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src/os/bsd/vm/osThread_bsd.hpp@ce8f6bb717c9 (annotated)

src/os/bsd/vm/osThread_bsd.hpp

Tue, 29 Apr 2014 15:17:27 +0200

author

goetz

date

Tue, 29 Apr 2014 15:17:27 +0200

changeset 6911

ce8f6bb717c9

parent 5834

faff125a1ead

child 6876

710a3c8b516e

permissions

-rw-r--r--

8042195: Introduce umbrella header orderAccess.inline.hpp.
Reviewed-by: dholmes, kvn, stefank, twisti

never@3156	1	/*
sla@5237	2	* Copyright (c) 1999, 2013, 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
sla@3587	42	#ifdef __APPLE__
rbackman@3796	43	typedef thread_t thread_id_t;
sla@3587	44	#else
dsamersoff@5834	45	typedef pid_t thread_id_t;
rbackman@3796	46	#endif
rbackman@3796	47
sla@3587	48	// _pthread_id is the pthread id, which is used by library calls
sla@3587	49	// (e.g. pthread_kill).
never@3156	50	pthread_t _pthread_id;
sla@3587	51
sla@4564	52	// This is the "thread_id" from struct thread_identifier_info. According to a
sla@4564	53	// comment in thread_info.h, this is a "system-wide unique 64-bit thread id".
sla@4564	54	// The value is used by SA to correlate threads.
sla@4564	55	uint64_t _unique_thread_id;
sla@4564	56
never@3156	57	sigset_t _caller_sigmask; // Caller's signal mask
never@3156	58
never@3156	59	public:
never@3156	60
never@3156	61	// Methods to save/restore caller's signal mask
never@3156	62	sigset_t caller_sigmask() const { return _caller_sigmask; }
never@3156	63	void set_caller_sigmask(sigset_t sigmask) { _caller_sigmask = sigmask; }
never@3156	64
never@3156	65	#ifndef PRODUCT
never@3156	66	// Used for debugging, return a unique integer for each thread.
never@3156	67	intptr_t thread_identifier() const { return (intptr_t)_pthread_id; }
never@3156	68	#endif
rbackman@3796	69
never@3156	70	#ifdef ASSERT
never@3156	71	// We expect no reposition failures so kill vm if we get one.
never@3156	72	//
never@3156	73	bool valid_reposition_failure() {
never@3156	74	return false;
never@3156	75	}
never@3156	76	#endif // ASSERT
rbackman@3796	77
never@3156	78	pthread_t pthread_id() const {
never@3156	79	return _pthread_id;
never@3156	80	}
never@3156	81	void set_pthread_id(pthread_t tid) {
never@3156	82	_pthread_id = tid;
never@3156	83	}
never@3156	84
sla@4564	85	void set_unique_thread_id(uint64_t id) {
sla@4564	86	_unique_thread_id = id;
sla@4564	87	}
sla@4564	88
never@3156	89	// ***************************************************************
never@3156	90	// suspension support.
never@3156	91	// ***************************************************************
never@3156	92
never@3156	93	public:
never@3156	94	// flags that support signal based suspend/resume on Bsd are in a
never@3156	95	// separate class to avoid confusion with many flags in OSThread that
never@3156	96	// are used by VM level suspend/resume.
sla@5237	97	os::SuspendResume sr;
never@3156	98
never@3156	99	// _ucontext and _siginfo are used by SR_handler() to save thread context,
never@3156	100	// and they will later be used to walk the stack or reposition thread PC.
never@3156	101	// If the thread is not suspended in SR_handler() (e.g. self suspend),
never@3156	102	// the value in _ucontext is meaningless, so we must use the last Java
never@3156	103	// frame information as the frame. This will mean that for threads
never@3156	104	// that are parked on a mutex the profiler (and safepoint mechanism)
never@3156	105	// will see the thread as if it were still in the Java frame. This
never@3156	106	// not a problem for the profiler since the Java frame is a close
never@3156	107	// enough result. For the safepoint mechanism when the give it the
never@3156	108	// Java frame we are not at a point where the safepoint needs the
never@3156	109	// frame to that accurate (like for a compiled safepoint) since we
never@3156	110	// should be in a place where we are native and will block ourselves
never@3156	111	// if we transition.
never@3156	112	private:
never@3156	113	void* _siginfo;
never@3156	114	ucontext_t* _ucontext;
never@3156	115	int _expanding_stack; /* non zero if manually expanding stack */
never@3156	116	address _alt_sig_stack; /* address of base of alternate signal stack */
never@3156	117
never@3156	118	public:
never@3156	119	void* siginfo() const { return _siginfo; }
never@3156	120	void set_siginfo(void* ptr) { _siginfo = ptr; }
never@3156	121	ucontext_t* ucontext() const { return _ucontext; }
never@3156	122	void set_ucontext(ucontext_t* ptr) { _ucontext = ptr; }
never@3156	123	void set_expanding_stack(void) { _expanding_stack = 1; }
never@3156	124	void clear_expanding_stack(void) { _expanding_stack = 0; }
never@3156	125	int expanding_stack(void) { return _expanding_stack; }
never@3156	126
never@3156	127	void set_alt_sig_stack(address val) { _alt_sig_stack = val; }
never@3156	128	address alt_sig_stack(void) { return _alt_sig_stack; }
never@3156	129
never@3156	130	private:
never@3156	131	Monitor* _startThread_lock; // sync parent and child in thread creation
never@3156	132
never@3156	133	public:
never@3156	134
never@3156	135	Monitor* startThread_lock() const {
never@3156	136	return _startThread_lock;
never@3156	137	}
never@3156	138
never@3156	139	// ***************************************************************
never@3156	140	// Platform dependent initialization and cleanup
never@3156	141	// ***************************************************************
never@3156	142
never@3156	143	private:
never@3156	144
never@3156	145	void pd_initialize();
never@3156	146	void pd_destroy();
never@3156	147
never@3156	148	// Reconciliation History
never@3156	149	// osThread_solaris.hpp 1.24 99/08/27 13:11:54
never@3156	150	// End
never@3156	151
never@3156	152	#endif // OS_BSD_VM_OSTHREAD_BSD_HPP