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8059100: SIGSEGV VirtualMemoryTracker::remove_released_region

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Disallow increasing native memory tracking level

Reviewed-by: hseigel, ctornqvi, gtriantafill
This commit is contained in:
Coleen Phillimore 2014-10-10 19:36:12 +00:00
parent fe03f41db8
commit 3a86f9cd27
12 changed files with 134 additions and 119 deletions
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23
hotspot/src/share/vm/services/memTracker.hpp
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@ -70,6 +70,7 @@ class MemTracker : AllStatic {
static inline void release_thread_stack(void* addr, size_t size) { }
static void final_report(outputStream*) { }
static void error_report(outputStream*) { }
};
#else
@ -270,13 +271,20 @@ class MemTracker : AllStatic {
// other tools.
static inline Mutex* query_lock() { return _query_lock; }
// Make a final report and shutdown.
// This function generates summary report without creating snapshots,
// to avoid additional memory allocation. It uses native memory summary
// counters, and makes adjustment to them, once the adjustment is made,
// the counters are no longer accurate. As the result, this function
// should only be used for final reporting before shutting down.
static void final_report(outputStream*);
// Make a final report or report for hs_err file.
static void error_report(outputStream* output) {
if (tracking_level() >= NMT_summary) {
report(true, output); // just print summary for error case.
}
}
static void final_report(outputStream* output) {
NMT_TrackingLevel level = tracking_level();
if (level >= NMT_summary) {
report(level == NMT_summary, output);
}
}
// Stored baseline
static inline MemBaseline& get_baseline() {
@ -291,6 +299,7 @@ class MemTracker : AllStatic {
private:
static NMT_TrackingLevel init_tracking_level();
static void report(bool summary_only, outputStream* output);
private:
// Tracking level