--- a/hotspot/src/os/windows/vm/os_windows.cpp Tue Dec 09 09:55:39 2008 -0500
+++ b/hotspot/src/os/windows/vm/os_windows.cpp Wed Dec 10 15:14:29 2008 -0800
@@ -2020,10 +2020,11 @@
if (UnguardOnExecutionViolation > 0 && addr != last_addr &&
(UnguardOnExecutionViolation > 1 || os::address_is_in_vm(addr))) {
- // Unguard and retry
+ // Set memory to RWX and retry
address page_start =
(address) align_size_down((intptr_t) addr, (intptr_t) page_size);
- bool res = os::unguard_memory((char*) page_start, page_size);
+ bool res = os::protect_memory((char*) page_start, page_size,
+ os::MEM_PROT_RWX);
if (PrintMiscellaneous && Verbose) {
char buf[256];
@@ -2755,12 +2756,12 @@
bool os::guard_memory(char* addr, size_t bytes) {
DWORD old_status;
- return VirtualProtect(addr, bytes, PAGE_EXECUTE_READWRITE | PAGE_GUARD, &old_status) != 0;
+ return VirtualProtect(addr, bytes, PAGE_READWRITE | PAGE_GUARD, &old_status) != 0;
}
bool os::unguard_memory(char* addr, size_t bytes) {
DWORD old_status;
- return VirtualProtect(addr, bytes, PAGE_EXECUTE_READWRITE, &old_status) != 0;
+ return VirtualProtect(addr, bytes, PAGE_READWRITE, &old_status) != 0;
}
void os::realign_memory(char *addr, size_t bytes, size_t alignment_hint) { }