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* gc.c: use VALGRIND_MAKE_MEM_UNDEFINED to detect use of collected

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objects if valgrind is available.  It cannot detect first 2 words 
  because they are used as the free list.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@13113 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
akr 2007-08-19 04:34:44 +00:00
parent 0a02ad5e2e
commit 1d23c250f0
2 changed files with 15 additions and 0 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
Sun Aug 19 13:31:40 2007 Tanaka Akira <akr@fsij.org>
* gc.c: use VALGRIND_MAKE_MEM_UNDEFINED to detect use of collected
objects if valgrind is available. It cannot detect first 2 words
because they are used as the free list.
Sun Aug 19 13:13:52 2007 Koichi Sasada <ko1@atdot.net> Sun Aug 19 13:13:52 2007 Koichi Sasada <ko1@atdot.net>
* compile.c (iseq_compile_each/NODE_RESBODY): fix to add * compile.c (iseq_compile_each/NODE_RESBODY): fix to add

9
gc.c
View file

@ -40,8 +40,12 @@
# ifndef VALGRIND_MAKE_MEM_DEFINED # ifndef VALGRIND_MAKE_MEM_DEFINED
# define VALGRIND_MAKE_MEM_DEFINED(p, n) VALGRIND_MAKE_READABLE(p, n) # define VALGRIND_MAKE_MEM_DEFINED(p, n) VALGRIND_MAKE_READABLE(p, n)
# endif # endif
# ifndef VALGRIND_MAKE_MEM_UNDEFINED
# define VALGRIND_MAKE_MEM_UNDEFINED(p, n) VALGRIND_MAKE_WRITABLE(p, n)
# endif
#else #else
# define VALGRIND_MAKE_MEM_DEFINED(p, n) /* empty */ # define VALGRIND_MAKE_MEM_DEFINED(p, n) /* empty */
# define VALGRIND_MAKE_MEM_UNDEFINED(p, n) /* empty */
#endif #endif
int rb_io_fptr_finalize(struct rb_io_t*); int rb_io_fptr_finalize(struct rb_io_t*);
@ -1099,6 +1103,7 @@ finalize_list(RVALUE *p)
RVALUE *tmp = p->as.free.next; RVALUE *tmp = p->as.free.next;
run_final((VALUE)p); run_final((VALUE)p);
if (!FL_TEST(p, FL_SINGLETON)) { /* not freeing page */ if (!FL_TEST(p, FL_SINGLETON)) { /* not freeing page */
VALGRIND_MAKE_MEM_UNDEFINED((void*)p, sizeof(RVALUE));
p->as.free.flags = 0; p->as.free.flags = 0;
p->as.free.next = freelist; p->as.free.next = freelist;
freelist = p; freelist = p;
@ -1168,6 +1173,7 @@ gc_sweep(void)
final_list = p; final_list = p;
} }
else { else {
VALGRIND_MAKE_MEM_UNDEFINED((void*)p, sizeof(RVALUE));
p->as.free.flags = 0; p->as.free.flags = 0;
p->as.free.next = freelist; p->as.free.next = freelist;
freelist = p; freelist = p;
@ -1218,6 +1224,7 @@ gc_sweep(void)
void void
rb_gc_force_recycle(VALUE p) rb_gc_force_recycle(VALUE p)
{ {
VALGRIND_MAKE_MEM_UNDEFINED((void*)p, sizeof(RVALUE));
RANY(p)->as.free.flags = 0; RANY(p)->as.free.flags = 0;
RANY(p)->as.free.next = freelist; RANY(p)->as.free.next = freelist;
freelist = RANY(p); freelist = RANY(p);
@ -2001,10 +2008,12 @@ rb_gc_call_finalizer_at_exit(void)
else if (RANY(p)->as.data.dfree) { else if (RANY(p)->as.data.dfree) {
(*RANY(p)->as.data.dfree)(DATA_PTR(p)); (*RANY(p)->as.data.dfree)(DATA_PTR(p));
} }
VALGRIND_MAKE_MEM_UNDEFINED((void*)p, sizeof(RVALUE));
} }
else if (BUILTIN_TYPE(p) == T_FILE) { else if (BUILTIN_TYPE(p) == T_FILE) {
if (rb_io_fptr_finalize(RANY(p)->as.file.fptr)) { if (rb_io_fptr_finalize(RANY(p)->as.file.fptr)) {
p->as.free.flags = 0; p->as.free.flags = 0;
VALGRIND_MAKE_MEM_UNDEFINED((void*)p, sizeof(RVALUE));
} }
} }
p++; p++;