Mercurial > jdk8-mips64-public > hotspot / annotate
src/share/vm/utilities/accessFlags.cpp@42f27b59c550 (annotated)
src/share/vm/utilities/accessFlags.cpp
Wed, 26 Nov 2014 08:57:40 -0800
- author
- asaha
- date
- Wed, 26 Nov 2014 08:57:40 -0800
- changeset 7495
- 42f27b59c550
- parent 7333
- b12a2a9b05ca
- child 7535
- 7ae4e26cb1e0
- permissions
- -rw-r--r--
Merge
| duke@435 | 1 | /* |
| dcubed@4562 | 2 | * Copyright (c) 1997, 2013, 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 | #include "precompiled.hpp" |
| stefank@2314 | 26 | #include "oops/oop.inline.hpp" |
| stefank@2314 | 27 | #include "utilities/accessFlags.hpp" |
| stefank@2314 | 28 | #ifdef TARGET_OS_FAMILY_linux |
| stefank@2314 | 29 | # include "os_linux.inline.hpp" |
| stefank@2314 | 30 | #endif |
| stefank@2314 | 31 | #ifdef TARGET_OS_FAMILY_solaris |
| stefank@2314 | 32 | # include "os_solaris.inline.hpp" |
| stefank@2314 | 33 | #endif |
| stefank@2314 | 34 | #ifdef TARGET_OS_FAMILY_windows |
| stefank@2314 | 35 | # include "os_windows.inline.hpp" |
| stefank@2314 | 36 | #endif |
| goetz@6461 | 37 | #ifdef TARGET_OS_FAMILY_aix |
| goetz@6461 | 38 | # include "os_aix.inline.hpp" |
| goetz@6461 | 39 | #endif |
| never@3156 | 40 | #ifdef TARGET_OS_FAMILY_bsd |
| never@3156 | 41 | # include "os_bsd.inline.hpp" |
| never@3156 | 42 | #endif |
| duke@435 | 43 | |
| duke@435 | 44 | |
| duke@435 | 45 | void AccessFlags::atomic_set_bits(jint bits) { |
| duke@435 | 46 | // Atomically update the flags with the bits given |
| duke@435 | 47 | jint old_flags, new_flags, f; |
| duke@435 | 48 | do { |
| duke@435 | 49 | old_flags = _flags; |
| duke@435 | 50 | new_flags = old_flags | bits; |
| duke@435 | 51 | f = Atomic::cmpxchg(new_flags, &_flags, old_flags); |
| duke@435 | 52 | } while(f != old_flags); |
| duke@435 | 53 | } |
| duke@435 | 54 | |
| duke@435 | 55 | void AccessFlags::atomic_clear_bits(jint bits) { |
| duke@435 | 56 | // Atomically update the flags with the bits given |
| duke@435 | 57 | jint old_flags, new_flags, f; |
| duke@435 | 58 | do { |
| duke@435 | 59 | old_flags = _flags; |
| duke@435 | 60 | new_flags = old_flags & ~bits; |
| duke@435 | 61 | f = Atomic::cmpxchg(new_flags, &_flags, old_flags); |
| duke@435 | 62 | } while(f != old_flags); |
| duke@435 | 63 | } |
| duke@435 | 64 | |
| stefank@7333 | 65 | // Returns true iff this thread succeeded setting the bit. |
| stefank@7333 | 66 | bool AccessFlags::atomic_set_one_bit(jint bit) { |
| stefank@7333 | 67 | // Atomically update the flags with the bit given |
| stefank@7333 | 68 | jint old_flags, new_flags, f; |
| stefank@7333 | 69 | bool is_setting_bit = false; |
| stefank@7333 | 70 | do { |
| stefank@7333 | 71 | old_flags = _flags; |
| stefank@7333 | 72 | new_flags = old_flags | bit; |
| stefank@7333 | 73 | is_setting_bit = old_flags != new_flags; |
| stefank@7333 | 74 | f = Atomic::cmpxchg(new_flags, &_flags, old_flags); |
| stefank@7333 | 75 | } while(f != old_flags); |
| stefank@7333 | 76 | |
| stefank@7333 | 77 | return is_setting_bit; |
| stefank@7333 | 78 | } |
| stefank@7333 | 79 | |
| dcubed@4562 | 80 | #if !defined(PRODUCT) || INCLUDE_JVMTI |
| duke@435 | 81 | |
| duke@435 | 82 | void AccessFlags::print_on(outputStream* st) const { |
| duke@435 | 83 | if (is_public ()) st->print("public " ); |
| duke@435 | 84 | if (is_private ()) st->print("private " ); |
| duke@435 | 85 | if (is_protected ()) st->print("protected " ); |
| duke@435 | 86 | if (is_static ()) st->print("static " ); |
| duke@435 | 87 | if (is_final ()) st->print("final " ); |
| duke@435 | 88 | if (is_synchronized()) st->print("synchronized "); |
| duke@435 | 89 | if (is_volatile ()) st->print("volatile " ); |
| duke@435 | 90 | if (is_transient ()) st->print("transient " ); |
| duke@435 | 91 | if (is_native ()) st->print("native " ); |
| duke@435 | 92 | if (is_interface ()) st->print("interface " ); |
| duke@435 | 93 | if (is_abstract ()) st->print("abstract " ); |
| duke@435 | 94 | if (is_strict ()) st->print("strict " ); |
| duke@435 | 95 | if (is_synthetic ()) st->print("synthetic " ); |
| duke@435 | 96 | if (is_old ()) st->print("{old} " ); |
| duke@435 | 97 | if (is_obsolete ()) st->print("{obsolete} " ); |
| coleenp@4037 | 98 | if (on_stack ()) st->print("{on_stack} " ); |
| duke@435 | 99 | } |
| duke@435 | 100 | |
| dcubed@4562 | 101 | #endif // !PRODUCT || INCLUDE_JVMTI |
| duke@435 | 102 | |
| duke@435 | 103 | void accessFlags_init() { |
| duke@435 | 104 | assert(sizeof(AccessFlags) == sizeof(jint), "just checking size of flags"); |
| duke@435 | 105 | } |
