1 /*
2 * Copyright (c) 2015, 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 #ifndef SHARE_VM_RUNTIME_SEMAPHORE_HPP
26 #define SHARE_VM_RUNTIME_SEMAPHORE_HPP
27
28 #include "memory/allocation.hpp"
29
30 #if defined(TARGET_OS_FAMILY_linux) || defined(TARGET_OS_FAMILY_solaris) || defined(TARGET_OS_FAMILY_aix)
31 # include "semaphore_posix.hpp"
32 #elif defined(TARGET_OS_FAMILY_bsd)
33 # include "semaphore_bsd.hpp"
34 #elif defined(TARGET_OS_FAMILY_windows)
35 # include "semaphore_windows.hpp"
36 #else
37 # error "No semaphore implementation provided for this OS"
38 #endif
39
40 // Implements the limited, platform independent Semaphore API.
41 class Semaphore : public CHeapObj<mtInternal> {
42 SemaphoreImpl _impl;
43
44 // Prevent copying and assignment of Semaphore instances.
45 Semaphore(const Semaphore&);
46 Semaphore& operator=(const Semaphore&);
47
48 public:
49 Semaphore(uint value = 0) : _impl(value) {}
50 ~Semaphore() {}
51
52 void signal(uint count = 1) { _impl.signal(count); }
53
54 void wait() { _impl.wait(); }
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1 /*
2 * Copyright (c) 2015, 2016, 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 #ifndef SHARE_VM_RUNTIME_SEMAPHORE_HPP
26 #define SHARE_VM_RUNTIME_SEMAPHORE_HPP
27
28 #include "memory/allocation.hpp"
29
30 #if defined(LINUX) || defined(SOLARIS) || defined(AIX)
31 # include "semaphore_posix.hpp"
32 #elif defined(BSD)
33 # include "semaphore_bsd.hpp"
34 #elif defined(_WINDOWS)
35 # include "semaphore_windows.hpp"
36 #else
37 # error "No semaphore implementation provided for this OS"
38 #endif
39
40 // Implements the limited, platform independent Semaphore API.
41 class Semaphore : public CHeapObj<mtInternal> {
42 SemaphoreImpl _impl;
43
44 // Prevent copying and assignment of Semaphore instances.
45 Semaphore(const Semaphore&);
46 Semaphore& operator=(const Semaphore&);
47
48 public:
49 Semaphore(uint value = 0) : _impl(value) {}
50 ~Semaphore() {}
51
52 void signal(uint count = 1) { _impl.signal(count); }
53
54 void wait() { _impl.wait(); }
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