author | stefank |
Mon, 29 Jan 2018 15:11:33 +0100 | |
changeset 48815 | d80d521e9cb1 |
parent 47553 | 5d20359dd938 |
child 48818 | ec4a84ba2aaf |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2013, 2017, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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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 "memory/metaspace.hpp" |
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#include "runtime/atomic.hpp" |
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#include "runtime/os.hpp" |
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#include "runtime/threadCritical.hpp" |
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#include "services/memTracker.hpp" |
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#include "services/virtualMemoryTracker.hpp" |
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size_t VirtualMemorySummary::_snapshot[CALC_OBJ_SIZE_IN_TYPE(VirtualMemorySnapshot, size_t)]; |
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void VirtualMemorySummary::initialize() { |
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assert(sizeof(_snapshot) >= sizeof(VirtualMemorySnapshot), "Sanity Check"); |
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// Use placement operator new to initialize static data area. |
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::new ((void*)_snapshot) VirtualMemorySnapshot(); |
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} |
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SortedLinkedList<ReservedMemoryRegion, compare_reserved_region_base>* VirtualMemoryTracker::_reserved_regions; |
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int compare_committed_region(const CommittedMemoryRegion& r1, const CommittedMemoryRegion& r2) { |
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return r1.compare(r2); |
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} |
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int compare_reserved_region_base(const ReservedMemoryRegion& r1, const ReservedMemoryRegion& r2) { |
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return r1.compare(r2); |
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} |
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bool ReservedMemoryRegion::add_committed_region(address addr, size_t size, const NativeCallStack& stack) { |
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assert(addr != NULL, "Invalid address"); |
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assert(size > 0, "Invalid size"); |
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assert(contain_region(addr, size), "Not contain this region"); |
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if (all_committed()) return true; |
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CommittedMemoryRegion committed_rgn(addr, size, stack); |
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LinkedListNode<CommittedMemoryRegion>* node = _committed_regions.head(); |
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while (node != NULL) { |
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CommittedMemoryRegion* rgn = node->data(); |
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if (rgn->same_region(addr, size)) { |
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return true; |
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} |
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if (rgn->adjacent_to(addr, size)) { |
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if (rgn->call_stack()->equals(stack)) { |
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// the two adjacent regions have the same call stack, merge them |
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rgn->expand_region(addr, size); |
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VirtualMemorySummary::record_committed_memory(size, flag()); |
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// maybe merge with the next region |
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LinkedListNode<CommittedMemoryRegion>* next_node = node->next(); |
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if (next_node != NULL) { |
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CommittedMemoryRegion* next = next_node->data(); |
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if (next->call_stack()->equals(stack) && rgn->adjacent_to(next->base(), next->size())) { |
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// the two adjacent regions have the same call stack, merge them |
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rgn->expand_region(next->base(), next->size()); |
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// the merge next_node needs to be removed from the list |
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_committed_regions.remove(next_node); |
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} |
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} |
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return true; |
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} |
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} |
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if (rgn->overlap_region(addr, size)) { |
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// Clear a space for this region in the case it overlaps with any regions. |
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remove_uncommitted_region(addr, size); |
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break; // commit below |
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25946 | 93 |
} |
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if (rgn->end() >= addr + size){ |
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break; |
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} |
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node = node->next(); |
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} |
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// New committed region |
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VirtualMemorySummary::record_committed_memory(size, flag()); |
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return add_committed_region(committed_rgn); |
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} |
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void ReservedMemoryRegion::set_all_committed(bool b) { |
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if (all_committed() != b) { |
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_all_committed = b; |
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if (b) { |
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VirtualMemorySummary::record_committed_memory(size(), flag()); |
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} |
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} |
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} |
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bool ReservedMemoryRegion::remove_uncommitted_region(LinkedListNode<CommittedMemoryRegion>* node, |
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address addr, size_t size) { |
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assert(addr != NULL, "Invalid address"); |
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assert(size > 0, "Invalid size"); |
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CommittedMemoryRegion* rgn = node->data(); |
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assert(rgn->contain_region(addr, size), "Has to be contained"); |
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assert(!rgn->same_region(addr, size), "Can not be the same region"); |
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if (rgn->base() == addr || |
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rgn->end() == addr + size) { |
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rgn->exclude_region(addr, size); |
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return true; |
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} else { |
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// split this region |
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address top =rgn->end(); |
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// use this region for lower part |
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size_t exclude_size = rgn->end() - addr; |
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rgn->exclude_region(addr, exclude_size); |
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// higher part |
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address high_base = addr + size; |
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size_t high_size = top - high_base; |
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CommittedMemoryRegion high_rgn(high_base, high_size, *rgn->call_stack()); |
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LinkedListNode<CommittedMemoryRegion>* high_node = _committed_regions.add(high_rgn); |
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assert(high_node == NULL || node->next() == high_node, "Should be right after"); |
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return (high_node != NULL); |
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} |
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return false; |
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} |
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bool ReservedMemoryRegion::remove_uncommitted_region(address addr, size_t sz) { |
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// uncommit stack guard pages |
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if (flag() == mtThreadStack && !same_region(addr, sz)) { |
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return true; |
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} |
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assert(addr != NULL, "Invalid address"); |
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assert(sz > 0, "Invalid size"); |
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if (all_committed()) { |
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assert(_committed_regions.is_empty(), "Sanity check"); |
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assert(contain_region(addr, sz), "Reserved region does not contain this region"); |
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set_all_committed(false); |
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VirtualMemorySummary::record_uncommitted_memory(sz, flag()); |
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if (same_region(addr, sz)) { |
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return true; |
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} else { |
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CommittedMemoryRegion rgn(base(), size(), *call_stack()); |
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if (rgn.base() == addr || rgn.end() == (addr + sz)) { |
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rgn.exclude_region(addr, sz); |
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return add_committed_region(rgn); |
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} else { |
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// split this region |
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// top of the whole region |
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address top =rgn.end(); |
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// use this region for lower part |
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size_t exclude_size = rgn.end() - addr; |
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rgn.exclude_region(addr, exclude_size); |
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if (add_committed_region(rgn)) { |
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// higher part |
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address high_base = addr + sz; |
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size_t high_size = top - high_base; |
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CommittedMemoryRegion high_rgn(high_base, high_size, NativeCallStack::EMPTY_STACK); |
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return add_committed_region(high_rgn); |
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} else { |
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return false; |
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} |
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} |
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} |
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} else { |
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CommittedMemoryRegion del_rgn(addr, sz, *call_stack()); |
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address end = addr + sz; |
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LinkedListNode<CommittedMemoryRegion>* head = _committed_regions.head(); |
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LinkedListNode<CommittedMemoryRegion>* prev = NULL; |
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CommittedMemoryRegion* crgn; |
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while (head != NULL) { |
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crgn = head->data(); |
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if (crgn->same_region(addr, sz)) { |
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VirtualMemorySummary::record_uncommitted_memory(crgn->size(), flag()); |
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_committed_regions.remove_after(prev); |
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return true; |
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} |
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// del_rgn contains crgn |
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if (del_rgn.contain_region(crgn->base(), crgn->size())) { |
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VirtualMemorySummary::record_uncommitted_memory(crgn->size(), flag()); |
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head = head->next(); |
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_committed_regions.remove_after(prev); |
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continue; // don't update head or prev |
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} |
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// Found addr in the current crgn. There are 2 subcases: |
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if (crgn->contain_address(addr)) { |
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// (1) Found addr+size in current crgn as well. (del_rgn is contained in crgn) |
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if (crgn->contain_address(end - 1)) { |
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VirtualMemorySummary::record_uncommitted_memory(sz, flag()); |
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return remove_uncommitted_region(head, addr, sz); // done! |
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} else { |
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// (2) Did not find del_rgn's end in crgn. |
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size_t size = crgn->end() - del_rgn.base(); |
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crgn->exclude_region(addr, size); |
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VirtualMemorySummary::record_uncommitted_memory(size, flag()); |
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} |
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} else if (crgn->contain_address(end - 1)) { |
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// Found del_rgn's end, but not its base addr. |
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size_t size = del_rgn.end() - crgn->base(); |
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crgn->exclude_region(crgn->base(), size); |
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VirtualMemorySummary::record_uncommitted_memory(size, flag()); |
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return true; // should be done if the list is sorted properly! |
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231 |
} |
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232 |
||
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prev = head; |
234 |
head = head->next(); |
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} |
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236 |
} |
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return true; |
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} |
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240 |
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void ReservedMemoryRegion::move_committed_regions(address addr, ReservedMemoryRegion& rgn) { |
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assert(addr != NULL, "Invalid address"); |
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243 |
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// split committed regions |
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LinkedListNode<CommittedMemoryRegion>* head = |
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246 |
_committed_regions.head(); |
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247 |
LinkedListNode<CommittedMemoryRegion>* prev = NULL; |
|
248 |
||
249 |
while (head != NULL) { |
|
250 |
if (head->data()->base() >= addr) { |
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251 |
break; |
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252 |
} |
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prev = head; |
|
254 |
head = head->next(); |
|
255 |
} |
|
256 |
||
257 |
if (head != NULL) { |
|
258 |
if (prev != NULL) { |
|
259 |
prev->set_next(head->next()); |
|
260 |
} else { |
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261 |
_committed_regions.set_head(NULL); |
|
262 |
} |
|
263 |
} |
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264 |
||
265 |
rgn._committed_regions.set_head(head); |
|
266 |
} |
|
267 |
||
268 |
size_t ReservedMemoryRegion::committed_size() const { |
|
269 |
if (all_committed()) { |
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270 |
return size(); |
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271 |
} else { |
|
272 |
size_t committed = 0; |
|
273 |
LinkedListNode<CommittedMemoryRegion>* head = |
|
274 |
_committed_regions.head(); |
|
275 |
while (head != NULL) { |
|
276 |
committed += head->data()->size(); |
|
277 |
head = head->next(); |
|
278 |
} |
|
279 |
return committed; |
|
280 |
} |
|
281 |
} |
|
282 |
||
283 |
void ReservedMemoryRegion::set_flag(MEMFLAGS f) { |
|
284 |
assert((flag() == mtNone || flag() == f), "Overwrite memory type"); |
|
285 |
if (flag() != f) { |
|
286 |
VirtualMemorySummary::move_reserved_memory(flag(), f, size()); |
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287 |
VirtualMemorySummary::move_committed_memory(flag(), f, committed_size()); |
|
288 |
_flag = f; |
|
289 |
} |
|
290 |
} |
|
291 |
||
292 |
bool VirtualMemoryTracker::initialize(NMT_TrackingLevel level) { |
|
293 |
if (level >= NMT_summary) { |
|
294 |
VirtualMemorySummary::initialize(); |
|
295 |
} |
|
296 |
return true; |
|
297 |
} |
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bool VirtualMemoryTracker::late_initialize(NMT_TrackingLevel level) { |
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if (level >= NMT_summary) { |
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_reserved_regions = new (std::nothrow, ResourceObj::C_HEAP, mtNMT) |
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SortedLinkedList<ReservedMemoryRegion, compare_reserved_region_base>(); |
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return (_reserved_regions != NULL); |
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} |
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return true; |
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} |
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|
25946 | 308 |
bool VirtualMemoryTracker::add_reserved_region(address base_addr, size_t size, |
309 |
const NativeCallStack& stack, MEMFLAGS flag, bool all_committed) { |
|
310 |
assert(base_addr != NULL, "Invalid address"); |
|
311 |
assert(size > 0, "Invalid size"); |
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assert(_reserved_regions != NULL, "Sanity check"); |
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ReservedMemoryRegion rgn(base_addr, size, stack, flag); |
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ReservedMemoryRegion* reserved_rgn = _reserved_regions->find(rgn); |
25946 | 315 |
LinkedListNode<ReservedMemoryRegion>* node; |
316 |
if (reserved_rgn == NULL) { |
|
317 |
VirtualMemorySummary::record_reserved_memory(size, flag); |
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node = _reserved_regions->add(rgn); |
25946 | 319 |
if (node != NULL) { |
320 |
node->data()->set_all_committed(all_committed); |
|
321 |
return true; |
|
322 |
} else { |
|
323 |
return false; |
|
324 |
} |
|
325 |
} else { |
|
326 |
if (reserved_rgn->same_region(base_addr, size)) { |
|
327 |
reserved_rgn->set_call_stack(stack); |
|
328 |
reserved_rgn->set_flag(flag); |
|
329 |
return true; |
|
330 |
} else if (reserved_rgn->adjacent_to(base_addr, size)) { |
|
331 |
VirtualMemorySummary::record_reserved_memory(size, flag); |
|
332 |
reserved_rgn->expand_region(base_addr, size); |
|
333 |
reserved_rgn->set_call_stack(stack); |
|
334 |
return true; |
|
335 |
} else { |
|
336 |
// Overlapped reservation. |
|
337 |
// It can happen when the regions are thread stacks, as JNI |
|
338 |
// thread does not detach from VM before exits, and leads to |
|
339 |
// leak JavaThread object |
|
340 |
if (reserved_rgn->flag() == mtThreadStack) { |
|
341 |
guarantee(!CheckJNICalls, "Attached JNI thread exited without being detached"); |
|
342 |
// Overwrite with new region |
|
343 |
||
344 |
// Release old region |
|
345 |
VirtualMemorySummary::record_uncommitted_memory(reserved_rgn->committed_size(), reserved_rgn->flag()); |
|
346 |
VirtualMemorySummary::record_released_memory(reserved_rgn->size(), reserved_rgn->flag()); |
|
347 |
||
348 |
// Add new region |
|
349 |
VirtualMemorySummary::record_reserved_memory(rgn.size(), flag); |
|
350 |
||
351 |
*reserved_rgn = rgn; |
|
352 |
return true; |
|
353 |
} |
|
26146
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8055061: assert at share/vm/services/virtualMemoryTracker.cpp:332 Error: ShouldNotReachHere() when running NMT tests
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changeset
|
354 |
|
ce3202564442
8055061: assert at share/vm/services/virtualMemoryTracker.cpp:332 Error: ShouldNotReachHere() when running NMT tests
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|
355 |
// CDS mapping region. |
ce3202564442
8055061: assert at share/vm/services/virtualMemoryTracker.cpp:332 Error: ShouldNotReachHere() when running NMT tests
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changeset
|
356 |
// CDS reserves the whole region for mapping CDS archive, then maps each section into the region. |
ce3202564442
8055061: assert at share/vm/services/virtualMemoryTracker.cpp:332 Error: ShouldNotReachHere() when running NMT tests
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changeset
|
357 |
// NMT reports CDS as a whole. |
ce3202564442
8055061: assert at share/vm/services/virtualMemoryTracker.cpp:332 Error: ShouldNotReachHere() when running NMT tests
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changeset
|
358 |
if (reserved_rgn->flag() == mtClassShared) { |
ce3202564442
8055061: assert at share/vm/services/virtualMemoryTracker.cpp:332 Error: ShouldNotReachHere() when running NMT tests
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diff
changeset
|
359 |
assert(reserved_rgn->contain_region(base_addr, size), "Reserved CDS region should contain this mapping region"); |
ce3202564442
8055061: assert at share/vm/services/virtualMemoryTracker.cpp:332 Error: ShouldNotReachHere() when running NMT tests
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changeset
|
360 |
return true; |
ce3202564442
8055061: assert at share/vm/services/virtualMemoryTracker.cpp:332 Error: ShouldNotReachHere() when running NMT tests
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changeset
|
361 |
} |
ce3202564442
8055061: assert at share/vm/services/virtualMemoryTracker.cpp:332 Error: ShouldNotReachHere() when running NMT tests
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diff
changeset
|
362 |
|
31345
1bba15125d8d
8015086: add interned strings to the shared archive.
jiangli
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diff
changeset
|
363 |
// Mapped CDS string region. |
1bba15125d8d
8015086: add interned strings to the shared archive.
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changeset
|
364 |
// The string region(s) is part of the java heap. |
1bba15125d8d
8015086: add interned strings to the shared archive.
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diff
changeset
|
365 |
if (reserved_rgn->flag() == mtJavaHeap) { |
1bba15125d8d
8015086: add interned strings to the shared archive.
jiangli
parents:
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diff
changeset
|
366 |
assert(reserved_rgn->contain_region(base_addr, size), "Reserved heap region should contain this mapping region"); |
1bba15125d8d
8015086: add interned strings to the shared archive.
jiangli
parents:
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diff
changeset
|
367 |
return true; |
1bba15125d8d
8015086: add interned strings to the shared archive.
jiangli
parents:
27162
diff
changeset
|
368 |
} |
1bba15125d8d
8015086: add interned strings to the shared archive.
jiangli
parents:
27162
diff
changeset
|
369 |
|
26146
ce3202564442
8055061: assert at share/vm/services/virtualMemoryTracker.cpp:332 Error: ShouldNotReachHere() when running NMT tests
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changeset
|
370 |
ShouldNotReachHere(); |
ce3202564442
8055061: assert at share/vm/services/virtualMemoryTracker.cpp:332 Error: ShouldNotReachHere() when running NMT tests
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changeset
|
371 |
return false; |
25946 | 372 |
} |
373 |
} |
|
374 |
} |
|
375 |
||
376 |
void VirtualMemoryTracker::set_reserved_region_type(address addr, MEMFLAGS flag) { |
|
377 |
assert(addr != NULL, "Invalid address"); |
|
26136
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8054368: nsk/jdi/VirtualMachine/exit/exit002 crash with detail tracking on (NMT2)
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changeset
|
378 |
assert(_reserved_regions != NULL, "Sanity check"); |
25946 | 379 |
|
380 |
ReservedMemoryRegion rgn(addr, 1); |
|
26136
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changeset
|
381 |
ReservedMemoryRegion* reserved_rgn = _reserved_regions->find(rgn); |
25946 | 382 |
if (reserved_rgn != NULL) { |
383 |
assert(reserved_rgn->contain_address(addr), "Containment"); |
|
384 |
if (reserved_rgn->flag() != flag) { |
|
385 |
assert(reserved_rgn->flag() == mtNone, "Overwrite memory type"); |
|
386 |
reserved_rgn->set_flag(flag); |
|
387 |
} |
|
388 |
} |
|
389 |
} |
|
390 |
||
391 |
bool VirtualMemoryTracker::add_committed_region(address addr, size_t size, |
|
392 |
const NativeCallStack& stack) { |
|
393 |
assert(addr != NULL, "Invalid address"); |
|
394 |
assert(size > 0, "Invalid size"); |
|
26136
254c226e4402
8054368: nsk/jdi/VirtualMachine/exit/exit002 crash with detail tracking on (NMT2)
zgu
parents:
25946
diff
changeset
|
395 |
assert(_reserved_regions != NULL, "Sanity check"); |
254c226e4402
8054368: nsk/jdi/VirtualMachine/exit/exit002 crash with detail tracking on (NMT2)
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parents:
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diff
changeset
|
396 |
|
25946 | 397 |
ReservedMemoryRegion rgn(addr, size); |
26136
254c226e4402
8054368: nsk/jdi/VirtualMachine/exit/exit002 crash with detail tracking on (NMT2)
zgu
parents:
25946
diff
changeset
|
398 |
ReservedMemoryRegion* reserved_rgn = _reserved_regions->find(rgn); |
25946 | 399 |
|
400 |
assert(reserved_rgn != NULL, "No reserved region"); |
|
401 |
assert(reserved_rgn->contain_region(addr, size), "Not completely contained"); |
|
38935 | 402 |
bool result = reserved_rgn->add_committed_region(addr, size, stack); |
403 |
return result; |
|
25946 | 404 |
} |
405 |
||
406 |
bool VirtualMemoryTracker::remove_uncommitted_region(address addr, size_t size) { |
|
407 |
assert(addr != NULL, "Invalid address"); |
|
408 |
assert(size > 0, "Invalid size"); |
|
26136
254c226e4402
8054368: nsk/jdi/VirtualMachine/exit/exit002 crash with detail tracking on (NMT2)
zgu
parents:
25946
diff
changeset
|
409 |
assert(_reserved_regions != NULL, "Sanity check"); |
254c226e4402
8054368: nsk/jdi/VirtualMachine/exit/exit002 crash with detail tracking on (NMT2)
zgu
parents:
25946
diff
changeset
|
410 |
|
25946 | 411 |
ReservedMemoryRegion rgn(addr, size); |
26136
254c226e4402
8054368: nsk/jdi/VirtualMachine/exit/exit002 crash with detail tracking on (NMT2)
zgu
parents:
25946
diff
changeset
|
412 |
ReservedMemoryRegion* reserved_rgn = _reserved_regions->find(rgn); |
25946 | 413 |
assert(reserved_rgn != NULL, "No reserved region"); |
414 |
assert(reserved_rgn->contain_region(addr, size), "Not completely contained"); |
|
38935 | 415 |
bool result = reserved_rgn->remove_uncommitted_region(addr, size); |
416 |
return result; |
|
25946 | 417 |
} |
418 |
||
419 |
bool VirtualMemoryTracker::remove_released_region(address addr, size_t size) { |
|
420 |
assert(addr != NULL, "Invalid address"); |
|
421 |
assert(size > 0, "Invalid size"); |
|
26136
254c226e4402
8054368: nsk/jdi/VirtualMachine/exit/exit002 crash with detail tracking on (NMT2)
zgu
parents:
25946
diff
changeset
|
422 |
assert(_reserved_regions != NULL, "Sanity check"); |
25946 | 423 |
|
424 |
ReservedMemoryRegion rgn(addr, size); |
|
26136
254c226e4402
8054368: nsk/jdi/VirtualMachine/exit/exit002 crash with detail tracking on (NMT2)
zgu
parents:
25946
diff
changeset
|
425 |
ReservedMemoryRegion* reserved_rgn = _reserved_regions->find(rgn); |
25946 | 426 |
|
427 |
assert(reserved_rgn != NULL, "No reserved region"); |
|
428 |
||
429 |
// uncommit regions within the released region |
|
430 |
if (!reserved_rgn->remove_uncommitted_region(addr, size)) { |
|
431 |
return false; |
|
432 |
} |
|
433 |
||
35483
d9cf65a7fd2d
8146523: VirtualMemoryTracker::remove_released_region double count unmapped CDS shared memory
jiangli
parents:
33127
diff
changeset
|
434 |
if (reserved_rgn->flag() == mtClassShared && |
d9cf65a7fd2d
8146523: VirtualMemoryTracker::remove_released_region double count unmapped CDS shared memory
jiangli
parents:
33127
diff
changeset
|
435 |
reserved_rgn->contain_region(addr, size) && |
d9cf65a7fd2d
8146523: VirtualMemoryTracker::remove_released_region double count unmapped CDS shared memory
jiangli
parents:
33127
diff
changeset
|
436 |
!reserved_rgn->same_region(addr, size)) { |
d9cf65a7fd2d
8146523: VirtualMemoryTracker::remove_released_region double count unmapped CDS shared memory
jiangli
parents:
33127
diff
changeset
|
437 |
// This is an unmapped CDS region, which is part of the reserved shared |
d9cf65a7fd2d
8146523: VirtualMemoryTracker::remove_released_region double count unmapped CDS shared memory
jiangli
parents:
33127
diff
changeset
|
438 |
// memory region. |
d9cf65a7fd2d
8146523: VirtualMemoryTracker::remove_released_region double count unmapped CDS shared memory
jiangli
parents:
33127
diff
changeset
|
439 |
// See special handling in VirtualMemoryTracker::add_reserved_region also. |
d9cf65a7fd2d
8146523: VirtualMemoryTracker::remove_released_region double count unmapped CDS shared memory
jiangli
parents:
33127
diff
changeset
|
440 |
return true; |
d9cf65a7fd2d
8146523: VirtualMemoryTracker::remove_released_region double count unmapped CDS shared memory
jiangli
parents:
33127
diff
changeset
|
441 |
} |
25946 | 442 |
|
443 |
VirtualMemorySummary::record_released_memory(size, reserved_rgn->flag()); |
|
444 |
||
445 |
if (reserved_rgn->same_region(addr, size)) { |
|
26136
254c226e4402
8054368: nsk/jdi/VirtualMachine/exit/exit002 crash with detail tracking on (NMT2)
zgu
parents:
25946
diff
changeset
|
446 |
return _reserved_regions->remove(rgn); |
25946 | 447 |
} else { |
448 |
assert(reserved_rgn->contain_region(addr, size), "Not completely contained"); |
|
449 |
if (reserved_rgn->base() == addr || |
|
450 |
reserved_rgn->end() == addr + size) { |
|
451 |
reserved_rgn->exclude_region(addr, size); |
|
452 |
return true; |
|
453 |
} else { |
|
454 |
address top = reserved_rgn->end(); |
|
455 |
address high_base = addr + size; |
|
456 |
ReservedMemoryRegion high_rgn(high_base, top - high_base, |
|
457 |
*reserved_rgn->call_stack(), reserved_rgn->flag()); |
|
458 |
||
459 |
// use original region for lower region |
|
460 |
reserved_rgn->exclude_region(addr, top - addr); |
|
26136
254c226e4402
8054368: nsk/jdi/VirtualMachine/exit/exit002 crash with detail tracking on (NMT2)
zgu
parents:
25946
diff
changeset
|
461 |
LinkedListNode<ReservedMemoryRegion>* new_rgn = _reserved_regions->add(high_rgn); |
25946 | 462 |
if (new_rgn == NULL) { |
463 |
return false; |
|
464 |
} else { |
|
465 |
reserved_rgn->move_committed_regions(addr, *new_rgn->data()); |
|
466 |
return true; |
|
467 |
} |
|
468 |
} |
|
469 |
} |
|
470 |
} |
|
471 |
||
472 |
||
473 |
bool VirtualMemoryTracker::walk_virtual_memory(VirtualMemoryWalker* walker) { |
|
26136
254c226e4402
8054368: nsk/jdi/VirtualMachine/exit/exit002 crash with detail tracking on (NMT2)
zgu
parents:
25946
diff
changeset
|
474 |
assert(_reserved_regions != NULL, "Sanity check"); |
25946 | 475 |
ThreadCritical tc; |
27162
0a4a7276949b
8059100: SIGSEGV VirtualMemoryTracker::remove_released_region
coleenp
parents:
26149
diff
changeset
|
476 |
// Check that the _reserved_regions haven't been deleted. |
0a4a7276949b
8059100: SIGSEGV VirtualMemoryTracker::remove_released_region
coleenp
parents:
26149
diff
changeset
|
477 |
if (_reserved_regions != NULL) { |
0a4a7276949b
8059100: SIGSEGV VirtualMemoryTracker::remove_released_region
coleenp
parents:
26149
diff
changeset
|
478 |
LinkedListNode<ReservedMemoryRegion>* head = _reserved_regions->head(); |
0a4a7276949b
8059100: SIGSEGV VirtualMemoryTracker::remove_released_region
coleenp
parents:
26149
diff
changeset
|
479 |
while (head != NULL) { |
0a4a7276949b
8059100: SIGSEGV VirtualMemoryTracker::remove_released_region
coleenp
parents:
26149
diff
changeset
|
480 |
const ReservedMemoryRegion* rgn = head->peek(); |
0a4a7276949b
8059100: SIGSEGV VirtualMemoryTracker::remove_released_region
coleenp
parents:
26149
diff
changeset
|
481 |
if (!walker->do_allocation_site(rgn)) { |
0a4a7276949b
8059100: SIGSEGV VirtualMemoryTracker::remove_released_region
coleenp
parents:
26149
diff
changeset
|
482 |
return false; |
0a4a7276949b
8059100: SIGSEGV VirtualMemoryTracker::remove_released_region
coleenp
parents:
26149
diff
changeset
|
483 |
} |
0a4a7276949b
8059100: SIGSEGV VirtualMemoryTracker::remove_released_region
coleenp
parents:
26149
diff
changeset
|
484 |
head = head->next(); |
25946 | 485 |
} |
27162
0a4a7276949b
8059100: SIGSEGV VirtualMemoryTracker::remove_released_region
coleenp
parents:
26149
diff
changeset
|
486 |
} |
25946 | 487 |
return true; |
488 |
} |
|
489 |
||
490 |
// Transition virtual memory tracking level. |
|
491 |
bool VirtualMemoryTracker::transition(NMT_TrackingLevel from, NMT_TrackingLevel to) { |
|
27162
0a4a7276949b
8059100: SIGSEGV VirtualMemoryTracker::remove_released_region
coleenp
parents:
26149
diff
changeset
|
492 |
assert (from != NMT_minimal, "cannot convert from the lowest tracking level to anything"); |
0a4a7276949b
8059100: SIGSEGV VirtualMemoryTracker::remove_released_region
coleenp
parents:
26149
diff
changeset
|
493 |
if (to == NMT_minimal) { |
25946 | 494 |
assert(from == NMT_summary || from == NMT_detail, "Just check"); |
495 |
// Clean up virtual memory tracking data structures. |
|
496 |
ThreadCritical tc; |
|
27162
0a4a7276949b
8059100: SIGSEGV VirtualMemoryTracker::remove_released_region
coleenp
parents:
26149
diff
changeset
|
497 |
// Check for potential race with other thread calling transition |
26136
254c226e4402
8054368: nsk/jdi/VirtualMachine/exit/exit002 crash with detail tracking on (NMT2)
zgu
parents:
25946
diff
changeset
|
498 |
if (_reserved_regions != NULL) { |
254c226e4402
8054368: nsk/jdi/VirtualMachine/exit/exit002 crash with detail tracking on (NMT2)
zgu
parents:
25946
diff
changeset
|
499 |
delete _reserved_regions; |
254c226e4402
8054368: nsk/jdi/VirtualMachine/exit/exit002 crash with detail tracking on (NMT2)
zgu
parents:
25946
diff
changeset
|
500 |
_reserved_regions = NULL; |
254c226e4402
8054368: nsk/jdi/VirtualMachine/exit/exit002 crash with detail tracking on (NMT2)
zgu
parents:
25946
diff
changeset
|
501 |
} |
25946 | 502 |
} |
503 |
||
504 |
return true; |
|
505 |
} |
|
47553
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
506 |
|
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
507 |
// Metaspace Support |
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
508 |
MetaspaceSnapshot::MetaspaceSnapshot() { |
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
509 |
for (int index = (int)Metaspace::ClassType; index < (int)Metaspace::MetadataTypeCount; index ++) { |
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
510 |
Metaspace::MetadataType type = (Metaspace::MetadataType)index; |
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
511 |
assert_valid_metadata_type(type); |
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
512 |
_reserved_in_bytes[type] = 0; |
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
513 |
_committed_in_bytes[type] = 0; |
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
514 |
_used_in_bytes[type] = 0; |
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
515 |
_free_in_bytes[type] = 0; |
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
516 |
} |
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
517 |
} |
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
518 |
|
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
519 |
void MetaspaceSnapshot::snapshot(Metaspace::MetadataType type, MetaspaceSnapshot& mss) { |
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
520 |
assert_valid_metadata_type(type); |
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
521 |
|
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
522 |
mss._reserved_in_bytes[type] = MetaspaceAux::reserved_bytes(type); |
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
523 |
mss._committed_in_bytes[type] = MetaspaceAux::committed_bytes(type); |
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
524 |
mss._used_in_bytes[type] = MetaspaceAux::used_bytes(type); |
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
525 |
|
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
526 |
size_t free_in_bytes = (MetaspaceAux::capacity_bytes(type) - MetaspaceAux::used_bytes(type)) |
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
527 |
+ MetaspaceAux::free_chunks_total_bytes(type) |
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
528 |
+ MetaspaceAux::free_bytes(type); |
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
529 |
mss._free_in_bytes[type] = free_in_bytes; |
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
530 |
} |
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
531 |
|
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
532 |
void MetaspaceSnapshot::snapshot(MetaspaceSnapshot& mss) { |
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
533 |
snapshot(Metaspace::ClassType, mss); |
5d20359dd938
8186770: NMT: Report metadata information in NMT summary
zgu
parents:
47216
diff
changeset
|
534 |
if (Metaspace::using_class_space()) { |
5d20359dd938
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535 |
snapshot(Metaspace::NonClassType, mss); |
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8186770: NMT: Report metadata information in NMT summary
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changeset
|
536 |
} |
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8186770: NMT: Report metadata information in NMT summary
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parents:
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diff
changeset
|
537 |
} |