Mercurial > hg > graal-compiler
annotate src/cpu/sparc/vm/vm_version_sparc.cpp @ 10:28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
Summary: Use the same default number of GC threads as used by ParNewGC and ConcMarkSweepGC (i.e., the 5/8th rule).
Reviewed-by: ysr, tonyp
author | jmasa |
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date | Fri, 22 Feb 2008 17:17:14 -0800 |
parents | a61af66fc99e |
children | ba764ed4b6f2 |
rev | line source |
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0 | 1 /* |
2 * Copyright 1997-2007 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 # include "incls/_precompiled.incl" | |
26 # include "incls/_vm_version_sparc.cpp.incl" | |
27 | |
28 int VM_Version::_features = VM_Version::unknown_m; | |
29 const char* VM_Version::_features_str = ""; | |
30 | |
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31 bool VM_Version::is_niagara1_plus() { |
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32 // This is a placeholder until the real test is determined. |
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33 return is_niagara1() && |
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34 (os::processor_count() > maximum_niagara1_processor_count()); |
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35 } |
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36 |
0 | 37 void VM_Version::initialize() { |
38 _features = determine_features(); | |
39 PrefetchCopyIntervalInBytes = prefetch_copy_interval_in_bytes(); | |
40 PrefetchScanIntervalInBytes = prefetch_scan_interval_in_bytes(); | |
41 PrefetchFieldsAhead = prefetch_fields_ahead(); | |
42 | |
43 // Allocation prefetch settings | |
44 intx cache_line_size = L1_data_cache_line_size(); | |
45 if( cache_line_size > AllocatePrefetchStepSize ) | |
46 AllocatePrefetchStepSize = cache_line_size; | |
47 if( FLAG_IS_DEFAULT(AllocatePrefetchLines) ) | |
48 AllocatePrefetchLines = 3; // Optimistic value | |
49 assert( AllocatePrefetchLines > 0, "invalid value"); | |
50 if( AllocatePrefetchLines < 1 ) // set valid value in product VM | |
51 AllocatePrefetchLines = 1; // Conservative value | |
52 | |
53 AllocatePrefetchDistance = allocate_prefetch_distance(); | |
54 AllocatePrefetchStyle = allocate_prefetch_style(); | |
55 | |
56 assert(AllocatePrefetchDistance % AllocatePrefetchStepSize == 0, "invalid value"); | |
57 | |
58 UseSSE = 0; // Only on x86 and x64 | |
59 | |
60 _supports_cx8 = has_v9(); | |
61 | |
62 if (is_niagara1()) { | |
63 // Indirect branch is the same cost as direct | |
64 if (FLAG_IS_DEFAULT(UseInlineCaches)) { | |
65 UseInlineCaches = false; | |
66 } | |
67 #ifdef COMPILER2 | |
68 // Indirect branch is the same cost as direct | |
69 if (FLAG_IS_DEFAULT(UseJumpTables)) { | |
70 UseJumpTables = true; | |
71 } | |
72 // Single-issue, so entry and loop tops are | |
73 // aligned on a single instruction boundary | |
74 if (FLAG_IS_DEFAULT(InteriorEntryAlignment)) { | |
75 InteriorEntryAlignment = 4; | |
76 } | |
77 if (FLAG_IS_DEFAULT(OptoLoopAlignment)) { | |
78 OptoLoopAlignment = 4; | |
79 } | |
80 #endif | |
81 } | |
82 | |
83 char buf[512]; | |
84 jio_snprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s", | |
85 (has_v8() ? ", has_v8" : ""), | |
86 (has_v9() ? ", has_v9" : ""), | |
87 (has_vis1() ? ", has_vis1" : ""), | |
88 (has_vis2() ? ", has_vis2" : ""), | |
89 (is_ultra3() ? ", is_ultra3" : ""), | |
90 (is_sun4v() ? ", is_sun4v" : ""), | |
91 (is_niagara1() ? ", is_niagara1" : ""), | |
92 (!has_hardware_int_muldiv() ? ", no-muldiv" : ""), | |
93 (!has_hardware_fsmuld() ? ", no-fsmuld" : "")); | |
94 | |
95 // buf is started with ", " or is empty | |
96 _features_str = strdup(strlen(buf) > 2 ? buf + 2 : buf); | |
97 | |
98 #ifndef PRODUCT | |
99 if (PrintMiscellaneous && Verbose) { | |
100 tty->print("Allocation: "); | |
101 if (AllocatePrefetchStyle <= 0) { | |
102 tty->print_cr("no prefetching"); | |
103 } else { | |
104 if (AllocatePrefetchLines > 1) { | |
105 tty->print_cr("PREFETCH %d, %d lines of size %d bytes", AllocatePrefetchDistance, AllocatePrefetchLines, AllocatePrefetchStepSize); | |
106 } else { | |
107 tty->print_cr("PREFETCH %d, one line", AllocatePrefetchDistance); | |
108 } | |
109 } | |
110 if (PrefetchCopyIntervalInBytes > 0) { | |
111 tty->print_cr("PrefetchCopyIntervalInBytes %d", PrefetchCopyIntervalInBytes); | |
112 } | |
113 if (PrefetchScanIntervalInBytes > 0) { | |
114 tty->print_cr("PrefetchScanIntervalInBytes %d", PrefetchScanIntervalInBytes); | |
115 } | |
116 if (PrefetchFieldsAhead > 0) { | |
117 tty->print_cr("PrefetchFieldsAhead %d", PrefetchFieldsAhead); | |
118 } | |
119 } | |
120 #endif // PRODUCT | |
121 } | |
122 | |
123 void VM_Version::print_features() { | |
124 tty->print_cr("Version:%s", cpu_features()); | |
125 } | |
126 | |
127 int VM_Version::determine_features() { | |
128 if (UseV8InstrsOnly) { | |
129 NOT_PRODUCT(if (PrintMiscellaneous && Verbose) tty->print_cr("Version is Forced-V8");) | |
130 return generic_v8_m; | |
131 } | |
132 | |
133 int features = platform_features(unknown_m); // platform_features() is os_arch specific | |
134 | |
135 if (features == unknown_m) { | |
136 features = generic_v9_m; | |
137 warning("Cannot recognize SPARC version. Default to V9"); | |
138 } | |
139 | |
140 if (UseNiagaraInstrs) { | |
141 if (is_niagara1(features)) { | |
142 // Happy to accomodate... | |
143 } else { | |
144 NOT_PRODUCT(if (PrintMiscellaneous && Verbose) tty->print_cr("Version is Forced-Niagara");) | |
145 features = niagara1_m; | |
146 } | |
147 } else { | |
148 if (is_niagara1(features) && !FLAG_IS_DEFAULT(UseNiagaraInstrs)) { | |
149 NOT_PRODUCT(if (PrintMiscellaneous && Verbose) tty->print_cr("Version is Forced-Not-Niagara");) | |
150 features &= ~niagara1_unique_m; | |
151 } else { | |
152 // Happy to accomodate... | |
153 } | |
154 } | |
155 | |
156 return features; | |
157 } | |
158 | |
159 static int saved_features = 0; | |
160 | |
161 void VM_Version::allow_all() { | |
162 saved_features = _features; | |
163 _features = all_features_m; | |
164 } | |
165 | |
166 void VM_Version::revert() { | |
167 _features = saved_features; | |
168 } | |
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169 |
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170 unsigned int VM_Version::calc_parallel_worker_threads() { |
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171 unsigned int result; |
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172 if (is_niagara1_plus()) { |
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173 result = nof_parallel_worker_threads(5, 16, 8); |
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174 } else { |
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175 result = nof_parallel_worker_threads(5, 8, 8); |
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176 } |
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177 return result; |
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178 } |