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1 /*
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2 * Copyright 2001-2005 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 # include "incls/_precompiled.incl"
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26 # include "incls/_generationSpec.cpp.incl"
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27
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28 Generation* GenerationSpec::init(ReservedSpace rs, int level,
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29 GenRemSet* remset) {
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30 switch (name()) {
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31 case Generation::DefNew:
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32 return new DefNewGeneration(rs, init_size(), level);
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33
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34 case Generation::MarkSweepCompact:
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35 return new TenuredGeneration(rs, init_size(), level, remset);
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36
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37 #ifndef SERIALGC
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38 case Generation::ParNew:
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39 return new ParNewGeneration(rs, init_size(), level);
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40
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41 case Generation::ASParNew:
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42 return new ASParNewGeneration(rs,
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43 init_size(),
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44 init_size() /* min size */,
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45 level);
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46
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47 case Generation::ConcurrentMarkSweep: {
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48 assert(UseConcMarkSweepGC, "UseConcMarkSweepGC should be set");
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49 CardTableRS* ctrs = remset->as_CardTableRS();
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50 if (ctrs == NULL) {
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51 vm_exit_during_initialization("Rem set incompatibility.");
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52 }
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53 // Otherwise
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54 // The constructor creates the CMSCollector if needed,
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55 // else registers with an existing CMSCollector
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56
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57 ConcurrentMarkSweepGeneration* g = NULL;
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58 g = new ConcurrentMarkSweepGeneration(rs,
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59 init_size(), level, ctrs, UseCMSAdaptiveFreeLists,
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60 (FreeBlockDictionary::DictionaryChoice)CMSDictionaryChoice);
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61
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62 g->initialize_performance_counters();
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63
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64 return g;
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65 }
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66
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67 case Generation::ASConcurrentMarkSweep: {
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68 assert(UseConcMarkSweepGC, "UseConcMarkSweepGC should be set");
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69 CardTableRS* ctrs = remset->as_CardTableRS();
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70 if (ctrs == NULL) {
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71 vm_exit_during_initialization("Rem set incompatibility.");
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72 }
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73 // Otherwise
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74 // The constructor creates the CMSCollector if needed,
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75 // else registers with an existing CMSCollector
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76
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77 ASConcurrentMarkSweepGeneration* g = NULL;
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78 g = new ASConcurrentMarkSweepGeneration(rs,
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79 init_size(), level, ctrs, UseCMSAdaptiveFreeLists,
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80 (FreeBlockDictionary::DictionaryChoice)CMSDictionaryChoice);
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81
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82 g->initialize_performance_counters();
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83
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84 return g;
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85 }
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86 #endif // SERIALGC
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87
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88 default:
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89 guarantee(false, "unrecognized GenerationName");
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90 return NULL;
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91 }
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92 }
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93
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94
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95 PermanentGenerationSpec::PermanentGenerationSpec(PermGen::Name name,
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96 size_t init_size, size_t max_size,
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97 size_t read_only_size, size_t read_write_size,
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98 size_t misc_data_size, size_t misc_code_size) {
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99 _name = name;
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100 _init_size = init_size;
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101
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102 if (UseSharedSpaces || DumpSharedSpaces) {
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103 _enable_shared_spaces = true;
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104 if (UseSharedSpaces) {
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105 // Override shared space sizes from those in the file.
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106 FileMapInfo* mapinfo = FileMapInfo::current_info();
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107 _read_only_size = mapinfo->space_capacity(CompactingPermGenGen::ro);
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108 _read_write_size = mapinfo->space_capacity(CompactingPermGenGen::rw);
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109 _misc_data_size = mapinfo->space_capacity(CompactingPermGenGen::md);
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110 _misc_code_size = mapinfo->space_capacity(CompactingPermGenGen::mc);
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111 } else {
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112 _read_only_size = read_only_size;
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113 _read_write_size = read_write_size;
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114 _misc_data_size = misc_data_size;
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115 _misc_code_size = misc_code_size;
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116 }
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117 } else {
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118 _enable_shared_spaces = false;
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119 _read_only_size = 0;
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120 _read_write_size = 0;
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121 _misc_data_size = 0;
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122 _misc_code_size = 0;
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123 }
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124
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125 _max_size = max_size;
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126 }
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127
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128
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129 PermGen* PermanentGenerationSpec::init(ReservedSpace rs,
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130 size_t init_size,
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131 GenRemSet *remset) {
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132
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133 // Break the reserved spaces into pieces for the permanent space
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134 // and the shared spaces.
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135 ReservedSpace perm_rs = rs.first_part(_max_size, UseSharedSpaces,
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136 UseSharedSpaces);
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137 ReservedSpace shared_rs = rs.last_part(_max_size);
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138
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139 if (enable_shared_spaces()) {
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140 if (!perm_rs.is_reserved() ||
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141 perm_rs.base() + perm_rs.size() != shared_rs.base()) {
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142 FileMapInfo* mapinfo = FileMapInfo::current_info();
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143 mapinfo->fail_continue("Sharing disabled - unable to "
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144 "reserve address space.");
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145 shared_rs.release();
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146 disable_sharing();
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147 }
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148 }
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149
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150 switch (name()) {
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151 case PermGen::MarkSweepCompact:
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152 return new CompactingPermGen(perm_rs, shared_rs, init_size, remset, this);
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153
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154 #ifndef SERIALGC
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155 case PermGen::MarkSweep:
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156 guarantee(false, "NYI");
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157 return NULL;
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158
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159 case PermGen::ConcurrentMarkSweep: {
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160 assert(UseConcMarkSweepGC, "UseConcMarkSweepGC should be set");
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161 CardTableRS* ctrs = remset->as_CardTableRS();
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162 if (ctrs == NULL) {
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163 vm_exit_during_initialization("RemSet/generation incompatibility.");
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164 }
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165 // XXXPERM
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166 return new CMSPermGen(perm_rs, init_size, ctrs,
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167 (FreeBlockDictionary::DictionaryChoice)CMSDictionaryChoice);
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168 }
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169 #endif // SERIALGC
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170 default:
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171 guarantee(false, "unrecognized GenerationName");
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172 return NULL;
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173 }
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174 }
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175
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176
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177 // Alignment
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178 void PermanentGenerationSpec::align(size_t alignment) {
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179 _init_size = align_size_up(_init_size, alignment);
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180 _max_size = align_size_up(_max_size, alignment);
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181 _read_only_size = align_size_up(_read_only_size, alignment);
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182 _read_write_size = align_size_up(_read_write_size, alignment);
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183 _misc_data_size = align_size_up(_misc_data_size, alignment);
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184 _misc_code_size = align_size_up(_misc_code_size, alignment);
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185
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186 assert(enable_shared_spaces() || (_read_only_size + _read_write_size == 0),
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187 "Shared space when disabled?");
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188 }
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