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annotate src/os_cpu/windows_x86/vm/os_windows_x86.inline.hpp @ 5318:b5cd7bc05695

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Method entry counters: Enable the flag to collect an execution profile of compiled methods and their callers. This allows to, e.g., detect methods that should be inlined because they are called frequently.
author Christian Wimmer <Christian.Wimmer@Oracle.com>
date Fri, 27 Apr 2012 12:56:39 -0700
parents 7ab5f6318694
children b9a9ed0f8eeb
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1 /*
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2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #ifndef OS_CPU_WINDOWS_X86_VM_OS_WINDOWS_X86_INLINE_HPP
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26 #define OS_CPU_WINDOWS_X86_VM_OS_WINDOWS_X86_INLINE_HPP
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27
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28 #include "runtime/os.hpp"
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29
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30 inline jlong os::rdtsc() {
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31 // 32 bit: 64 bit result in edx:eax
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32 // 64 bit: 64 bit value in rax
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33 uint64_t res;
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34 res = (uint64_t)__rdtsc();
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35 return (jlong)res;
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36 }
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37
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38 #endif // OS_CPU_WINDOWS_X86_VM_OS_WINDOWS_X86_INLINE_HPP