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src/os/solaris/vm/threadCritical_solaris.cpp@cc32ccaaf47f (annotated)

src/os/solaris/vm/threadCritical_solaris.cpp

Thu, 04 Apr 2013 10:01:26 -0700

author

mikael

date

Thu, 04 Apr 2013 10:01:26 -0700

changeset 4889

cc32ccaaf47f

parent 4299

f34d701e952e

child 6876

710a3c8b516e

permissions

-rw-r--r--

8003310: Enable -Wunused-function when compiling with gcc
Summary: Add the -Wunused-function flag and remove a number of unused functions.
Reviewed-by: dholmes, coleenp, kvn

duke@435	1	/*
stefank@2314	2	* Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
stefank@2314	25	#include "precompiled.hpp"
stefank@4299	26	#include "runtime/thread.inline.hpp"
stefank@2314	27	#include "runtime/threadCritical.hpp"
duke@435	28
duke@435	29	// OS-includes here
duke@435	30	#include <thread.h>
duke@435	31	#include <synch.h>
duke@435	32
duke@435	33	//
duke@435	34	// See threadCritical.hpp for details of this class.
duke@435	35	//
duke@435	36	// For some reason, we don't do locking until the
duke@435	37	// os::init() call completes. I'm not sure why this
duke@435	38	// is, and have left it that way for now. This should
duke@435	39	// be reviewed later.
duke@435	40
duke@435	41	static mutex_t global_mut;
duke@435	42	static thread_t global_mut_owner = -1;
duke@435	43	static int global_mut_count = 0;
duke@435	44	static bool initialized = false;
duke@435	45
duke@435	46	ThreadCritical::ThreadCritical() {
duke@435	47	if (initialized) {
duke@435	48	thread_t owner = thr_self();
duke@435	49	if (global_mut_owner != owner) {
duke@435	50	if (os::Solaris::mutex_lock(&global_mut))
jcoomes@1845	51	fatal(err_msg("ThreadCritical::ThreadCritical: mutex_lock failed (%s)",
jcoomes@1845	52	strerror(errno)));
duke@435	53	assert(global_mut_count == 0, "must have clean count");
duke@435	54	assert(global_mut_owner == -1, "must have clean owner");
duke@435	55	}
duke@435	56	global_mut_owner = owner;
duke@435	57	++global_mut_count;
duke@435	58	} else {
duke@435	59	assert (Threads::number_of_threads() == 0, "valid only during initialization");
duke@435	60	}
duke@435	61	}
duke@435	62
duke@435	63	ThreadCritical::~ThreadCritical() {
duke@435	64	if (initialized) {
duke@435	65	assert(global_mut_owner == thr_self(), "must have correct owner");
duke@435	66	assert(global_mut_count > 0, "must have correct count");
duke@435	67	--global_mut_count;
duke@435	68	if (global_mut_count == 0) {
duke@435	69	global_mut_owner = -1;
duke@435	70	if (os::Solaris::mutex_unlock(&global_mut))
jcoomes@1845	71	fatal(err_msg("ThreadCritical::~ThreadCritical: mutex_unlock failed "
jcoomes@1845	72	"(%s)", strerror(errno)));
duke@435	73	}
duke@435	74	} else {
duke@435	75	assert (Threads::number_of_threads() == 0, "valid only during initialization");
duke@435	76	}
duke@435	77	}
duke@435	78
duke@435	79	void ThreadCritical::initialize() {
duke@435	80	// This method is called at the end of os::init(). Until
duke@435	81	// then, we don't do real locking.
duke@435	82	initialized = true;
duke@435	83	}
duke@435	84
duke@435	85	void ThreadCritical::release() {
duke@435	86	}