Mercurial > hg > graal-jvmci-8

diff src/share/vm/gc_implementation/parallelScavenge/psVirtualspace.cpp @ 237:1fdb98a17101

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
6716785: implicit null checks not triggering with CompressedOops Summary: allocate alignment-sized page(s) below java heap so that memory accesses at heap_base+1page give signal and cause an implicit null check Reviewed-by: kvn, jmasa, phh, jcoomes
author coleenp
date Sat, 19 Jul 2008 17:38:22 -0400
parents a61af66fc99e
children 9ee9cf798b59
line wrap: on
line diff
--- a/src/share/vm/gc_implementation/parallelScavenge/psVirtualspace.cpp	Fri Jul 11 01:14:44 2008 -0700
+++ b/src/share/vm/gc_implementation/parallelScavenge/psVirtualspace.cpp	Sat Jul 19 17:38:22 2008 -0400
@@ -71,13 +71,8 @@
 
 void PSVirtualSpace::release() {
   DEBUG_ONLY(PSVirtualSpaceVerifier this_verifier(this));
-  if (reserved_low_addr() != NULL) {
-    if (special()) {
-      os::release_memory_special(reserved_low_addr(), reserved_size());
-    } else {
-      (void)os::release_memory(reserved_low_addr(), reserved_size());
-    }
-  }
+  // This may not release memory it didn't reserve.
+  // Use rs.release() to release the underlying memory instead.
   _reserved_low_addr = _reserved_high_addr = NULL;
   _committed_low_addr = _committed_high_addr = NULL;
   _special = false;