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src/os/bsd/vm/osThread_bsd.hpp@f08d439fab8c (annotated)

src/os/bsd/vm/osThread_bsd.hpp

Sun, 25 Sep 2011 16:03:29 -0700

author

never

date

Sun, 25 Sep 2011 16:03:29 -0700

changeset 3156

f08d439fab8c

child 3587

0368109684cb

permissions

-rw-r--r--

7089790: integrate bsd-port changes
Reviewed-by: kvn, twisti, jrose
Contributed-by: Kurt Miller <kurt@intricatesoftware.com>, Greg Lewis <glewis@eyesbeyond.com>, Jung-uk Kim <jkim@freebsd.org>, Christos Zoulas <christos@zoulas.com>, Landon Fuller <landonf@plausible.coop>, The FreeBSD Foundation <board@freebsdfoundation.org>, Michael Franz <mvfranz@gmail.com>, Roger Hoover <rhoover@apple.com>, Alexander Strange <astrange@apple.com>

never@3156	1	/*
never@3156	2	* Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
never@3156	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
never@3156	4	*
never@3156	5	* This code is free software; you can redistribute it and/or modify it
never@3156	6	* under the terms of the GNU General Public License version 2 only, as
never@3156	7	* published by the Free Software Foundation.
never@3156	8	*
never@3156	9	* This code is distributed in the hope that it will be useful, but WITHOUT
never@3156	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
never@3156	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
never@3156	12	* version 2 for more details (a copy is included in the LICENSE file that
never@3156	13	* accompanied this code).
never@3156	14	*
never@3156	15	* You should have received a copy of the GNU General Public License version
never@3156	16	* 2 along with this work; if not, write to the Free Software Foundation,
never@3156	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
never@3156	18	*
never@3156	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
never@3156	20	* or visit www.oracle.com if you need additional information or have any
never@3156	21	* questions.
never@3156	22	*
never@3156	23	*/
never@3156	24
never@3156	25	#ifndef OS_BSD_VM_OSTHREAD_BSD_HPP
never@3156	26	#define OS_BSD_VM_OSTHREAD_BSD_HPP
never@3156	27
never@3156	28	private:
never@3156	29	int _thread_type;
never@3156	30
never@3156	31	public:
never@3156	32
never@3156	33	int thread_type() const {
never@3156	34	return _thread_type;
never@3156	35	}
never@3156	36	void set_thread_type(int type) {
never@3156	37	_thread_type = type;
never@3156	38	}
never@3156	39
never@3156	40	private:
never@3156	41
never@3156	42	#ifdef _ALLBSD_SOURCE
never@3156	43	// _thread_id and _pthread_id are the same on BSD
never@3156	44	// keep both to minimize code divergence in os_bsd.cpp
never@3156	45	pthread_t _thread_id;
never@3156	46	pthread_t _pthread_id;
never@3156	47	#else
never@3156	48	// _thread_id is kernel thread id (similar to LWP id on Solaris). Each
never@3156	49	// thread has a unique thread_id (BsdThreads or NPTL). It can be used
never@3156	50	// to access /proc.
never@3156	51	pid_t _thread_id;
never@3156	52
never@3156	53	// _pthread_id is the pthread id, which is used by library calls
never@3156	54	// (e.g. pthread_kill).
never@3156	55	pthread_t _pthread_id;
never@3156	56	#endif
never@3156	57
never@3156	58	sigset_t _caller_sigmask; // Caller's signal mask
never@3156	59
never@3156	60	public:
never@3156	61
never@3156	62	// Methods to save/restore caller's signal mask
never@3156	63	sigset_t caller_sigmask() const { return _caller_sigmask; }
never@3156	64	void set_caller_sigmask(sigset_t sigmask) { _caller_sigmask = sigmask; }
never@3156	65
never@3156	66	#ifdef _ALLBSD_SOURCE
never@3156	67	pthread_t thread_id() const {
never@3156	68	return _thread_id;
never@3156	69	}
never@3156	70	#else
never@3156	71	pid_t thread_id() const {
never@3156	72	return _thread_id;
never@3156	73	}
never@3156	74	#endif
never@3156	75	#ifndef PRODUCT
never@3156	76	// Used for debugging, return a unique integer for each thread.
never@3156	77	intptr_t thread_identifier() const { return (intptr_t)_pthread_id; }
never@3156	78	#endif
never@3156	79	#ifdef ASSERT
never@3156	80	// We expect no reposition failures so kill vm if we get one.
never@3156	81	//
never@3156	82	bool valid_reposition_failure() {
never@3156	83	return false;
never@3156	84	}
never@3156	85	#endif // ASSERT
never@3156	86	#ifdef _ALLBSD_SOURCE
never@3156	87	void set_thread_id(pthread_t id) {
never@3156	88	_thread_id = id;
never@3156	89	}
never@3156	90	#else
never@3156	91	void set_thread_id(pid_t id) {
never@3156	92	_thread_id = id;
never@3156	93	}
never@3156	94	#endif
never@3156	95	pthread_t pthread_id() const {
never@3156	96	return _pthread_id;
never@3156	97	}
never@3156	98	void set_pthread_id(pthread_t tid) {
never@3156	99	_pthread_id = tid;
never@3156	100	}
never@3156	101
never@3156	102	// ***************************************************************
never@3156	103	// suspension support.
never@3156	104	// ***************************************************************
never@3156	105
never@3156	106	public:
never@3156	107	// flags that support signal based suspend/resume on Bsd are in a
never@3156	108	// separate class to avoid confusion with many flags in OSThread that
never@3156	109	// are used by VM level suspend/resume.
never@3156	110	os::Bsd::SuspendResume sr;
never@3156	111
never@3156	112	// _ucontext and _siginfo are used by SR_handler() to save thread context,
never@3156	113	// and they will later be used to walk the stack or reposition thread PC.
never@3156	114	// If the thread is not suspended in SR_handler() (e.g. self suspend),
never@3156	115	// the value in _ucontext is meaningless, so we must use the last Java
never@3156	116	// frame information as the frame. This will mean that for threads
never@3156	117	// that are parked on a mutex the profiler (and safepoint mechanism)
never@3156	118	// will see the thread as if it were still in the Java frame. This
never@3156	119	// not a problem for the profiler since the Java frame is a close
never@3156	120	// enough result. For the safepoint mechanism when the give it the
never@3156	121	// Java frame we are not at a point where the safepoint needs the
never@3156	122	// frame to that accurate (like for a compiled safepoint) since we
never@3156	123	// should be in a place where we are native and will block ourselves
never@3156	124	// if we transition.
never@3156	125	private:
never@3156	126	void* _siginfo;
never@3156	127	ucontext_t* _ucontext;
never@3156	128	int _expanding_stack; /* non zero if manually expanding stack */
never@3156	129	address _alt_sig_stack; /* address of base of alternate signal stack */
never@3156	130
never@3156	131	public:
never@3156	132	void* siginfo() const { return _siginfo; }
never@3156	133	void set_siginfo(void* ptr) { _siginfo = ptr; }
never@3156	134	ucontext_t* ucontext() const { return _ucontext; }
never@3156	135	void set_ucontext(ucontext_t* ptr) { _ucontext = ptr; }
never@3156	136	void set_expanding_stack(void) { _expanding_stack = 1; }
never@3156	137	void clear_expanding_stack(void) { _expanding_stack = 0; }
never@3156	138	int expanding_stack(void) { return _expanding_stack; }
never@3156	139
never@3156	140	void set_alt_sig_stack(address val) { _alt_sig_stack = val; }
never@3156	141	address alt_sig_stack(void) { return _alt_sig_stack; }
never@3156	142
never@3156	143	private:
never@3156	144	Monitor* _startThread_lock; // sync parent and child in thread creation
never@3156	145
never@3156	146	public:
never@3156	147
never@3156	148	Monitor* startThread_lock() const {
never@3156	149	return _startThread_lock;
never@3156	150	}
never@3156	151
never@3156	152	// ***************************************************************
never@3156	153	// Platform dependent initialization and cleanup
never@3156	154	// ***************************************************************
never@3156	155
never@3156	156	private:
never@3156	157
never@3156	158	void pd_initialize();
never@3156	159	void pd_destroy();
never@3156	160
never@3156	161	// Reconciliation History
never@3156	162	// osThread_solaris.hpp 1.24 99/08/27 13:11:54
never@3156	163	// End
never@3156	164
never@3156	165	#endif // OS_BSD_VM_OSTHREAD_BSD_HPP