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gc.c: malloc_usable_size

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* gc.c (vm_xrealloc, vm_xfree): use malloc_usable_size() to obtain old
  size if available.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43760 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2013-11-21 09:49:05 +00:00
parent bb6607404a
commit 4305eb8e6c
3 changed files with 16 additions and 0 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
Thu Nov 21 18:49:02 2013 Nobuyoshi Nakada <nobu@ruby-lang.org>
* gc.c (vm_xrealloc, vm_xfree): use malloc_usable_size() to obtain old
size if available.
Thu Nov 21 18:47:29 2013 Nobuyoshi Nakada <nobu@ruby-lang.org>
* lib/delegate.rb (SimpleDelegator#__getobj__): target object must be set.

1
configure.in
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@ -1851,6 +1851,7 @@ AC_CHECK_FUNCS(llabs)
AC_CHECK_FUNCS(lockf)
AC_CHECK_FUNCS(log2)
AC_CHECK_FUNCS(lstat)
AC_CHECK_FUNCS(malloc_usable_size)
AC_CHECK_FUNCS(mblen)
AC_CHECK_FUNCS(memalign)
AC_CHECK_FUNCS(memrchr)

10
gc.c
View file

@ -5553,6 +5553,10 @@ vm_xrealloc(rb_objspace_t *objspace, void *ptr, size_t new_size, size_t old_size
return 0;
}
#ifdef HAVE_MALLOC_USABLE_SIZE
old_size = malloc_usable_size(ptr);
#endif
vm_malloc_increase(objspace, new_size, old_size, FALSE);
#if CALC_EXACT_MALLOC_SIZE
@ -5587,7 +5591,13 @@ vm_xfree(rb_objspace_t *objspace, void *ptr, size_t old_size)
ATOMIC_SIZE_SUB(objspace->malloc_params.allocated_size, cem_oldsize);
ATOMIC_SIZE_DEC(objspace->malloc_params.allocations);
}
#endif
#ifdef HAVE_MALLOC_USABLE_SIZE
old_size = malloc_usable_size(ptr);
#endif
#if CALC_EXACT_MALLOC_SIZE
if (CALC_EXACT_MALLOC_SIZE_CHECK_OLD_SIZE && old_size > 0 && cem_oldsize - sizeof(size_t) != old_size) {
fprintf(stderr, "vm_xfree: old_size mismatch: expected %d, but %d\n", (int)(cem_oldsize-sizeof(size_t)), (int)old_size);
}