add deprecation warning for C<my $x if foo> and C<foo && (my $x)>

[perl5.git] / thread.h

diff --git a/thread.h b/thread.h
index a1e8fdc..00e4d76 100644 (file)
--- a/thread.h
+++ b/thread.h
@@ -1,4 +1,13 @@
-#if defined(USE_THREADS) || defined(USE_ITHREADS)
+/*    thread.h
+ *
+ *    Copyright (C) 1999, 2000, 2001, 2002, by Larry Wall and others
+ *
+ *    You may distribute under the terms of either the GNU General Public
+ *    License or the Artistic License, as specified in the README file.
+ *
+ */
+
+#if defined(USE_ITHREADS)
 
 #if defined(VMS)
 #include <builtins.h>
@@ -31,6 +40,11 @@
 #    ifdef __OPEN_VM
 #      define pthread_addr_t void *
 #    endif
+#    ifdef OEMVS
+#      define pthread_addr_t void *
+#      define pthread_create(t,a,s,d)        pthread_create(t,&(a),s,d)
+#      define pthread_keycreate              pthread_key_create
+#    endif
 #    ifdef VMS
 #      define pthread_attr_init(a) pthread_attr_create(a)
 #      define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_setdetach_np(a,s)
@@ -48,7 +62,7 @@
 #      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(__OPEN_VM)
+#    if defined(DJGPP) || defined(__OPEN_VM) || defined(OEMVS)
 #      define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_attr_setdetachstate(a,&(s))
 #      define YIELD pthread_yield(NULL)
 #    endif
@@ -78,7 +92,7 @@
 #endif
 
 #ifdef DGUX
-#  define THREAD_CREATE_NEEDS_STACK (16*1024)
+#  define THREAD_CREATE_NEEDS_STACK (32*1024)
 #endif
 
 #ifdef I_MACH_CTHREADS
@@ -257,14 +271,14 @@
  * It would fail if the key were bogus, but if the key were bogus then
  * Really Bad Things would be happening anyway. --dan */
 #if (defined(__ALPHA) && (__VMS_VER >= 70000000)) || \
-    (defined(__alpha) && defined(__osf__)) /* Available only on >= 4.0 */
+    (defined(__alpha) && defined(__osf__) && !defined(__GNUC__)) /* Available only on >= 4.0 */
 #  define HAS_PTHREAD_UNCHECKED_GETSPECIFIC_NP /* Configure test needed */
 #endif
 
 #ifdef HAS_PTHREAD_UNCHECKED_GETSPECIFIC_NP
 #  define PTHREAD_GETSPECIFIC(key) pthread_unchecked_getspecific_np(key)
 #else
-#  define PTHREAD_GETSPECIFIC(key) pthread_getspecific(key)
+#    define PTHREAD_GETSPECIFIC(key) pthread_getspecific(key)
 #endif
 
 #ifndef PERL_GET_CONTEXT
@@ -303,8 +317,13 @@
 #endif
 
 #ifndef PTHREAD_ATFORK
-#  define PTHREAD_ATFORK(prepare,parent,child)                 \
-    pthread_atfork(prepare,parent,child)
+#  ifdef HAS_PTHREAD_ATFORK
+#    define PTHREAD_ATFORK(prepare,parent,child)               \
+       pthread_atfork(prepare,parent,child)
+#  else
+#    define PTHREAD_ATFORK(prepare,parent,child)               \
+       NOOP
+#  endif
 #endif
 
 #ifndef THREAD_RET_TYPE
@@ -312,62 +331,10 @@
 #  define THREAD_RET_CAST(p)   ((void *)(p))
 #endif /* THREAD_RET */
 
-#if defined(USE_THREADS)
-
-/* Accessor for per-thread SVs */
-#  define THREADSV(i) (thr->threadsvp[i])
-
-/*
- * 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.
- * XXX do NOT use C<if (PL_threadnum) ...> -- it sets up race conditions!
- */
-#  define LOCK_SV_MUTEX                MUTEX_LOCK(&PL_sv_mutex)
-#  define UNLOCK_SV_MUTEX      MUTEX_UNLOCK(&PL_sv_mutex)
-#  define LOCK_STRTAB_MUTEX    MUTEX_LOCK(&PL_strtab_mutex)
-#  define UNLOCK_STRTAB_MUTEX  MUTEX_UNLOCK(&PL_strtab_mutex)
-#  define LOCK_CRED_MUTEX      MUTEX_LOCK(&PL_cred_mutex)
-#  define UNLOCK_CRED_MUTEX    MUTEX_UNLOCK(&PL_cred_mutex)
-#  define LOCK_FDPID_MUTEX     MUTEX_LOCK(&PL_fdpid_mutex)
-#  define UNLOCK_FDPID_MUTEX   MUTEX_UNLOCK(&PL_fdpid_mutex)
-#  define LOCK_SV_LOCK_MUTEX   MUTEX_LOCK(&PL_sv_lock_mutex)
-#  define UNLOCK_SV_LOCK_MUTEX MUTEX_UNLOCK(&PL_sv_lock_mutex)
-
-/* Values and macros for thr->flags */
-#define THRf_STATE_MASK        7
-#define THRf_R_JOINABLE        0
-#define THRf_R_JOINED  1
-#define THRf_R_DETACHED        2
-#define THRf_ZOMBIE    3
-#define THRf_DEAD      4
-
-#define THRf_DID_DIE   8
-
-/* ThrSTATE(t) and ThrSETSTATE(t) must only be called while holding t->mutex */
-#define ThrSTATE(t) ((t)->flags & THRf_STATE_MASK)
-#define ThrSETSTATE(t, s) STMT_START {         \
-       (t)->flags &= ~THRf_STATE_MASK;         \
-       (t)->flags |= (s);                      \
-       DEBUG_S(PerlIO_printf(Perl_debug_log,   \
-                             "thread %p set to state %d\n", (t), (s))); \
-    } STMT_END
+#  define LOCK_DOLLARZERO_MUTEX                MUTEX_LOCK(&PL_dollarzero_mutex)
+#  define UNLOCK_DOLLARZERO_MUTEX      MUTEX_UNLOCK(&PL_dollarzero_mutex)
 
-typedef struct condpair {
-    perl_mutex mutex;          /* Protects all other fields */
-    perl_cond  owner_cond;     /* For when owner changes at all */
-    perl_cond  cond;           /* For cond_signal and cond_broadcast */
-    Thread     owner;          /* Currently owning thread */
-} condpair_t;
-
-#define MgMUTEXP(mg) (&((condpair_t *)(mg->mg_ptr))->mutex)
-#define MgOWNERCONDP(mg) (&((condpair_t *)(mg->mg_ptr))->owner_cond)
-#define MgCONDP(mg) (&((condpair_t *)(mg->mg_ptr))->cond)
-#define MgOWNER(mg) ((condpair_t *)(mg->mg_ptr))->owner
-
-#endif /* USE_THREADS */
-#endif /* USE_THREADS || USE_ITHREADS */
+#endif /* USE_ITHREADS */
 
 #ifndef MUTEX_LOCK
 #  define MUTEX_LOCK(m)
@@ -445,6 +412,14 @@ typedef struct condpair {
 #  define UNLOCK_SV_LOCK_MUTEX
 #endif
 
+#ifndef LOCK_DOLLARZERO_MUTEX
+#  define LOCK_DOLLARZERO_MUTEX
+#endif
+
+#ifndef UNLOCK_DOLLARZERO_MUTEX
+#  define UNLOCK_DOLLARZERO_MUTEX
+#endif
+
 /* THR, SET_THR, and dTHR are there for compatibility with old versions */
 #ifndef THR
 #  define THR          PERL_GET_THX
@@ -461,7 +436,3 @@ typedef struct condpair {
 #ifndef INIT_THREADS
 #  define INIT_THREADS NOOP
 #endif
-
-#ifndef PTHREAD_ATFORK
-#  define PTHREAD_ATFORK(prepare,parent,child) NOOP
-#endif