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