stan/jdk-24
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

8199741: NMT: Tag safepoint polling pages

Browse Source 
Added NMT tag for Safepoint polling pages

Reviewed-by: coleenp, shade
This commit is contained in:
Zhengyu Gu 2018-03-19 13:38:35 -04:00
parent 13869315f9
commit d574a06345
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/hotspot/share/runtime/safepointMechanism.cpp
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2017, 2018, 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
@ -27,6 +27,7 @@
#include "runtime/globals.hpp"
#include "runtime/os.hpp"
#include "runtime/safepointMechanism.inline.hpp"
#include "services/memTracker.hpp"
#include "utilities/globalDefinitions.hpp"
SafepointMechanism::PollingType SafepointMechanism::_polling_type = SafepointMechanism::_global_page_poll;
@ -50,6 +51,7 @@ void SafepointMechanism::default_initialize() {
const size_t allocation_size = 2 * page_size;
char* polling_page = os::reserve_memory(allocation_size, NULL, page_size);
os::commit_memory_or_exit(polling_page, allocation_size, false, "Unable to commit Safepoint polling page");
MemTracker::record_virtual_memory_type((address)polling_page, mtInternal);
char* bad_page = polling_page;
char* good_page = polling_page + page_size;