#ifdef WIN32
# include <win32thread.h>
-#elif defined(NETWARE)
-# include <nw5thread.h>
#else
# ifdef OLD_PTHREADS_API /* Here be dragons. */
# define DETACH(t) \
# 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
# 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__); \
+ 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 { \
+ dSAVE_ERRNO; \
int _eC_; \
- if ((_eC_ = perl_pthread_mutex_lock((m)))) \
- Perl_croak_nocontext("panic: MUTEX_LOCK (%d) [%s:%d]", \
+ 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 { \
+ 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]", \
+ 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)))) \
+ if ((_eC_ = pthread_mutex_destroy((m)))) { \
Perl_croak_nocontext("panic: MUTEX_DESTROY (%d) [%s:%d]", \
_eC_, __FILE__, __LINE__); \
+ } \
} STMT_END
#endif /* MUTEX_INIT */
# 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
https://perl5.git.perl.org / perl5.git / blobdiff