Changeset: 7f47a148fd51 for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=7f47a148fd51
Modified Files:
gdk/gdk_utils.c
Branch: Jul2017
Log Message:
Stop allocating memory with GDKmalloc/realloc when GDK_vm_maxsize is reached.
Just like we already stop with GDKmmap/mremap.
diffs (26 lines):
diff --git a/gdk/gdk_utils.c b/gdk/gdk_utils.c
--- a/gdk/gdk_utils.c
+++ b/gdk/gdk_utils.c
@@ -1579,6 +1579,10 @@ GDKmalloc_internal(size_t size)
return NULL;
}
#endif
+ if (GDKvm_cursize() + size >= GDK_vm_maxsize) {
+ GDKerror("allocating too much memory\n");
+ return NULL;
+ }
/* pad to multiple of eight bytes and add some extra space to
* write real size in front; when debugging, also allocate
@@ -1716,6 +1720,11 @@ GDKrealloc(void *s, size_t size)
nsize = (size + 7) & ~7;
asize = ((size_t *) s)[-1]; /* how much allocated last */
+ if (nsize > asize &&
+ GDKvm_cursize() + nsize - asize >= GDK_vm_maxsize) {
+ GDKerror("allocating too much memory\n");
+ return NULL;
+ }
#ifndef NDEBUG
assert((asize & 2) == 0); /* check against duplicate free */
/* check for out-of-bounds writes */
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