Mercurial > hg > truffle
annotate src/os/linux/vm/jvm_linux.h @ 12986:1b422ef5288a
8025728: Missing volatile specifier for field G1AllocRegion::_alloc_region
Summary: The field G1AllocRegion::_alloc_region needs to be declared volatile as it is used with that intention. Otherwise the compiler may generate the code that reloads the value which might have changed in the meantime, leading to spurious crashes.
Reviewed-by: iveresov, simonis, tschatzl
Contributed-by: Axel Siebenborn <axel.siebenborn@sap.com>
| author | tschatzl |
|---|---|
| date | Wed, 23 Oct 2013 10:23:06 +0200 |
| parents | 11c26bfcf8c7 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 1999, 2010, 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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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef OS_LINUX_VM_JVM_LINUX_H |
| 26 #define OS_LINUX_VM_JVM_LINUX_H | |
| 27 | |
| 0 | 28 /* |
| 29 // HotSpot integration note: | |
| 30 // | |
| 31 // This is derived from the JDK classic file: | |
| 32 // "$JDK/src/solaris/javavm/export/jvm_md.h":15 (ver. 1.10 98/04/22) | |
| 33 // All local includes have been commented out. | |
| 34 */ | |
| 35 | |
| 36 #ifndef JVM_MD_H | |
| 37 #define JVM_MD_H | |
| 38 | |
| 39 /* | |
| 40 * This file is currently collecting system-specific dregs for the | |
| 41 * JNI conversion, which should be sorted out later. | |
| 42 */ | |
| 43 | |
| 44 #include <dirent.h> /* For DIR */ | |
| 45 #include <sys/param.h> /* For MAXPATHLEN */ | |
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46 #include <sys/socket.h> /* For socklen_t */ |
| 0 | 47 #include <unistd.h> /* For F_OK, R_OK, W_OK */ |
| 48 | |
| 49 #define JNI_ONLOAD_SYMBOLS {"JNI_OnLoad"} | |
| 50 #define JNI_ONUNLOAD_SYMBOLS {"JNI_OnUnload"} | |
| 51 #define JVM_ONLOAD_SYMBOLS {"JVM_OnLoad"} | |
| 52 #define AGENT_ONLOAD_SYMBOLS {"Agent_OnLoad"} | |
| 53 #define AGENT_ONUNLOAD_SYMBOLS {"Agent_OnUnload"} | |
| 54 #define AGENT_ONATTACH_SYMBOLS {"Agent_OnAttach"} | |
| 55 | |
| 56 #define JNI_LIB_PREFIX "lib" | |
| 57 #define JNI_LIB_SUFFIX ".so" | |
| 58 | |
| 59 // Hack: MAXPATHLEN is 4095 on some Linux and 4096 on others. This may | |
| 60 // cause problems if JVM and the rest of JDK are built on different | |
| 61 // Linux releases. Here we define JVM_MAXPATHLEN to be MAXPATHLEN + 1, | |
| 62 // so buffers declared in VM are always >= 4096. | |
| 63 #define JVM_MAXPATHLEN MAXPATHLEN + 1 | |
| 64 | |
| 65 #define JVM_R_OK R_OK | |
| 66 #define JVM_W_OK W_OK | |
| 67 #define JVM_X_OK X_OK | |
| 68 #define JVM_F_OK F_OK | |
| 69 | |
| 70 /* | |
| 71 * File I/O | |
| 72 */ | |
| 73 | |
| 74 #include <sys/types.h> | |
| 75 #include <sys/stat.h> | |
| 76 #include <fcntl.h> | |
| 77 #include <errno.h> | |
| 78 | |
| 79 /* O Flags */ | |
| 80 | |
| 81 #define JVM_O_RDONLY O_RDONLY | |
| 82 #define JVM_O_WRONLY O_WRONLY | |
| 83 #define JVM_O_RDWR O_RDWR | |
| 84 #define JVM_O_O_APPEND O_APPEND | |
| 85 #define JVM_O_EXCL O_EXCL | |
| 86 #define JVM_O_CREAT O_CREAT | |
| 87 | |
| 88 /* Signal definitions */ | |
| 89 | |
| 90 #define BREAK_SIGNAL SIGQUIT /* Thread dumping support. */ | |
| 91 #define INTERRUPT_SIGNAL SIGUSR1 /* Interruptible I/O support. */ | |
| 92 #define SHUTDOWN1_SIGNAL SIGHUP /* Shutdown Hooks support. */ | |
| 93 #define SHUTDOWN2_SIGNAL SIGINT | |
| 94 #define SHUTDOWN3_SIGNAL SIGTERM | |
| 95 | |
| 96 #endif /* JVM_MD_H */ | |
| 97 | |
| 1972 | 98 #endif // OS_LINUX_VM_JVM_LINUX_H |