jdk-sandbox: src/hotspot/os/windows/osThread_windows.cpp@cea6839598e8 (annotated)

1 489c9b5090e2 Initial load duke parents: diff changeset	1	/*
58196 cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	2	* Copyright (c) 1998, 2019, Oracle and/or its affiliates. All rights reserved.
1 489c9b5090e2 Initial load duke parents: diff changeset	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
489c9b5090e2 Initial load duke parents: diff changeset	4	*
489c9b5090e2 Initial load duke parents: diff changeset	5	* This code is free software; you can redistribute it and/or modify it
489c9b5090e2 Initial load duke parents: diff changeset	6	* under the terms of the GNU General Public License version 2 only, as
489c9b5090e2 Initial load duke parents: diff changeset	7	* published by the Free Software Foundation.
489c9b5090e2 Initial load duke parents: diff changeset	8	*
489c9b5090e2 Initial load duke parents: diff changeset	9	* This code is distributed in the hope that it will be useful, but WITHOUT
489c9b5090e2 Initial load duke parents: diff changeset	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
489c9b5090e2 Initial load duke parents: diff changeset	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
489c9b5090e2 Initial load duke parents: diff changeset	12	* version 2 for more details (a copy is included in the LICENSE file that
489c9b5090e2 Initial load duke parents: diff changeset	13	* accompanied this code).
489c9b5090e2 Initial load duke parents: diff changeset	14	*
489c9b5090e2 Initial load duke parents: diff changeset	15	* You should have received a copy of the GNU General Public License version
489c9b5090e2 Initial load duke parents: diff changeset	16	* 2 along with this work; if not, write to the Free Software Foundation,
489c9b5090e2 Initial load duke parents: diff changeset	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
489c9b5090e2 Initial load duke parents: diff changeset	18	*
5547 f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1 diff changeset	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1 diff changeset	20	* or visit www.oracle.com if you need additional information or have any
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1 diff changeset	21	* questions.
1 489c9b5090e2 Initial load duke parents: diff changeset	22	*
489c9b5090e2 Initial load duke parents: diff changeset	23	*/
489c9b5090e2 Initial load duke parents: diff changeset	24
7397 5b173b4ca846 6989984: Use standard include model for Hospot stefank parents: 5547 diff changeset	25	// no precompiled headers
58196 cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	26	#include "runtime/orderAccess.hpp"
7397 5b173b4ca846 6989984: Use standard include model for Hospot stefank parents: 5547 diff changeset	27	#include "runtime/os.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot stefank parents: 5547 diff changeset	28	#include "runtime/osThread.hpp"
1 489c9b5090e2 Initial load duke parents: diff changeset	29
489c9b5090e2 Initial load duke parents: diff changeset	30	void OSThread::pd_initialize() {
489c9b5090e2 Initial load duke parents: diff changeset	31	set_thread_handle(NULL);
489c9b5090e2 Initial load duke parents: diff changeset	32	set_thread_id(NULL);
489c9b5090e2 Initial load duke parents: diff changeset	33	set_interrupt_event(NULL);
489c9b5090e2 Initial load duke parents: diff changeset	34	}
489c9b5090e2 Initial load duke parents: diff changeset	35
489c9b5090e2 Initial load duke parents: diff changeset	36	void OSThread::pd_destroy() {
58196 cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	37	if (_interrupt_event != NULL) {
cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	38	CloseHandle(_interrupt_event);
cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	39	}
1 489c9b5090e2 Initial load duke parents: diff changeset	40	}
58196 cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	41
cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	42	// We need to specialize these to interact with the _interrupt_event.
cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	43
cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	44	volatile bool OSThread::interrupted() {
cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	45	return _interrupted != 0 &&
cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	46	(WaitForSingleObject(_interrupt_event, 0) == WAIT_OBJECT_0);
cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	47	}
cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	48
cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	49	void OSThread::set_interrupted(bool z) {
cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	50	if (z) {
cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	51	_interrupted = 1;
cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	52	// More than one thread can get here with the same value of osthread,
cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	53	// resulting in multiple notifications. We do, however, want the store
cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	54	// to interrupted() to be visible to other threads before we post
cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	55	// the interrupt event.
cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	56	OrderAccess::release();
cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	57	SetEvent(_interrupt_event);
cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	58	}
cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	59	else {
cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	60	// We should only ever clear the interrupt if we are in fact interrupted,
cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	61	// and this can only be done by the current thread on itself.
cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	62	assert(_interrupted == 1, "invariant for clearing interrupt state");
cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	63	_interrupted = 0;
cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	64	ResetEvent(_interrupt_event);
cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	65	}
cea6839598e8 8230424: Use platform independent code for Thread.interrupt support dholmes parents: 47216 diff changeset	66	}

author	dholmes
	Tue, 17 Sep 2019 19:09:37 -0400
changeset 58196	cea6839598e8
parent 47216	71c04702a3d5
child 58901	2700c409ff10
permissions	-rw-r--r--