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8038212: Method::is_valid_method() check has performance regression impact for stackwalking

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Only prune metaspace virtual spaces at safepoint so walking them is safe outside a safepoint.

Reviewed-by: mgerdin, mgronlun, hseigel, stefank
This commit is contained in:
Coleen Phillimore 2014-05-15 18:23:26 -04:00
parent cc3c656cf1
commit c336175c94
13 changed files with 84 additions and 72 deletions
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2
hotspot/src/share/vm/utilities/globalDefinitions.hpp
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@ -1385,7 +1385,7 @@ inline intptr_t p2i(const void * p) {
// All C++ compilers that we know of have the vtbl pointer in the first
// word. If there are exceptions, this function needs to be made compiler
// specific.
static inline void* dereference_vptr(void* addr) {
static inline void* dereference_vptr(const void* addr) {
return *(void**)addr;
}