Mercurial > hg > truffle
annotate agent/src/os/win32/ioUtils.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) 2000, 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 #include <ctype.h> | |
| 26 #include <string.h> | |
| 27 #include "ioUtils.hpp" | |
| 28 #include "IOBuf.hpp" | |
| 29 | |
| 30 bool | |
| 31 scanInt(char** data, int* num) { | |
| 32 *num = 0; | |
| 33 | |
| 34 // Skip whitespace | |
| 35 while ((**data != 0) && (isspace(**data))) { | |
| 36 ++*data; | |
| 37 } | |
| 38 | |
| 39 if (**data == 0) { | |
| 40 return false; | |
| 41 } | |
| 42 | |
| 43 while ((**data != 0) && (!isspace(**data))) { | |
| 44 char cur = **data; | |
| 45 if ((cur < '0') || (cur > '9')) { | |
| 46 return false; | |
| 47 } | |
| 48 *num *= 10; | |
| 49 *num += cur - '0'; | |
| 50 ++*data; | |
| 51 } | |
| 52 | |
| 53 return true; | |
| 54 } | |
| 55 | |
| 56 bool | |
| 57 scanUnsignedLong(char** data, unsigned long* num) { | |
| 58 *num = 0; | |
| 59 | |
| 60 // Skip whitespace | |
| 61 while ((**data != 0) && (isspace(**data))) { | |
| 62 ++*data; | |
| 63 } | |
| 64 | |
| 65 if (**data == 0) { | |
| 66 return false; | |
| 67 } | |
| 68 | |
| 69 while ((**data != 0) && (!isspace(**data))) { | |
| 70 char cur = **data; | |
| 71 if ((cur < '0') || (cur > '9')) { | |
| 72 return false; | |
| 73 } | |
| 74 *num *= 10; | |
| 75 *num += cur - '0'; | |
| 76 ++*data; | |
| 77 } | |
| 78 | |
| 79 return true; | |
| 80 } | |
| 81 | |
| 82 bool | |
| 83 charToNibble(char ascii, int* value) { | |
| 84 if (ascii >= '0' && ascii <= '9') { | |
| 85 *value = ascii - '0'; | |
| 86 return true; | |
| 87 } else if (ascii >= 'A' && ascii <= 'F') { | |
| 88 *value = 10 + ascii - 'A'; | |
| 89 return true; | |
| 90 } else if (ascii >= 'a' && ascii <= 'f') { | |
| 91 *value = 10 + ascii - 'a'; | |
| 92 return true; | |
| 93 } | |
| 94 | |
| 95 return false; | |
| 96 } | |
| 97 | |
| 98 bool | |
| 99 scanAddress(char** data, unsigned long* addr) { | |
| 100 *addr = 0; | |
| 101 | |
| 102 // Skip whitespace | |
| 103 while ((**data != 0) && (isspace(**data))) { | |
| 104 ++*data; | |
| 105 } | |
| 106 | |
| 107 if (**data == 0) { | |
| 108 return false; | |
| 109 } | |
| 110 | |
| 111 if (strncmp(*data, "0x", 2) != 0) { | |
| 112 return false; | |
| 113 } | |
| 114 | |
| 115 *data += 2; | |
| 116 | |
| 117 while ((**data != 0) && (!isspace(**data))) { | |
| 118 int val; | |
| 119 bool res = charToNibble(**data, &val); | |
| 120 if (!res) { | |
| 121 return false; | |
| 122 } | |
| 123 *addr <<= 4; | |
| 124 *addr |= val; | |
| 125 ++*data; | |
| 126 } | |
| 127 | |
| 128 return true; | |
| 129 } | |
| 130 | |
| 131 bool | |
| 132 scanAndSkipBinEscapeChar(char** data) { | |
| 133 // Skip whitespace | |
| 134 while ((**data != 0) && (isspace(**data))) { | |
| 135 ++*data; | |
| 136 } | |
| 137 | |
| 138 if (!IOBuf::isBinEscapeChar(**data)) { | |
| 139 return false; | |
| 140 } | |
| 141 | |
| 142 ++*data; | |
| 143 | |
| 144 return true; | |
| 145 } | |
| 146 | |
| 147 bool | |
| 148 scanBinUnsignedLong(char** data, unsigned long* num) { | |
| 149 *num = 0; | |
| 150 for (int i = 0; i < 4; i++) { | |
| 151 unsigned char val = (unsigned char) **data; | |
| 152 *num = (*num << 8) | val; | |
| 153 ++*data; | |
| 154 } | |
| 155 return true; | |
| 156 } |