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src/os/solaris/vm/jvm_solaris.h@4c84d351cca9 (annotated)

src/os/solaris/vm/jvm_solaris.h

Fri, 16 Aug 2013 13:22:32 +0200

author

stefank

date

Fri, 16 Aug 2013 13:22:32 +0200

changeset 5578

4c84d351cca9

parent 3344

11c26bfcf8c7

child 6876

710a3c8b516e

child 7624

6a4b9e574124

permissions

-rw-r--r--

8007074: SIGSEGV at ParMarkBitMap::verify_clear()
Summary: Replace the broken large pages implementation on Linux. New flag: -XX:+UseTransparentHugePages - Linux specific flag to turn on transparent huge page hinting with madvise(..., MAP_HUGETLB). Changed behavior: -XX:+UseLargePages - tries to use -XX:+UseTransparentHugePages before trying other large pages implementations (on Linux). Changed behavior: -XX:+UseHugeTLBFS - Use upfront allocation of Large Pages instead of using the broken implementation to dynamically committing large pages. Changed behavior: -XX:LargePageSizeInBytes - Turned off the ability to use this flag on Linux and provides warning to user if set to a value different than the OS chosen large page size. Changed behavior: Setting no large page size - Now defaults to use -XX:UseTransparentHugePages if the OS supports it. Previously, -XX:+UseHugeTLBFS was chosen if the OS was configured to use large pages.
Reviewed-by: tschatzl, dcubed, brutisso

duke@435	1	/*
stefank@2314	2	* Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
stefank@2314	25	#ifndef OS_SOLARIS_VM_JVM_SOLARIS_H
stefank@2314	26	#define OS_SOLARIS_VM_JVM_SOLARIS_H
stefank@2314	27
duke@435	28	/*
duke@435	29	// HotSpot integration note:
duke@435	30	//
duke@435	31	// This is derived from the JDK classic file:
duke@435	32	// "$JDK/src/solaris/javavm/export/jvm_md.h":15 (ver. 1.10 98/04/22)
duke@435	33	// All local includes have been commented out.
duke@435	34	*/
duke@435	35
duke@435	36	#ifndef JVM_MD_H
duke@435	37	#define JVM_MD_H
duke@435	38
duke@435	39	/*
duke@435	40	* This file is currently collecting system-specific dregs for the
duke@435	41	* JNI conversion, which should be sorted out later.
duke@435	42	*/
duke@435	43
duke@435	44	#include <dirent.h> /* For DIR */
duke@435	45	#include <sys/param.h> /* For MAXPATHLEN */
phh@3344	46	#include <sys/socket.h> /* For socklen_t */
duke@435	47	#include <unistd.h> /* For F_OK, R_OK, W_OK */
duke@435	48	#include <sys/int_types.h> /* for intptr_t types (64 Bit cleanliness) */
duke@435	49
duke@435	50	#define JNI_ONLOAD_SYMBOLS {"JNI_OnLoad"}
duke@435	51	#define JNI_ONUNLOAD_SYMBOLS {"JNI_OnUnload"}
duke@435	52	#define JVM_ONLOAD_SYMBOLS {"JVM_OnLoad"}
duke@435	53	#define AGENT_ONLOAD_SYMBOLS {"Agent_OnLoad"}
duke@435	54	#define AGENT_ONUNLOAD_SYMBOLS {"Agent_OnUnload"}
duke@435	55	#define AGENT_ONATTACH_SYMBOLS {"Agent_OnAttach"}
duke@435	56
duke@435	57	#define JNI_LIB_PREFIX "lib"
duke@435	58	#define JNI_LIB_SUFFIX ".so"
duke@435	59
duke@435	60	#define JVM_MAXPATHLEN MAXPATHLEN
duke@435	61
duke@435	62	#define JVM_R_OK R_OK
duke@435	63	#define JVM_W_OK W_OK
duke@435	64	#define JVM_X_OK X_OK
duke@435	65	#define JVM_F_OK F_OK
duke@435	66
duke@435	67	/*
duke@435	68	* File I/O
duke@435	69	*/
duke@435	70
duke@435	71	#include <sys/types.h>
duke@435	72	#include <sys/stat.h>
duke@435	73	#include <fcntl.h>
duke@435	74	#include <errno.h>
duke@435	75
duke@435	76	/* O Flags */
duke@435	77
duke@435	78	#define JVM_O_RDONLY O_RDONLY
duke@435	79	#define JVM_O_WRONLY O_WRONLY
duke@435	80	#define JVM_O_RDWR O_RDWR
duke@435	81	#define JVM_O_O_APPEND O_APPEND
duke@435	82	#define JVM_O_EXCL O_EXCL
duke@435	83	#define JVM_O_CREAT O_CREAT
duke@435	84
duke@435	85	/* Signal definitions */
duke@435	86
duke@435	87	#define BREAK_SIGNAL SIGQUIT /* Thread dumping support. */
duke@435	88	#define INTERRUPT_SIGNAL SIGUSR1 /* Interruptible I/O support. */
duke@435	89	#define ASYNC_SIGNAL SIGUSR2 /* Watcher & async err support. */
duke@435	90	#define SHUTDOWN1_SIGNAL SIGHUP /* Shutdown Hooks support. */
duke@435	91	#define SHUTDOWN2_SIGNAL SIGINT
duke@435	92	#define SHUTDOWN3_SIGNAL SIGTERM
duke@435	93	/* alternative signals used with -XX:+UseAltSigs (or for backward
duke@435	94	compatibility with 1.2, -Xusealtsigs) flag. Chosen to be
duke@435	95	unlikely to conflict with applications embedding the vm */
duke@435	96	#define ALT_INTERRUPT_SIGNAL (SIGRTMIN + SIGRTMAX)/2 /* alternate intio signal */
duke@435	97	#define ALT_ASYNC_SIGNAL ALT_INTERRUPT_SIGNAL+1 /* alternate async signal */
duke@435	98
duke@435	99	/* With 1.4.1 libjsig added versioning: used in os_solaris.cpp and jsig.c */
duke@435	100	#define JSIG_VERSION_1_4_1 0x30140100
duke@435	101
duke@435	102	#endif /* JVM_MD_H */
stefank@2314	103
stefank@2314	104	#endif // OS_SOLARIS_VM_JVM_SOLARIS_H