Mercurial > hg > graal-jvmci-8
diff src/share/vm/memory/allocation.inline.hpp @ 2250:f7de3327c683
7017124: Fix some VM stats to avoid 32-bit overflow
Summary: Added new method inc_stat_counter() to increment long statistic values and use atomic long load and store.
Reviewed-by: dholmes, jrose, phh, never
| author | kvn |
|---|---|
| date | Mon, 07 Feb 2011 10:34:39 -0800 |
| parents | f95d63e2154a |
| children | bf29934d2f4f |
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--- a/src/share/vm/memory/allocation.inline.hpp Mon Feb 07 10:25:39 2011 -0800 +++ b/src/share/vm/memory/allocation.inline.hpp Mon Feb 07 10:34:39 2011 -0800 @@ -1,5 +1,5 @@ /* - * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it @@ -32,6 +32,12 @@ void trace_heap_malloc(size_t size, const char* name, void *p); void trace_heap_free(void *p); +// Increments unsigned long value for statistics (not atomic on MP). +inline void inc_stat_counter(volatile julong* dest, julong add_value) { + julong value = Atomic::load((volatile jlong*)dest); + value += add_value; + Atomic::store((jlong)value, (volatile jlong*)dest); +} // allocate using malloc; will fail if no memory available inline char* AllocateHeap(size_t size, const char* name = NULL) {