Mercurial > hg > truffle
annotate src/os/bsd/vm/threadCritical_bsd.cpp @ 21821:9a227eaac2dc
8050807: Better performing performance data handling
Reviewed-by: dcubed, pnauman, ctornqvi, dholmes, mschoene
Contributed-by: gerald.thornbrugh@oracle.com
| author | gthornbr |
|---|---|
| date | Mon, 17 Nov 2014 15:51:46 -0500 |
| parents | f34d701e952e |
| children |
| rev | line source |
|---|---|
| 3960 | 1 /* |
| 2 * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #include "precompiled.hpp" | |
|
7180
f34d701e952e
8003935: Simplify the needed includes for using Thread::current()
stefank
parents:
3960
diff
changeset
|
26 #include "runtime/thread.inline.hpp" |
| 3960 | 27 #include "runtime/threadCritical.hpp" |
| 28 | |
| 29 // put OS-includes here | |
| 30 # include <pthread.h> | |
| 31 | |
| 32 // | |
| 33 // See threadCritical.hpp for details of this class. | |
| 34 // | |
| 35 | |
| 36 static pthread_t tc_owner = 0; | |
| 37 static pthread_mutex_t tc_mutex = PTHREAD_MUTEX_INITIALIZER; | |
| 38 static int tc_count = 0; | |
| 39 | |
| 40 void ThreadCritical::initialize() { | |
| 41 } | |
| 42 | |
| 43 void ThreadCritical::release() { | |
| 44 } | |
| 45 | |
| 46 ThreadCritical::ThreadCritical() { | |
| 47 pthread_t self = pthread_self(); | |
| 48 if (self != tc_owner) { | |
| 49 int ret = pthread_mutex_lock(&tc_mutex); | |
| 50 guarantee(ret == 0, "fatal error with pthread_mutex_lock()"); | |
| 51 assert(tc_count == 0, "Lock acquired with illegal reentry count."); | |
| 52 tc_owner = self; | |
| 53 } | |
| 54 tc_count++; | |
| 55 } | |
| 56 | |
| 57 ThreadCritical::~ThreadCritical() { | |
| 58 assert(tc_owner == pthread_self(), "must have correct owner"); | |
| 59 assert(tc_count > 0, "must have correct count"); | |
| 60 | |
| 61 tc_count--; | |
| 62 if (tc_count == 0) { | |
| 63 tc_owner = 0; | |
| 64 int ret = pthread_mutex_unlock(&tc_mutex); | |
| 65 guarantee(ret == 0, "fatal error with pthread_mutex_unlock()"); | |
| 66 } | |
| 67 } |