Mercurial > hg > truffle
annotate agent/src/os/win32/libInfo.cpp @ 1994:6cd6d394f280
7001033: assert(gch->gc_cause() == GCCause::_scavenge_alot || !gch->incremental_collection_failed())
7002546: regression on SpecJbb2005 on 7b118 comparing to 7b117 on small heaps
Summary: Relaxed assertion checking related to incremental_collection_failed flag to allow for ExplicitGCInvokesConcurrent behaviour where we do not want a failing scavenge to bail to a stop-world collection. Parameterized incremental_collection_will_fail() so we can selectively use, or not use, as appropriate, the statistical prediction at specific use sites. This essentially reverts the scavenge bail-out logic to what it was prior to some recent changes that had inadvertently started using the statistical prediction which can be noisy in the presence of bursty loads. Added some associated verbose non-product debugging messages.
Reviewed-by: johnc, tonyp
| author | ysr |
|---|---|
| date | Tue, 07 Dec 2010 21:55:53 -0800 |
| parents | c18cbe5936b8 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
2 * Copyright (c) 2001, 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 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 // Disable too-long symbol warnings | |
| 26 #pragma warning ( disable : 4786 ) | |
| 27 | |
| 28 #include "libInfo.hpp" | |
| 29 #include "nt4internals.hpp" | |
| 30 #include "isNT4.hpp" | |
| 31 #include "toolHelp.hpp" | |
| 32 #include <assert.h> | |
| 33 | |
| 34 using namespace std; | |
| 35 | |
| 36 typedef void LibInfoImplFunc(DWORD pid, vector<LibInfo>& info); | |
| 37 | |
| 38 static void libInfoImplNT4(DWORD pid, vector<LibInfo>& info); | |
| 39 static void libInfoImplToolHelp(DWORD pid, vector<LibInfo>& info); | |
| 40 | |
| 41 void | |
| 42 libInfo(DWORD pid, vector<LibInfo>& info) { | |
| 43 static LibInfoImplFunc* impl = NULL; | |
| 44 | |
| 45 if (impl == NULL) { | |
| 46 // See which operating system we're on | |
| 47 impl = (isNT4() ? &libInfoImplNT4 : &libInfoImplToolHelp); | |
| 48 } | |
| 49 | |
| 50 assert(impl != NULL); | |
| 51 | |
| 52 (*impl)(pid, info); | |
| 53 } | |
| 54 | |
| 55 static ULONG | |
| 56 ModuleCount(NT4::PDEBUG_BUFFER db) { | |
| 57 return db->ModuleInformation ? *PULONG(db->ModuleInformation) : 0; | |
| 58 } | |
| 59 | |
| 60 #define MAX2(a, b) (((a) < (b)) ? (b) : (a)) | |
| 61 | |
| 62 static void | |
| 63 libInfoImplNT4(DWORD pid, vector<LibInfo>& info) { | |
| 64 static EnumProcessModulesFunc* enumFunc = NULL; | |
| 65 static GetModuleFileNameExFunc* fnFunc = NULL; | |
| 66 static GetModuleInformationFunc* infoFunc = NULL; | |
| 67 | |
| 68 if (enumFunc == NULL) { | |
| 69 HMODULE dll = loadPSAPIDLL(); | |
| 70 | |
| 71 enumFunc = (EnumProcessModulesFunc*) GetProcAddress(dll, "EnumProcessModules"); | |
| 72 fnFunc = (GetModuleFileNameExFunc*) GetProcAddress(dll, "GetModuleFileNameExA"); | |
| 73 infoFunc = (GetModuleInformationFunc*) GetProcAddress(dll, "GetModuleInformation"); | |
| 74 | |
| 75 assert(enumFunc != NULL); | |
| 76 assert(fnFunc != NULL); | |
| 77 assert(infoFunc != NULL); | |
| 78 } | |
| 79 | |
| 80 static HMODULE* mods = new HMODULE[256]; | |
| 81 static int numMods = 256; | |
| 82 | |
| 83 if (mods == NULL) { | |
| 84 mods = new HMODULE[numMods]; | |
| 85 if (mods == NULL) { | |
| 86 return; | |
| 87 } | |
| 88 } | |
| 89 | |
| 90 bool done = false; | |
| 91 | |
| 92 HANDLE proc = OpenProcess(PROCESS_ALL_ACCESS, FALSE, pid); | |
| 93 if (proc == NULL) { | |
| 94 return; | |
| 95 } | |
| 96 | |
| 97 do { | |
| 98 DWORD bufSize = numMods * sizeof(HMODULE); | |
| 99 DWORD neededSize; | |
| 100 | |
| 101 if (!(*enumFunc)(proc, mods, bufSize, &neededSize)) { | |
| 102 // Enum failed | |
| 103 CloseHandle(proc); | |
| 104 return; | |
| 105 } | |
| 106 | |
| 107 int numFetched = neededSize / sizeof(HMODULE); | |
| 108 | |
| 109 if (numMods < numFetched) { | |
| 110 // Grow buffer | |
| 111 numMods = MAX2(numFetched, 2 * numMods); | |
| 112 delete[] mods; | |
| 113 mods = new HMODULE[numMods]; | |
| 114 if (mods == NULL) { | |
| 115 CloseHandle(proc); | |
| 116 return; | |
| 117 } | |
| 118 } else { | |
| 119 char filename[MAX_PATH]; | |
| 120 MODULEINFO modInfo; | |
| 121 | |
| 122 // Iterate through and fetch each one's info | |
| 123 for (int i = 0; i < numFetched; i++) { | |
| 124 if (!(*fnFunc)(proc, mods[i], filename, MAX_PATH)) { | |
| 125 CloseHandle(proc); | |
| 126 return; | |
| 127 } | |
| 128 | |
| 129 if (!(*infoFunc)(proc, mods[i], &modInfo, sizeof(MODULEINFO))) { | |
| 130 CloseHandle(proc); | |
| 131 return; | |
| 132 } | |
| 133 | |
| 134 info.push_back(LibInfo(string(filename), (void*) modInfo.lpBaseOfDll)); | |
| 135 } | |
| 136 | |
| 137 done = true; | |
| 138 } | |
| 139 } while (!done); | |
| 140 | |
| 141 CloseHandle(proc); | |
| 142 return; | |
| 143 } | |
| 144 | |
| 145 void | |
| 146 libInfoImplToolHelp(DWORD pid, vector<LibInfo>& info) { | |
| 147 using namespace ToolHelp; | |
| 148 | |
| 149 static CreateToolhelp32SnapshotFunc* snapshotFunc = NULL; | |
| 150 static Module32FirstFunc* firstFunc = NULL; | |
| 151 static Module32NextFunc* nextFunc = NULL; | |
| 152 | |
| 153 if (snapshotFunc == NULL) { | |
| 154 HMODULE dll = loadDLL(); | |
| 155 | |
| 156 snapshotFunc = | |
| 157 (CreateToolhelp32SnapshotFunc*) GetProcAddress(dll, | |
| 158 "CreateToolhelp32Snapshot"); | |
| 159 | |
| 160 firstFunc = (Module32FirstFunc*) GetProcAddress(dll, | |
| 161 "Module32First"); | |
| 162 | |
| 163 nextFunc = (Module32NextFunc*) GetProcAddress(dll, | |
| 164 "Module32Next"); | |
| 165 | |
| 166 assert(snapshotFunc != NULL); | |
| 167 assert(firstFunc != NULL); | |
| 168 assert(nextFunc != NULL); | |
| 169 } | |
| 170 | |
| 171 HANDLE snapshot = (*snapshotFunc)(TH32CS_SNAPMODULE, pid); | |
| 172 if (snapshot == (HANDLE) -1) { | |
| 173 // Error occurred during snapshot | |
| 174 return; | |
| 175 } | |
| 176 | |
| 177 // Iterate | |
| 178 MODULEENTRY32 module; | |
| 179 if ((*firstFunc)(snapshot, &module)) { | |
| 180 do { | |
| 181 info.push_back(LibInfo(string(module.szExePath), (void*) module.modBaseAddr)); | |
| 182 } while ((*nextFunc)(snapshot, &module)); | |
| 183 } | |
| 184 | |
| 185 CloseHandle(snapshot); | |
| 186 } |