author | mgronlun |
Wed, 25 Sep 2019 22:40:41 +0200 | |
branch | JEP-349-branch |
changeset 58343 | ca19b94eac7a |
parent 54292 | c31faeacf00a |
child 59290 | 97d13893ec3c |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2019, Red Hat, Inc. All rights reserved. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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#include "precompiled.hpp" |
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#include "runtime/atomic.hpp" |
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#include "runtime/threadCritical.hpp" |
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#include "services/mallocTracker.hpp" |
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#include "services/memTracker.hpp" |
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#include "services/virtualMemoryTracker.hpp" |
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#include "services/threadStackTracker.hpp" |
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volatile size_t ThreadStackTracker::_thread_count = 0; |
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SortedLinkedList<SimpleThreadStackSite, ThreadStackTracker::compare_thread_stack_base>* ThreadStackTracker::_simple_thread_stacks = NULL; |
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bool ThreadStackTracker::late_initialize(NMT_TrackingLevel level) { |
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if (level == NMT_detail && !track_as_vm()) { |
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_simple_thread_stacks = new (std::nothrow, ResourceObj::C_HEAP, mtNMT) |
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SortedLinkedList<SimpleThreadStackSite, ThreadStackTracker::compare_thread_stack_base>(); |
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return (_simple_thread_stacks != NULL); |
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} |
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return true; |
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} |
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bool ThreadStackTracker::transition(NMT_TrackingLevel from, NMT_TrackingLevel to) { |
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assert (from != NMT_minimal, "cannot convert from the lowest tracking level to anything"); |
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if (to == NMT_minimal) { |
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assert(from == NMT_summary || from == NMT_detail, "Just check"); |
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ThreadCritical tc; |
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if (_simple_thread_stacks != NULL) { |
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delete _simple_thread_stacks; |
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_simple_thread_stacks = NULL; |
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} |
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} |
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return true; |
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} |
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int ThreadStackTracker::compare_thread_stack_base(const SimpleThreadStackSite& s1, const SimpleThreadStackSite& s2) { |
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return s1.base() - s2.base(); |
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} |
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void ThreadStackTracker::new_thread_stack(void* base, size_t size, const NativeCallStack& stack) { |
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assert(MemTracker::tracking_level() >= NMT_summary, "Must be"); |
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assert(base != NULL, "Should have been filtered"); |
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if (track_as_vm()) { |
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ThreadCritical tc; |
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VirtualMemoryTracker::add_reserved_region((address)base, size, stack, mtThreadStack); |
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_thread_count ++; |
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} else { |
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// Use a slot in mallocMemorySummary for thread stack bookkeeping |
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MallocMemorySummary::record_malloc(size, mtThreadStack); |
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if (MemTracker::tracking_level() == NMT_detail) { |
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ThreadCritical tc; |
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assert(_simple_thread_stacks != NULL, "Must be initialized"); |
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SimpleThreadStackSite site((address)base, size, stack); |
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_simple_thread_stacks->add(site); |
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} |
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} |
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} |
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void ThreadStackTracker::delete_thread_stack(void* base, size_t size) { |
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assert(MemTracker::tracking_level() >= NMT_summary, "Must be"); |
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assert(base != NULL, "Should have been filtered"); |
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if(track_as_vm()) { |
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ThreadCritical tc; |
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VirtualMemoryTracker::remove_released_region((address)base, size); |
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_thread_count--; |
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} else { |
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// Use a slot in mallocMemorySummary for thread stack bookkeeping |
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MallocMemorySummary::record_free(size, mtThreadStack); |
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if (MemTracker::tracking_level() == NMT_detail) { |
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ThreadCritical tc; |
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assert(_simple_thread_stacks != NULL, "Must be initialized"); |
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SimpleThreadStackSite site((address)base, size); |
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bool removed = _simple_thread_stacks->remove(site); |
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assert(removed, "Must exist"); |
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} |
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} |
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} |
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bool ThreadStackTracker::walk_simple_thread_stack_site(MallocSiteWalker* walker) { |
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if (!track_as_vm()) { |
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LinkedListImpl<MallocSite> _sites; |
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{ |
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ThreadCritical tc; |
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assert(_simple_thread_stacks != NULL, "Must be initialized"); |
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LinkedListIterator<SimpleThreadStackSite> itr(_simple_thread_stacks->head()); |
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const SimpleThreadStackSite* ts = itr.next(); |
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// Consolidate sites and convert to MallocSites, so we can piggyback into |
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// malloc snapshot |
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while (ts != NULL) { |
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MallocSite site(*ts->call_stack(), mtThreadStack); |
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MallocSite* exist = _sites.find(site); |
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if (exist != NULL) { |
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exist->allocate(ts->size()); |
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} else { |
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site.allocate(ts->size()); |
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_sites.add(site); |
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} |
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ts = itr.next(); |
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} |
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} |
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// Piggyback to malloc snapshot |
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LinkedListIterator<MallocSite> site_itr(_sites.head()); |
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const MallocSite* s = site_itr.next(); |
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while (s != NULL) { |
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walker->do_malloc_site(s); |
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s = site_itr.next(); |
c31faeacf00a
8204552: NMT: Separate thread stack tracking from virtual memory tracking
zgu
parents:
diff
changeset
|
130 |
} |
c31faeacf00a
8204552: NMT: Separate thread stack tracking from virtual memory tracking
zgu
parents:
diff
changeset
|
131 |
} |
c31faeacf00a
8204552: NMT: Separate thread stack tracking from virtual memory tracking
zgu
parents:
diff
changeset
|
132 |
return true; |
c31faeacf00a
8204552: NMT: Separate thread stack tracking from virtual memory tracking
zgu
parents:
diff
changeset
|
133 |
} |