#ifdef WIN32
# include <win32thread.h>
#else
-
-/* POSIXish threads */
-typedef pthread_t perl_thread;
-#ifdef OLD_PTHREADS_API
-# define pthread_mutexattr_init(a) pthread_mutexattr_create(a)
-# define pthread_mutexattr_settype(a,t) pthread_mutexattr_setkind_np(a,t)
-# define pthread_key_create(k,d) pthread_keycreate(k,(pthread_destructor_t)(d))
-# define YIELD pthread_yield()
-# define DETACH(t) \
+# if defined(OLD_PTHREADS_API) && !defined(DJGPP)
+ /* POSIXish threads */
+# define pthread_mutexattr_init(a) pthread_mutexattr_create(a)
+# define pthread_mutexattr_settype(a,t) pthread_mutexattr_setkind_np(a,t)
+# define pthread_key_create(k,d) pthread_keycreate(k,(pthread_destructor_t)(d))
+# define DETACH(t) \
STMT_START { \
if (pthread_detach(&(t)->self)) { \
MUTEX_UNLOCK(&(t)->mutex); \
croak("panic: DETACH"); \
} \
} STMT_END
-#else
-# define pthread_mutexattr_default NULL
-# define pthread_condattr_default NULL
-# define pthread_attr_default NULL
-#endif /* OLD_PTHREADS_API */
+# else
+# define pthread_mutexattr_default NULL
+# define pthread_condattr_default NULL
+# endif /* OLD_PTHREADS_API */
#endif
#ifndef YIELD
-# define YIELD sched_yield()
+# define YIELD SCHED_YIELD
+#endif
+
+#ifdef PTHREAD_CREATE_JOINABLE
+# define ATTR_JOINABLE PTHREAD_CREATE_JOINABLE
+#else
+# ifdef PTHREAD_CREATE_UNDETACHED
+# define ATTR_JOINABLE PTHREAD_CREATE_UNDETACHED
+# else
+# ifdef __UNDETACHED
+# define ATTR_JOINABLE __UNDETACHED
+# endif
+# endif
#endif
#ifndef MUTEX_INIT
#ifndef SET_THR
#define SET_THR(t) \
STMT_START { \
- if (pthread_setspecific(thr_key, (void *) (t))) \
+ if (pthread_setspecific(PL_thr_key, (void *) (t))) \
croak("panic: pthread_setspecific"); \
} STMT_END
#endif /* SET_THR */
#ifndef THR
# ifdef OLD_PTHREADS_API
-struct thread *getTHR _((void));
+struct perl_thread *getTHR _((void));
# define THR getTHR()
# else
-# define THR ((struct thread *) pthread_getspecific(thr_key))
+# define THR ((struct perl_thread *) pthread_getspecific(PL_thr_key))
# endif /* OLD_PTHREADS_API */
#endif /* THR */
+/*
+ * dTHR is performance-critical. Here, we only do the pthread_get_specific
+ * if there may be more than one thread in existence, otherwise we get thr
+ * from thrsv which is cached in the per-interpreter structure.
+ * Systems with very fast pthread_get_specific (which should be all systems
+ * but unfortunately isn't) may wish to simplify to "...*thr = THR".
+ */
#ifndef dTHR
-# define dTHR struct thread *thr = THR
+# define dTHR \
+ struct perl_thread *thr = PL_threadnum? THR : (struct perl_thread*)SvPVX(PL_thrsv)
#endif /* dTHR */
#ifndef INIT_THREADS
# endif
#endif
-#ifndef THREAD_RET_TYPE
-# define THREAD_RET_TYPE void *
-# define THREAD_RET_CAST(p) ((void *)(p))
-#endif /* THREAD_RET */
+/* Accessor for per-thread SVs */
+#define THREADSV(i) (thr->threadsvp[i])
-struct thread {
- /* The fields that used to be global */
- /* Important ones in the first cache line (if alignment is done right) */
- SV ** Tstack_sp;
-#ifdef OP_IN_REGISTER
- OP * Topsave;
-#else
- OP * Top;
-#endif
- SV ** Tcurpad;
- SV ** Tstack_base;
-
- SV ** Tstack_max;
-
- I32 * Tscopestack;
- I32 Tscopestack_ix;
- I32 Tscopestack_max;
-
- ANY * Tsavestack;
- I32 Tsavestack_ix;
- I32 Tsavestack_max;
-
- OP ** Tretstack;
- I32 Tretstack_ix;
- I32 Tretstack_max;
-
- I32 * Tmarkstack;
- I32 * Tmarkstack_ptr;
- I32 * Tmarkstack_max;
-
- SV * TSv;
- XPV * TXpv;
- struct stat Tstatbuf;
- struct tms Ttimesbuf;
-
- /* XXX What about regexp stuff? */
-
- /* Now the fields that used to be "per interpreter" (even when global) */
-
- /* XXX What about magic variables such as $/, $? and so on? */
- HV * Tdefstash;
- HV * Tcurstash;
-
- SV ** Ttmps_stack;
- I32 Ttmps_ix;
- I32 Ttmps_floor;
- I32 Ttmps_max;
-
- int Tin_eval;
- OP * Trestartop;
- int Tdelaymagic;
- bool Tdirty;
- U8 Tlocalizing;
- COP * Tcurcop;
-
- CONTEXT * Tcxstack;
- I32 Tcxstack_ix;
- I32 Tcxstack_max;
+/*
+ * LOCK_SV_MUTEX and UNLOCK_SV_MUTEX are performance-critical. Here, we
+ * try only locking them if there may be more than one thread in existence.
+ * Systems with very fast mutexes (and/or slow conditionals) may wish to
+ * remove the "if (threadnum) ..." test.
+ */
+#define LOCK_SV_MUTEX \
+ STMT_START { \
+ if (PL_threadnum) \
+ MUTEX_LOCK(&PL_sv_mutex); \
+ } STMT_END
- AV * Tcurstack;
- AV * Tmainstack;
- JMPENV * Ttop_env;
- I32 Trunlevel;
+#define UNLOCK_SV_MUTEX \
+ STMT_START { \
+ if (PL_threadnum) \
+ MUTEX_UNLOCK(&PL_sv_mutex); \
+ } STMT_END
- /* XXX Sort stuff, firstgv, secongv and so on? */
+/* Likewise for strtab_mutex */
+#define LOCK_STRTAB_MUTEX \
+ STMT_START { \
+ if (PL_threadnum) \
+ MUTEX_LOCK(&PL_strtab_mutex); \
+ } STMT_END
- SV * Toursv;
- HV * Tcvcache;
- perl_thread self; /* Underlying thread object */
- U32 flags;
- perl_mutex mutex; /* For the fields others can change */
- U32 tid;
- struct thread *next, *prev; /* Circular linked list of threads */
+#define UNLOCK_STRTAB_MUTEX \
+ STMT_START { \
+ if (PL_threadnum) \
+ MUTEX_UNLOCK(&PL_strtab_mutex); \
+ } STMT_END
-#ifdef ADD_THREAD_INTERN
- struct thread_intern i; /* Platform-dependent internals */
-#endif
- char trailing_nul; /* For the sake of thrsv, t->Toursv */
-};
+#ifndef THREAD_RET_TYPE
+# define THREAD_RET_TYPE void *
+# define THREAD_RET_CAST(p) ((void *)(p))
+#endif /* THREAD_RET */
-typedef struct thread *Thread;
/* Values and macros for thr->flags */
#define THRf_STATE_MASK 7
#define THRf_ZOMBIE 3
#define THRf_DEAD 4
-#define THRf_DIE_FATAL 8
+#define THRf_DID_DIE 8
/* ThrSTATE(t) and ThrSETSTATE(t) must only be called while holding t->mutex */
-#define ThrSTATE(t) ((t)->flags)
+#define ThrSTATE(t) ((t)->flags & THRf_STATE_MASK)
#define ThrSETSTATE(t, s) STMT_START { \
(t)->flags &= ~THRf_STATE_MASK; \
(t)->flags |= (s); \
- DEBUG_L(PerlIO_printf(PerlIO_stderr(), \
+ DEBUG_S(PerlIO_printf(PerlIO_stderr(), \
"thread %p set to state %d\n", (t), (s))); \
} STMT_END
#define MgCONDP(mg) (&((condpair_t *)(mg->mg_ptr))->cond)
#define MgOWNER(mg) ((condpair_t *)(mg->mg_ptr))->owner
-#undef stack_base
-#undef stack_sp
-#undef stack_max
-#undef curstack
-#undef mainstack
-#undef markstack
-#undef markstack_ptr
-#undef markstack_max
-#undef scopestack
-#undef scopestack_ix
-#undef scopestack_max
-#undef savestack
-#undef savestack_ix
-#undef savestack_max
-#undef retstack
-#undef retstack_ix
-#undef retstack_max
-#undef curcop
-#undef cxstack
-#undef cxstack_ix
-#undef cxstack_max
-#undef defstash
-#undef curstash
-#undef tmps_stack
-#undef tmps_floor
-#undef tmps_ix
-#undef tmps_max
-#undef curpad
-#undef Sv
-#undef Xpv
-#undef statbuf
-#undef timesbuf
-#undef top_env
-#undef runlevel
-#undef in_eval
-#undef restartop
-#undef delaymagic
-#undef dirty
-#undef localizing
-
-#define oursv (thr->Toursv)
-#define stack_base (thr->Tstack_base)
-#define stack_sp (thr->Tstack_sp)
-#define stack_max (thr->Tstack_max)
-#ifdef OP_IN_REGISTER
-#define opsave (thr->Topsave)
-#else
-#undef op
-#define op (thr->Top)
-#endif
-#define curcop (thr->Tcurcop)
-#define stack (thr->Tstack)
-#define curstack (thr->Tcurstack)
-#define mainstack (thr->Tmainstack)
-#define markstack (thr->Tmarkstack)
-#define markstack_ptr (thr->Tmarkstack_ptr)
-#define markstack_max (thr->Tmarkstack_max)
-#define scopestack (thr->Tscopestack)
-#define scopestack_ix (thr->Tscopestack_ix)
-#define scopestack_max (thr->Tscopestack_max)
-
-#define savestack (thr->Tsavestack)
-#define savestack_ix (thr->Tsavestack_ix)
-#define savestack_max (thr->Tsavestack_max)
-
-#define retstack (thr->Tretstack)
-#define retstack_ix (thr->Tretstack_ix)
-#define retstack_max (thr->Tretstack_max)
-
-#define cxstack (thr->Tcxstack)
-#define cxstack_ix (thr->Tcxstack_ix)
-#define cxstack_max (thr->Tcxstack_max)
-
-#define curpad (thr->Tcurpad)
-#define Sv (thr->TSv)
-#define Xpv (thr->TXpv)
-#define statbuf (thr->Tstatbuf)
-#define timesbuf (thr->Ttimesbuf)
-#define defstash (thr->Tdefstash)
-#define curstash (thr->Tcurstash)
-
-#define tmps_stack (thr->Ttmps_stack)
-#define tmps_ix (thr->Ttmps_ix)
-#define tmps_floor (thr->Ttmps_floor)
-#define tmps_max (thr->Ttmps_max)
-
-#define in_eval (thr->Tin_eval)
-#define restartop (thr->Trestartop)
-#define delaymagic (thr->Tdelaymagic)
-#define dirty (thr->Tdirty)
-#define localizing (thr->Tlocalizing)
-
-#define top_env (thr->Ttop_env)
-#define runlevel (thr->Trunlevel)
-
-#define cvcache (thr->Tcvcache)
#else
/* USE_THREADS is not defined */
#define MUTEX_LOCK(m)
#define COND_BROADCAST(c)
#define COND_WAIT(c, m)
#define COND_DESTROY(c)
+#define LOCK_SV_MUTEX
+#define UNLOCK_SV_MUTEX
+#define LOCK_STRTAB_MUTEX
+#define UNLOCK_STRTAB_MUTEX
#define THR
/* Rats: if dTHR is just blank then the subsequent ";" throws an error */
+#ifdef WIN32
+#define dTHR extern int Perl___notused
+#else
#define dTHR extern int errno
+#endif
#endif /* USE_THREADS */
https://perl5.git.perl.org / perl5.git / blobdiff