author | never |
Mon, 09 May 2011 19:45:52 -0700 | |
changeset 9632 | cd86c748c12b |
parent 7397 | 5b173b4ca846 |
child 9990 | c8683968c01b |
permissions | -rw-r--r-- |
1 | 1 |
/* |
7397 | 2 |
* Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved. |
1 | 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 |
* |
|
5547
f4b087cbb361
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
670
diff
changeset
|
19 |
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
f4b087cbb361
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
670
diff
changeset
|
20 |
* or visit www.oracle.com if you need additional information or have any |
f4b087cbb361
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
670
diff
changeset
|
21 |
* questions. |
1 | 22 |
* |
23 |
*/ |
|
24 |
||
7397 | 25 |
#include "precompiled.hpp" |
26 |
#include "runtime/atomic.hpp" |
|
27 |
#ifdef TARGET_OS_FAMILY_linux |
|
28 |
# include "os_linux.inline.hpp" |
|
29 |
#endif |
|
30 |
#ifdef TARGET_OS_FAMILY_solaris |
|
31 |
# include "os_solaris.inline.hpp" |
|
32 |
#endif |
|
33 |
#ifdef TARGET_OS_FAMILY_windows |
|
34 |
# include "os_windows.inline.hpp" |
|
35 |
#endif |
|
36 |
#ifdef TARGET_OS_ARCH_linux_x86 |
|
37 |
# include "atomic_linux_x86.inline.hpp" |
|
38 |
#endif |
|
39 |
#ifdef TARGET_OS_ARCH_linux_sparc |
|
40 |
# include "atomic_linux_sparc.inline.hpp" |
|
41 |
#endif |
|
42 |
#ifdef TARGET_OS_ARCH_linux_zero |
|
43 |
# include "atomic_linux_zero.inline.hpp" |
|
44 |
#endif |
|
45 |
#ifdef TARGET_OS_ARCH_solaris_x86 |
|
46 |
# include "atomic_solaris_x86.inline.hpp" |
|
47 |
#endif |
|
48 |
#ifdef TARGET_OS_ARCH_solaris_sparc |
|
49 |
# include "atomic_solaris_sparc.inline.hpp" |
|
50 |
#endif |
|
51 |
#ifdef TARGET_OS_ARCH_windows_x86 |
|
52 |
# include "atomic_windows_x86.inline.hpp" |
|
53 |
#endif |
|
1 | 54 |
|
55 |
jbyte Atomic::cmpxchg(jbyte exchange_value, volatile jbyte* dest, jbyte compare_value) { |
|
56 |
assert(sizeof(jbyte) == 1, "assumption."); |
|
57 |
uintptr_t dest_addr = (uintptr_t)dest; |
|
58 |
uintptr_t offset = dest_addr % sizeof(jint); |
|
59 |
volatile jint* dest_int = (volatile jint*)(dest_addr - offset); |
|
60 |
jint cur = *dest_int; |
|
61 |
jbyte* cur_as_bytes = (jbyte*)(&cur); |
|
62 |
jint new_val = cur; |
|
63 |
jbyte* new_val_as_bytes = (jbyte*)(&new_val); |
|
64 |
new_val_as_bytes[offset] = exchange_value; |
|
65 |
while (cur_as_bytes[offset] == compare_value) { |
|
66 |
jint res = cmpxchg(new_val, dest_int, cur); |
|
67 |
if (res == cur) break; |
|
68 |
cur = res; |
|
69 |
new_val = cur; |
|
70 |
new_val_as_bytes[offset] = exchange_value; |
|
71 |
} |
|
72 |
return cur_as_bytes[offset]; |
|
73 |
} |
|
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
74 |
|
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
75 |
unsigned Atomic::xchg(unsigned int exchange_value, volatile unsigned int* dest) { |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
76 |
assert(sizeof(unsigned int) == sizeof(jint), "more work to do"); |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
77 |
return (unsigned int)Atomic::xchg((jint)exchange_value, (volatile jint*)dest); |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
78 |
} |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
79 |
|
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
80 |
unsigned Atomic::cmpxchg(unsigned int exchange_value, |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
81 |
volatile unsigned int* dest, unsigned int compare_value) { |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
82 |
assert(sizeof(unsigned int) == sizeof(jint), "more work to do"); |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
83 |
return (unsigned int)Atomic::cmpxchg((jint)exchange_value, (volatile jint*)dest, |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
84 |
(jint)compare_value); |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
85 |
} |