Tue, 28 May 2013 09:32:06 +0200
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
Summary: Fixed the output of G1SummarizeRSetStats: too small datatype for the number of concurrently processed cards, added concurrent remembered set thread time retrieval for Linux and Windows (BSD uses os::elapsedTime() now), and other cleanup. The information presented during VM operation is now relative to the previous output, not always cumulative if G1SummarizeRSetStatsPeriod > 0. At VM exit, the code prints a cumulative summary.
Reviewed-by: johnc, jwilhelm
1 /*
2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
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 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 #ifndef OS_LINUX_VM_JVM_LINUX_H
26 #define OS_LINUX_VM_JVM_LINUX_H
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 */
36 #ifndef JVM_MD_H
37 #define JVM_MD_H
39 /*
40 * This file is currently collecting system-specific dregs for the
41 * JNI conversion, which should be sorted out later.
42 */
44 #include <dirent.h> /* For DIR */
45 #include <sys/param.h> /* For MAXPATHLEN */
46 #include <sys/socket.h> /* For socklen_t */
47 #include <unistd.h> /* For F_OK, R_OK, W_OK */
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"}
56 #define JNI_LIB_PREFIX "lib"
57 #define JNI_LIB_SUFFIX ".so"
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
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
70 /*
71 * File I/O
72 */
74 #include <sys/types.h>
75 #include <sys/stat.h>
76 #include <fcntl.h>
77 #include <errno.h>
79 /* O Flags */
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
88 /* Signal definitions */
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
96 #endif /* JVM_MD_H */
98 #endif // OS_LINUX_VM_JVM_LINUX_H