Mercurial > hg > truffle
annotate src/cpu/sparc/vm/vm_version_sparc.cpp @ 196:d1605aabd0a1 jdk7-b30
6719955: Update copyright year
Summary: Update copyright year for files that have been modified in 2008
Reviewed-by: ohair, tbell
| author | xdono |
|---|---|
| date | Wed, 02 Jul 2008 12:55:16 -0700 |
| parents | ba764ed4b6f2 |
| children | 6af0a709d52b |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 196 | 2 * Copyright 1997-2008 Sun Microsystems, Inc. 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 * | |
| 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 } | |
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67 #ifdef _LP64 |
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68 // Single issue niagara1 is slower for CompressedOops |
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69 // but niagaras after that it's fine. |
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70 if (!is_niagara1_plus()) { |
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71 if (FLAG_IS_DEFAULT(UseCompressedOops)) { |
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72 FLAG_SET_ERGO(bool, UseCompressedOops, false); |
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73 } |
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74 } |
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75 #endif // _LP64 |
| 0 | 76 #ifdef COMPILER2 |
| 77 // Indirect branch is the same cost as direct | |
| 78 if (FLAG_IS_DEFAULT(UseJumpTables)) { | |
| 79 UseJumpTables = true; | |
| 80 } | |
| 81 // Single-issue, so entry and loop tops are | |
| 82 // aligned on a single instruction boundary | |
| 83 if (FLAG_IS_DEFAULT(InteriorEntryAlignment)) { | |
| 84 InteriorEntryAlignment = 4; | |
| 85 } | |
| 86 if (FLAG_IS_DEFAULT(OptoLoopAlignment)) { | |
| 87 OptoLoopAlignment = 4; | |
| 88 } | |
| 89 #endif | |
| 90 } | |
| 91 | |
| 92 char buf[512]; | |
| 93 jio_snprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s", | |
| 94 (has_v8() ? ", has_v8" : ""), | |
| 95 (has_v9() ? ", has_v9" : ""), | |
| 96 (has_vis1() ? ", has_vis1" : ""), | |
| 97 (has_vis2() ? ", has_vis2" : ""), | |
| 98 (is_ultra3() ? ", is_ultra3" : ""), | |
| 99 (is_sun4v() ? ", is_sun4v" : ""), | |
| 100 (is_niagara1() ? ", is_niagara1" : ""), | |
| 101 (!has_hardware_int_muldiv() ? ", no-muldiv" : ""), | |
| 102 (!has_hardware_fsmuld() ? ", no-fsmuld" : "")); | |
| 103 | |
| 104 // buf is started with ", " or is empty | |
| 105 _features_str = strdup(strlen(buf) > 2 ? buf + 2 : buf); | |
| 106 | |
| 107 #ifndef PRODUCT | |
| 108 if (PrintMiscellaneous && Verbose) { | |
| 109 tty->print("Allocation: "); | |
| 110 if (AllocatePrefetchStyle <= 0) { | |
| 111 tty->print_cr("no prefetching"); | |
| 112 } else { | |
| 113 if (AllocatePrefetchLines > 1) { | |
| 114 tty->print_cr("PREFETCH %d, %d lines of size %d bytes", AllocatePrefetchDistance, AllocatePrefetchLines, AllocatePrefetchStepSize); | |
| 115 } else { | |
| 116 tty->print_cr("PREFETCH %d, one line", AllocatePrefetchDistance); | |
| 117 } | |
| 118 } | |
| 119 if (PrefetchCopyIntervalInBytes > 0) { | |
| 120 tty->print_cr("PrefetchCopyIntervalInBytes %d", PrefetchCopyIntervalInBytes); | |
| 121 } | |
| 122 if (PrefetchScanIntervalInBytes > 0) { | |
| 123 tty->print_cr("PrefetchScanIntervalInBytes %d", PrefetchScanIntervalInBytes); | |
| 124 } | |
| 125 if (PrefetchFieldsAhead > 0) { | |
| 126 tty->print_cr("PrefetchFieldsAhead %d", PrefetchFieldsAhead); | |
| 127 } | |
| 128 } | |
| 129 #endif // PRODUCT | |
| 130 } | |
| 131 | |
| 132 void VM_Version::print_features() { | |
| 133 tty->print_cr("Version:%s", cpu_features()); | |
| 134 } | |
| 135 | |
| 136 int VM_Version::determine_features() { | |
| 137 if (UseV8InstrsOnly) { | |
| 138 NOT_PRODUCT(if (PrintMiscellaneous && Verbose) tty->print_cr("Version is Forced-V8");) | |
| 139 return generic_v8_m; | |
| 140 } | |
| 141 | |
| 142 int features = platform_features(unknown_m); // platform_features() is os_arch specific | |
| 143 | |
| 144 if (features == unknown_m) { | |
| 145 features = generic_v9_m; | |
| 146 warning("Cannot recognize SPARC version. Default to V9"); | |
| 147 } | |
| 148 | |
| 149 if (UseNiagaraInstrs) { | |
| 150 if (is_niagara1(features)) { | |
| 151 // Happy to accomodate... | |
| 152 } else { | |
| 153 NOT_PRODUCT(if (PrintMiscellaneous && Verbose) tty->print_cr("Version is Forced-Niagara");) | |
| 154 features = niagara1_m; | |
| 155 } | |
| 156 } else { | |
| 157 if (is_niagara1(features) && !FLAG_IS_DEFAULT(UseNiagaraInstrs)) { | |
| 158 NOT_PRODUCT(if (PrintMiscellaneous && Verbose) tty->print_cr("Version is Forced-Not-Niagara");) | |
| 159 features &= ~niagara1_unique_m; | |
| 160 } else { | |
| 161 // Happy to accomodate... | |
| 162 } | |
| 163 } | |
| 164 | |
| 165 return features; | |
| 166 } | |
| 167 | |
| 168 static int saved_features = 0; | |
| 169 | |
| 170 void VM_Version::allow_all() { | |
| 171 saved_features = _features; | |
| 172 _features = all_features_m; | |
| 173 } | |
| 174 | |
| 175 void VM_Version::revert() { | |
| 176 _features = saved_features; | |
| 177 } | |
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178 |
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179 unsigned int VM_Version::calc_parallel_worker_threads() { |
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180 unsigned int result; |
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181 if (is_niagara1_plus()) { |
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182 result = nof_parallel_worker_threads(5, 16, 8); |
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183 } else { |
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184 result = nof_parallel_worker_threads(5, 8, 8); |
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185 } |
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186 return result; |
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187 } |