| /* |
| * Copyright (c) 2015 SAP SE. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #include "misc_aix.hpp" |
| #include "runtime/stubRoutines.hpp" |
| #include "utilities/align.hpp" |
| |
| #include <pthread.h> |
| #include <unistd.h> |
| #include <errno.h> |
| |
| void MiscUtils::init_critsect(MiscUtils::critsect_t* cs) { |
| const int rc = pthread_mutex_init(cs, NULL); |
| assert0(rc == 0); |
| } |
| |
| void MiscUtils::free_critsect(MiscUtils::critsect_t* cs) { |
| const int rc = pthread_mutex_destroy(cs); |
| assert0(rc == 0); |
| } |
| |
| void MiscUtils::enter_critsect(MiscUtils::critsect_t* cs) { |
| const int rc = pthread_mutex_lock(cs); |
| assert0(rc == 0); |
| } |
| |
| void MiscUtils::leave_critsect(MiscUtils::critsect_t* cs) { |
| const int rc = pthread_mutex_unlock(cs); |
| assert0(rc == 0); |
| } |
| |
| bool MiscUtils::is_readable_pointer(const void* p) { |
| if (!CanUseSafeFetch32()) { |
| return true; |
| } |
| int* const aligned = (int*) align_down(p, 4); |
| int cafebabe = 0xcafebabe; |
| int deadbeef = 0xdeadbeef; |
| return (SafeFetch32(aligned, cafebabe) != cafebabe) || |
| (SafeFetch32(aligned, deadbeef) != deadbeef); |
| } |
| |
| |