Mercurial > hg > graal-compiler
annotate agent/src/os/win32/Reaper.cpp @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
| author | trims |
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| date | Thu, 27 May 2010 19:08:38 -0700 |
| parents | a61af66fc99e |
| children |
| rev | line source |
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| 0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 2000, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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6941466: Oracle rebranding changes for Hotspot repositories
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
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6941466: Oracle rebranding changes for Hotspot repositories
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 #include <iostream> | |
| 26 #include "Reaper.hpp" | |
| 27 | |
| 28 using namespace std; | |
| 29 | |
| 30 Reaper::Reaper(ReaperCB* cb) { | |
| 31 InitializeCriticalSection(&crit); | |
| 32 event = CreateEvent(NULL, TRUE, FALSE, NULL); | |
| 33 this->cb = cb; | |
| 34 | |
| 35 active = false; | |
| 36 shouldShutDown = false; | |
| 37 } | |
| 38 | |
| 39 bool | |
| 40 Reaper::start() { | |
| 41 bool result = false; | |
| 42 | |
| 43 EnterCriticalSection(&crit); | |
| 44 | |
| 45 if (!active) { | |
| 46 DWORD id; | |
| 47 HANDLE reaper = CreateThread(NULL, 0, &Reaper::reaperThreadEntry, | |
| 48 this, 0, &id); | |
| 49 if (reaper != NULL) { | |
| 50 result = true; | |
| 51 } | |
| 52 } | |
| 53 | |
| 54 LeaveCriticalSection(&crit); | |
| 55 | |
| 56 return result; | |
| 57 } | |
| 58 | |
| 59 bool | |
| 60 Reaper::stop() { | |
| 61 bool result = false; | |
| 62 | |
| 63 EnterCriticalSection(&crit); | |
| 64 | |
| 65 if (active) { | |
| 66 shouldShutDown = true; | |
| 67 SetEvent(event); | |
| 68 while (active) { | |
| 69 Sleep(1); | |
| 70 } | |
| 71 shouldShutDown = false; | |
| 72 result = true; | |
| 73 } | |
| 74 | |
| 75 LeaveCriticalSection(&crit); | |
| 76 | |
| 77 return result; | |
| 78 } | |
| 79 | |
| 80 void | |
| 81 Reaper::registerProcess(HANDLE processHandle, void* userData) { | |
| 82 ProcessInfo info; | |
| 83 | |
| 84 info.handle = processHandle; | |
| 85 info.userData = userData; | |
| 86 | |
| 87 EnterCriticalSection(&crit); | |
| 88 | |
| 89 procInfo.push_back(info); | |
| 90 SetEvent(event); | |
| 91 | |
| 92 LeaveCriticalSection(&crit); | |
| 93 } | |
| 94 | |
| 95 void | |
| 96 Reaper::reaperThread() { | |
| 97 while (!shouldShutDown) { | |
| 98 // Take atomic snapshot of the current process list and user data | |
| 99 EnterCriticalSection(&crit); | |
| 100 | |
| 101 int num = procInfo.size(); | |
| 102 HANDLE* handleList = new HANDLE[1 + num]; | |
| 103 void** dataList = new void*[num]; | |
| 104 for (int i = 0; i < num; i++) { | |
| 105 handleList[i] = procInfo[i].handle; | |
| 106 dataList[i] = procInfo[i].userData; | |
| 107 } | |
| 108 | |
| 109 LeaveCriticalSection(&crit); | |
| 110 | |
| 111 // Topmost handle becomes the event object, so other threads can | |
| 112 // signal this one to notice differences in the above list (or | |
| 113 // shut down) | |
| 114 handleList[num] = event; | |
| 115 | |
| 116 // Wait for these objects | |
| 117 DWORD idx = WaitForMultipleObjects(1 + num, handleList, | |
| 118 FALSE, INFINITE); | |
| 119 if ((idx >= WAIT_OBJECT_0) && (idx <= WAIT_OBJECT_0 + num)) { | |
| 120 idx -= WAIT_OBJECT_0; | |
| 121 if (idx < num) { | |
| 122 // A process exited (i.e., it wasn't that we were woken up | |
| 123 // just because the event went off) | |
| 124 (*cb)(dataList[idx]); | |
| 125 // Remove this process from the list (NOTE: requires that | |
| 126 // ordering does not change, i.e., that all additions are to | |
| 127 // the back of the process list) | |
| 128 EnterCriticalSection(&crit); | |
| 129 | |
| 130 std::vector<ProcessInfo>::iterator iter = procInfo.begin(); | |
| 131 iter += idx; | |
| 132 procInfo.erase(iter); | |
| 133 | |
| 134 LeaveCriticalSection(&crit); | |
| 135 } else { | |
| 136 // Notification from other thread | |
| 137 ResetEvent(event); | |
| 138 } | |
| 139 } else { | |
| 140 // Unexpected return value. For now, warn. | |
| 141 cerr << "Reaper::reaperThread(): unexpected return value " | |
| 142 << idx << " from WaitForMultipleObjects" << endl; | |
| 143 } | |
| 144 | |
| 145 // Clean up these lists | |
| 146 delete[] handleList; | |
| 147 delete[] dataList; | |
| 148 } | |
| 149 | |
| 150 // Time to shut down | |
| 151 active = false; | |
| 152 } | |
| 153 | |
| 154 DWORD WINAPI | |
| 155 Reaper::reaperThreadEntry(LPVOID data) { | |
| 156 Reaper* reaper = (Reaper*) data; | |
| 157 reaper->reaperThread(); | |
| 158 return 0; | |
| 159 } |