0
|
1 /*
|
|
2 * Copyright 1998-2007 Sun Microsystems, Inc. All Rights Reserved.
|
|
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 *
|
|
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
|
20 * CA 95054 USA or visit www.sun.com if you need additional information or
|
|
21 * have any questions.
|
|
22 *
|
|
23 */
|
|
24
|
|
25 // Processor dependent parts of ThreadLocalStorage
|
|
26
|
|
27 private:
|
|
28 static Thread* _get_thread_cache[]; // index by [(raw_id>>9)^(raw_id>>20) % _pd_cache_size]
|
|
29 static Thread* get_thread_via_cache_slowly(uintptr_t raw_id, int index);
|
|
30
|
|
31 NOT_PRODUCT(static int _tcacheHit;)
|
|
32 NOT_PRODUCT(static int _tcacheMiss;)
|
|
33
|
|
34 public:
|
|
35 // Cache hit/miss statistics
|
|
36 static void print_statistics() PRODUCT_RETURN;
|
|
37
|
|
38 enum Constants {
|
|
39 #ifdef AMD64
|
|
40 _pd_cache_size = 256*2 // projected typical # of threads * 2
|
|
41 #else
|
|
42 _pd_cache_size = 128*2 // projected typical # of threads * 2
|
|
43 #endif // AMD64
|
|
44 };
|
|
45
|
|
46 enum pd_tlsAccessMode {
|
|
47 pd_tlsAccessUndefined = -1,
|
|
48 pd_tlsAccessSlow = 0,
|
|
49 pd_tlsAccessIndirect = 1,
|
|
50 pd_tlsAccessDirect = 2
|
|
51 } ;
|
|
52
|
|
53 static void set_thread_in_slot (Thread *) ;
|
|
54
|
|
55 static pd_tlsAccessMode pd_getTlsAccessMode () ;
|
|
56 static ptrdiff_t pd_getTlsOffset () ;
|
|
57
|
|
58 static uintptr_t pd_raw_thread_id() {
|
|
59 #ifdef _GNU_SOURCE
|
|
60 #ifdef AMD64
|
|
61 uintptr_t rv;
|
|
62 __asm__ __volatile__ ("movq %%fs:0, %0" : "=r"(rv));
|
|
63 return rv;
|
|
64 #else
|
|
65 return gs_thread();
|
|
66 #endif // AMD64
|
|
67 #else //_GNU_SOURCE
|
|
68 return _raw_thread_id();
|
|
69 #endif //_GNU_SOURCE
|
|
70 }
|
|
71
|
|
72 static int pd_cache_index(uintptr_t raw_id) {
|
|
73 // Copied from the sparc version. Dave said it should also work fine
|
|
74 // for solx86.
|
|
75 int ix = (int) (((raw_id >> 9) ^ (raw_id >> 20)) % _pd_cache_size);
|
|
76 return ix;
|
|
77 }
|
|
78
|
|
79 // Java Thread
|
|
80 static inline Thread* thread();
|