jdk8-mips64-public/hotspot: src/share/vm/runtime/semaphore.hpp@b985cbb00e68

8223147: JFR Backport
8199712: Flight Recorder
8203346: JFR: Inconsistent signature of jfr_add_string_constant
8195817: JFR.stop should require name of recording
8195818: JFR.start should increase autogenerated name by one
8195819: Remove recording=x from jcmd JFR.check output
8203921: JFR thread sampling is missing fixes from JDK-8194552
8203929: Limit amount of data for JFR.dump
8203664: JFR start failure after AppCDS archive created with JFR StartFlightRecording
8003209: JFR events for network utilization
8207392: [PPC64] Implement JFR profiling
8202835: jfr/event/os/TestSystemProcess.java fails on missing events
Summary: Backport JFR from JDK11. Initial integration
Reviewed-by: neugens

     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  */

    25 #ifndef SHARE_VM_RUNTIME_SEMAPHORE_HPP

    26 #define SHARE_VM_RUNTIME_SEMAPHORE_HPP

    28 #include "memory/allocation.hpp"

    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

    40 class JavaThread;

    42 // Implements the limited, platform independent Semaphore API.

    43 class Semaphore : public CHeapObj<mtInternal> {

    44   SemaphoreImpl _impl;

    46   // Prevent copying and assignment of Semaphore instances.

    47   Semaphore(const Semaphore&);

    48   Semaphore& operator=(const Semaphore&);

    50  public:

    51   Semaphore(uint value = 0) : _impl(value) {}

    52   ~Semaphore() {}

    54   void signal(uint count = 1) { _impl.signal(count); }

    56   void wait()                 { _impl.wait(); }

    58   bool trywait()              { return _impl.trywait(); }

    60   void wait_with_safepoint_check(JavaThread* thread);

    61 };

    63 #endif // SHARE_VM_RUNTIME_SEMAPHORE_HPP

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/runtime/semaphore.hpp@b985cbb00e68

src/share/vm/runtime/semaphore.hpp