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comparison src/os_cpu/linux_x86/vm/os_linux_x86.hpp @ 4749:7ab5f6318694

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7125934: Add a fast unordered timestamp capability to Hotspot on x86/x64 Summary: Add rdtsc detection and inline generation. Reviewed-by: kamg, dholmes Contributed-by: karen.kinnear@oracle.com
author phh
date Sun, 01 Jan 2012 11:17:59 -0500
parents f95d63e2154a
children b9a9ed0f8eeb
comparison
equal deleted inserted replaced
4732:4ec93d767458 4749:7ab5f6318694
1 /* 1 /*
2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
26 #define OS_CPU_LINUX_X86_VM_OS_LINUX_X86_HPP 26 #define OS_CPU_LINUX_X86_VM_OS_LINUX_X86_HPP
27 27
28 static void setup_fpu(); 28 static void setup_fpu();
29 static bool supports_sse(); 29 static bool supports_sse();
30 30
31 static jlong rdtsc();
32
31 static bool is_allocatable(size_t bytes); 33 static bool is_allocatable(size_t bytes);
32 34
33 // Used to register dynamic code cache area with the OS 35 // Used to register dynamic code cache area with the OS
34 // Note: Currently only used in 64 bit Windows implementations 36 // Note: Currently only used in 64 bit Windows implementations
35 static bool register_code_area(char *low, char *high) { return true; } 37 static bool register_code_area(char *low, char *high) { return true; }