#ifdef WIN32
# include <win32thread.h>
-#elif defined(NETWARE)
-# include <nw5thread.h>
#else
# ifdef OLD_PTHREADS_API /* Here be dragons. */
# define DETACH(t) \
STMT_START { \
- int _eC_; \
- if ((_eC_ = pthread_detach(&(t)->self))) { \
- MUTEX_UNLOCK(&(t)->mutex); \
- Perl_croak_nocontext("panic: DETACH (%d) [%s:%d]", \
- _eC_, __FILE__, __LINE__); \
- } \
+ int _eC_; \
+ if ((_eC_ = pthread_detach(&(t)->self))) { \
+ MUTEX_UNLOCK(&(t)->mutex); \
+ Perl_croak_nocontext("panic: DETACH (%d) [%s:%d]", \
+ _eC_, __FILE__, __LINE__); \
+ } \
} STMT_END
# define PERL_GET_CONTEXT Perl_get_context()
# define PERL_SET_CONTEXT(t) Perl_set_context((void*)t)
# define PTHREAD_GETSPECIFIC_INT
-# ifdef DJGPP
-# define pthread_addr_t any_t
-# define NEED_PTHREAD_INIT
-# define PTHREAD_CREATE_JOINABLE (1)
-# endif
# ifdef OEMVS
# define pthread_addr_t void *
# define pthread_create(t,a,s,d) pthread_create(t,&(a),s,d)
# define pthread_mutexattr_init(a) pthread_mutexattr_create(a)
# define pthread_mutexattr_settype(a,t) pthread_mutexattr_setkind_np(a,t)
# endif
-# if defined(DJGPP) || defined(OEMVS)
+# if defined(OEMVS)
# define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_attr_setdetachstate(a,&(s))
# define YIELD pthread_yield(NULL)
# endif
#define MUTEX_INIT(m) \
STMT_START { \
- *m = mutex_alloc(); \
- if (*m) { \
- mutex_init(*m); \
- } else { \
- Perl_croak_nocontext("panic: MUTEX_INIT [%s:%d]", \
- __FILE__, __LINE__); \
- } \
+ *m = mutex_alloc(); \
+ if (*m) { \
+ mutex_init(*m); \
+ } else { \
+ Perl_croak_nocontext("panic: MUTEX_INIT [%s:%d]", \
+ __FILE__, __LINE__); \
+ } \
} STMT_END
#define MUTEX_LOCK(m) mutex_lock(*m)
#define MUTEX_UNLOCK(m) mutex_unlock(*m)
#define MUTEX_DESTROY(m) \
STMT_START { \
- mutex_free(*m); \
- *m = 0; \
+ mutex_free(*m); \
+ *m = 0; \
} STMT_END
#define COND_INIT(c) \
STMT_START { \
- *c = condition_alloc(); \
- if (*c) { \
- condition_init(*c); \
- } \
- else { \
- Perl_croak_nocontext("panic: COND_INIT [%s:%d]", \
- __FILE__, __LINE__); \
- } \
+ *c = condition_alloc(); \
+ if (*c) { \
+ condition_init(*c); \
+ } \
+ else { \
+ Perl_croak_nocontext("panic: COND_INIT [%s:%d]", \
+ __FILE__, __LINE__); \
+ } \
} STMT_END
#define COND_SIGNAL(c) condition_signal(*c)
#define COND_WAIT(c, m) condition_wait(*c, *m)
#define COND_DESTROY(c) \
STMT_START { \
- condition_free(*c); \
- *c = 0; \
+ condition_free(*c); \
+ *c = 0; \
} STMT_END
#define THREAD_RET_TYPE any_t
# ifdef MUTEX_INIT_NEEDS_MUTEX_ZEROED
/* Temporary workaround, true bug is deeper. --jhi 1999-02-25 */
# define MUTEX_INIT(m) \
- STMT_START { \
- int _eC_; \
- Zero((m), 1, perl_mutex); \
- if ((_eC_ = pthread_mutex_init((m), pthread_mutexattr_default))) \
- Perl_croak_nocontext("panic: MUTEX_INIT (%d) [%s:%d]", \
- _eC_, __FILE__, __LINE__); \
+ STMT_START { \
+ int _eC_; \
+ Zero((m), 1, perl_mutex); \
+ if ((_eC_ = pthread_mutex_init((m), pthread_mutexattr_default)))\
+ Perl_croak_nocontext("panic: MUTEX_INIT (%d) [%s:%d]", \
+ _eC_, __FILE__, __LINE__); \
} STMT_END
# else
# define MUTEX_INIT(m) \
STMT_START { \
- int _eC_; \
- if ((_eC_ = pthread_mutex_init((m), pthread_mutexattr_default))) \
- Perl_croak_nocontext("panic: MUTEX_INIT (%d) [%s:%d]", \
- _eC_, __FILE__, __LINE__); \
+ int _eC_; \
+ if ((_eC_ = pthread_mutex_init((m), pthread_mutexattr_default))) \
+ Perl_croak_nocontext("panic: MUTEX_INIT (%d) [%s:%d]", \
+ _eC_, __FILE__, __LINE__); \
} STMT_END
# endif
# define perl_pthread_mutex_unlock(m) pthread_mutex_unlock(m)
# endif
-# define MUTEX_LOCK(m) \
+# define MUTEX_LOCK(m) \
STMT_START { \
- int _eC_; \
- if ((_eC_ = perl_pthread_mutex_lock((m)))) \
- Perl_croak_nocontext("panic: MUTEX_LOCK (%d) [%s:%d]", \
- _eC_, __FILE__, __LINE__); \
+ dSAVE_ERRNO; \
+ int _eC_; \
+ if ((_eC_ = perl_pthread_mutex_lock((m)))) \
+ Perl_croak_nocontext("panic: MUTEX_LOCK (%d) [%s:%d]",\
+ _eC_, __FILE__, __LINE__); \
+ RESTORE_ERRNO; \
} STMT_END
-# define MUTEX_UNLOCK(m) \
+# define MUTEX_UNLOCK(m) \
STMT_START { \
- int _eC_; \
- if ((_eC_ = perl_pthread_mutex_unlock((m)))) \
- Perl_croak_nocontext("panic: MUTEX_UNLOCK (%d) [%s:%d]", \
- _eC_, __FILE__, __LINE__); \
+ dSAVE_ERRNO; /* Shouldn't be necessary as panics if fails */\
+ int _eC_; \
+ if ((_eC_ = perl_pthread_mutex_unlock((m)))) { \
+ Perl_croak_nocontext( \
+ "panic: MUTEX_UNLOCK (%d) [%s:%d]", \
+ _eC_, __FILE__, __LINE__); \
+ } \
+ RESTORE_ERRNO; \
} STMT_END
-# define MUTEX_DESTROY(m) \
+# define MUTEX_DESTROY(m) \
STMT_START { \
- int _eC_; \
- if ((_eC_ = pthread_mutex_destroy((m)))) \
- Perl_croak_nocontext("panic: MUTEX_DESTROY (%d) [%s:%d]", \
- _eC_, __FILE__, __LINE__); \
+ int _eC_; \
+ if ((_eC_ = pthread_mutex_destroy((m)))) { \
+ Perl_croak_nocontext("panic: MUTEX_DESTROY (%d) [%s:%d]", \
+ _eC_, __FILE__, __LINE__); \
+ } \
} STMT_END
#endif /* MUTEX_INIT */
#ifndef COND_INIT
# define COND_INIT(c) \
STMT_START { \
- int _eC_; \
- if ((_eC_ = pthread_cond_init((c), pthread_condattr_default))) \
- Perl_croak_nocontext("panic: COND_INIT (%d) [%s:%d]", \
- _eC_, __FILE__, __LINE__); \
+ int _eC_; \
+ if ((_eC_ = pthread_cond_init((c), pthread_condattr_default))) \
+ Perl_croak_nocontext("panic: COND_INIT (%d) [%s:%d]", \
+ _eC_, __FILE__, __LINE__); \
} STMT_END
# define COND_SIGNAL(c) \
STMT_START { \
- int _eC_; \
- if ((_eC_ = pthread_cond_signal((c)))) \
- Perl_croak_nocontext("panic: COND_SIGNAL (%d) [%s:%d]", \
- _eC_, __FILE__, __LINE__); \
+ int _eC_; \
+ if ((_eC_ = pthread_cond_signal((c)))) \
+ Perl_croak_nocontext("panic: COND_SIGNAL (%d) [%s:%d]", \
+ _eC_, __FILE__, __LINE__); \
} STMT_END
# define COND_BROADCAST(c) \
STMT_START { \
- int _eC_; \
- if ((_eC_ = pthread_cond_broadcast((c)))) \
- Perl_croak_nocontext("panic: COND_BROADCAST (%d) [%s:%d]", \
- _eC_, __FILE__, __LINE__); \
+ int _eC_; \
+ if ((_eC_ = pthread_cond_broadcast((c)))) \
+ Perl_croak_nocontext("panic: COND_BROADCAST (%d) [%s:%d]", \
+ _eC_, __FILE__, __LINE__); \
} STMT_END
# define COND_WAIT(c, m) \
STMT_START { \
- int _eC_; \
- if ((_eC_ = pthread_cond_wait((c), (m)))) \
- Perl_croak_nocontext("panic: COND_WAIT (%d) [%s:%d]", \
- _eC_, __FILE__, __LINE__); \
+ int _eC_; \
+ if ((_eC_ = pthread_cond_wait((c), (m)))) \
+ Perl_croak_nocontext("panic: COND_WAIT (%d) [%s:%d]", \
+ _eC_, __FILE__, __LINE__); \
} STMT_END
# define COND_DESTROY(c) \
STMT_START { \
- int _eC_; \
- if ((_eC_ = pthread_cond_destroy((c)))) \
- Perl_croak_nocontext("panic: COND_DESTROY (%d) [%s:%d]", \
- _eC_, __FILE__, __LINE__); \
+ int _eC_; \
+ if ((_eC_ = pthread_cond_destroy((c)))) \
+ Perl_croak_nocontext("panic: COND_DESTROY (%d) [%s:%d]", \
+ _eC_, __FILE__, __LINE__); \
} STMT_END
#endif /* COND_INIT */
# define PERL_READ_LOCK(mutex) \
STMT_START { \
- MUTEX_LOCK(mutex.lock); \
+ MUTEX_LOCK(&(mutex)->lock); \
(mutex)->readers_count++; \
- MUTEX_UNLOCK(mutex.lock); \
+ MUTEX_UNLOCK(&(mutex)->lock); \
} STMT_END
# define PERL_READ_UNLOCK(mutex) \
STMT_START { \
- MUTEX_LOCK(mutex.lock); \
+ MUTEX_LOCK(&(mutex)->lock); \
(mutex)->readers_count--; \
if ((mutex)->readers_count <= 0) { \
- COND_SIGNAL(mutex.zero_readers); \
+ assert((mutex)->readers_count == 0); \
+ COND_SIGNAL(&(mutex)->wakeup); \
(mutex)->readers_count = 0; \
} \
- MUTEX_UNLOCK(mutex.lock); \
+ MUTEX_UNLOCK(&(mutex)->lock); \
} STMT_END
# define PERL_WRITE_LOCK(mutex) \
STMT_START { \
- MUTEX_LOCK(mutex.lock); \
+ MUTEX_LOCK(&(mutex)->lock); \
do { \
- if ((mutex)->readers_count == 0) \
+ if ((mutex)->readers_count <= 0) { \
+ assert((mutex)->readers_count == 0); \
+ (mutex)->readers_count = 0; \
break; \
- COND_WAIT(mutex.zero_readers, mutex.lock); \
+ } \
+ COND_WAIT(&(mutex)->wakeup, &(mutex)->lock); \
} \
while (1); \
\
/* Here, the mutex is locked, with no readers */ \
} STMT_END
-# define PERL_WRITE_UNLOCK(mutex) MUTEX_UNLOCK(mutex.lock)
+# define PERL_WRITE_UNLOCK(mutex) \
+ STMT_START { \
+ COND_SIGNAL(&(mutex)->wakeup); \
+ MUTEX_UNLOCK(&(mutex)->lock); \
+ } STMT_END
# define PERL_RW_MUTEX_INIT(mutex) \
STMT_START { \
- MUTEX_INIT(mutex.lock); \
- COND_INIT(mutex.zero_readers); \
+ MUTEX_INIT(&(mutex)->lock); \
+ COND_INIT(&(mutex)->wakeup); \
(mutex)->readers_count = 0; \
} STMT_END
# define PERL_RW_MUTEX_DESTROY(mutex) \
STMT_START { \
- COND_DESTROY(mutex.zero_readers); \
- MUTEX_DESTROY(mutex.lock); \
+ COND_DESTROY(&(mutex)->wakeup); \
+ MUTEX_DESTROY(&(mutex)->lock); \
} STMT_END
#endif
#ifndef DETACH
# define DETACH(t) \
STMT_START { \
- int _eC_; \
- if ((_eC_ = pthread_detach((t)->self))) { \
- MUTEX_UNLOCK(&(t)->mutex); \
- Perl_croak_nocontext("panic: DETACH (%d) [%s:%d]", \
- _eC_, __FILE__, __LINE__); \
- } \
+ int _eC_; \
+ if ((_eC_ = pthread_detach((t)->self))) { \
+ MUTEX_UNLOCK(&(t)->mutex); \
+ Perl_croak_nocontext("panic: DETACH (%d) [%s:%d]", \
+ _eC_, __FILE__, __LINE__); \
+ } \
} STMT_END
#endif /* DETACH */
#ifndef JOIN
# define JOIN(t, avp) \
STMT_START { \
- int _eC_; \
- if ((_eC_ = pthread_join((t)->self, (void**)(avp)))) \
- Perl_croak_nocontext("panic: pthread_join (%d) [%s:%d]", \
- _eC_, __FILE__, __LINE__); \
+ int _eC_; \
+ if ((_eC_ = pthread_join((t)->self, (void**)(avp)))) \
+ Perl_croak_nocontext("panic: pthread_join (%d) [%s:%d]", \
+ _eC_, __FILE__, __LINE__); \
} STMT_END
#endif /* JOIN */
# define PTHREAD_GETSPECIFIC(key) pthread_getspecific(key)
#endif
-#ifndef PERL_GET_CONTEXT
-# define PERL_GET_CONTEXT PTHREAD_GETSPECIFIC(PL_thr_key)
-#endif
-
-#ifndef PERL_SET_CONTEXT
-# define PERL_SET_CONTEXT(t) \
- STMT_START { \
- int _eC_; \
- if ((_eC_ = pthread_setspecific(PL_thr_key, (void *)(t)))) \
- Perl_croak_nocontext("panic: pthread_setspecific (%d) [%s:%d]", \
- _eC_, __FILE__, __LINE__); \
+#if defined(PERL_THREAD_LOCAL) && !defined(PERL_GET_CONTEXT) && !defined(PERL_SET_CONTEXT) && !defined(__cplusplus)
+/* Use C11 thread-local storage, where possible.
+ * Frustratingly we can't use it for C++ extensions, C++ and C disagree on the
+ * syntax used for thread local storage, meaning that the working token that
+ * Configure probed for C turns out to be a compiler error on C++. Great.
+ * (Well, unless one or both is supporting non-standard syntax as an extension)
+ * As Configure doesn't have a way to probe for C++ dialects, we just take the
+ * safe option and do the same as 5.34.0 and earlier - use pthreads on C++.
+ * Of course, if C++ XS extensions really want to avoid *all* this overhead,
+ * they should #define PERL_NO_GET_CONTEXT and pass aTHX/aTHX_ explicitly) */
+# define PERL_USE_THREAD_LOCAL
+extern PERL_THREAD_LOCAL void *PL_current_context;
+
+# define PERL_GET_CONTEXT PL_current_context
+
+/* We must also call pthread_setspecific() always, as C++ code has to read it
+ * with pthreads (the #else side just below) */
+
+# define PERL_SET_CONTEXT(t) \
+ STMT_START { \
+ int _eC_; \
+ if ((_eC_ = pthread_setspecific(PL_thr_key, \
+ PL_current_context = (void *)(t)))) \
+ Perl_croak_nocontext("panic: pthread_setspecific (%d) [%s:%d]", \
+ _eC_, __FILE__, __LINE__); \
} STMT_END
-#endif /* PERL_SET_CONTEXT */
+
+#else
+/* else fall back to pthreads */
+
+# ifndef PERL_GET_CONTEXT
+# define PERL_GET_CONTEXT PTHREAD_GETSPECIFIC(PL_thr_key)
+# endif
+
+/* For C++ extensions built on a system where the C compiler provides thread
+ * local storage that call PERL_SET_CONTEXT() also need to set
+ * PL_current_context, so need to call into C code to do this.
+ * To avoid exploding code complexity, do this also on C platforms that don't
+ * support thread local storage. PERL_SET_CONTEXT is not called that often. */
+
+# ifndef PERL_SET_CONTEXT
+# define PERL_SET_CONTEXT(t) Perl_set_context((void*)t)
+# endif /* PERL_SET_CONTEXT */
+#endif /* PERL_THREAD_LOCAL */
#ifndef INIT_THREADS
# ifdef NEED_PTHREAD_INIT
#ifndef ALLOC_THREAD_KEY
# define ALLOC_THREAD_KEY \
STMT_START { \
- if (pthread_key_create(&PL_thr_key, 0)) { \
+ if (pthread_key_create(&PL_thr_key, 0)) { \
PERL_UNUSED_RESULT(write(2, STR_WITH_LEN("panic: pthread_key_create failed\n"))); \
- exit(1); \
- } \
+ exit(1); \
+ } \
} STMT_END
#endif
#ifndef FREE_THREAD_KEY
# define FREE_THREAD_KEY \
STMT_START { \
- pthread_key_delete(PL_thr_key); \
+ pthread_key_delete(PL_thr_key); \
} STMT_END
#endif
#ifndef PTHREAD_ATFORK
# ifdef HAS_PTHREAD_ATFORK
# define PTHREAD_ATFORK(prepare,parent,child) \
- pthread_atfork(prepare,parent,child)
+ pthread_atfork(prepare,parent,child)
# else
# define PTHREAD_ATFORK(prepare,parent,child) \
- NOOP
+ NOOP
# endif
#endif
# define PERL_READ_UNLOCK NOOP
# define PERL_WRITE_LOCK NOOP
# define PERL_WRITE_UNLOCK NOOP
+# define PERL_RW_MUTEX_INIT NOOP
+# define PERL_RW_MUTEX_DESTROY NOOP
#endif
#ifndef LOCK_DOLLARZERO_MUTEX
https://perl5.git.perl.org / perl5.git / blobdiff