Mercurial > hg > truffle
view agent/src/os/win32/Reaper.cpp @ 1666:5cbac8938c4c
6956639: G1: assert(cached_ptr != card_ptr) failed: shouldn't be, concurrentG1Refine.cpp:307
Summary: During concurrent refinment, filter cards in young regions after it has been determined that the region has been allocated from and the young type of the region has been set.
Reviewed-by: iveresov, tonyp, jcoomes
author | johnc |
---|---|
date | Mon, 19 Jul 2010 11:06:34 -0700 |
parents | c18cbe5936b8 |
children |
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/* * Copyright (c) 2000, 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 <iostream> #include "Reaper.hpp" using namespace std; Reaper::Reaper(ReaperCB* cb) { InitializeCriticalSection(&crit); event = CreateEvent(NULL, TRUE, FALSE, NULL); this->cb = cb; active = false; shouldShutDown = false; } bool Reaper::start() { bool result = false; EnterCriticalSection(&crit); if (!active) { DWORD id; HANDLE reaper = CreateThread(NULL, 0, &Reaper::reaperThreadEntry, this, 0, &id); if (reaper != NULL) { result = true; } } LeaveCriticalSection(&crit); return result; } bool Reaper::stop() { bool result = false; EnterCriticalSection(&crit); if (active) { shouldShutDown = true; SetEvent(event); while (active) { Sleep(1); } shouldShutDown = false; result = true; } LeaveCriticalSection(&crit); return result; } void Reaper::registerProcess(HANDLE processHandle, void* userData) { ProcessInfo info; info.handle = processHandle; info.userData = userData; EnterCriticalSection(&crit); procInfo.push_back(info); SetEvent(event); LeaveCriticalSection(&crit); } void Reaper::reaperThread() { while (!shouldShutDown) { // Take atomic snapshot of the current process list and user data EnterCriticalSection(&crit); int num = procInfo.size(); HANDLE* handleList = new HANDLE[1 + num]; void** dataList = new void*[num]; for (int i = 0; i < num; i++) { handleList[i] = procInfo[i].handle; dataList[i] = procInfo[i].userData; } LeaveCriticalSection(&crit); // Topmost handle becomes the event object, so other threads can // signal this one to notice differences in the above list (or // shut down) handleList[num] = event; // Wait for these objects DWORD idx = WaitForMultipleObjects(1 + num, handleList, FALSE, INFINITE); if ((idx >= WAIT_OBJECT_0) && (idx <= WAIT_OBJECT_0 + num)) { idx -= WAIT_OBJECT_0; if (idx < num) { // A process exited (i.e., it wasn't that we were woken up // just because the event went off) (*cb)(dataList[idx]); // Remove this process from the list (NOTE: requires that // ordering does not change, i.e., that all additions are to // the back of the process list) EnterCriticalSection(&crit); std::vector<ProcessInfo>::iterator iter = procInfo.begin(); iter += idx; procInfo.erase(iter); LeaveCriticalSection(&crit); } else { // Notification from other thread ResetEvent(event); } } else { // Unexpected return value. For now, warn. cerr << "Reaper::reaperThread(): unexpected return value " << idx << " from WaitForMultipleObjects" << endl; } // Clean up these lists delete[] handleList; delete[] dataList; } // Time to shut down active = false; } DWORD WINAPI Reaper::reaperThreadEntry(LPVOID data) { Reaper* reaper = (Reaper*) data; reaper->reaperThread(); return 0; }