From: Gurusamy Sarathy <gsar@cpan.org>
Date: Wed, 8 Mar 2000 12:08:17 +0000 (+0000)
Subject: add missing locks for op refcounts
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=534825c439e9bf017f3cdaf88d284d58d5eac6bd;p=p5sagit%2Fp5-mst-13.2.git

add missing locks for op refcounts

p4raw-id: //depot/perl@5610
---

diff --git a/dosish.h b/dosish.h
index 7b2a1bd..be7020d 100644
--- a/dosish.h
+++ b/dosish.h
@@ -30,7 +30,7 @@
 #  endif
 #endif	/* DJGPP */
 
-#define PERL_SYS_TERM() MALLOC_TERM
+#define PERL_SYS_TERM() OP_REFCNT_TERM; MALLOC_TERM
 #define dXSUB_SYS
 
 /*
diff --git a/embedvar.h b/embedvar.h
index f754940..f8387c5 100644
--- a/embedvar.h
+++ b/embedvar.h
@@ -1648,6 +1648,7 @@
 #define PL_do_undump		(PL_Vars.Gdo_undump)
 #define PL_hexdigit		(PL_Vars.Ghexdigit)
 #define PL_malloc_mutex		(PL_Vars.Gmalloc_mutex)
+#define PL_op_mutex		(PL_Vars.Gop_mutex)
 #define PL_patleave		(PL_Vars.Gpatleave)
 #define PL_thr_key		(PL_Vars.Gthr_key)
 
@@ -1659,6 +1660,7 @@
 #define PL_Gdo_undump		PL_do_undump
 #define PL_Ghexdigit		PL_hexdigit
 #define PL_Gmalloc_mutex	PL_malloc_mutex
+#define PL_Gop_mutex		PL_op_mutex
 #define PL_Gpatleave		PL_patleave
 #define PL_Gthr_key		PL_thr_key
 
diff --git a/makedef.pl b/makedef.pl
index 1170ba5..0aec81e 100644
--- a/makedef.pl
+++ b/makedef.pl
@@ -413,6 +413,7 @@ unless ($define{'USE_5005THREADS'}) {
 unless ($define{'USE_ITHREADS'}) {
     skip_symbols [qw(
 		    PL_ptr_table
+		    PL_op_mutex
 		    Perl_dirp_dup
 		    Perl_cx_dup
 		    Perl_si_dup
diff --git a/op.c b/op.c
index 11ff181..d6a16db 100644
--- a/op.c
+++ b/op.c
@@ -22,19 +22,6 @@
 
 /* #define PL_OP_SLAB_ALLOC */
 
-/* XXXXXX testing */
-#ifdef USE_ITHREADS
-#  define OP_REFCNT_LOCK		NOOP
-#  define OP_REFCNT_UNLOCK		NOOP
-#  define OpREFCNT_set(o,n)		((o)->op_targ = (n))
-#  define OpREFCNT_dec(o)		(--(o)->op_targ)
-#else
-#  define OP_REFCNT_LOCK		NOOP
-#  define OP_REFCNT_UNLOCK		NOOP
-#  define OpREFCNT_set(o,n)		NOOP
-#  define OpREFCNT_dec(o)		0
-#endif
-
 #ifdef PL_OP_SLAB_ALLOC 
 #define SLAB_SIZE 8192
 static char    *PL_OpPtr  = NULL;
diff --git a/op.h b/op.h
index c9ec2df..da03aa4 100644
--- a/op.h
+++ b/op.h
@@ -401,3 +401,20 @@ struct loop {
 #define OA_SCALARREF 7
 #define OA_OPTIONAL 8
 
+#ifdef USE_ITHREADS
+#  define OP_REFCNT_INIT		MUTEX_INIT(&PL_op_mutex)
+#  define OP_REFCNT_LOCK		MUTEX_LOCK(&PL_op_mutex)
+#  define OP_REFCNT_UNLOCK		MUTEX_UNLOCK(&PL_op_mutex)
+#  define OP_REFCNT_TERM		MUTEX_DESTROY(&PL_op_mutex)
+#  define OpREFCNT_set(o,n)		((o)->op_targ = (n))
+#  define OpREFCNT_inc(o)		((o) ? (++(o)->op_targ, (o)) : Nullop)
+#  define OpREFCNT_dec(o)		(--(o)->op_targ)
+#else
+#  define OP_REFCNT_INIT		NOOP
+#  define OP_REFCNT_LOCK		NOOP
+#  define OP_REFCNT_UNLOCK		NOOP
+#  define OP_REFCNT_TERM		NOOP
+#  define OpREFCNT_set(o,n)		NOOP
+#  define OpREFCNT_inc(o)		(o)
+#  define OpREFCNT_dec(o)		0
+#endif
diff --git a/perl.c b/perl.c
index 2dbfc8e..715f4da 100644
--- a/perl.c
+++ b/perl.c
@@ -64,8 +64,12 @@ static I32 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen);
 	    PERL_SET_INTERP(my_perl);		\
 	    INIT_THREADS;			\
 	    ALLOC_THREAD_KEY;			\
+	    PERL_SET_THX(my_perl);		\
+	    OP_REFCNT_INIT;			\
+	}					\
+	else {					\
+	    PERL_SET_THX(my_perl);		\
 	}					\
-	PERL_SET_THX(my_perl);			\
     } STMT_END
 #  else
 #  define INIT_TLS_AND_INTERP \
diff --git a/perlapi.h b/perlapi.h
index 70a2187..5e5ac28 100644
--- a/perlapi.h
+++ b/perlapi.h
@@ -878,6 +878,8 @@ START_EXTERN_C
 #define PL_hexdigit		(*Perl_Ghexdigit_ptr(NULL))
 #undef  PL_malloc_mutex
 #define PL_malloc_mutex		(*Perl_Gmalloc_mutex_ptr(NULL))
+#undef  PL_op_mutex
+#define PL_op_mutex		(*Perl_Gop_mutex_ptr(NULL))
 #undef  PL_patleave
 #define PL_patleave		(*Perl_Gpatleave_ptr(NULL))
 #undef  PL_thr_key
diff --git a/perlvars.h b/perlvars.h
index 4df31bb..bd07adc 100644
--- a/perlvars.h
+++ b/perlvars.h
@@ -34,3 +34,7 @@ PERLVARI(Gdo_undump,	bool,	FALSE)	/* -u or dump seen? */
 #if defined(MYMALLOC) && (defined(USE_THREADS) || defined(USE_ITHREADS))
 PERLVAR(Gmalloc_mutex,	perl_mutex)	/* Mutex for malloc */
 #endif
+
+#if defined(USE_ITHREADS)
+PERLVAR(Gop_mutex,	perl_mutex)	/* Mutex for op refcounting */
+#endif
diff --git a/sv.c b/sv.c
index 6f40d6f..ff21757 100644
--- a/sv.c
+++ b/sv.c
@@ -6382,10 +6382,6 @@ Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV
 #  include "error: USE_THREADS and USE_ITHREADS are incompatible"
 #endif
 
-#ifndef OpREFCNT_inc
-#  define OpREFCNT_inc(o)	((o) ? (++(o)->op_targ, (o)) : Nullop)
-#endif
-
 #ifndef GpREFCNT_inc
 #  define GpREFCNT_inc(gp)	((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
 #endif
diff --git a/unixish.h b/unixish.h
index 24da429..1168d29 100644
--- a/unixish.h
+++ b/unixish.h
@@ -135,7 +135,7 @@
 #endif
 
 #ifndef PERL_SYS_TERM
-#define PERL_SYS_TERM()		MALLOC_TERM
+#define PERL_SYS_TERM()		OP_REFCNT_TERM; MALLOC_TERM
 #endif
 
 #define BIT_BUCKET "/dev/null"
diff --git a/vms/vmsish.h b/vms/vmsish.h
index a09d2be..6c5c506 100644
--- a/vms/vmsish.h
+++ b/vms/vmsish.h
@@ -257,7 +257,7 @@
 
 #define BIT_BUCKET "_NLA0:"
 #define PERL_SYS_INIT(c,v)	vms_image_init((c),(v)); MALLOC_INIT
-#define PERL_SYS_TERM()		MALLOC_TERM
+#define PERL_SYS_TERM()		OP_REFCNT_TERM; MALLOC_TERM
 #define dXSUB_SYS
 #define HAS_KILL
 #define HAS_WAIT