Mercurial > jdk8-mips64-public > hotspot / annotate
src/share/vm/prims/nativeLookup.hpp@4c84d351cca9 (annotated)
src/share/vm/prims/nativeLookup.hpp
Fri, 16 Aug 2013 13:22:32 +0200
- author
- stefank
- date
- Fri, 16 Aug 2013 13:22:32 +0200
- changeset 5578
- 4c84d351cca9
- parent 3500
- 0382d2b469b2
- child 6876
- 710a3c8b516e
- permissions
- -rw-r--r--
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
Summary: Replace the broken large pages implementation on Linux. New flag: -XX:+UseTransparentHugePages - Linux specific flag to turn on transparent huge page hinting with madvise(..., MAP_HUGETLB). Changed behavior: -XX:+UseLargePages - tries to use -XX:+UseTransparentHugePages before trying other large pages implementations (on Linux). Changed behavior: -XX:+UseHugeTLBFS - Use upfront allocation of Large Pages instead of using the broken implementation to dynamically committing large pages. Changed behavior: -XX:LargePageSizeInBytes - Turned off the ability to use this flag on Linux and provides warning to user if set to a value different than the OS chosen large page size. Changed behavior: Setting no large page size - Now defaults to use -XX:UseTransparentHugePages if the OS supports it. Previously, -XX:+UseHugeTLBFS was chosen if the OS was configured to use large pages.
Reviewed-by: tschatzl, dcubed, brutisso
| duke@435 | 1 | /* |
| never@3500 | 2 | * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
| duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| duke@435 | 4 | * |
| duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
| duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| duke@435 | 7 | * published by the Free Software Foundation. |
| duke@435 | 8 | * |
| duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| duke@435 | 13 | * accompanied this code). |
| duke@435 | 14 | * |
| duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
| duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| duke@435 | 18 | * |
| trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
| trims@1907 | 21 | * questions. |
| duke@435 | 22 | * |
| duke@435 | 23 | */ |
| duke@435 | 24 | |
| stefank@2314 | 25 | #ifndef SHARE_VM_PRIMS_NATIVELOOKUP_HPP |
| stefank@2314 | 26 | #define SHARE_VM_PRIMS_NATIVELOOKUP_HPP |
| stefank@2314 | 27 | |
| stefank@2314 | 28 | #include "runtime/handles.hpp" |
| stefank@2314 | 29 | #include "utilities/top.hpp" |
| stefank@2314 | 30 | |
| duke@435 | 31 | // NativeLookup provides an interface for finding DLL entry points for |
| duke@435 | 32 | // Java native functions. |
| duke@435 | 33 | |
| duke@435 | 34 | class NativeLookup : AllStatic { |
| duke@435 | 35 | private: |
| duke@435 | 36 | // JNI name computation |
| duke@435 | 37 | static char* pure_jni_name(methodHandle method); |
| duke@435 | 38 | static char* long_jni_name(methodHandle method); |
| never@3500 | 39 | static char* critical_jni_name(methodHandle method); |
| duke@435 | 40 | |
| duke@435 | 41 | // Style specific lookup |
| duke@435 | 42 | static address lookup_style(methodHandle method, char* pure_name, const char* long_name, int args_size, bool os_style, bool& in_base_library, TRAPS); |
| never@3500 | 43 | static address lookup_critical_style(methodHandle method, char* pure_name, const char* long_name, int args_size, bool os_style); |
| duke@435 | 44 | static address lookup_base (methodHandle method, bool& in_base_library, TRAPS); |
| duke@435 | 45 | static address lookup_entry(methodHandle method, bool& in_base_library, TRAPS); |
| duke@435 | 46 | static address lookup_entry_prefixed(methodHandle method, bool& in_base_library, TRAPS); |
| duke@435 | 47 | public: |
| duke@435 | 48 | // Lookup native function. May throw UnsatisfiedLinkError. |
| duke@435 | 49 | static address lookup(methodHandle method, bool& in_base_library, TRAPS); |
| never@3500 | 50 | static address lookup_critical_entry(methodHandle method); |
| duke@435 | 51 | |
| duke@435 | 52 | // Lookup native functions in base library. |
| duke@435 | 53 | static address base_library_lookup(const char* class_name, const char* method_name, const char* signature); |
| duke@435 | 54 | }; |
| stefank@2314 | 55 | |
| stefank@2314 | 56 | #endif // SHARE_VM_PRIMS_NATIVELOOKUP_HPP |
