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annotate src/os_cpu/solaris_x86/vm/threadLS_solaris_x86.hpp @ 17947:1772223a25a2
8037112: gc/g1/TestHumongousAllocInitialMark.java caused SIGSEGV
Reviewed-by: brutisso, mgerdin
author | pliden |
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date | Fri, 11 Apr 2014 11:00:12 +0200 |
parents | f95d63e2154a |
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rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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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. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef OS_CPU_SOLARIS_X86_VM_THREADLS_SOLARIS_X86_HPP |
26 #define OS_CPU_SOLARIS_X86_VM_THREADLS_SOLARIS_X86_HPP | |
27 | |
0 | 28 // Processor dependent parts of ThreadLocalStorage |
29 | |
30 private: | |
31 static Thread* _get_thread_cache[]; // index by [(raw_id>>9)^(raw_id>>20) % _pd_cache_size] | |
32 static Thread* get_thread_via_cache_slowly(uintptr_t raw_id, int index); | |
33 | |
34 NOT_PRODUCT(static int _tcacheHit;) | |
35 NOT_PRODUCT(static int _tcacheMiss;) | |
36 | |
37 public: | |
38 // Cache hit/miss statistics | |
39 static void print_statistics() PRODUCT_RETURN; | |
40 | |
41 enum Constants { | |
42 #ifdef AMD64 | |
43 _pd_cache_size = 256*2 // projected typical # of threads * 2 | |
44 #else | |
45 _pd_cache_size = 128*2 // projected typical # of threads * 2 | |
46 #endif // AMD64 | |
47 }; | |
48 | |
49 enum pd_tlsAccessMode { | |
50 pd_tlsAccessUndefined = -1, | |
51 pd_tlsAccessSlow = 0, | |
52 pd_tlsAccessIndirect = 1, | |
53 pd_tlsAccessDirect = 2 | |
54 } ; | |
55 | |
56 static void set_thread_in_slot (Thread *) ; | |
57 | |
58 static pd_tlsAccessMode pd_getTlsAccessMode () ; | |
59 static ptrdiff_t pd_getTlsOffset () ; | |
60 | |
61 static uintptr_t pd_raw_thread_id() { | |
62 #ifdef _GNU_SOURCE | |
63 #ifdef AMD64 | |
64 uintptr_t rv; | |
65 __asm__ __volatile__ ("movq %%fs:0, %0" : "=r"(rv)); | |
66 return rv; | |
67 #else | |
68 return gs_thread(); | |
69 #endif // AMD64 | |
70 #else //_GNU_SOURCE | |
71 return _raw_thread_id(); | |
72 #endif //_GNU_SOURCE | |
73 } | |
74 | |
75 static int pd_cache_index(uintptr_t raw_id) { | |
76 // Copied from the sparc version. Dave said it should also work fine | |
77 // for solx86. | |
78 int ix = (int) (((raw_id >> 9) ^ (raw_id >> 20)) % _pd_cache_size); | |
79 return ix; | |
80 } | |
81 | |
82 // Java Thread | |
83 static inline Thread* thread(); | |
1972 | 84 |
85 #endif // OS_CPU_SOLARIS_X86_VM_THREADLS_SOLARIS_X86_HPP |