354249f51e
More precise thread stack tracking on Linux and Windows Reviewed-by: coleenp, adinn, minqi
87 lines
2.9 KiB
C++
87 lines
2.9 KiB
C++
/*
|
|
* Copyright (c) 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
|
|
* under the terms of the GNU General Public License version 2 only, as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This code is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* version 2 for more details (a copy is included in the LICENSE file that
|
|
* accompanied this code).
|
|
*
|
|
* You should have received a copy of the GNU General Public License version
|
|
* 2 along with this work; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
* or visit www.oracle.com if you need additional information or have any
|
|
* questions.
|
|
*/
|
|
|
|
#include "precompiled.hpp"
|
|
|
|
// Included early because the NMT flags don't include it.
|
|
#include "utilities/macros.hpp"
|
|
|
|
#include "runtime/thread.hpp"
|
|
#include "services/memTracker.hpp"
|
|
#include "services/virtualMemoryTracker.hpp"
|
|
#include "utilities/globalDefinitions.hpp"
|
|
#include "unittest.hpp"
|
|
|
|
|
|
class ThreadStackTrackingTest {
|
|
public:
|
|
static void test() {
|
|
VirtualMemoryTracker::initialize(NMT_detail);
|
|
VirtualMemoryTracker::late_initialize(NMT_detail);
|
|
|
|
Thread* thr = Thread::current();
|
|
address stack_end = thr->stack_end();
|
|
size_t stack_size = thr->stack_size();
|
|
|
|
MemTracker::record_thread_stack(stack_end, stack_size);
|
|
|
|
VirtualMemoryTracker::add_reserved_region(stack_end, stack_size, CALLER_PC, mtThreadStack);
|
|
|
|
// snapshot current stack usage
|
|
VirtualMemoryTracker::snapshot_thread_stacks();
|
|
|
|
ReservedMemoryRegion* rmr = VirtualMemoryTracker::_reserved_regions->find(ReservedMemoryRegion(stack_end, stack_size));
|
|
ASSERT_TRUE(rmr != NULL);
|
|
|
|
ASSERT_EQ(rmr->base(), stack_end);
|
|
ASSERT_EQ(rmr->size(), stack_size);
|
|
|
|
CommittedRegionIterator iter = rmr->iterate_committed_regions();
|
|
int i = 0;
|
|
address i_addr = (address)&i;
|
|
|
|
// stack grows downward
|
|
address stack_top = stack_end + stack_size;
|
|
bool found_stack_top = false;
|
|
|
|
for (const CommittedMemoryRegion* region = iter.next(); region != NULL; region = iter.next()) {
|
|
if (region->base() + region->size() == stack_top) {
|
|
// This should be active part, "i" should be here
|
|
ASSERT_TRUE(i_addr < stack_top && i_addr >= region->base());
|
|
ASSERT_TRUE(region->size() <= stack_size);
|
|
found_stack_top = true;
|
|
}
|
|
|
|
i++;
|
|
}
|
|
|
|
// NMT was not turned on when the thread was created, so we don't have guard pages
|
|
ASSERT_TRUE(i == 1);
|
|
ASSERT_TRUE(found_stack_top);
|
|
}
|
|
};
|
|
|
|
TEST_VM(VirtualMemoryTracker, thread_stack_tracking) {
|
|
ThreadStackTrackingTest::test();
|
|
}
|