jdk-sandbox: hotspot/src/os/posix/vm/os_posix.hpp@7d0ef675e808 (annotated)

12735 3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	1	/*
13963 e5b53c306fb5 7197424: update copyright year to match last edit in jdk8 hotspot repository mikael parents: 12735 diff changeset	2	* Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved.
12735 3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	4	*
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	5	* This code is free software; you can redistribute it and/or modify it
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	6	* under the terms of the GNU General Public License version 2 only, as
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	7	* published by the Free Software Foundation.
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	8	*
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	9	* This code is distributed in the hope that it will be useful, but WITHOUT
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	12	* version 2 for more details (a copy is included in the LICENSE file that
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	13	* accompanied this code).
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	14	*
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	15	* You should have received a copy of the GNU General Public License version
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	16	* 2 along with this work; if not, write to the Free Software Foundation,
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	18	*
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	20	* or visit www.oracle.com if you need additional information or have any
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	21	* questions.
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	22	*
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	23	*/
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	24
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	25	#ifndef OS_POSIX_VM_OS_POSIX_HPP
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	26	#define OS_POSIX_VM_OS_POSIX_HPP
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	27	class Posix {
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	28	friend class os;
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	29
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	30	protected:
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	31	static void print_distro_info(outputStream* st);
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	32	static void print_rlimit_info(outputStream* st);
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	33	static void print_uname_info(outputStream* st);
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	34	static void print_libversion_info(outputStream* st);
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	35	static void print_load_average(outputStream* st);
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	36
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	37
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	38	};
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	39
18943 7d0ef675e808 8020701: Avoid crashes in WatcherThread rbackman parents: 13963 diff changeset	40	/*
7d0ef675e808 8020701: Avoid crashes in WatcherThread rbackman parents: 13963 diff changeset	41	* Crash protection for the watcher thread. Wrap the callback
7d0ef675e808 8020701: Avoid crashes in WatcherThread rbackman parents: 13963 diff changeset	42	* with a sigsetjmp and in case of a SIGSEGV/SIGBUS we siglongjmp
7d0ef675e808 8020701: Avoid crashes in WatcherThread rbackman parents: 13963 diff changeset	43	* back.
7d0ef675e808 8020701: Avoid crashes in WatcherThread rbackman parents: 13963 diff changeset	44	* To be able to use this - don't take locks, don't rely on destructors,
7d0ef675e808 8020701: Avoid crashes in WatcherThread rbackman parents: 13963 diff changeset	45	* don't make OS library calls, don't allocate memory, don't print,
7d0ef675e808 8020701: Avoid crashes in WatcherThread rbackman parents: 13963 diff changeset	46	* don't call code that could leave the heap / memory in an inconsistent state,
7d0ef675e808 8020701: Avoid crashes in WatcherThread rbackman parents: 13963 diff changeset	47	* or anything else where we are not in control if we suddenly jump out.
7d0ef675e808 8020701: Avoid crashes in WatcherThread rbackman parents: 13963 diff changeset	48	*/
7d0ef675e808 8020701: Avoid crashes in WatcherThread rbackman parents: 13963 diff changeset	49	class WatcherThreadCrashProtection : public StackObj {
7d0ef675e808 8020701: Avoid crashes in WatcherThread rbackman parents: 13963 diff changeset	50	public:
7d0ef675e808 8020701: Avoid crashes in WatcherThread rbackman parents: 13963 diff changeset	51	WatcherThreadCrashProtection();
7d0ef675e808 8020701: Avoid crashes in WatcherThread rbackman parents: 13963 diff changeset	52	bool call(os::CrashProtectionCallback& cb);
7d0ef675e808 8020701: Avoid crashes in WatcherThread rbackman parents: 13963 diff changeset	53
7d0ef675e808 8020701: Avoid crashes in WatcherThread rbackman parents: 13963 diff changeset	54	static void check_crash_protection(int signal, Thread* thread);
7d0ef675e808 8020701: Avoid crashes in WatcherThread rbackman parents: 13963 diff changeset	55	private:
7d0ef675e808 8020701: Avoid crashes in WatcherThread rbackman parents: 13963 diff changeset	56	void restore();
7d0ef675e808 8020701: Avoid crashes in WatcherThread rbackman parents: 13963 diff changeset	57	sigjmp_buf _jmpbuf;
7d0ef675e808 8020701: Avoid crashes in WatcherThread rbackman parents: 13963 diff changeset	58	};
12735 3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	59
3e2e491f4f69 7165755: OS Information much longer on linux than other platforms nloodin parents: diff changeset	60	#endif

author	rbackman
	Wed, 17 Jul 2013 13:48:15 +0200
changeset 18943	7d0ef675e808
parent 13963	e5b53c306fb5
child 22826	3ee6886e718d
child 22234	da823d78ad65
permissions	-rw-r--r--