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src/os/bsd/vm/osThread_bsd.hpp@6cb0d32b828b (annotated)

src/os/bsd/vm/osThread_bsd.hpp

Wed, 07 Nov 2012 17:53:02 -0500

author

bpittore

date

Wed, 07 Nov 2012 17:53:02 -0500

changeset 4261

6cb0d32b828b

parent 4229

0af5da0c9d9d

child 4564

758935f7c23f

permissions

-rw-r--r--

8001185: parsing of sun.boot.library.path in os::dll_build_name somewhat broken
Summary: dll_dir can contain multiple paths, need to parse them correctly when loading agents
Reviewed-by: dholmes, dlong
Contributed-by: bill.pittore@oracle.com

never@3156	1	/*
sla@3587	2	* Copyright (c) 1999, 2012, 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
rbackman@3796	45	typedef pthread_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
never@3156	52	sigset_t _caller_sigmask; // Caller's signal mask
never@3156	53
never@3156	54	public:
never@3156	55
never@3156	56	// Methods to save/restore caller's signal mask
never@3156	57	sigset_t caller_sigmask() const { return _caller_sigmask; }
never@3156	58	void set_caller_sigmask(sigset_t sigmask) { _caller_sigmask = sigmask; }
never@3156	59
never@3156	60	#ifndef PRODUCT
never@3156	61	// Used for debugging, return a unique integer for each thread.
never@3156	62	intptr_t thread_identifier() const { return (intptr_t)_pthread_id; }
never@3156	63	#endif
rbackman@3796	64
never@3156	65	#ifdef ASSERT
never@3156	66	// We expect no reposition failures so kill vm if we get one.
never@3156	67	//
never@3156	68	bool valid_reposition_failure() {
never@3156	69	return false;
never@3156	70	}
never@3156	71	#endif // ASSERT
rbackman@3796	72
never@3156	73	pthread_t pthread_id() const {
never@3156	74	return _pthread_id;
never@3156	75	}
never@3156	76	void set_pthread_id(pthread_t tid) {
never@3156	77	_pthread_id = tid;
never@3156	78	}
never@3156	79
never@3156	80	// ***************************************************************
never@3156	81	// suspension support.
never@3156	82	// ***************************************************************
never@3156	83
never@3156	84	public:
never@3156	85	// flags that support signal based suspend/resume on Bsd are in a
never@3156	86	// separate class to avoid confusion with many flags in OSThread that
never@3156	87	// are used by VM level suspend/resume.
never@3156	88	os::Bsd::SuspendResume sr;
never@3156	89
never@3156	90	// _ucontext and _siginfo are used by SR_handler() to save thread context,
never@3156	91	// and they will later be used to walk the stack or reposition thread PC.
never@3156	92	// If the thread is not suspended in SR_handler() (e.g. self suspend),
never@3156	93	// the value in _ucontext is meaningless, so we must use the last Java
never@3156	94	// frame information as the frame. This will mean that for threads
never@3156	95	// that are parked on a mutex the profiler (and safepoint mechanism)
never@3156	96	// will see the thread as if it were still in the Java frame. This
never@3156	97	// not a problem for the profiler since the Java frame is a close
never@3156	98	// enough result. For the safepoint mechanism when the give it the
never@3156	99	// Java frame we are not at a point where the safepoint needs the
never@3156	100	// frame to that accurate (like for a compiled safepoint) since we
never@3156	101	// should be in a place where we are native and will block ourselves
never@3156	102	// if we transition.
never@3156	103	private:
never@3156	104	void* _siginfo;
never@3156	105	ucontext_t* _ucontext;
never@3156	106	int _expanding_stack; /* non zero if manually expanding stack */
never@3156	107	address _alt_sig_stack; /* address of base of alternate signal stack */
never@3156	108
never@3156	109	public:
never@3156	110	void* siginfo() const { return _siginfo; }
never@3156	111	void set_siginfo(void* ptr) { _siginfo = ptr; }
never@3156	112	ucontext_t* ucontext() const { return _ucontext; }
never@3156	113	void set_ucontext(ucontext_t* ptr) { _ucontext = ptr; }
never@3156	114	void set_expanding_stack(void) { _expanding_stack = 1; }
never@3156	115	void clear_expanding_stack(void) { _expanding_stack = 0; }
never@3156	116	int expanding_stack(void) { return _expanding_stack; }
never@3156	117
never@3156	118	void set_alt_sig_stack(address val) { _alt_sig_stack = val; }
never@3156	119	address alt_sig_stack(void) { return _alt_sig_stack; }
never@3156	120
never@3156	121	private:
never@3156	122	Monitor* _startThread_lock; // sync parent and child in thread creation
never@3156	123
never@3156	124	public:
never@3156	125
never@3156	126	Monitor* startThread_lock() const {
never@3156	127	return _startThread_lock;
never@3156	128	}
never@3156	129
never@3156	130	// ***************************************************************
never@3156	131	// Platform dependent initialization and cleanup
never@3156	132	// ***************************************************************
never@3156	133
never@3156	134	private:
never@3156	135
never@3156	136	void pd_initialize();
never@3156	137	void pd_destroy();
never@3156	138
never@3156	139	// Reconciliation History
never@3156	140	// osThread_solaris.hpp 1.24 99/08/27 13:11:54
never@3156	141	// End
never@3156	142
never@3156	143	#endif // OS_BSD_VM_OSTHREAD_BSD_HPP