
+ {
+ AV *params = (AV *)SvRV(thread->params);
+ int len = (int)av_len(params)+1;
+ int ii;
+
+ dSP;
+ ENTER;
+ SAVETMPS;
+
+ /* Put args on the stack */
+ PUSHMARK(SP);
+ for (ii=0; ii < len; ii++) {
+ XPUSHs(av_shift(params));
+ }
+ PUTBACK;
+
+ oldscope = PL_scopestack_ix;
+ JMPENV_PUSH(jmp_rc);
+ if (jmp_rc == 0) {
+ /* Run the specified function */
+ len = (int)call_sv(thread->init_function, thread->gimme|G_EVAL);
+ } else if (jmp_rc == 2) {
+ /* Thread exited */
+ exit_app = 1;
+ exit_code = STATUS_CURRENT;
+ while (PL_scopestack_ix > oldscope) {
+ LEAVE;
+ }
+ }
+ JMPENV_POP;
+
+#ifndef WIN32
+ /* The interpreter is finished, so this thread can stop receiving
+ * signals. This way, our signal handler doesn't get called in the
+ * middle of our parent thread calling perl_destruct()...
+ */
+ S_block_most_signals(NULL);
+#endif
+
+ /* Remove args from stack and put back in params array */
+ SPAGAIN;
+ for (ii=len-1; ii >= 0; ii--) {
+ SV *sv = POPs;
+ if (jmp_rc == 0 && (thread->gimme & G_WANT) != G_VOID) {
+ av_store(params, ii, SvREFCNT_inc(sv));
+ }
+ }
+
+ FREETMPS;
+ LEAVE;
+
+ /* Check for abnormal termination */
+ if (SvTRUE(ERRSV)) {
+ died = PERL_ITHR_DIED;
+ thread->err = newSVsv(ERRSV);
+ /* If ERRSV is an object, remember the classname and then
+ * rebless into 'main' so it will survive 'cloning'
+ */
+ if (sv_isobject(thread->err)) {
+ thread->err_class = HvNAME(SvSTASH(SvRV(thread->err)));
+ sv_bless(thread->err, gv_stashpv("main", 0));
+ }
+
+ if (ckWARN_d(WARN_THREADS)) {
+ oldscope = PL_scopestack_ix;
+ JMPENV_PUSH(jmp_rc);
+ if (jmp_rc == 0) {
+ /* Warn that thread died */
+ Perl_warn(aTHX_ "Thread %" UVuf " terminated abnormally: %" SVf, thread->tid, ERRSV);
+ } else if (jmp_rc == 2) {
+ /* Warn handler exited */
+ exit_app = 1;
+ exit_code = STATUS_CURRENT;
+ while (PL_scopestack_ix > oldscope) {
+ LEAVE;
+ }
+ }
+ JMPENV_POP;
+ }
+ }
+
+ /* Release function ref */
+ SvREFCNT_dec(thread->init_function);
+ thread->init_function = Nullsv;
+ }
+
+ PerlIO_flush((PerlIO *)NULL);
+
+ MUTEX_LOCK(&MY_POOL.create_destruct_mutex);
+ MUTEX_LOCK(&thread->mutex);
+ /* Mark as finished */
+ thread->state |= (PERL_ITHR_FINISHED | died);
+ /* Clear exit flag if required */
+ if (thread->state & PERL_ITHR_THREAD_EXIT_ONLY) {
+ exit_app = 0;
+ }
+
+ /* Adjust thread status counts */
+ if (thread->state & PERL_ITHR_DETACHED) {
+ MY_POOL.detached_threads--;
+ } else {
+ MY_POOL.running_threads--;
+ MY_POOL.joinable_threads++;
+ }
+ MUTEX_UNLOCK(&thread->mutex);
+ MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex);
+
+ /* Exit application if required */
+ if (exit_app) {
+ oldscope = PL_scopestack_ix;
+ JMPENV_PUSH(jmp_rc);
+ if (jmp_rc == 0) {
+ /* Warn if there are unjoined threads */
+ S_exit_warning(aTHX);
+ } else if (jmp_rc == 2) {
+ /* Warn handler exited */
+ exit_code = STATUS_CURRENT;
+ while (PL_scopestack_ix > oldscope) {
+ LEAVE;
+ }
+ }
+ JMPENV_POP;
+
+ my_exit(exit_code);
+ }
+
+ /* At this point, the interpreter may have been freed, so call
+ * free in the the context of of the 'main' interpreter which
+ * can't have been freed due to the veto_cleanup mechanism.
+ */
+ aTHX = MY_POOL.main_thread.interp;
+
+ MUTEX_LOCK(&thread->mutex);
+ S_ithread_free(aTHX_ thread); /* Releases MUTEX */
#ifdef WIN32
- return (DWORD)0;
+ return ((DWORD)0);
#else
- return 0;
+ return (0);
#endif
}
-SV *
-ithread_to_SV(pTHX_ SV *obj, ithread *thread, char *classname, bool inc)
+
+/* Type conversion helper functions */
+
+STATIC SV *
+S_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 (inc)
+ S_ithread_count_inc(aTHX_ thread);
+
+ if (! obj) {
+ obj = newSV(0);
}
- 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);
+
+ 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;
+
+ return (obj);
}
-ithread *
-SV_to_ithread(pTHX_ SV *sv)
+STATIC ithread *
+S_SV_to_ithread(pTHX_ SV *sv)
{
- ithread *thread;
- if (SvROK(sv))
- {
- thread = INT2PTR(ithread*, SvIV(SvRV(sv)));
- }
- else
- {
- PERL_THREAD_GETSPECIFIC(self_key,thread);
- }
- return thread;
+ /* Argument is a thread */
+ if (SvROK(sv)) {
+ return (INT2PTR(ithread *, SvIV(SvRV(sv))));
+ }
+ /* Argument is classname, therefore return current thread */
+ return (S_ithread_get(aTHX));
}
-/*
- * 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)
+/* threads->create()
+ * Called in context of parent thread.
+ * Called with MY_POOL.create_destruct_mutex locked. (Unlocked on error.)
+ */
+STATIC ithread *
+S_ithread_create(
+ pTHX_ SV *init_function,
+ IV stack_size,
+ int gimme,
+ int exit_opt,
+ SV *params)
{
- ithread* thread;
- CLONE_PARAMS clone_param;
-
- MUTEX_LOCK(&create_destruct_mutex);
- thread = PerlMemShared_malloc(sizeof(ithread));
- 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.
- */
-
- PerlIO_flush((PerlIO*)NULL);
+ ithread *thread;
+ ithread *current_thread = S_ithread_get(aTHX);
+
+ SV **tmps_tmp = PL_tmps_stack;
+ IV tmps_ix = PL_tmps_ix;
+#ifndef WIN32
+ int rc_stack_size = 0;
+ int rc_thread_create = 0;
+#endif
+ dMY_POOL;
+
+ /* Allocate thread structure in context of the main thread's interpreter */
+ {
+ PERL_SET_CONTEXT(MY_POOL.main_thread.interp);
+ thread = (ithread *)PerlMemShared_malloc(sizeof(ithread));
+ }
+ PERL_SET_CONTEXT(aTHX);
+ if (!thread) {
+ MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex);
+ PerlLIO_write(PerlIO_fileno(Perl_error_log), PL_no_mem, strlen(PL_no_mem));
+ my_exit(1);
+ }
+ Zero(thread, 1, ithread);
+
+ /* Add to threads list */
+ thread->next = &MY_POOL.main_thread;
+ thread->prev = MY_POOL.main_thread.prev;
+ MY_POOL.main_thread.prev = thread;
+ thread->prev->next = thread;
+ MY_POOL.total_threads++;
+
+ /* 1 ref to be held by the local var 'thread' in S_ithread_run().
+ * 1 ref to be held by the threads object that we assume we will
+ * be embedded in upon our return.
+ * 1 ref to be the responsibility of join/detach, so we don't get
+ * freed until join/detach, even if no thread objects remain.
+ * This allows the following to work:
+ * { threads->create(sub{...}); } threads->object(1)->join;
+ */
+ thread->count = 3;
+
+ /* Block new thread until ->create() call finishes */
+ MUTEX_INIT(&thread->mutex);
+ MUTEX_LOCK(&thread->mutex);
+
+ thread->tid = MY_POOL.tid_counter++;
+ thread->stack_size = S_good_stack_size(aTHX_ stack_size);
+ thread->gimme = gimme;
+ thread->state = exit_opt;
+
+ /* "Clone" our interpreter into the thread's interpreter.
+ * This gives thread access to "static data" and code.
+ */
+ PerlIO_flush((PerlIO *)NULL);
+ S_ithread_set(aTHX_ thread);
+
+ 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 */
+
+#ifndef WIN32
+ /* perl_clone() will leave us the new interpreter's context. This poses
+ * two problems for our signal handler. First, it sets the new context
+ * before the new interpreter struct is fully initialized, so our signal
+ * handler might find bogus data in the interpreter struct it gets.
+ * Second, even if the interpreter is initialized before a signal comes in,
+ * we would like to avoid that interpreter receiving notifications for
+ * signals (especially when they ought to be for the one running in this
+ * thread), until it is running in its own thread. Another problem is that
+ * the new thread will not have set the context until some time after it
+ * has started, so it won't be safe for our signal handler to run until
+ * that time.
+ *
+ * So we block most signals here, so the new thread will inherit the signal
+ * mask, and unblock them right after the thread creation. The original
+ * mask is saved in the thread struct so that the new thread can restore
+ * the original mask.
+ */
+ S_block_most_signals(&thread->initial_sigmask);
+#endif
#ifdef WIN32
- thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE | CLONEf_CLONE_HOST);
+ thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE | CLONEf_CLONE_HOST);
#else
- 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 implcit aTHX create a new scope
- with aTHX matching the context for the duration of
- our work for new interpreter.
- */
- {
- dTHXa(thread->interp);
- /* 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->params = sv_dup(params, &clone_param);
- SvREFCNT_inc(thread->params);
- SvTEMP_off(thread->init_function);
- ptr_table_free(PL_ptr_table);
- PL_ptr_table = NULL;
- PL_exit_flags |= PERL_EXIT_DESTRUCT_END;
- }
-
- PERL_SET_CONTEXT(aTHX);
-
- /* Start the thread */
+ thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE);
+#endif
-#ifdef WIN32
+ /* 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.
+ */
+ {
+ CLONE_PARAMS clone_param;
+
+ dTHXa(thread->interp);
+
+ MY_CXT_CLONE;
- thread->handle = CreateThread(NULL, 0, Perl_ithread_run,
- (LPVOID)thread, 0, &thread->thr);
+ /* 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;
+ if (SvPOK(init_function)) {
+ thread->init_function = newSV(0);
+ sv_copypv(thread->init_function, init_function);
+ } else {
+ thread->init_function =
+ SvREFCNT_inc(sv_dup(init_function, &clone_param));
+ }
+
+ thread->params = sv_dup(params, &clone_param);
+ SvREFCNT_inc_void(thread->params);
+
+ /* 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.
+ *
+ * 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.
+ *
+ * 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_void(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;
+ }
+ S_ithread_set(aTHX_ current_thread);
+ PERL_SET_CONTEXT(aTHX);
+
+ /* Create/start the thread */
+#ifdef WIN32
+ thread->handle = CreateThread(NULL,
+ (DWORD)thread->stack_size,
+ S_ithread_run,
+ (LPVOID)thread,
+ STACK_SIZE_PARAM_IS_A_RESERVATION,
+ &thread->thr);
#else
- {
- 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);
- }
+ {
+ STATIC pthread_attr_t attr;
+ STATIC int attr_inited = 0;
+ STATIC int attr_joinable = PTHREAD_CREATE_JOINABLE;
+ if (! attr_inited) {
+ pthread_attr_init(&attr);
+ attr_inited = 1;
+ }
+
# ifdef PTHREAD_ATTR_SETDETACHSTATE
- PTHREAD_ATTR_SETDETACHSTATE(&attr, attr_joinable);
+ /* Threads start out joinable */
+ PTHREAD_ATTR_SETDETACHSTATE(&attr, attr_joinable);
# endif
-# ifdef THREAD_CREATE_NEEDS_STACK
- if(pthread_attr_setstacksize(&attr, THREAD_CREATE_NEEDS_STACK))
- croak("panic: pthread_attr_setstacksize failed");
+
+# ifdef _POSIX_THREAD_ATTR_STACKSIZE
+ /* Set thread's stack size */
+ if (thread->stack_size > 0) {
+ rc_stack_size = pthread_attr_setstacksize(&attr, (size_t)thread->stack_size);
+ }
+# endif
+
+ /* Create the thread */
+ if (! rc_stack_size) {
+# ifdef OLD_PTHREADS_API
+ rc_thread_create = pthread_create(&thread->thr,
+ attr,
+ S_ithread_run,
+ (void *)thread);
+# else
+# if defined(HAS_PTHREAD_ATTR_SETSCOPE) && defined(PTHREAD_SCOPE_SYSTEM)
+ pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM);
+# endif
+ rc_thread_create = pthread_create(&thread->thr,
+ &attr,
+ S_ithread_run,
+ (void *)thread);
# endif
+ }
-#ifdef OLD_PTHREADS_API
- pthread_create( &thread->thr, attr, Perl_ithread_run, (void *)thread);
+#ifndef WIN32
+ /* Now it's safe to accept signals, since we're in our own interpreter's
+ * context and we have created the thread.
+ */
+ S_set_sigmask(&thread->initial_sigmask);
+#endif
+
+# ifdef _POSIX_THREAD_ATTR_STACKSIZE
+ /* Try to get thread's actual stack size */
+ {
+ size_t stacksize;
+#ifdef HPUX1020
+ stacksize = pthread_attr_getstacksize(attr);
#else
- pthread_create( &thread->thr, &attr, Perl_ithread_run, (void *)thread);
+ if (! pthread_attr_getstacksize(&attr, &stacksize))
#endif
- }
+ if (stacksize > 0) {
+ thread->stack_size = (IV)stacksize;
+ }
+ }
+# endif
+ }
#endif
- known_threads++;
- active_threads++;
- MUTEX_UNLOCK(&create_destruct_mutex);
- sv_2mortal(params);
- return ithread_to_SV(aTHX_ obj, thread, classname, FALSE);
-}
-SV*
-Perl_ithread_self (pTHX_ SV *obj, char* Class)
-{
- ithread *thread;
- PERL_THREAD_GETSPECIFIC(self_key,thread);
- return ithread_to_SV(aTHX_ obj, thread, Class, TRUE);
+ /* Check for errors */
+#ifdef WIN32
+ if (thread->handle == NULL) {
+#else
+ if (rc_stack_size || rc_thread_create) {
+#endif
+ /* Must unlock mutex for destruct call */
+ MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex);
+ sv_2mortal(params);
+ thread->state |= PERL_ITHR_NONVIABLE;
+ S_ithread_free(aTHX_ thread); /* Releases MUTEX */
+#ifndef WIN32
+ if (ckWARN_d(WARN_THREADS)) {
+ if (rc_stack_size) {
+ Perl_warn(aTHX_ "Thread creation failed: pthread_attr_setstacksize(%" IVdf ") returned %d", thread->stack_size, rc_stack_size);
+ } else {
+ Perl_warn(aTHX_ "Thread creation failed: pthread_create returned %d", rc_thread_create);
+ }
+ }
+#endif
+ return (NULL);
+ }
+
+ MY_POOL.running_threads++;
+ sv_2mortal(params);
+ return (thread);
}
-/*
- * Joins the thread this code needs to take the returnvalue from the
- * call_sv and send it back
- */
+#endif /* USE_ITHREADS */
+
+
+MODULE = threads PACKAGE = threads PREFIX = ithread_
+PROTOTYPES: DISABLE
+
+#ifdef USE_ITHREADS
void
-Perl_ithread_CLONE(pTHX_ SV *obj)
-{
- if (SvROK(obj))
- {
- ithread *thread = SV_to_ithread(aTHX_ obj);
- }
- else
- {
- Perl_warn(aTHX_ "CLONE %" SVf,obj);
- }
-}
+ithread_create(...)
+ PREINIT:
+ char *classname;
+ ithread *thread;
+ SV *function_to_call;
+ AV *params;
+ HV *specs;
+ IV stack_size;
+ int context;
+ int exit_opt;
+ SV *thread_exit_only;
+ char *str;
+ int idx;
+ int ii;
+ dMY_POOL;
+ CODE:
+ if ((items >= 2) && SvROK(ST(1)) && SvTYPE(SvRV(ST(1)))==SVt_PVHV) {
+ if (--items < 2) {
+ Perl_croak(aTHX_ "Usage: threads->create(\\%%specs, function, ...)");
+ }
+ specs = (HV*)SvRV(ST(1));
+ idx = 1;
+ } else {
+ if (items < 2) {
+ Perl_croak(aTHX_ "Usage: threads->create(function, ...)");
+ }
+ specs = NULL;
+ idx = 0;
+ }
-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;
+ if (sv_isobject(ST(0))) {
+ /* $thr->create() */
+ classname = HvNAME(SvSTASH(SvRV(ST(0))));
+ thread = INT2PTR(ithread *, SvIV(SvRV(ST(0))));
+ MUTEX_LOCK(&thread->mutex);
+ stack_size = thread->stack_size;
+ exit_opt = thread->state & PERL_ITHR_THREAD_EXIT_ONLY;
+ MUTEX_UNLOCK(&thread->mutex);
+ } else {
+ /* threads->create() */
+ classname = (char *)SvPV_nolen(ST(0));
+ stack_size = MY_POOL.default_stack_size;
+ thread_exit_only = get_sv("threads::thread_exit_only", GV_ADD);
+ exit_opt = (SvTRUE(thread_exit_only))
+ ? PERL_ITHR_THREAD_EXIT_ONLY : 0;
+ }
+
+ function_to_call = ST(idx+1);
+
+ context = -1;
+ if (specs) {
+ /* stack_size */
+ if (hv_exists(specs, "stack", 5)) {
+ stack_size = SvIV(*hv_fetch(specs, "stack", 5, 0));
+ } else if (hv_exists(specs, "stacksize", 9)) {
+ stack_size = SvIV(*hv_fetch(specs, "stacksize", 9, 0));
+ } else if (hv_exists(specs, "stack_size", 10)) {
+ stack_size = SvIV(*hv_fetch(specs, "stack_size", 10, 0));
+ }
+
+ /* context */
+ if (hv_exists(specs, "context", 7)) {
+ str = (char *)SvPV_nolen(*hv_fetch(specs, "context", 7, 0));
+ switch (*str) {
+ case 'a':
+ case 'A':
+ case 'l':
+ case 'L':
+ context = G_ARRAY;
+ break;
+ case 's':
+ case 'S':
+ context = G_SCALAR;
+ break;
+ case 'v':
+ case 'V':
+ context = G_VOID;
+ break;
+ default:
+ Perl_croak(aTHX_ "Invalid context: %s", str);
+ }
+ } else if (hv_exists(specs, "array", 5)) {
+ if (SvTRUE(*hv_fetch(specs, "array", 5, 0))) {
+ context = G_ARRAY;
+ }
+ } else if (hv_exists(specs, "list", 4)) {
+ if (SvTRUE(*hv_fetch(specs, "list", 4, 0))) {
+ context = G_ARRAY;
+ }
+ } else if (hv_exists(specs, "scalar", 6)) {
+ if (SvTRUE(*hv_fetch(specs, "scalar", 6, 0))) {
+ context = G_SCALAR;
+ }
+ } else if (hv_exists(specs, "void", 4)) {
+ if (SvTRUE(*hv_fetch(specs, "void", 4, 0))) {
+ context = G_VOID;
+ }
+ }
+
+ /* exit => thread_only */
+ if (hv_exists(specs, "exit", 4)) {
+ str = (char *)SvPV_nolen(*hv_fetch(specs, "exit", 4, 0));
+ exit_opt = (*str == 't' || *str == 'T')
+ ? PERL_ITHR_THREAD_EXIT_ONLY : 0;
+ }
+ }
+ if (context == -1) {
+ context = GIMME_V; /* Implicit context */
+ } else {
+ context |= (GIMME_V & (~(G_ARRAY|G_SCALAR|G_VOID)));
+ }
+
+ /* Function args */
+ params = newAV();
+ if (items > 2) {
+ for (ii=2; ii < items ; ii++) {
+ av_push(params, SvREFCNT_inc(ST(idx+ii)));
+ }
+ }
+
+ /* Create thread */
+ MUTEX_LOCK(&MY_POOL.create_destruct_mutex);
+ thread = S_ithread_create(aTHX_ function_to_call,
+ stack_size,
+ context,
+ exit_opt,
+ newRV_noinc((SV*)params));
+ if (! thread) {
+ XSRETURN_UNDEF; /* Mutex already unlocked */
+ }
+ ST(0) = sv_2mortal(S_ithread_to_SV(aTHX_ Nullsv, thread, classname, FALSE));
+ MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex);
+
+ /* Let thread run */
+ MUTEX_UNLOCK(&thread->mutex);
+
+ /* XSRETURN(1); - implied */
+
+
+void
+ithread_list(...)
+ PREINIT:
+ char *classname;
+ ithread *thread;
+ int list_context;
+ IV count = 0;
+ int want_running = 0;
+ int state;
+ dMY_POOL;
+ PPCODE:
+ /* Class method only */
+ if (SvROK(ST(0))) {
+ Perl_croak(aTHX_ "Usage: threads->list(...)");
+ }
+ classname = (char *)SvPV_nolen(ST(0));
+
+ /* Calling context */
+ list_context = (GIMME_V == G_ARRAY);
+
+ /* Running or joinable parameter */
+ if (items > 1) {
+ want_running = SvTRUE(ST(1));
+ }
+
+ /* Walk through threads list */
+ MUTEX_LOCK(&MY_POOL.create_destruct_mutex);
+ for (thread = MY_POOL.main_thread.next;
+ thread != &MY_POOL.main_thread;
+ thread = thread->next)
+ {
+ MUTEX_LOCK(&thread->mutex);
+ state = thread->state;
+ MUTEX_UNLOCK(&thread->mutex);
+
+ /* Ignore detached or joined threads */
+ if (state & PERL_ITHR_UNCALLABLE) {
+ continue;
+ }
+
+ /* Filter per parameter */
+ if (items > 1) {
+ if (want_running) {
+ if (state & PERL_ITHR_FINISHED) {
+ continue; /* Not running */
+ }
+ } else {
+ if (! (state & PERL_ITHR_FINISHED)) {
+ continue; /* Still running - not joinable yet */
+ }
+ }
+ }
+
+ /* Push object on stack if list context */
+ if (list_context) {
+ XPUSHs(sv_2mortal(S_ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE)));
+ }
+ count++;
+ }
+ MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex);
+ /* If scalar context, send back count */
+ if (! list_context) {
+ XSRETURN_IV(count);
+ }
+
+
+void
+ithread_self(...)
+ PREINIT:
+ char *classname;
+ ithread *thread;
+ CODE:
+ /* Class method only */
+ if ((items != 1) || SvROK(ST(0))) {
+ Perl_croak(aTHX_ "Usage: threads->self()");
+ }
+ classname = (char *)SvPV_nolen(ST(0));
+
+ thread = S_ithread_get(aTHX);
+
+ ST(0) = sv_2mortal(S_ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE));
+ /* XSRETURN(1); - implied */
+
+
+void
+ithread_tid(...)
+ PREINIT:
+ ithread *thread;
+ CODE:
+ PERL_UNUSED_VAR(items);
+ thread = S_SV_to_ithread(aTHX_ ST(0));
+ XST_mUV(0, thread->tid);
+ /* XSRETURN(1); - implied */
+
+
+void
+ithread_join(...)
+ PREINIT:
+ ithread *thread;
+ ithread *current_thread;
+ int join_err;
+ AV *params = NULL;
+ int len;
+ int ii;
+#ifndef WIN32
+ int rc_join;
+ void *retval;
+#endif
+ dMY_POOL;
+ PPCODE:
+ /* Object method only */
+ if ((items != 1) || ! sv_isobject(ST(0))) {
+ Perl_croak(aTHX_ "Usage: $thr->join()");
+ }
+
+ /* Check if the thread is joinable and not ourselves */
+ thread = S_SV_to_ithread(aTHX_ ST(0));
+ current_thread = S_ithread_get(aTHX);
+
+ MUTEX_LOCK(&thread->mutex);
+ if ((join_err = (thread->state & PERL_ITHR_UNCALLABLE))) {
+ MUTEX_UNLOCK(&thread->mutex);
+ Perl_croak(aTHX_ (join_err & PERL_ITHR_DETACHED)
+ ? "Cannot join a detached thread"
+ : "Thread already joined");
+ } else if (thread->tid == current_thread->tid) {
+ MUTEX_UNLOCK(&thread->mutex);
+ Perl_croak(aTHX_ "Cannot join self");
+ }
+
+ /* Mark as joined */
+ thread->state |= PERL_ITHR_JOINED;
+ MUTEX_UNLOCK(&thread->mutex);
+
+ MUTEX_LOCK(&MY_POOL.create_destruct_mutex);
+ MY_POOL.joinable_threads--;
+ MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex);
+
+ /* Join the thread */
#ifdef WIN32
- DWORD waitcode;
+ if (WaitForSingleObject(thread->handle, INFINITE) != WAIT_OBJECT_0) {
+ /* Timeout/abandonment unexpected here; check $^E */
+ Perl_croak(aTHX_ "PANIC: underlying join failed");
+ };
#else
- void *retval;
+ if ((rc_join = pthread_join(thread->thr, &retval)) != 0) {
+ /* In progress/deadlock/unknown unexpected here; check $! */
+ errno = rc_join;
+ Perl_croak(aTHX_ "PANIC: underlying join failed");
+ };
#endif
- MUTEX_UNLOCK(&thread->mutex);
+
+ MUTEX_LOCK(&thread->mutex);
+ /* Get the return value from the call_sv */
+ /* Objects do not survive this process - FIXME */
+ if ((thread->gimme & G_WANT) != G_VOID) {
+ AV *params_copy;
+ PerlInterpreter *other_perl;
+ CLONE_PARAMS clone_params;
+
+ params_copy = (AV *)SvRV(thread->params);
+ other_perl = thread->interp;
+ clone_params.stashes = newAV();
+ clone_params.flags = CLONEf_JOIN_IN;
+ PL_ptr_table = ptr_table_new();
+ S_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);
+ params = (AV *)sv_dup((SV*)params_copy, &clone_params);
+ S_ithread_set(aTHX_ current_thread);
+ SvREFCNT_dec(clone_params.stashes);
+ SvREFCNT_inc_void(params);
+ ptr_table_free(PL_ptr_table);
+ PL_ptr_table = NULL;
+ }
+
+ /* If thread didn't die, then we can free its interpreter */
+ if (! (thread->state & PERL_ITHR_DIED)) {
+ S_ithread_clear(aTHX_ thread);
+ }
+ S_ithread_free(aTHX_ thread); /* Releases MUTEX */
+
+ /* If no return values, then just return */
+ if (! params) {
+ XSRETURN_UNDEF;
+ }
+
+ /* Put return values on stack */
+ len = (int)AvFILL(params);
+ for (ii=0; ii <= len; ii++) {
+ SV* param = av_shift(params);
+ XPUSHs(sv_2mortal(param));
+ }
+
+ /* Free return value array */
+ SvREFCNT_dec(params);
+
+
+void
+ithread_yield(...)
+ CODE:
+ PERL_UNUSED_VAR(items);
+ YIELD;
+
+
+void
+ithread_detach(...)
+ PREINIT:
+ ithread *thread;
+ int detach_err;
+ dMY_POOL;
+ CODE:
+ PERL_UNUSED_VAR(items);
+
+ /* Detach the thread */
+ thread = S_SV_to_ithread(aTHX_ ST(0));
+ MUTEX_LOCK(&MY_POOL.create_destruct_mutex);
+ MUTEX_LOCK(&thread->mutex);
+ if (! (detach_err = (thread->state & PERL_ITHR_UNCALLABLE))) {
+ /* Thread is detachable */
+ thread->state |= PERL_ITHR_DETACHED;
#ifdef WIN32
- waitcode = WaitForSingleObject(thread->handle, INFINITE);
+ /* Windows has no 'detach thread' function */
#else
- pthread_join(thread->thr,&retval);
-#endif
- MUTEX_LOCK(&thread->mutex);
-
- /* sv_dup over the args */
- {
- AV* params = (AV*) SvRV(thread->params);
- CLONE_PARAMS clone_params;
- clone_params.stashes = newAV();
- PL_ptr_table = ptr_table_new();
- retparam = (AV*) sv_dup((SV*)params, &clone_params);
- SvREFCNT_dec(clone_params.stashes);
- SvREFCNT_inc(retparam);
- ptr_table_free(PL_ptr_table);
- PL_ptr_table = NULL;
-
- }
- /* We have finished with it */
- thread->state |= PERL_ITHR_JOINED;
- MUTEX_UNLOCK(&thread->mutex);
- sv_unmagic(SvRV(obj),PERL_MAGIC_shared_scalar);
- return retparam;
- }
- return (AV*)NULL;
-}
+ PERL_THREAD_DETACH(thread->thr);
+#endif
+ if (thread->state & PERL_ITHR_FINISHED) {
+ MY_POOL.joinable_threads--;
+ } else {
+ MY_POOL.running_threads--;
+ MY_POOL.detached_threads++;
+ }
+ }
+ MUTEX_UNLOCK(&thread->mutex);
+ MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex);
+
+ if (detach_err) {
+ Perl_croak(aTHX_ (detach_err & PERL_ITHR_DETACHED)
+ ? "Thread already detached"
+ : "Cannot detach a joined thread");
+ }
+
+ /* If thread is finished and didn't die,
+ * then we can free its interpreter */
+ MUTEX_LOCK(&thread->mutex);
+ if ((thread->state & PERL_ITHR_FINISHED) &&
+ ! (thread->state & PERL_ITHR_DIED))
+ {
+ S_ithread_clear(aTHX_ thread);
+ }
+ S_ithread_free(aTHX_ thread); /* Releases MUTEX */
+
void
-Perl_ithread_DESTROY(pTHX_ SV *sv)
-{
- ithread *thread = SV_to_ithread(aTHX_ sv);
- sv_unmagic(SvRV(sv),PERL_MAGIC_shared_scalar);
-}
+ithread_kill(...)
+ PREINIT:
+ ithread *thread;
+ char *sig_name;
+ IV signal;
+ CODE:
+ /* Must have safe signals */
+ if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) {
+ Perl_croak(aTHX_ "Cannot signal threads without safe signals");
+ }
-#endif /* USE_ITHREADS */
+ /* Object method only */
+ if ((items != 2) || ! sv_isobject(ST(0))) {
+ Perl_croak(aTHX_ "Usage: $thr->kill('SIG...')");
+ }
-MODULE = threads PACKAGE = threads PREFIX = ithread_
-PROTOTYPES: DISABLE
+ /* Get signal */
+ sig_name = SvPV_nolen(ST(1));
+ if (isALPHA(*sig_name)) {
+ if (*sig_name == 'S' && sig_name[1] == 'I' && sig_name[2] == 'G') {
+ sig_name += 3;
+ }
+ if ((signal = whichsig(sig_name)) < 0) {
+ Perl_croak(aTHX_ "Unrecognized signal name: %s", sig_name);
+ }
+ } else {
+ signal = SvIV(ST(1));
+ }
+
+ /* Set the signal for the thread */
+ thread = S_SV_to_ithread(aTHX_ ST(0));
+ MUTEX_LOCK(&thread->mutex);
+ if (thread->interp) {
+ dTHXa(thread->interp);
+ PL_psig_pend[signal]++;
+ PL_sig_pending = 1;
+ }
+ MUTEX_UNLOCK(&thread->mutex);
+
+ /* Return the thread to allow for method chaining */
+ ST(0) = ST(0);
+ /* XSRETURN(1); - implied */
-#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);
-}
+ithread_DESTROY(...)
+ CODE:
+ PERL_UNUSED_VAR(items);
+ sv_unmagic(SvRV(ST(0)), PERL_MAGIC_shared_scalar);
+
void
-ithread_list(char *classname)
-PPCODE:
-{
- ithread *curr_thread;
- MUTEX_LOCK(&create_destruct_mutex);
- curr_thread = threads;
- if(curr_thread->tid != 0)
- PUSHs( 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;
- PUSHs( sv_2mortal(ithread_to_SV(aTHX_ NULL, curr_thread, classname, TRUE)));
- }
- MUTEX_UNLOCK(&create_destruct_mutex);
-}
+ithread_equal(...)
+ PREINIT:
+ int are_equal = 0;
+ CODE:
+ PERL_UNUSED_VAR(items);
+
+ /* Compares TIDs to determine thread equality */
+ if (sv_isobject(ST(0)) && sv_isobject(ST(1))) {
+ ithread *thr1 = INT2PTR(ithread *, SvIV(SvRV(ST(0))));
+ ithread *thr2 = INT2PTR(ithread *, SvIV(SvRV(ST(1))));
+ are_equal = (thr1->tid == thr2->tid);
+ }
+ if (are_equal) {
+ XST_mYES(0);
+ } else {
+ /* Return 0 on false for backward compatibility */
+ XST_mIV(0, 0);
+ }
+ /* XSRETURN(1); - implied */
void
-ithread_self(char *classname)
-CODE:
-{
- ST(0) = sv_2mortal(Perl_ithread_self(aTHX_ Nullsv,classname));
- XSRETURN(1);
-}
+ithread_object(...)
+ PREINIT:
+ char *classname;
+ UV tid;
+ ithread *thread;
+ int state;
+ int have_obj = 0;
+ dMY_POOL;
+ CODE:
+ /* Class method only */
+ if (SvROK(ST(0))) {
+ Perl_croak(aTHX_ "Usage: threads->object($tid)");
+ }
+ classname = (char *)SvPV_nolen(ST(0));
+
+ if ((items < 2) || ! SvOK(ST(1))) {
+ XSRETURN_UNDEF;
+ }
+
+ /* threads->object($tid) */
+ tid = SvUV(ST(1));
+
+ /* Walk through threads list */
+ MUTEX_LOCK(&MY_POOL.create_destruct_mutex);
+ for (thread = MY_POOL.main_thread.next;
+ thread != &MY_POOL.main_thread;
+ thread = thread->next)
+ {
+ /* Look for TID */
+ if (thread->tid == tid) {
+ /* Ignore if detached or joined */
+ MUTEX_LOCK(&thread->mutex);
+ state = thread->state;
+ MUTEX_UNLOCK(&thread->mutex);
+ if (! (state & PERL_ITHR_UNCALLABLE)) {
+ /* Put object on stack */
+ ST(0) = sv_2mortal(S_ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE));
+ have_obj = 1;
+ }
+ break;
+ }
+ }
+ MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex);
+
+ if (! have_obj) {
+ XSRETURN_UNDEF;
+ }
+ /* XSRETURN(1); - implied */
-int
-ithread_tid(ithread *thread)
void
-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);
-}
+ithread__handle(...);
+ PREINIT:
+ ithread *thread;
+ CODE:
+ PERL_UNUSED_VAR(items);
+ thread = S_SV_to_ithread(aTHX_ ST(0));
+#ifdef WIN32
+ XST_mUV(0, PTR2UV(&thread->handle));
+#else
+ XST_mUV(0, PTR2UV(&thread->thr));
+#endif
+ /* XSRETURN(1); - implied */
+
void
-yield(...)
-CODE:
-{
- YIELD;
-}
-
+ithread_get_stack_size(...)
+ PREINIT:
+ IV stack_size;
+ dMY_POOL;
+ CODE:
+ PERL_UNUSED_VAR(items);
+ if (sv_isobject(ST(0))) {
+ /* $thr->get_stack_size() */
+ ithread *thread = INT2PTR(ithread *, SvIV(SvRV(ST(0))));
+ stack_size = thread->stack_size;
+ } else {
+ /* threads->get_stack_size() */
+ stack_size = MY_POOL.default_stack_size;
+ }
+ XST_mIV(0, stack_size);
+ /* XSRETURN(1); - implied */
+
+
+void
+ithread_set_stack_size(...)
+ PREINIT:
+ IV old_size;
+ dMY_POOL;
+ CODE:
+ if (items != 2) {
+ Perl_croak(aTHX_ "Usage: threads->set_stack_size($size)");
+ }
+ if (sv_isobject(ST(0))) {
+ Perl_croak(aTHX_ "Cannot change stack size of an existing thread");
+ }
+ if (! looks_like_number(ST(1))) {
+ Perl_croak(aTHX_ "Stack size must be numeric");
+ }
+
+ old_size = MY_POOL.default_stack_size;
+ MY_POOL.default_stack_size = S_good_stack_size(aTHX_ SvIV(ST(1)));
+ XST_mIV(0, old_size);
+ /* XSRETURN(1); - implied */
+
+
+void
+ithread_is_running(...)
+ PREINIT:
+ ithread *thread;
+ CODE:
+ /* Object method only */
+ if ((items != 1) || ! sv_isobject(ST(0))) {
+ Perl_croak(aTHX_ "Usage: $thr->is_running()");
+ }
+
+ thread = INT2PTR(ithread *, SvIV(SvRV(ST(0))));
+ MUTEX_LOCK(&thread->mutex);
+ ST(0) = (thread->state & PERL_ITHR_FINISHED) ? &PL_sv_no : &PL_sv_yes;
+ MUTEX_UNLOCK(&thread->mutex);
+ /* XSRETURN(1); - implied */
+
+
+void
+ithread_is_detached(...)
+ PREINIT:
+ ithread *thread;
+ CODE:
+ PERL_UNUSED_VAR(items);
+ thread = S_SV_to_ithread(aTHX_ ST(0));
+ MUTEX_LOCK(&thread->mutex);
+ ST(0) = (thread->state & PERL_ITHR_DETACHED) ? &PL_sv_yes : &PL_sv_no;
+ MUTEX_UNLOCK(&thread->mutex);
+ /* XSRETURN(1); - implied */
+
+
+void
+ithread_is_joinable(...)
+ PREINIT:
+ ithread *thread;
+ CODE:
+ /* Object method only */
+ if ((items != 1) || ! sv_isobject(ST(0))) {
+ Perl_croak(aTHX_ "Usage: $thr->is_joinable()");
+ }
+
+ thread = INT2PTR(ithread *, SvIV(SvRV(ST(0))));
+ MUTEX_LOCK(&thread->mutex);
+ ST(0) = ((thread->state & PERL_ITHR_FINISHED) &&
+ ! (thread->state & PERL_ITHR_UNCALLABLE))
+ ? &PL_sv_yes : &PL_sv_no;
+ MUTEX_UNLOCK(&thread->mutex);
+ /* XSRETURN(1); - implied */
+
void
-ithread_detach(ithread *thread)
+ithread_wantarray(...)
+ PREINIT:
+ ithread *thread;
+ CODE:
+ PERL_UNUSED_VAR(items);
+ thread = S_SV_to_ithread(aTHX_ ST(0));
+ ST(0) = ((thread->gimme & G_WANT) == G_ARRAY) ? &PL_sv_yes :
+ ((thread->gimme & G_WANT) == G_VOID) ? &PL_sv_undef
+ /* G_SCALAR */ : &PL_sv_no;
+ /* XSRETURN(1); - implied */
+
void
-ithread_DESTROY(SV *thread)
+ithread_set_thread_exit_only(...)
+ PREINIT:
+ ithread *thread;
+ CODE:
+ if (items != 2) {
+ Perl_croak(aTHX_ "Usage: ->set_thread_exit_only(boolean)");
+ }
+ thread = S_SV_to_ithread(aTHX_ ST(0));
+ MUTEX_LOCK(&thread->mutex);
+ if (SvTRUE(ST(1))) {
+ thread->state |= PERL_ITHR_THREAD_EXIT_ONLY;
+ } else {
+ thread->state &= ~PERL_ITHR_THREAD_EXIT_ONLY;
+ }
+ MUTEX_UNLOCK(&thread->mutex);
+
+
+void
+ithread_error(...)
+ PREINIT:
+ ithread *thread;
+ SV *err = NULL;
+ CODE:
+ /* Object method only */
+ if ((items != 1) || ! sv_isobject(ST(0))) {
+ Perl_croak(aTHX_ "Usage: $thr->err()");
+ }
+
+ thread = INT2PTR(ithread *, SvIV(SvRV(ST(0))));
+ MUTEX_LOCK(&thread->mutex);
+
+ /* If thread died, then clone the error into the calling thread */
+ if (thread->state & PERL_ITHR_DIED) {
+ PerlInterpreter *other_perl;
+ CLONE_PARAMS clone_params;
+ ithread *current_thread;
+
+ other_perl = thread->interp;
+ clone_params.stashes = newAV();
+ clone_params.flags = CLONEf_JOIN_IN;
+ PL_ptr_table = ptr_table_new();
+ current_thread = S_ithread_get(aTHX);
+ S_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);
+ err = sv_dup(thread->err, &clone_params);
+ S_ithread_set(aTHX_ current_thread);
+ SvREFCNT_dec(clone_params.stashes);
+ SvREFCNT_inc_void(err);
+ /* If error was an object, bless it into the correct class */
+ if (thread->err_class) {
+ sv_bless(err, gv_stashpv(thread->err_class, 1));
+ }
+ ptr_table_free(PL_ptr_table);
+ PL_ptr_table = NULL;
+ }
+
+ MUTEX_UNLOCK(&thread->mutex);
+
+ if (! err) {
+ XSRETURN_UNDEF;
+ }
+
+ ST(0) = sv_2mortal(err);
+ /* XSRETURN(1); - implied */
+
#endif /* USE_ITHREADS */
+
BOOT:
{
#ifdef USE_ITHREADS
- ithread* thread;
- PL_perl_destruct_level = 2;
- PERL_THREAD_ALLOC_SPECIFIC(self_key);
- MUTEX_INIT(&create_destruct_mutex);
- MUTEX_LOCK(&create_destruct_mutex);
- PL_threadhook = &Perl_ithread_hook;
- thread = PerlMemShared_malloc(sizeof(ithread));
- 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; /* imortal */
- thread->tid = tid_counter++;
- known_threads++;
- active_threads++;
- thread->state = 1;
-#ifdef WIN32
- thread->thr = GetCurrentThreadId();
-#else
- thread->thr = pthread_self();
-#endif
+ SV *my_pool_sv = *hv_fetch(PL_modglobal, MY_POOL_KEY,
+ sizeof(MY_POOL_KEY)-1, TRUE);
+ my_pool_t *my_poolp = (my_pool_t*)SvPVX(newSV(sizeof(my_pool_t)-1));
+
+ MY_CXT_INIT;
+
+ Zero(my_poolp, 1, my_pool_t);
+ sv_setuv(my_pool_sv, PTR2UV(my_poolp));
- PERL_THREAD_SETSPECIFIC(self_key,thread);
- MUTEX_UNLOCK(&create_destruct_mutex);
+ PL_perl_destruct_level = 2;
+ MUTEX_INIT(&MY_POOL.create_destruct_mutex);
+ MUTEX_LOCK(&MY_POOL.create_destruct_mutex);
+
+ PL_threadhook = &Perl_ithread_hook;
+
+ MY_POOL.tid_counter = 1;
+# ifdef THREAD_CREATE_NEEDS_STACK
+ MY_POOL.default_stack_size = THREAD_CREATE_NEEDS_STACK;
+# endif
+
+ /* The 'main' thread is thread 0.
+ * It is detached (unjoinable) and immortal.
+ */
+
+ MUTEX_INIT(&MY_POOL.main_thread.mutex);
+
+ /* Head of the threads list */
+ MY_POOL.main_thread.next = &MY_POOL.main_thread;
+ MY_POOL.main_thread.prev = &MY_POOL.main_thread;
+
+ MY_POOL.main_thread.count = 1; /* Immortal */
+
+ MY_POOL.main_thread.interp = aTHX;
+ MY_POOL.main_thread.state = PERL_ITHR_DETACHED; /* Detached */
+ MY_POOL.main_thread.stack_size = MY_POOL.default_stack_size;
+# ifdef WIN32
+ MY_POOL.main_thread.thr = GetCurrentThreadId();
+# else
+ MY_POOL.main_thread.thr = pthread_self();
+# endif
+
+ S_ithread_set(aTHX_ &MY_POOL.main_thread);
+ MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex);
#endif /* USE_ITHREADS */
}
-
https://perl5.git.perl.org / perl5.git / blobdiff