Changeset: 48d5a5381005 for MonetDB
URL: http://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=48d5a5381005
Modified Files:
gdk/gdk_heap.c
Branch: default
Log Message:
Remove underlying mmapped file
The actual unmap of the pages is left to the OS, because
otherwise it blocks the current thread, waiting for
this possible expensive IO operation.
diffs (16 lines):
diff --git a/gdk/gdk_heap.c b/gdk/gdk_heap.c
--- a/gdk/gdk_heap.c
+++ b/gdk/gdk_heap.c
@@ -586,6 +586,12 @@ HEAPfree_(Heap *h, int free_file)
if (h->storage == STORE_MEM) { /* plain memory */
HEAPDEBUG fprintf(stderr, "#HEAPfree " SZFMT " " SZFMT
" " PTRFMT "%s\n", h->size, h->maxsize, PTRFMTCAST h->base, h->base &&
((ssize_t*) h->base)[-1] < 0 ? " VM" : "");
GDKfree(h->base);
+ } else if (free_file) {
+ /* inform O/S as soon as possible that we're
+ * not interested in the data: no better way
+ * than deleting the underlying file */
+ GDKunlink(BATDIR, h->filename, NULL);
+ //GDKmunmap(h->base, h->maxsize); let the OS do the
unmapping
} else { /* mapped file, or STORE_PRIV */
int ret = HEAPcacheAdd(h->base, h->maxsize,
h->filename, h->storage, free_file);
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