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src/os/aix/vm/osThread_aix.hpp@666e6ce3976c (annotated)

src/os/aix/vm/osThread_aix.hpp

Fri, 06 Sep 2013 20:16:09 +0200

author

simonis

date

Fri, 06 Sep 2013 20:16:09 +0200

changeset 6465

666e6ce3976c

parent 0

f90c822e73f8

permissions

-rw-r--r--

8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
Reviewed-by: kvn

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* Copyright 2012, 2013 SAP AG. All rights reserved.
aoqi@0	4	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	5	*
aoqi@0	6	* This code is free software; you can redistribute it and/or modify it
aoqi@0	7	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	8	* published by the Free Software Foundation.
aoqi@0	9	*
aoqi@0	10	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	11	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	12	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	13	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	14	* accompanied this code).
aoqi@0	15	*
aoqi@0	16	* You should have received a copy of the GNU General Public License version
aoqi@0	17	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	18	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	19	*
aoqi@0	20	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	21	* or visit www.oracle.com if you need additional information or have any
aoqi@0	22	* questions.
aoqi@0	23	*
aoqi@0	24	*/
aoqi@0	25
aoqi@0	26	#ifndef OS_AIX_VM_OSTHREAD_AIX_HPP
aoqi@0	27	#define OS_AIX_VM_OSTHREAD_AIX_HPP
aoqi@0	28
aoqi@0	29	public:
aoqi@0	30	typedef pid_t thread_id_t;
aoqi@0	31
aoqi@0	32	private:
aoqi@0	33	int _thread_type;
aoqi@0	34
aoqi@0	35	public:
aoqi@0	36
aoqi@0	37	int thread_type() const {
aoqi@0	38	return _thread_type;
aoqi@0	39	}
aoqi@0	40	void set_thread_type(int type) {
aoqi@0	41	_thread_type = type;
aoqi@0	42	}
aoqi@0	43
aoqi@0	44	private:
aoqi@0	45
aoqi@0	46	// _pthread_id is the pthread id, which is used by library calls
aoqi@0	47	// (e.g. pthread_kill).
aoqi@0	48	pthread_t _pthread_id;
aoqi@0	49
aoqi@0	50	sigset_t _caller_sigmask; // Caller's signal mask
aoqi@0	51
aoqi@0	52	public:
aoqi@0	53
aoqi@0	54	// Methods to save/restore caller's signal mask
aoqi@0	55	sigset_t caller_sigmask() const { return _caller_sigmask; }
aoqi@0	56	void set_caller_sigmask(sigset_t sigmask) { _caller_sigmask = sigmask; }
aoqi@0	57
aoqi@0	58	#ifndef PRODUCT
aoqi@0	59	// Used for debugging, return a unique integer for each thread.
aoqi@0	60	int thread_identifier() const { return _thread_id; }
aoqi@0	61	#endif
aoqi@0	62	#ifdef ASSERT
aoqi@0	63	// We expect no reposition failures so kill vm if we get one.
aoqi@0	64	//
aoqi@0	65	bool valid_reposition_failure() {
aoqi@0	66	return false;
aoqi@0	67	}
aoqi@0	68	#endif // ASSERT
aoqi@0	69	pthread_t pthread_id() const {
aoqi@0	70	return _pthread_id;
aoqi@0	71	}
aoqi@0	72	void set_pthread_id(pthread_t tid) {
aoqi@0	73	_pthread_id = tid;
aoqi@0	74	}
aoqi@0	75
aoqi@0	76	// ***************************************************************
aoqi@0	77	// suspension support.
aoqi@0	78	// ***************************************************************
aoqi@0	79
aoqi@0	80	public:
aoqi@0	81	// flags that support signal based suspend/resume on Linux are in a
aoqi@0	82	// separate class to avoid confusion with many flags in OSThread that
aoqi@0	83	// are used by VM level suspend/resume.
aoqi@0	84	os::SuspendResume sr;
aoqi@0	85
aoqi@0	86	// _ucontext and _siginfo are used by SR_handler() to save thread context,
aoqi@0	87	// and they will later be used to walk the stack or reposition thread PC.
aoqi@0	88	// If the thread is not suspended in SR_handler() (e.g. self suspend),
aoqi@0	89	// the value in _ucontext is meaningless, so we must use the last Java
aoqi@0	90	// frame information as the frame. This will mean that for threads
aoqi@0	91	// that are parked on a mutex the profiler (and safepoint mechanism)
aoqi@0	92	// will see the thread as if it were still in the Java frame. This
aoqi@0	93	// not a problem for the profiler since the Java frame is a close
aoqi@0	94	// enough result. For the safepoint mechanism when the give it the
aoqi@0	95	// Java frame we are not at a point where the safepoint needs the
aoqi@0	96	// frame to that accurate (like for a compiled safepoint) since we
aoqi@0	97	// should be in a place where we are native and will block ourselves
aoqi@0	98	// if we transition.
aoqi@0	99	private:
aoqi@0	100	void* _siginfo;
aoqi@0	101	ucontext_t* _ucontext;
aoqi@0	102	int _expanding_stack; // non zero if manually expanding stack
aoqi@0	103	address _alt_sig_stack; // address of base of alternate signal stack
aoqi@0	104
aoqi@0	105	public:
aoqi@0	106	void* siginfo() const { return _siginfo; }
aoqi@0	107	void set_siginfo(void* ptr) { _siginfo = ptr; }
aoqi@0	108	ucontext_t* ucontext() const { return _ucontext; }
aoqi@0	109	void set_ucontext(ucontext_t* ptr) { _ucontext = ptr; }
aoqi@0	110	void set_expanding_stack(void) { _expanding_stack = 1; }
aoqi@0	111	void clear_expanding_stack(void) { _expanding_stack = 0; }
aoqi@0	112	int expanding_stack(void) { return _expanding_stack; }
aoqi@0	113
aoqi@0	114	void set_alt_sig_stack(address val) { _alt_sig_stack = val; }
aoqi@0	115	address alt_sig_stack(void) { return _alt_sig_stack; }
aoqi@0	116
aoqi@0	117	private:
aoqi@0	118	Monitor* _startThread_lock; // sync parent and child in thread creation
aoqi@0	119
aoqi@0	120	public:
aoqi@0	121
aoqi@0	122	Monitor* startThread_lock() const {
aoqi@0	123	return _startThread_lock;
aoqi@0	124	}
aoqi@0	125
aoqi@0	126	// ***************************************************************
aoqi@0	127	// Platform dependent initialization and cleanup
aoqi@0	128	// ***************************************************************
aoqi@0	129
aoqi@0	130	private:
aoqi@0	131
aoqi@0	132	void pd_initialize();
aoqi@0	133	void pd_destroy();
aoqi@0	134
aoqi@0	135	public:
aoqi@0	136
aoqi@0	137	// The last measured values of cpu timing to prevent the "stale
aoqi@0	138	// value return" bug in thread_cpu_time.
aoqi@0	139	volatile struct {
aoqi@0	140	jlong sys;
aoqi@0	141	jlong user;
aoqi@0	142	} _last_cpu_times;
aoqi@0	143
aoqi@0	144	#endif // OS_AIX_VM_OSTHREAD_AIX_HPP