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1 /* |
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2 * Copyright 1997-2007 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 #if !defined(COMPILER1) && !defined(COMPILER2) |
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26 define_pd_global(bool, BackgroundCompilation, false); |
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27 define_pd_global(bool, UseTLAB, false); |
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28 define_pd_global(bool, CICompileOSR, false); |
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29 define_pd_global(bool, UseTypeProfile, false); |
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30 define_pd_global(bool, UseOnStackReplacement, false); |
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31 define_pd_global(bool, InlineIntrinsics, false); |
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32 define_pd_global(bool, PreferInterpreterNativeStubs, true); |
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33 define_pd_global(bool, ProfileInterpreter, false); |
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34 define_pd_global(bool, ProfileTraps, false); |
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35 define_pd_global(bool, TieredCompilation, false); |
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36 |
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37 define_pd_global(intx, CompileThreshold, 0); |
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38 define_pd_global(intx, Tier2CompileThreshold, 0); |
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39 define_pd_global(intx, Tier3CompileThreshold, 0); |
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40 define_pd_global(intx, Tier4CompileThreshold, 0); |
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41 |
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42 define_pd_global(intx, BackEdgeThreshold, 0); |
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43 define_pd_global(intx, Tier2BackEdgeThreshold, 0); |
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44 define_pd_global(intx, Tier3BackEdgeThreshold, 0); |
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45 define_pd_global(intx, Tier4BackEdgeThreshold, 0); |
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46 |
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47 define_pd_global(intx, OnStackReplacePercentage, 0); |
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48 define_pd_global(bool, ResizeTLAB, false); |
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49 define_pd_global(intx, FreqInlineSize, 0); |
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50 define_pd_global(intx, NewSizeThreadIncrease, 4*K); |
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51 define_pd_global(intx, NewRatio, 4); |
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52 define_pd_global(intx, InlineClassNatives, true); |
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53 define_pd_global(intx, InlineUnsafeOps, true); |
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54 define_pd_global(intx, InitialCodeCacheSize, 160*K); |
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55 define_pd_global(intx, ReservedCodeCacheSize, 32*M); |
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56 define_pd_global(intx, CodeCacheExpansionSize, 32*K); |
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57 define_pd_global(intx, CodeCacheMinBlockLength, 1); |
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58 define_pd_global(uintx,PermSize, ScaleForWordSize(4*M)); |
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59 define_pd_global(uintx,MaxPermSize, ScaleForWordSize(64*M)); |
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60 define_pd_global(bool, NeverActAsServerClassMachine, true); |
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61 define_pd_global(uintx, DefaultMaxRAM, 1*G); |
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62 #define CI_COMPILER_COUNT 0 |
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63 #else |
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64 |
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65 #ifdef COMPILER2 |
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66 #define CI_COMPILER_COUNT 2 |
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67 #else |
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68 #define CI_COMPILER_COUNT 1 |
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69 #endif // COMPILER2 |
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70 |
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71 #endif // no compilers |
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72 |
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73 |
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74 // string type aliases used only in this file |
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75 typedef const char* ccstr; |
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76 typedef const char* ccstrlist; // represents string arguments which accumulate |
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77 |
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78 enum FlagValueOrigin { |
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79 DEFAULT = 0, |
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80 COMMAND_LINE = 1, |
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81 ENVIRON_VAR = 2, |
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82 CONFIG_FILE = 3, |
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83 MANAGEMENT = 4, |
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84 ERGONOMIC = 5, |
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85 ATTACH_ON_DEMAND = 6, |
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86 INTERNAL = 99 |
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87 }; |
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88 |
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89 struct Flag { |
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90 const char *type; |
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91 const char *name; |
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92 void* addr; |
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93 const char *kind; |
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94 FlagValueOrigin origin; |
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95 |
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96 // points to all Flags static array |
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97 static Flag *flags; |
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98 |
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99 // number of flags |
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100 static size_t numFlags; |
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101 |
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102 static Flag* find_flag(char* name, size_t length); |
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103 |
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104 bool is_bool() const { return strcmp(type, "bool") == 0; } |
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105 bool get_bool() const { return *((bool*) addr); } |
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106 void set_bool(bool value) { *((bool*) addr) = value; } |
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107 |
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108 bool is_intx() const { return strcmp(type, "intx") == 0; } |
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109 intx get_intx() const { return *((intx*) addr); } |
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110 void set_intx(intx value) { *((intx*) addr) = value; } |
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111 |
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112 bool is_uintx() const { return strcmp(type, "uintx") == 0; } |
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113 uintx get_uintx() const { return *((uintx*) addr); } |
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114 void set_uintx(uintx value) { *((uintx*) addr) = value; } |
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115 |
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116 bool is_double() const { return strcmp(type, "double") == 0; } |
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117 double get_double() const { return *((double*) addr); } |
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118 void set_double(double value) { *((double*) addr) = value; } |
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119 |
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120 bool is_ccstr() const { return strcmp(type, "ccstr") == 0 || strcmp(type, "ccstrlist") == 0; } |
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121 bool ccstr_accumulates() const { return strcmp(type, "ccstrlist") == 0; } |
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122 ccstr get_ccstr() const { return *((ccstr*) addr); } |
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123 void set_ccstr(ccstr value) { *((ccstr*) addr) = value; } |
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124 |
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125 bool is_unlocker() const; |
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126 bool is_unlocked() const; |
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127 bool is_writeable() const; |
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128 bool is_external() const; |
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129 |
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130 void print_on(outputStream* st); |
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131 void print_as_flag(outputStream* st); |
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132 }; |
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133 |
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134 // debug flags control various aspects of the VM and are global accessible |
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135 |
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136 // use FlagSetting to temporarily change some debug flag |
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137 // e.g. FlagSetting fs(DebugThisAndThat, true); |
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138 // restored to previous value upon leaving scope |
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139 class FlagSetting { |
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140 bool val; |
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141 bool* flag; |
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142 public: |
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143 FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; } |
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144 ~FlagSetting() { *flag = val; } |
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145 }; |
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146 |
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147 |
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148 class CounterSetting { |
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149 intx* counter; |
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150 public: |
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151 CounterSetting(intx* cnt) { counter = cnt; (*counter)++; } |
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152 ~CounterSetting() { (*counter)--; } |
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153 }; |
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154 |
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155 |
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156 class IntFlagSetting { |
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157 intx val; |
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158 intx* flag; |
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159 public: |
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160 IntFlagSetting(intx& fl, intx newValue) { flag = &fl; val = fl; fl = newValue; } |
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161 ~IntFlagSetting() { *flag = val; } |
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162 }; |
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163 |
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164 |
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165 class DoubleFlagSetting { |
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166 double val; |
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167 double* flag; |
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168 public: |
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169 DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; } |
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170 ~DoubleFlagSetting() { *flag = val; } |
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171 }; |
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172 |
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173 |
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174 class CommandLineFlags { |
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175 public: |
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176 static bool boolAt(char* name, size_t len, bool* value); |
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177 static bool boolAt(char* name, bool* value) { return boolAt(name, strlen(name), value); } |
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178 static bool boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin); |
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179 static bool boolAtPut(char* name, bool* value, FlagValueOrigin origin) { return boolAtPut(name, strlen(name), value, origin); } |
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180 |
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181 static bool intxAt(char* name, size_t len, intx* value); |
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182 static bool intxAt(char* name, intx* value) { return intxAt(name, strlen(name), value); } |
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183 static bool intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin); |
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184 static bool intxAtPut(char* name, intx* value, FlagValueOrigin origin) { return intxAtPut(name, strlen(name), value, origin); } |
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185 |
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186 static bool uintxAt(char* name, size_t len, uintx* value); |
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187 static bool uintxAt(char* name, uintx* value) { return uintxAt(name, strlen(name), value); } |
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188 static bool uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin); |
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189 static bool uintxAtPut(char* name, uintx* value, FlagValueOrigin origin) { return uintxAtPut(name, strlen(name), value, origin); } |
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190 |
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191 static bool doubleAt(char* name, size_t len, double* value); |
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192 static bool doubleAt(char* name, double* value) { return doubleAt(name, strlen(name), value); } |
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193 static bool doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin); |
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194 static bool doubleAtPut(char* name, double* value, FlagValueOrigin origin) { return doubleAtPut(name, strlen(name), value, origin); } |
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195 |
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196 static bool ccstrAt(char* name, size_t len, ccstr* value); |
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197 static bool ccstrAt(char* name, ccstr* value) { return ccstrAt(name, strlen(name), value); } |
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198 static bool ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin); |
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199 static bool ccstrAtPut(char* name, ccstr* value, FlagValueOrigin origin) { return ccstrAtPut(name, strlen(name), value, origin); } |
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200 |
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201 // Returns false if name is not a command line flag. |
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202 static bool wasSetOnCmdline(const char* name, bool* value); |
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203 static void printSetFlags(); |
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204 |
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205 static void printFlags() PRODUCT_RETURN; |
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206 |
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207 static void verify() PRODUCT_RETURN; |
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208 }; |
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209 |
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210 // use this for flags that are true by default in the debug version but |
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211 // false in the optimized version, and vice versa |
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212 #ifdef ASSERT |
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213 #define trueInDebug true |
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214 #define falseInDebug false |
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215 #else |
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216 #define trueInDebug false |
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217 #define falseInDebug true |
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218 #endif |
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219 |
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220 // use this for flags that are true per default in the product build |
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221 // but false in development builds, and vice versa |
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222 #ifdef PRODUCT |
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223 #define trueInProduct true |
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224 #define falseInProduct false |
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225 #else |
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226 #define trueInProduct false |
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227 #define falseInProduct true |
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228 #endif |
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229 |
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230 // use this for flags that are true per default in the tiered build |
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231 // but false in non-tiered builds, and vice versa |
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232 #ifdef TIERED |
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233 #define trueInTiered true |
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234 #define falseInTiered false |
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235 #else |
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236 #define trueInTiered false |
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237 #define falseInTiered true |
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238 #endif |
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239 |
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240 |
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241 // develop flags are settable / visible only during development and are constant in the PRODUCT version |
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242 // product flags are always settable / visible |
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243 // notproduct flags are settable / visible only during development and are not declared in the PRODUCT version |
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244 |
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245 // A flag must be declared with one of the following types: |
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246 // bool, intx, uintx, ccstr. |
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247 // The type "ccstr" is an alias for "const char*" and is used |
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248 // only in this file, because the macrology requires single-token type names. |
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249 |
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250 // Note: Diagnostic options not meant for VM tuning or for product modes. |
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251 // They are to be used for VM quality assurance or field diagnosis |
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252 // of VM bugs. They are hidden so that users will not be encouraged to |
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253 // try them as if they were VM ordinary execution options. However, they |
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254 // are available in the product version of the VM. Under instruction |
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255 // from support engineers, VM customers can turn them on to collect |
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256 // diagnostic information about VM problems. To use a VM diagnostic |
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257 // option, you must first specify +UnlockDiagnosticVMOptions. |
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258 // (This master switch also affects the behavior of -Xprintflags.) |
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259 |
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260 // manageable flags are writeable external product flags. |
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261 // They are dynamically writeable through the JDK management interface |
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262 // (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole. |
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263 // These flags are external exported interface (see CCC). The list of |
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264 // manageable flags can be queried programmatically through the management |
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265 // interface. |
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266 // |
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267 // A flag can be made as "manageable" only if |
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268 // - the flag is defined in a CCC as an external exported interface. |
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269 // - the VM implementation supports dynamic setting of the flag. |
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270 // This implies that the VM must *always* query the flag variable |
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271 // and not reuse state related to the flag state at any given time. |
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272 // - you want the flag to be queried programmatically by the customers. |
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273 // |
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274 // product_rw flags are writeable internal product flags. |
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275 // They are like "manageable" flags but for internal/private use. |
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276 // The list of product_rw flags are internal/private flags which |
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277 // may be changed/removed in a future release. It can be set |
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278 // through the management interface to get/set value |
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279 // when the name of flag is supplied. |
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280 // |
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281 // A flag can be made as "product_rw" only if |
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282 // - the VM implementation supports dynamic setting of the flag. |
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283 // This implies that the VM must *always* query the flag variable |
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284 // and not reuse state related to the flag state at any given time. |
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285 // |
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286 // Note that when there is a need to support develop flags to be writeable, |
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287 // it can be done in the same way as product_rw. |
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288 |
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289 #define RUNTIME_FLAGS(develop, develop_pd, product, product_pd, diagnostic, notproduct, manageable, product_rw) \ |
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290 \ |
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291 /* UseMembar is theoretically a temp flag used for memory barrier \ |
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292 * removal testing. It was supposed to be removed before FCS but has \ |
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293 * been re-added (see 6401008) */ \ |
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294 product(bool, UseMembar, false, \ |
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295 "(Unstable) Issues membars on thread state transitions") \ |
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296 \ |
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297 product(bool, PrintCommandLineFlags, false, \ |
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298 "Prints flags that appeared on the command line") \ |
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299 \ |
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300 diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \ |
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301 "Enable processing of flags relating to field diagnostics") \ |
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302 \ |
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303 product(bool, JavaMonitorsInStackTrace, true, \ |
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304 "Print info. about Java monitor locks when the stacks are dumped")\ |
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305 \ |
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306 product_pd(bool, UseLargePages, \ |
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307 "Use large page memory") \ |
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308 \ |
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309 develop(bool, TracePageSizes, false, \ |
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310 "Trace page size selection and usage.") \ |
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311 \ |
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312 product(bool, UseNUMA, false, \ |
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313 "Use NUMA if available") \ |
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314 \ |
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315 product(intx, NUMAChunkResizeWeight, 20, \ |
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316 "Percentage (0-100) used to weight the current sample when " \ |
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317 "computing exponentially decaying average for " \ |
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318 "AdaptiveNUMAChunkSizing") \ |
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319 \ |
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320 product(intx, NUMASpaceResizeRate, 1*G, \ |
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321 "Do not reallocate more that this amount per collection") \ |
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322 \ |
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323 product(bool, UseAdaptiveNUMAChunkSizing, true, \ |
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324 "Enable adaptive chunk sizing for NUMA") \ |
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325 \ |
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326 product(bool, NUMAStats, false, \ |
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327 "Print NUMA stats in detailed heap information") \ |
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328 \ |
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329 product(intx, NUMAPageScanRate, 256, \ |
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330 "Maximum number of pages to include in the page scan procedure") \ |
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331 \ |
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332 product_pd(bool, NeedsDeoptSuspend, \ |
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333 "True for register window machines (sparc/ia64)") \ |
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334 \ |
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335 product(intx, UseSSE, 99, \ |
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336 "Highest supported SSE instructions set on x86/x64") \ |
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337 \ |
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338 product(uintx, LargePageSizeInBytes, 0, \ |
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339 "Large page size (0 to let VM choose the page size") \ |
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340 \ |
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341 product(uintx, LargePageHeapSizeThreshold, 128*M, \ |
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342 "Use large pages if max heap is at least this big") \ |
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343 \ |
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344 product(bool, ForceTimeHighResolution, false, \ |
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345 "Using high time resolution(For Win32 only)") \ |
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346 \ |
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347 product(bool, CacheTimeMillis, false, \ |
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348 "Cache os::javaTimeMillis with CacheTimeMillisGranularity") \ |
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349 \ |
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350 diagnostic(uintx, CacheTimeMillisGranularity, 50, \ |
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351 "Granularity for CacheTimeMillis") \ |
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352 \ |
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353 develop(bool, TraceItables, false, \ |
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354 "Trace initialization and use of itables") \ |
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355 \ |
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356 develop(bool, TracePcPatching, false, \ |
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357 "Trace usage of frame::patch_pc") \ |
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358 \ |
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359 develop(bool, TraceJumps, false, \ |
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360 "Trace assembly jumps in thread ring buffer") \ |
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361 \ |
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362 develop(bool, TraceRelocator, false, \ |
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363 "Trace the bytecode relocator") \ |
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364 \ |
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365 develop(bool, TraceLongCompiles, false, \ |
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366 "Print out every time compilation is longer than " \ |
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367 "a given threashold") \ |
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368 \ |
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369 develop(bool, SafepointALot, false, \ |
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370 "Generates a lot of safepoints. Works with " \ |
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371 "GuaranteedSafepointInterval") \ |
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372 \ |
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373 product_pd(bool, BackgroundCompilation, \ |
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374 "A thread requesting compilation is not blocked during " \ |
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375 "compilation") \ |
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376 \ |
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377 product(bool, PrintVMQWaitTime, false, \ |
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378 "Prints out the waiting time in VM operation queue") \ |
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379 \ |
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380 develop(bool, BailoutToInterpreterForThrows, false, \ |
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381 "Compiled methods which throws/catches exceptions will be " \ |
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382 "deopt and intp.") \ |
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383 \ |
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384 develop(bool, NoYieldsInMicrolock, false, \ |
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385 "Disable yields in microlock") \ |
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386 \ |
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387 develop(bool, TraceOopMapGeneration, false, \ |
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388 "Shows oopmap generation") \ |
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389 \ |
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390 product(bool, MethodFlushing, true, \ |
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391 "Reclamation of zombie and not-entrant methods") \ |
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392 \ |
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393 develop(bool, VerifyStack, false, \ |
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394 "Verify stack of each thread when it is entering a runtime call") \ |
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395 \ |
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396 develop(bool, ForceUnreachable, false, \ |
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397 "(amd64) Make all non code cache addresses to be unreachable with rip-rel forcing use of 64bit literal fixups") \ |
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398 \ |
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399 notproduct(bool, StressDerivedPointers, false, \ |
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400 "Force scavenge when a derived pointers is detected on stack " \ |
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401 "after rtm call") \ |
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402 \ |
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403 develop(bool, TraceDerivedPointers, false, \ |
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404 "Trace traversal of derived pointers on stack") \ |
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405 \ |
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406 notproduct(bool, TraceCodeBlobStacks, false, \ |
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407 "Trace stack-walk of codeblobs") \ |
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408 \ |
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409 product(bool, PrintJNIResolving, false, \ |
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410 "Used to implement -v:jni") \ |
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411 \ |
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412 notproduct(bool, PrintRewrites, false, \ |
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413 "Print methods that are being rewritten") \ |
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414 \ |
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415 product(bool, UseInlineCaches, true, \ |
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416 "Use Inline Caches for virtual calls ") \ |
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417 \ |
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418 develop(bool, InlineArrayCopy, true, \ |
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419 "inline arraycopy native that is known to be part of " \ |
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420 "base library DLL") \ |
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421 \ |
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422 develop(bool, InlineObjectHash, true, \ |
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423 "inline Object::hashCode() native that is known to be part " \ |
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424 "of base library DLL") \ |
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425 \ |
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426 develop(bool, InlineObjectCopy, true, \ |
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427 "inline Object.clone and Arrays.copyOf[Range] intrinsics") \ |
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428 \ |
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429 develop(bool, InlineNatives, true, \ |
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430 "inline natives that are known to be part of base library DLL") \ |
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431 \ |
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432 develop(bool, InlineMathNatives, true, \ |
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433 "inline SinD, CosD, etc.") \ |
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434 \ |
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435 develop(bool, InlineClassNatives, true, \ |
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436 "inline Class.isInstance, etc") \ |
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437 \ |
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438 develop(bool, InlineAtomicLong, true, \ |
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439 "inline sun.misc.AtomicLong") \ |
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440 \ |
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441 develop(bool, InlineThreadNatives, true, \ |
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442 "inline Thread.currentThread, etc") \ |
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443 \ |
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444 develop(bool, InlineReflectionGetCallerClass, true, \ |
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445 "inline sun.reflect.Reflection.getCallerClass(), known to be part "\ |
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446 "of base library DLL") \ |
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447 \ |
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448 develop(bool, InlineUnsafeOps, true, \ |
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449 "inline memory ops (native methods) from sun.misc.Unsafe") \ |
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450 \ |
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451 develop(bool, ConvertCmpD2CmpF, true, \ |
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452 "Convert cmpD to cmpF when one input is constant in float range") \ |
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453 \ |
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454 develop(bool, ConvertFloat2IntClipping, true, \ |
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455 "Convert float2int clipping idiom to integer clipping") \ |
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456 \ |
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457 develop(bool, SpecialStringCompareTo, true, \ |
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458 "special version of string compareTo") \ |
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459 \ |
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460 develop(bool, SpecialStringIndexOf, true, \ |
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461 "special version of string indexOf") \ |
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462 \ |
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463 develop(bool, TraceCallFixup, false, \ |
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464 "traces all call fixups") \ |
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465 \ |
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466 develop(bool, DeoptimizeALot, false, \ |
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467 "deoptimize at every exit from the runtime system") \ |
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468 \ |
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469 develop(ccstrlist, DeoptimizeOnlyAt, "", \ |
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470 "a comma separated list of bcis to deoptimize at") \ |
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471 \ |
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472 product(bool, DeoptimizeRandom, false, \ |
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473 "deoptimize random frames on random exit from the runtime system")\ |
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474 \ |
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475 notproduct(bool, ZombieALot, false, \ |
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476 "creates zombies (non-entrant) at exit from the runt. system") \ |
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477 \ |
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478 notproduct(bool, WalkStackALot, false, \ |
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479 "trace stack (no print) at every exit from the runtime system") \ |
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480 \ |
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481 develop(bool, Debugging, false, \ |
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482 "set when executing debug methods in debug.ccp " \ |
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483 "(to prevent triggering assertions)") \ |
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484 \ |
|
485 notproduct(bool, StrictSafepointChecks, trueInDebug, \ |
|
486 "Enable strict checks that safepoints cannot happen for threads " \ |
|
487 "that used No_Safepoint_Verifier") \ |
|
488 \ |
|
489 notproduct(bool, VerifyLastFrame, false, \ |
|
490 "Verify oops on last frame on entry to VM") \ |
|
491 \ |
|
492 develop(bool, TraceHandleAllocation, false, \ |
|
493 "Prints out warnings when suspicious many handles are allocated") \ |
|
494 \ |
|
495 product(bool, UseCompilerSafepoints, true, \ |
|
496 "Stop at safepoints in compiled code") \ |
|
497 \ |
|
498 product(bool, UseSplitVerifier, true, \ |
|
499 "use split verifier with StackMapTable attributes") \ |
|
500 \ |
|
501 product(bool, FailOverToOldVerifier, true, \ |
|
502 "fail over to old verifier when split verifier fails") \ |
|
503 \ |
|
504 develop(bool, ShowSafepointMsgs, false, \ |
|
505 "Show msg. about safepoint synch.") \ |
|
506 \ |
|
507 product(bool, SafepointTimeout, false, \ |
|
508 "Time out and warn or fail after SafepointTimeoutDelay " \ |
|
509 "milliseconds if failed to reach safepoint") \ |
|
510 \ |
|
511 develop(bool, DieOnSafepointTimeout, false, \ |
|
512 "Die upon failure to reach safepoint (see SafepointTimeout)") \ |
|
513 \ |
|
514 /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \ |
|
515 /* typically, at most a few retries are needed */ \ |
|
516 product(intx, SuspendRetryCount, 50, \ |
|
517 "Maximum retry count for an external suspend request") \ |
|
518 \ |
|
519 product(intx, SuspendRetryDelay, 5, \ |
|
520 "Milliseconds to delay per retry (* current_retry_count)") \ |
|
521 \ |
|
522 product(bool, AssertOnSuspendWaitFailure, false, \ |
|
523 "Assert/Guarantee on external suspend wait failure") \ |
|
524 \ |
|
525 product(bool, TraceSuspendWaitFailures, false, \ |
|
526 "Trace external suspend wait failures") \ |
|
527 \ |
|
528 product(bool, MaxFDLimit, true, \ |
|
529 "Bump the number of file descriptors to max in solaris.") \ |
|
530 \ |
|
531 notproduct(bool, LogEvents, trueInDebug, \ |
|
532 "Enable Event log") \ |
|
533 \ |
|
534 product(bool, BytecodeVerificationRemote, true, \ |
|
535 "Enables the Java bytecode verifier for remote classes") \ |
|
536 \ |
|
537 product(bool, BytecodeVerificationLocal, false, \ |
|
538 "Enables the Java bytecode verifier for local classes") \ |
|
539 \ |
|
540 develop(bool, ForceFloatExceptions, trueInDebug, \ |
|
541 "Force exceptions on FP stack under/overflow") \ |
|
542 \ |
|
543 develop(bool, SoftMatchFailure, trueInProduct, \ |
|
544 "If the DFA fails to match a node, print a message and bail out") \ |
|
545 \ |
|
546 develop(bool, VerifyStackAtCalls, false, \ |
|
547 "Verify that the stack pointer is unchanged after calls") \ |
|
548 \ |
|
549 develop(bool, TraceJavaAssertions, false, \ |
|
550 "Trace java language assertions") \ |
|
551 \ |
|
552 notproduct(bool, CheckAssertionStatusDirectives, false, \ |
|
553 "temporary - see javaClasses.cpp") \ |
|
554 \ |
|
555 notproduct(bool, PrintMallocFree, false, \ |
|
556 "Trace calls to C heap malloc/free allocation") \ |
|
557 \ |
|
558 notproduct(bool, PrintOopAddress, false, \ |
|
559 "Always print the location of the oop") \ |
|
560 \ |
|
561 notproduct(bool, VerifyCodeCacheOften, false, \ |
|
562 "Verify compiled-code cache often") \ |
|
563 \ |
|
564 develop(bool, ZapDeadCompiledLocals, false, \ |
|
565 "Zap dead locals in compiler frames") \ |
|
566 \ |
|
567 notproduct(bool, ZapDeadLocalsOld, false, \ |
|
568 "Zap dead locals (old version, zaps all frames when " \ |
|
569 "entering the VM") \ |
|
570 \ |
|
571 notproduct(bool, CheckOopishValues, false, \ |
|
572 "Warn if value contains oop ( requires ZapDeadLocals)") \ |
|
573 \ |
|
574 develop(bool, UseMallocOnly, false, \ |
|
575 "use only malloc/free for allocation (no resource area/arena)") \ |
|
576 \ |
|
577 develop(bool, PrintMalloc, false, \ |
|
578 "print all malloc/free calls") \ |
|
579 \ |
|
580 develop(bool, ZapResourceArea, trueInDebug, \ |
|
581 "Zap freed resource/arena space with 0xABABABAB") \ |
|
582 \ |
|
583 notproduct(bool, ZapVMHandleArea, trueInDebug, \ |
|
584 "Zap freed VM handle space with 0xBCBCBCBC") \ |
|
585 \ |
|
586 develop(bool, ZapJNIHandleArea, trueInDebug, \ |
|
587 "Zap freed JNI handle space with 0xFEFEFEFE") \ |
|
588 \ |
|
589 develop(bool, ZapUnusedHeapArea, trueInDebug, \ |
|
590 "Zap unused heap space with 0xBAADBABE") \ |
|
591 \ |
|
592 develop(bool, PrintVMMessages, true, \ |
|
593 "Print vm messages on console") \ |
|
594 \ |
|
595 product(bool, PrintGCApplicationConcurrentTime, false, \ |
|
596 "Print the time the application has been running") \ |
|
597 \ |
|
598 product(bool, PrintGCApplicationStoppedTime, false, \ |
|
599 "Print the time the application has been stopped") \ |
|
600 \ |
|
601 develop(bool, Verbose, false, \ |
|
602 "Prints additional debugging information from other modes") \ |
|
603 \ |
|
604 develop(bool, PrintMiscellaneous, false, \ |
|
605 "Prints uncategorized debugging information (requires +Verbose)") \ |
|
606 \ |
|
607 develop(bool, WizardMode, false, \ |
|
608 "Prints much more debugging information") \ |
|
609 \ |
|
610 product(bool, ShowMessageBoxOnError, false, \ |
|
611 "Keep process alive on VM fatal error") \ |
|
612 \ |
|
613 product_pd(bool, UseOSErrorReporting, \ |
|
614 "Let VM fatal error propagate to the OS (ie. WER on Windows)") \ |
|
615 \ |
|
616 product(bool, SuppressFatalErrorMessage, false, \ |
|
617 "Do NO Fatal Error report [Avoid deadlock]") \ |
|
618 \ |
|
619 product(ccstrlist, OnError, "", \ |
|
620 "Run user-defined commands on fatal error; see VMError.cpp " \ |
|
621 "for examples") \ |
|
622 \ |
|
623 product(ccstrlist, OnOutOfMemoryError, "", \ |
|
624 "Run user-defined commands on first java.lang.OutOfMemoryError") \ |
|
625 \ |
|
626 manageable(bool, HeapDumpOnOutOfMemoryError, false, \ |
|
627 "Dump heap to file when java.lang.OutOfMemoryError is thrown") \ |
|
628 \ |
|
629 manageable(ccstr, HeapDumpPath, NULL, \ |
|
630 "When HeapDumpOnOutOfMemoryError is on, the path (filename or" \ |
|
631 "directory) of the dump file (defaults to java_pid<pid>.hprof" \ |
|
632 "in the working directory)") \ |
|
633 \ |
|
634 develop(uintx, SegmentedHeapDumpThreshold, 2*G, \ |
|
635 "Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) " \ |
|
636 "when the heap usage is larger than this") \ |
|
637 \ |
|
638 develop(uintx, HeapDumpSegmentSize, 1*G, \ |
|
639 "Approximate segment size when generating a segmented heap dump") \ |
|
640 \ |
|
641 develop(bool, BreakAtWarning, false, \ |
|
642 "Execute breakpoint upon encountering VM warning") \ |
|
643 \ |
|
644 product_pd(bool, UseVectoredExceptions, \ |
|
645 "Temp Flag - Use Vectored Exceptions rather than SEH (Windows Only)") \ |
|
646 \ |
|
647 develop(bool, TraceVMOperation, false, \ |
|
648 "Trace vm operations") \ |
|
649 \ |
|
650 develop(bool, UseFakeTimers, false, \ |
|
651 "Tells whether the VM should use system time or a fake timer") \ |
|
652 \ |
|
653 diagnostic(bool, LogCompilation, false, \ |
|
654 "Log compilation activity in detail to hotspot.log or LogFile") \ |
|
655 \ |
|
656 product(bool, PrintCompilation, false, \ |
|
657 "Print compilations") \ |
|
658 \ |
|
659 diagnostic(bool, TraceNMethodInstalls, false, \ |
|
660 "Trace nmethod intallation") \ |
|
661 \ |
|
662 diagnostic(bool, TraceOSRBreakpoint, false, \ |
|
663 "Trace OSR Breakpoint ") \ |
|
664 \ |
|
665 diagnostic(bool, TraceCompileTriggered, false, \ |
|
666 "Trace compile triggered") \ |
|
667 \ |
|
668 diagnostic(bool, TraceTriggers, false, \ |
|
669 "Trace triggers") \ |
|
670 \ |
|
671 product(bool, AlwaysRestoreFPU, false, \ |
|
672 "Restore the FPU control word after every JNI call (expensive)") \ |
|
673 \ |
|
674 notproduct(bool, PrintCompilation2, false, \ |
|
675 "Print additional statistics per compilation") \ |
|
676 \ |
|
677 notproduct(bool, PrintAdapterHandlers, false, \ |
|
678 "Print code generated for i2c/c2i adapters") \ |
|
679 \ |
|
680 develop(bool, PrintAssembly, false, \ |
|
681 "Print assembly code") \ |
|
682 \ |
|
683 develop(bool, PrintNMethods, false, \ |
|
684 "Print assembly code for nmethods when generated") \ |
|
685 \ |
|
686 develop(bool, PrintNativeNMethods, false, \ |
|
687 "Print assembly code for native nmethods when generated") \ |
|
688 \ |
|
689 develop(bool, PrintDebugInfo, false, \ |
|
690 "Print debug information for all nmethods when generated") \ |
|
691 \ |
|
692 develop(bool, PrintRelocations, false, \ |
|
693 "Print relocation information for all nmethods when generated") \ |
|
694 \ |
|
695 develop(bool, PrintDependencies, false, \ |
|
696 "Print dependency information for all nmethods when generated") \ |
|
697 \ |
|
698 develop(bool, PrintExceptionHandlers, false, \ |
|
699 "Print exception handler tables for all nmethods when generated") \ |
|
700 \ |
|
701 develop(bool, InterceptOSException, false, \ |
|
702 "Starts debugger when an implicit OS (e.g., NULL) " \ |
|
703 "exception happens") \ |
|
704 \ |
|
705 notproduct(bool, PrintCodeCache, false, \ |
|
706 "Print the compiled_code cache when exiting") \ |
|
707 \ |
|
708 develop(bool, PrintCodeCache2, false, \ |
|
709 "Print detailed info on the compiled_code cache when exiting") \ |
|
710 \ |
|
711 develop(bool, PrintStubCode, false, \ |
|
712 "Print generated stub code") \ |
|
713 \ |
|
714 product(bool, StackTraceInThrowable, true, \ |
|
715 "Collect backtrace in throwable when exception happens") \ |
|
716 \ |
|
717 product(bool, OmitStackTraceInFastThrow, true, \ |
|
718 "Omit backtraces for some 'hot' exceptions in optimized code") \ |
|
719 \ |
|
720 product(bool, ProfilerPrintByteCodeStatistics, false, \ |
|
721 "Prints byte code statictics when dumping profiler output") \ |
|
722 \ |
|
723 product(bool, ProfilerRecordPC, false, \ |
|
724 "Collects tick for each 16 byte interval of compiled code") \ |
|
725 \ |
|
726 product(bool, ProfileVM, false, \ |
|
727 "Profiles ticks that fall within VM (either in the VM Thread " \ |
|
728 "or VM code called through stubs)") \ |
|
729 \ |
|
730 product(bool, ProfileIntervals, false, \ |
|
731 "Prints profiles for each interval (see ProfileIntervalsTicks)") \ |
|
732 \ |
|
733 notproduct(bool, ProfilerCheckIntervals, false, \ |
|
734 "Collect and print info on spacing of profiler ticks") \ |
|
735 \ |
|
736 develop(bool, PrintJVMWarnings, false, \ |
|
737 "Prints warnings for unimplemented JVM functions") \ |
|
738 \ |
|
739 notproduct(uintx, WarnOnStalledSpinLock, 0, \ |
|
740 "Prints warnings for stalled SpinLocks") \ |
|
741 \ |
|
742 develop(bool, InitializeJavaLangSystem, true, \ |
|
743 "Initialize java.lang.System - turn off for individual " \ |
|
744 "method debugging") \ |
|
745 \ |
|
746 develop(bool, InitializeJavaLangString, true, \ |
|
747 "Initialize java.lang.String - turn off for individual " \ |
|
748 "method debugging") \ |
|
749 \ |
|
750 develop(bool, InitializeJavaLangExceptionsErrors, true, \ |
|
751 "Initialize various error and exception classes - turn off for " \ |
|
752 "individual method debugging") \ |
|
753 \ |
|
754 product(bool, RegisterFinalizersAtInit, true, \ |
|
755 "Register finalizable objects at end of Object.<init> or " \ |
|
756 "after allocation.") \ |
|
757 \ |
|
758 develop(bool, RegisterReferences, true, \ |
|
759 "Tells whether the VM should register soft/weak/final/phantom " \ |
|
760 "references") \ |
|
761 \ |
|
762 develop(bool, IgnoreRewrites, false, \ |
|
763 "Supress rewrites of bytecodes in the oopmap generator. " \ |
|
764 "This is unsafe!") \ |
|
765 \ |
|
766 develop(bool, PrintCodeCacheExtension, false, \ |
|
767 "Print extension of code cache") \ |
|
768 \ |
|
769 develop(bool, UsePrivilegedStack, true, \ |
|
770 "Enable the security JVM functions") \ |
|
771 \ |
|
772 develop(bool, IEEEPrecision, true, \ |
|
773 "Enables IEEE precision (for INTEL only)") \ |
|
774 \ |
|
775 develop(bool, ProtectionDomainVerification, true, \ |
|
776 "Verifies protection domain before resolution in system " \ |
|
777 "dictionary") \ |
|
778 \ |
|
779 product(bool, ClassUnloading, true, \ |
|
780 "Do unloading of classes") \ |
|
781 \ |
|
782 develop(bool, DisableStartThread, false, \ |
|
783 "Disable starting of additional Java threads " \ |
|
784 "(for debugging only)") \ |
|
785 \ |
|
786 develop(bool, MemProfiling, false, \ |
|
787 "Write memory usage profiling to log file") \ |
|
788 \ |
|
789 notproduct(bool, PrintSystemDictionaryAtExit, false, \ |
|
790 "Prints the system dictionary at exit") \ |
|
791 \ |
|
792 diagnostic(bool, UnsyncloadClass, false, \ |
|
793 "Unstable: VM calls loadClass unsynchronized. Custom classloader "\ |
|
794 "must call VM synchronized for findClass & defineClass") \ |
|
795 \ |
|
796 product_pd(bool, DontYieldALot, \ |
|
797 "Throw away obvious excess yield calls (for SOLARIS only)") \ |
|
798 \ |
|
799 product_pd(bool, ConvertSleepToYield, \ |
|
800 "Converts sleep(0) to thread yield " \ |
|
801 "(may be off for SOLARIS to improve GUI)") \ |
|
802 \ |
|
803 product(bool, ConvertYieldToSleep, false, \ |
|
804 "Converts yield to a sleep of MinSleepInterval to simulate Win32 "\ |
|
805 "behavior (SOLARIS only)") \ |
|
806 \ |
|
807 product(bool, UseBoundThreads, true, \ |
|
808 "Bind user level threads to kernel threads (for SOLARIS only)") \ |
|
809 \ |
|
810 develop(bool, UseDetachedThreads, true, \ |
|
811 "Use detached threads that are recycled upon termination " \ |
|
812 "(for SOLARIS only)") \ |
|
813 \ |
|
814 product(bool, UseLWPSynchronization, true, \ |
|
815 "Use LWP-based instead of libthread-based synchronization " \ |
|
816 "(SPARC only)") \ |
|
817 \ |
|
818 product(ccstr, SyncKnobs, "", \ |
|
819 "(Unstable) Various monitor synchronization tunables") \ |
|
820 \ |
|
821 product(intx, EmitSync, 0, \ |
|
822 "(Unsafe,Unstable) " \ |
|
823 " Controls emission of inline sync fast-path code") \ |
|
824 \ |
|
825 product(intx, AlwaysInflate, 0, "(Unstable) Force inflation") \ |
|
826 \ |
|
827 product(intx, Atomics, 0, \ |
|
828 "(Unsafe,Unstable) Diagnostic - Controls emission of atomics") \ |
|
829 \ |
|
830 product(intx, FenceInstruction, 0, \ |
|
831 "(Unsafe,Unstable) Experimental") \ |
|
832 \ |
|
833 product(intx, SyncFlags, 0, "(Unsafe,Unstable) Experimental Sync flags" ) \ |
|
834 \ |
|
835 product(intx, SyncVerbose, 0, "(Unstable)" ) \ |
|
836 \ |
|
837 product(intx, ClearFPUAtPark, 0, "(Unsafe,Unstable)" ) \ |
|
838 \ |
|
839 product(intx, hashCode, 0, \ |
|
840 "(Unstable) select hashCode generation algorithm" ) \ |
|
841 \ |
|
842 product(intx, WorkAroundNPTLTimedWaitHang, 1, \ |
|
843 "(Unstable, Linux-specific)" \ |
|
844 " avoid NPTL-FUTEX hang pthread_cond_timedwait" ) \ |
|
845 \ |
|
846 product(bool, FilterSpuriousWakeups , true, \ |
|
847 "Prevent spurious or premature wakeups from object.wait" \ |
|
848 "(Solaris only)") \ |
|
849 \ |
|
850 product(intx, NativeMonitorTimeout, -1, "(Unstable)" ) \ |
|
851 product(intx, NativeMonitorFlags, 0, "(Unstable)" ) \ |
|
852 product(intx, NativeMonitorSpinLimit, 20, "(Unstable)" ) \ |
|
853 \ |
|
854 develop(bool, UsePthreads, false, \ |
|
855 "Use pthread-based instead of libthread-based synchronization " \ |
|
856 "(SPARC only)") \ |
|
857 \ |
|
858 product(bool, AdjustConcurrency, false, \ |
|
859 "call thr_setconcurrency at thread create time to avoid " \ |
|
860 "LWP starvation on MP systems (For Solaris Only)") \ |
|
861 \ |
|
862 develop(bool, UpdateHotSpotCompilerFileOnError, true, \ |
|
863 "Should the system attempt to update the compiler file when " \ |
|
864 "an error occurs?") \ |
|
865 \ |
|
866 product(bool, ReduceSignalUsage, false, \ |
|
867 "Reduce the use of OS signals in Java and/or the VM") \ |
|
868 \ |
|
869 notproduct(bool, ValidateMarkSweep, false, \ |
|
870 "Do extra validation during MarkSweep collection") \ |
|
871 \ |
|
872 notproduct(bool, RecordMarkSweepCompaction, false, \ |
|
873 "Enable GC-to-GC recording and querying of compaction during " \ |
|
874 "MarkSweep") \ |
|
875 \ |
|
876 develop_pd(bool, ShareVtableStubs, \ |
|
877 "Share vtable stubs (smaller code but worse branch prediction") \ |
|
878 \ |
|
879 develop(bool, LoadLineNumberTables, true, \ |
|
880 "Tells whether the class file parser loads line number tables") \ |
|
881 \ |
|
882 develop(bool, LoadLocalVariableTables, true, \ |
|
883 "Tells whether the class file parser loads local variable tables")\ |
|
884 \ |
|
885 develop(bool, LoadLocalVariableTypeTables, true, \ |
|
886 "Tells whether the class file parser loads local variable type tables")\ |
|
887 \ |
|
888 product(bool, AllowUserSignalHandlers, false, \ |
|
889 "Do not complain if the application installs signal handlers " \ |
|
890 "(Solaris & Linux only)") \ |
|
891 \ |
|
892 product(bool, UseSignalChaining, true, \ |
|
893 "Use signal-chaining to invoke signal handlers installed " \ |
|
894 "by the application (Solaris & Linux only)") \ |
|
895 \ |
|
896 product(bool, UseAltSigs, false, \ |
|
897 "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \ |
|
898 "internal signals. (Solaris only)") \ |
|
899 \ |
|
900 product(bool, UseSpinning, false, \ |
|
901 "Use spinning in monitor inflation and before entry") \ |
|
902 \ |
|
903 product(bool, PreSpinYield, false, \ |
|
904 "Yield before inner spinning loop") \ |
|
905 \ |
|
906 product(bool, PostSpinYield, true, \ |
|
907 "Yield after inner spinning loop") \ |
|
908 \ |
|
909 product(bool, AllowJNIEnvProxy, false, \ |
|
910 "Allow JNIEnv proxies for jdbx") \ |
|
911 \ |
|
912 product(bool, JNIDetachReleasesMonitors, true, \ |
|
913 "JNI DetachCurrentThread releases monitors owned by thread") \ |
|
914 \ |
|
915 product(bool, RestoreMXCSROnJNICalls, false, \ |
|
916 "Restore MXCSR when returning from JNI calls") \ |
|
917 \ |
|
918 product(bool, CheckJNICalls, false, \ |
|
919 "Verify all arguments to JNI calls") \ |
|
920 \ |
|
921 product(bool, UseFastJNIAccessors, true, \ |
|
922 "Use optimized versions of Get<Primitive>Field") \ |
|
923 \ |
|
924 product(bool, EagerXrunInit, false, \ |
|
925 "Eagerly initialize -Xrun libraries; allows startup profiling, " \ |
|
926 " but not all -Xrun libraries may support the state of the VM at this time") \ |
|
927 \ |
|
928 product(bool, PreserveAllAnnotations, false, \ |
|
929 "Preserve RuntimeInvisibleAnnotations as well as RuntimeVisibleAnnotations") \ |
|
930 \ |
|
931 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \ |
|
932 "Number of OutOfMemoryErrors preallocated with backtrace") \ |
|
933 \ |
|
934 product(bool, LazyBootClassLoader, true, \ |
|
935 "Enable/disable lazy opening of boot class path entries") \ |
|
936 \ |
|
937 diagnostic(bool, UseIncDec, true, \ |
|
938 "Use INC, DEC instructions on x86") \ |
|
939 \ |
|
940 product(bool, UseStoreImmI16, true, \ |
|
941 "Use store immediate 16-bits value instruction on x86") \ |
|
942 \ |
|
943 product(bool, UseAddressNop, false, \ |
|
944 "Use '0F 1F [addr]' NOP instructions on x86 cpus") \ |
|
945 \ |
|
946 product(bool, UseXmmLoadAndClearUpper, true, \ |
|
947 "Load low part of XMM register and clear upper part") \ |
|
948 \ |
|
949 product(bool, UseXmmRegToRegMoveAll, false, \ |
|
950 "Copy all XMM register bits when moving value between registers") \ |
|
951 \ |
|
952 product(intx, FieldsAllocationStyle, 1, \ |
|
953 "0 - type based with oops first, 1 - with oops last") \ |
|
954 \ |
|
955 product(bool, CompactFields, true, \ |
|
956 "Allocate nonstatic fields in gaps between previous fields") \ |
|
957 \ |
|
958 notproduct(bool, PrintCompactFieldsSavings, false, \ |
|
959 "Print how many words were saved with CompactFields") \ |
|
960 \ |
|
961 product(bool, UseBiasedLocking, true, \ |
|
962 "Enable biased locking in JVM") \ |
|
963 \ |
|
964 product(intx, BiasedLockingStartupDelay, 4000, \ |
|
965 "Number of milliseconds to wait before enabling biased locking") \ |
|
966 \ |
|
967 diagnostic(bool, PrintBiasedLockingStatistics, false, \ |
|
968 "Print statistics of biased locking in JVM") \ |
|
969 \ |
|
970 product(intx, BiasedLockingBulkRebiasThreshold, 20, \ |
|
971 "Threshold of number of revocations per type to try to " \ |
|
972 "rebias all objects in the heap of that type") \ |
|
973 \ |
|
974 product(intx, BiasedLockingBulkRevokeThreshold, 40, \ |
|
975 "Threshold of number of revocations per type to permanently " \ |
|
976 "revoke biases of all objects in the heap of that type") \ |
|
977 \ |
|
978 product(intx, BiasedLockingDecayTime, 25000, \ |
|
979 "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \ |
|
980 "type after previous bulk rebias") \ |
|
981 \ |
|
982 /* tracing */ \ |
|
983 \ |
|
984 notproduct(bool, TraceRuntimeCalls, false, \ |
|
985 "Trace run-time calls") \ |
|
986 \ |
|
987 develop(bool, TraceJNICalls, false, \ |
|
988 "Trace JNI calls") \ |
|
989 \ |
|
990 notproduct(bool, TraceJVMCalls, false, \ |
|
991 "Trace JVM calls") \ |
|
992 \ |
|
993 product(ccstr, TraceJVMTI, "", \ |
|
994 "Trace flags for JVMTI functions and events") \ |
|
995 \ |
|
996 /* This option can change an EMCP method into an obsolete method. */ \ |
|
997 /* This can affect tests that except specific methods to be EMCP. */ \ |
|
998 /* This option should be used with caution. */ \ |
|
999 product(bool, StressLdcRewrite, false, \ |
|
1000 "Force ldc -> ldc_w rewrite during RedefineClasses") \ |
|
1001 \ |
|
1002 product(intx, TraceRedefineClasses, 0, \ |
|
1003 "Trace level for JVMTI RedefineClasses") \ |
|
1004 \ |
|
1005 /* change to false by default sometime after Mustang */ \ |
|
1006 product(bool, VerifyMergedCPBytecodes, true, \ |
|
1007 "Verify bytecodes after RedefineClasses constant pool merging") \ |
|
1008 \ |
|
1009 develop(bool, TraceJNIHandleAllocation, false, \ |
|
1010 "Trace allocation/deallocation of JNI handle blocks") \ |
|
1011 \ |
|
1012 develop(bool, TraceThreadEvents, false, \ |
|
1013 "Trace all thread events") \ |
|
1014 \ |
|
1015 develop(bool, TraceBytecodes, false, \ |
|
1016 "Trace bytecode execution") \ |
|
1017 \ |
|
1018 develop(bool, TraceClassInitialization, false, \ |
|
1019 "Trace class initialization") \ |
|
1020 \ |
|
1021 develop(bool, TraceExceptions, false, \ |
|
1022 "Trace exceptions") \ |
|
1023 \ |
|
1024 develop(bool, TraceICs, false, \ |
|
1025 "Trace inline cache changes") \ |
|
1026 \ |
|
1027 notproduct(bool, TraceInvocationCounterOverflow, false, \ |
|
1028 "Trace method invocation counter overflow") \ |
|
1029 \ |
|
1030 develop(bool, TraceInlineCacheClearing, false, \ |
|
1031 "Trace clearing of inline caches in nmethods") \ |
|
1032 \ |
|
1033 develop(bool, TraceDependencies, false, \ |
|
1034 "Trace dependencies") \ |
|
1035 \ |
|
1036 develop(bool, VerifyDependencies, trueInDebug, \ |
|
1037 "Exercise and verify the compilation dependency mechanism") \ |
|
1038 \ |
|
1039 develop(bool, TraceNewOopMapGeneration, false, \ |
|
1040 "Trace OopMapGeneration") \ |
|
1041 \ |
|
1042 develop(bool, TraceNewOopMapGenerationDetailed, false, \ |
|
1043 "Trace OopMapGeneration: print detailed cell states") \ |
|
1044 \ |
|
1045 develop(bool, TimeOopMap, false, \ |
|
1046 "Time calls to GenerateOopMap::compute_map() in sum") \ |
|
1047 \ |
|
1048 develop(bool, TimeOopMap2, false, \ |
|
1049 "Time calls to GenerateOopMap::compute_map() individually") \ |
|
1050 \ |
|
1051 develop(bool, TraceMonitorMismatch, false, \ |
|
1052 "Trace monitor matching failures during OopMapGeneration") \ |
|
1053 \ |
|
1054 develop(bool, TraceOopMapRewrites, false, \ |
|
1055 "Trace rewritting of method oops during oop map generation") \ |
|
1056 \ |
|
1057 develop(bool, TraceSafepoint, false, \ |
|
1058 "Trace safepoint operations") \ |
|
1059 \ |
|
1060 develop(bool, TraceICBuffer, false, \ |
|
1061 "Trace usage of IC buffer") \ |
|
1062 \ |
|
1063 develop(bool, TraceCompiledIC, false, \ |
|
1064 "Trace changes of compiled IC") \ |
|
1065 \ |
|
1066 notproduct(bool, TraceZapDeadLocals, false, \ |
|
1067 "Trace zapping dead locals") \ |
|
1068 \ |
|
1069 develop(bool, TraceStartupTime, false, \ |
|
1070 "Trace setup time") \ |
|
1071 \ |
|
1072 develop(bool, TraceHPI, false, \ |
|
1073 "Trace Host Porting Interface (HPI)") \ |
|
1074 \ |
|
1075 product(ccstr, HPILibPath, NULL, \ |
|
1076 "Specify alternate path to HPI library") \ |
|
1077 \ |
|
1078 develop(bool, TraceProtectionDomainVerification, false, \ |
|
1079 "Trace protection domain verifcation") \ |
|
1080 \ |
|
1081 develop(bool, TraceClearedExceptions, false, \ |
|
1082 "Prints when an exception is forcibly cleared") \ |
|
1083 \ |
|
1084 product(bool, TraceClassResolution, false, \ |
|
1085 "Trace all constant pool resolutions (for debugging)") \ |
|
1086 \ |
|
1087 product(bool, TraceBiasedLocking, false, \ |
|
1088 "Trace biased locking in JVM") \ |
|
1089 \ |
|
1090 product(bool, TraceMonitorInflation, false, \ |
|
1091 "Trace monitor inflation in JVM") \ |
|
1092 \ |
|
1093 /* assembler */ \ |
|
1094 product(bool, Use486InstrsOnly, false, \ |
|
1095 "Use 80486 Compliant instruction subset") \ |
|
1096 \ |
|
1097 /* gc */ \ |
|
1098 \ |
|
1099 product(bool, UseSerialGC, false, \ |
|
1100 "Tells whether the VM should use serial garbage collector") \ |
|
1101 \ |
|
1102 product(bool, UseParallelGC, false, \ |
|
1103 "Use the Parallel Scavenge garbage collector") \ |
|
1104 \ |
|
1105 product(bool, UseParallelOldGC, false, \ |
|
1106 "Use the Parallel Old garbage collector") \ |
|
1107 \ |
|
1108 product(bool, UseParallelOldGCCompacting, true, \ |
|
1109 "In the Parallel Old garbage collector use parallel compaction") \ |
|
1110 \ |
|
1111 product(bool, UseParallelDensePrefixUpdate, true, \ |
|
1112 "In the Parallel Old garbage collector use parallel dense" \ |
|
1113 " prefix update") \ |
|
1114 \ |
|
1115 develop(bool, UseParallelOldGCChunkPointerCalc, true, \ |
|
1116 "In the Parallel Old garbage collector use chucks to calculate" \ |
|
1117 " new object locations") \ |
|
1118 \ |
|
1119 product(uintx, HeapMaximumCompactionInterval, 20, \ |
|
1120 "How often should we maximally compact the heap (not allowing " \ |
|
1121 "any dead space)") \ |
|
1122 \ |
|
1123 product(uintx, HeapFirstMaximumCompactionCount, 3, \ |
|
1124 "The collection count for the first maximum compaction") \ |
|
1125 \ |
|
1126 product(bool, UseMaximumCompactionOnSystemGC, true, \ |
|
1127 "In the Parallel Old garbage collector maximum compaction for " \ |
|
1128 "a system GC") \ |
|
1129 \ |
|
1130 product(uintx, ParallelOldDeadWoodLimiterMean, 50, \ |
|
1131 "The mean used by the par compact dead wood" \ |
|
1132 "limiter (a number between 0-100).") \ |
|
1133 \ |
|
1134 product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \ |
|
1135 "The standard deviation used by the par compact dead wood" \ |
|
1136 "limiter (a number between 0-100).") \ |
|
1137 \ |
|
1138 product(bool, UseParallelOldGCDensePrefix, true, \ |
|
1139 "Use a dense prefix with the Parallel Old garbage collector") \ |
|
1140 \ |
|
1141 product(uintx, ParallelGCThreads, 0, \ |
|
1142 "Number of parallel threads parallel gc will use") \ |
|
1143 \ |
|
1144 product(uintx, ParallelCMSThreads, 0, \ |
|
1145 "Max number of threads CMS will use for concurrent work") \ |
|
1146 \ |
|
1147 develop(bool, VerifyParallelOldWithMarkSweep, false, \ |
|
1148 "Use the MarkSweep code to verify phases of Parallel Old") \ |
|
1149 \ |
|
1150 develop(uintx, VerifyParallelOldWithMarkSweepInterval, 1, \ |
|
1151 "Interval at which the MarkSweep code is used to verify " \ |
|
1152 "phases of Parallel Old") \ |
|
1153 \ |
|
1154 develop(bool, ParallelOldMTUnsafeMarkBitMap, false, \ |
|
1155 "Use the Parallel Old MT unsafe in marking the bitmap") \ |
|
1156 \ |
|
1157 develop(bool, ParallelOldMTUnsafeUpdateLiveData, false, \ |
|
1158 "Use the Parallel Old MT unsafe in update of live size") \ |
|
1159 \ |
|
1160 develop(bool, TraceChunkTasksQueuing, false, \ |
|
1161 "Trace the queuing of the chunk tasks") \ |
|
1162 \ |
|
1163 product(uintx, YoungPLABSize, 4096, \ |
|
1164 "Size of young gen promotion labs (in HeapWords)") \ |
|
1165 \ |
|
1166 product(uintx, OldPLABSize, 1024, \ |
|
1167 "Size of old gen promotion labs (in HeapWords)") \ |
|
1168 \ |
|
1169 product(uintx, GCTaskTimeStampEntries, 200, \ |
|
1170 "Number of time stamp entries per gc worker thread") \ |
|
1171 \ |
|
1172 product(bool, AlwaysTenure, false, \ |
|
1173 "Always tenure objects in eden. (ParallelGC only)") \ |
|
1174 \ |
|
1175 product(bool, NeverTenure, false, \ |
|
1176 "Never tenure objects in eden, May tenure on overflow" \ |
|
1177 " (ParallelGC only)") \ |
|
1178 \ |
|
1179 product(bool, ScavengeBeforeFullGC, true, \ |
|
1180 "Scavenge youngest generation before each full GC," \ |
|
1181 " used with UseParallelGC") \ |
|
1182 \ |
|
1183 develop(bool, ScavengeWithObjectsInToSpace, false, \ |
|
1184 "Allow scavenges to occur when to_space contains objects.") \ |
|
1185 \ |
|
1186 product(bool, UseConcMarkSweepGC, false, \ |
|
1187 "Use Concurrent Mark-Sweep GC in the old generation") \ |
|
1188 \ |
|
1189 product(bool, ExplicitGCInvokesConcurrent, false, \ |
|
1190 "A System.gc() request invokes a concurrent collection;" \ |
|
1191 " (effective only when UseConcMarkSweepGC)") \ |
|
1192 \ |
|
1193 product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \ |
|
1194 "A System.gc() request invokes a concurrent collection and" \ |
|
1195 " also unloads classes during such a concurrent gc cycle " \ |
|
1196 " (effective only when UseConcMarkSweepGC)") \ |
|
1197 \ |
|
1198 develop(bool, UseCMSAdaptiveFreeLists, true, \ |
|
1199 "Use Adaptive Free Lists in the CMS generation") \ |
|
1200 \ |
|
1201 develop(bool, UseAsyncConcMarkSweepGC, true, \ |
|
1202 "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\ |
|
1203 \ |
|
1204 develop(bool, RotateCMSCollectionTypes, false, \ |
|
1205 "Rotate the CMS collections among concurrent and STW") \ |
|
1206 \ |
|
1207 product(bool, UseCMSBestFit, true, \ |
|
1208 "Use CMS best fit allocation strategy") \ |
|
1209 \ |
|
1210 product(bool, UseCMSCollectionPassing, true, \ |
|
1211 "Use passing of collection from background to foreground") \ |
|
1212 \ |
|
1213 product(bool, UseParNewGC, false, \ |
|
1214 "Use parallel threads in the new generation.") \ |
|
1215 \ |
|
1216 product(bool, ParallelGCVerbose, false, \ |
|
1217 "Verbose output for parallel GC.") \ |
|
1218 \ |
|
1219 product(intx, ParallelGCBufferWastePct, 10, \ |
|
1220 "wasted fraction of parallel allocation buffer.") \ |
|
1221 \ |
|
1222 product(bool, ParallelGCRetainPLAB, true, \ |
|
1223 "Retain parallel allocation buffers across scavenges.") \ |
|
1224 \ |
|
1225 product(intx, TargetPLABWastePct, 10, \ |
|
1226 "target wasted space in last buffer as pct of overall allocation")\ |
|
1227 \ |
|
1228 product(uintx, PLABWeight, 75, \ |
|
1229 "Percentage (0-100) used to weight the current sample when" \ |
|
1230 "computing exponentially decaying average for ResizePLAB.") \ |
|
1231 \ |
|
1232 product(bool, ResizePLAB, true, \ |
|
1233 "Dynamically resize (survivor space) promotion labs") \ |
|
1234 \ |
|
1235 product(bool, PrintPLAB, false, \ |
|
1236 "Print (survivor space) promotion labs sizing decisions") \ |
|
1237 \ |
|
1238 product(intx, ParGCArrayScanChunk, 50, \ |
|
1239 "Scan a subset and push remainder, if array is bigger than this") \ |
|
1240 \ |
|
1241 product(intx, ParGCDesiredObjsFromOverflowList, 20, \ |
|
1242 "The desired number of objects to claim from the overflow list") \ |
|
1243 \ |
|
1244 product(uintx, CMSParPromoteBlocksToClaim, 50, \ |
|
1245 "Number of blocks to attempt to claim when refilling CMS LAB for "\ |
|
1246 "parallel GC.") \ |
|
1247 \ |
|
1248 product(bool, AlwaysPreTouch, false, \ |
|
1249 "It forces all freshly committed pages to be pre-touched.") \ |
|
1250 \ |
|
1251 product(bool, CMSUseOldDefaults, false, \ |
|
1252 "A flag temporarily introduced to allow reverting to some older" \ |
|
1253 "default settings; older as of 6.0 ") \ |
|
1254 \ |
|
1255 product(intx, CMSYoungGenPerWorker, 16*M, \ |
|
1256 "The amount of young gen chosen by default per GC worker " \ |
|
1257 "thread available ") \ |
|
1258 \ |
|
1259 product(bool, CMSIncrementalMode, false, \ |
|
1260 "Whether CMS GC should operate in \"incremental\" mode") \ |
|
1261 \ |
|
1262 product(uintx, CMSIncrementalDutyCycle, 10, \ |
|
1263 "CMS incremental mode duty cycle (a percentage, 0-100). If" \ |
|
1264 "CMSIncrementalPacing is enabled, then this is just the initial" \ |
|
1265 "value") \ |
|
1266 \ |
|
1267 product(bool, CMSIncrementalPacing, true, \ |
|
1268 "Whether the CMS incremental mode duty cycle should be " \ |
|
1269 "automatically adjusted") \ |
|
1270 \ |
|
1271 product(uintx, CMSIncrementalDutyCycleMin, 0, \ |
|
1272 "Lower bound on the duty cycle when CMSIncrementalPacing is" \ |
|
1273 "enabled (a percentage, 0-100).") \ |
|
1274 \ |
|
1275 product(uintx, CMSIncrementalSafetyFactor, 10, \ |
|
1276 "Percentage (0-100) used to add conservatism when computing the" \ |
|
1277 "duty cycle.") \ |
|
1278 \ |
|
1279 product(uintx, CMSIncrementalOffset, 0, \ |
|
1280 "Percentage (0-100) by which the CMS incremental mode duty cycle" \ |
|
1281 "is shifted to the right within the period between young GCs") \ |
|
1282 \ |
|
1283 product(uintx, CMSExpAvgFactor, 25, \ |
|
1284 "Percentage (0-100) used to weight the current sample when" \ |
|
1285 "computing exponential averages for CMS statistics.") \ |
|
1286 \ |
|
1287 product(uintx, CMS_FLSWeight, 50, \ |
|
1288 "Percentage (0-100) used to weight the current sample when" \ |
|
1289 "computing exponentially decating averages for CMS FLS statistics.") \ |
|
1290 \ |
|
1291 product(uintx, CMS_FLSPadding, 2, \ |
|
1292 "The multiple of deviation from mean to use for buffering" \ |
|
1293 "against volatility in free list demand.") \ |
|
1294 \ |
|
1295 product(uintx, FLSCoalescePolicy, 2, \ |
|
1296 "CMS: Aggression level for coalescing, increasing from 0 to 4") \ |
|
1297 \ |
|
1298 product(uintx, CMS_SweepWeight, 50, \ |
|
1299 "Percentage (0-100) used to weight the current sample when" \ |
|
1300 "computing exponentially decaying average for inter-sweep duration.") \ |
|
1301 \ |
|
1302 product(uintx, CMS_SweepPadding, 2, \ |
|
1303 "The multiple of deviation from mean to use for buffering" \ |
|
1304 "against volatility in inter-sweep duration.") \ |
|
1305 \ |
|
1306 product(uintx, CMS_SweepTimerThresholdMillis, 10, \ |
|
1307 "Skip block flux-rate sampling for an epoch unless inter-sweep " \ |
|
1308 " duration exceeds this threhold in milliseconds") \ |
|
1309 \ |
|
1310 develop(bool, CMSTraceIncrementalMode, false, \ |
|
1311 "Trace CMS incremental mode") \ |
|
1312 \ |
|
1313 develop(bool, CMSTraceIncrementalPacing, false, \ |
|
1314 "Trace CMS incremental mode pacing computation") \ |
|
1315 \ |
|
1316 develop(bool, CMSTraceThreadState, false, \ |
|
1317 "Trace the CMS thread state (enable the trace_state() method)") \ |
|
1318 \ |
|
1319 product(bool, CMSClassUnloadingEnabled, false, \ |
|
1320 "Whether class unloading enabled when using CMS GC") \ |
|
1321 \ |
|
1322 product(bool, CMSCompactWhenClearAllSoftRefs, true, \ |
|
1323 "Compact when asked to collect CMS gen with clear_all_soft_refs") \ |
|
1324 \ |
|
1325 product(bool, UseCMSCompactAtFullCollection, true, \ |
|
1326 "Use mark sweep compact at full collections") \ |
|
1327 \ |
|
1328 product(uintx, CMSFullGCsBeforeCompaction, 0, \ |
|
1329 "Number of CMS full collection done before compaction if > 0") \ |
|
1330 \ |
|
1331 develop(intx, CMSDictionaryChoice, 0, \ |
|
1332 "Use BinaryTreeDictionary as default in the CMS generation") \ |
|
1333 \ |
|
1334 product(uintx, CMSIndexedFreeListReplenish, 4, \ |
|
1335 "Replenish and indexed free list with this number of chunks") \ |
|
1336 \ |
|
1337 product(bool, CMSLoopWarn, false, \ |
|
1338 "Warn in case of excessive CMS looping") \ |
|
1339 \ |
|
1340 develop(bool, CMSOverflowEarlyRestoration, false, \ |
|
1341 "Whether preserved marks should be restored early") \ |
|
1342 \ |
|
1343 product(uintx, CMSMarkStackSize, 32*K, \ |
|
1344 "Size of CMS marking stack") \ |
|
1345 \ |
|
1346 product(uintx, CMSMarkStackSizeMax, 4*M, \ |
|
1347 "Max size of CMS marking stack") \ |
|
1348 \ |
|
1349 notproduct(bool, CMSMarkStackOverflowALot, false, \ |
|
1350 "Whether we should simulate frequent marking stack / work queue" \ |
|
1351 " overflow") \ |
|
1352 \ |
|
1353 notproduct(intx, CMSMarkStackOverflowInterval, 1000, \ |
|
1354 "A per-thread `interval' counter that determines how frequently" \ |
|
1355 " we simulate overflow; a smaller number increases frequency") \ |
|
1356 \ |
|
1357 product(uintx, CMSMaxAbortablePrecleanLoops, 0, \ |
|
1358 "(Temporary, subject to experimentation)" \ |
|
1359 "Maximum number of abortable preclean iterations, if > 0") \ |
|
1360 \ |
|
1361 product(intx, CMSMaxAbortablePrecleanTime, 5000, \ |
|
1362 "(Temporary, subject to experimentation)" \ |
|
1363 "Maximum time in abortable preclean in ms") \ |
|
1364 \ |
|
1365 product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \ |
|
1366 "(Temporary, subject to experimentation)" \ |
|
1367 "Nominal minimum work per abortable preclean iteration") \ |
|
1368 \ |
|
1369 product(intx, CMSAbortablePrecleanWaitMillis, 100, \ |
|
1370 "(Temporary, subject to experimentation)" \ |
|
1371 " Time that we sleep between iterations when not given" \ |
|
1372 " enough work per iteration") \ |
|
1373 \ |
|
1374 product(uintx, CMSRescanMultiple, 32, \ |
|
1375 "Size (in cards) of CMS parallel rescan task") \ |
|
1376 \ |
|
1377 product(uintx, CMSConcMarkMultiple, 32, \ |
|
1378 "Size (in cards) of CMS concurrent MT marking task") \ |
|
1379 \ |
|
1380 product(uintx, CMSRevisitStackSize, 1*M, \ |
|
1381 "Size of CMS KlassKlass revisit stack") \ |
|
1382 \ |
|
1383 product(bool, CMSAbortSemantics, false, \ |
|
1384 "Whether abort-on-overflow semantics is implemented") \ |
|
1385 \ |
|
1386 product(bool, CMSParallelRemarkEnabled, true, \ |
|
1387 "Whether parallel remark enabled (only if ParNewGC)") \ |
|
1388 \ |
|
1389 product(bool, CMSParallelSurvivorRemarkEnabled, true, \ |
|
1390 "Whether parallel remark of survivor space" \ |
|
1391 " enabled (effective only if CMSParallelRemarkEnabled)") \ |
|
1392 \ |
|
1393 product(bool, CMSPLABRecordAlways, true, \ |
|
1394 "Whether to always record survivor space PLAB bdries" \ |
|
1395 " (effective only if CMSParallelSurvivorRemarkEnabled)") \ |
|
1396 \ |
|
1397 product(bool, CMSConcurrentMTEnabled, true, \ |
|
1398 "Whether multi-threaded concurrent work enabled (if ParNewGC)") \ |
|
1399 \ |
|
1400 product(bool, CMSPermGenPrecleaningEnabled, true, \ |
|
1401 "Whether concurrent precleaning enabled in perm gen" \ |
|
1402 " (effective only when CMSPrecleaningEnabled is true)") \ |
|
1403 \ |
|
1404 product(bool, CMSPrecleaningEnabled, true, \ |
|
1405 "Whether concurrent precleaning enabled") \ |
|
1406 \ |
|
1407 product(uintx, CMSPrecleanIter, 3, \ |
|
1408 "Maximum number of precleaning iteration passes") \ |
|
1409 \ |
|
1410 product(uintx, CMSPrecleanNumerator, 2, \ |
|
1411 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ |
|
1412 " ratio") \ |
|
1413 \ |
|
1414 product(uintx, CMSPrecleanDenominator, 3, \ |
|
1415 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ |
|
1416 " ratio") \ |
|
1417 \ |
|
1418 product(bool, CMSPrecleanRefLists1, true, \ |
|
1419 "Preclean ref lists during (initial) preclean phase") \ |
|
1420 \ |
|
1421 product(bool, CMSPrecleanRefLists2, false, \ |
|
1422 "Preclean ref lists during abortable preclean phase") \ |
|
1423 \ |
|
1424 product(bool, CMSPrecleanSurvivors1, false, \ |
|
1425 "Preclean survivors during (initial) preclean phase") \ |
|
1426 \ |
|
1427 product(bool, CMSPrecleanSurvivors2, true, \ |
|
1428 "Preclean survivors during abortable preclean phase") \ |
|
1429 \ |
|
1430 product(uintx, CMSPrecleanThreshold, 1000, \ |
|
1431 "Don't re-iterate if #dirty cards less than this") \ |
|
1432 \ |
|
1433 product(bool, CMSCleanOnEnter, true, \ |
|
1434 "Clean-on-enter optimization for reducing number of dirty cards") \ |
|
1435 \ |
|
1436 product(uintx, CMSRemarkVerifyVariant, 1, \ |
|
1437 "Choose variant (1,2) of verification following remark") \ |
|
1438 \ |
|
1439 product(uintx, CMSScheduleRemarkEdenSizeThreshold, 2*M, \ |
|
1440 "If Eden used is below this value, don't try to schedule remark") \ |
|
1441 \ |
|
1442 product(uintx, CMSScheduleRemarkEdenPenetration, 50, \ |
|
1443 "The Eden occupancy % at which to try and schedule remark pause") \ |
|
1444 \ |
|
1445 product(uintx, CMSScheduleRemarkSamplingRatio, 5, \ |
|
1446 "Start sampling Eden top at least before yg occupancy reaches" \ |
|
1447 " 1/<ratio> of the size at which we plan to schedule remark") \ |
|
1448 \ |
|
1449 product(uintx, CMSSamplingGrain, 16*K, \ |
|
1450 "The minimum distance between eden samples for CMS (see above)") \ |
|
1451 \ |
|
1452 product(bool, CMSScavengeBeforeRemark, false, \ |
|
1453 "Attempt scavenge before the CMS remark step") \ |
|
1454 \ |
|
1455 develop(bool, CMSTraceSweeper, false, \ |
|
1456 "Trace some actions of the CMS sweeper") \ |
|
1457 \ |
|
1458 product(uintx, CMSWorkQueueDrainThreshold, 10, \ |
|
1459 "Don't drain below this size per parallel worker/thief") \ |
|
1460 \ |
|
1461 product(intx, CMSWaitDuration, 2000, \ |
|
1462 "Time in milliseconds that CMS thread waits for young GC") \ |
|
1463 \ |
|
1464 product(bool, CMSYield, true, \ |
|
1465 "Yield between steps of concurrent mark & sweep") \ |
|
1466 \ |
|
1467 product(uintx, CMSBitMapYieldQuantum, 10*M, \ |
|
1468 "Bitmap operations should process at most this many bits" \ |
|
1469 "between yields") \ |
|
1470 \ |
|
1471 diagnostic(bool, FLSVerifyAllHeapReferences, false, \ |
|
1472 "Verify that all refs across the FLS boundary " \ |
|
1473 " are to valid objects") \ |
|
1474 \ |
|
1475 diagnostic(bool, FLSVerifyLists, false, \ |
|
1476 "Do lots of (expensive) FreeListSpace verification") \ |
|
1477 \ |
|
1478 diagnostic(bool, FLSVerifyIndexTable, false, \ |
|
1479 "Do lots of (expensive) FLS index table verification") \ |
|
1480 \ |
|
1481 develop(bool, FLSVerifyDictionary, false, \ |
|
1482 "Do lots of (expensive) FLS dictionary verification") \ |
|
1483 \ |
|
1484 develop(bool, VerifyBlockOffsetArray, false, \ |
|
1485 "Do (expensive!) block offset array verification") \ |
|
1486 \ |
|
1487 product(bool, BlockOffsetArrayUseUnallocatedBlock, trueInDebug, \ |
|
1488 "Maintain _unallocated_block in BlockOffsetArray" \ |
|
1489 " (currently applicable only to CMS collector)") \ |
|
1490 \ |
|
1491 develop(bool, TraceCMSState, false, \ |
|
1492 "Trace the state of the CMS collection") \ |
|
1493 \ |
|
1494 product(intx, RefDiscoveryPolicy, 0, \ |
|
1495 "Whether reference-based(0) or referent-based(1)") \ |
|
1496 \ |
|
1497 product(bool, ParallelRefProcEnabled, false, \ |
|
1498 "Enable parallel reference processing whenever possible") \ |
|
1499 \ |
|
1500 product(bool, ParallelRefProcBalancingEnabled, true, \ |
|
1501 "Enable balancing of reference processing queues") \ |
|
1502 \ |
|
1503 product(intx, CMSTriggerRatio, 80, \ |
|
1504 "Percentage of MinHeapFreeRatio in CMS generation that is " \ |
|
1505 " allocated before a CMS collection cycle commences") \ |
|
1506 \ |
|
1507 product(intx, CMSBootstrapOccupancy, 50, \ |
|
1508 "Percentage CMS generation occupancy at which to " \ |
|
1509 " initiate CMS collection for bootstrapping collection stats") \ |
|
1510 \ |
|
1511 product(intx, CMSInitiatingOccupancyFraction, -1, \ |
|
1512 "Percentage CMS generation occupancy to start a CMS collection " \ |
|
1513 " cycle (A negative value means that CMSTirggerRatio is used)") \ |
|
1514 \ |
|
1515 product(bool, UseCMSInitiatingOccupancyOnly, false, \ |
|
1516 "Only use occupancy as a crierion for starting a CMS collection") \ |
|
1517 \ |
|
1518 develop(bool, CMSTestInFreeList, false, \ |
|
1519 "Check if the coalesced range is already in the " \ |
|
1520 "free lists as claimed.") \ |
|
1521 \ |
|
1522 notproduct(bool, CMSVerifyReturnedBytes, false, \ |
|
1523 "Check that all the garbage collected was returned to the " \ |
|
1524 "free lists.") \ |
|
1525 \ |
|
1526 notproduct(bool, ScavengeALot, false, \ |
|
1527 "Force scavenge at every Nth exit from the runtime system " \ |
|
1528 "(N=ScavengeALotInterval)") \ |
|
1529 \ |
|
1530 develop(bool, FullGCALot, false, \ |
|
1531 "Force full gc at every Nth exit from the runtime system " \ |
|
1532 "(N=FullGCALotInterval)") \ |
|
1533 \ |
|
1534 notproduct(bool, GCALotAtAllSafepoints, false, \ |
|
1535 "Enforce ScavengeALot/GCALot at all potential safepoints") \ |
|
1536 \ |
|
1537 product(bool, HandlePromotionFailure, true, \ |
|
1538 "The youngest generation collection does not require" \ |
|
1539 " a guarantee of full promotion of all live objects.") \ |
|
1540 \ |
|
1541 notproduct(bool, PromotionFailureALot, false, \ |
|
1542 "Use promotion failure handling on every youngest generation " \ |
|
1543 "collection") \ |
|
1544 \ |
|
1545 develop(uintx, PromotionFailureALotCount, 1000, \ |
|
1546 "Number of promotion failures occurring at ParGCAllocBuffer" \ |
|
1547 "refill attempts (ParNew) or promotion attempts " \ |
|
1548 "(other young collectors) ") \ |
|
1549 \ |
|
1550 develop(uintx, PromotionFailureALotInterval, 5, \ |
|
1551 "Total collections between promotion failures alot") \ |
|
1552 \ |
|
1553 develop(intx, WorkStealingSleepMillis, 1, \ |
|
1554 "Sleep time when sleep is used for yields") \ |
|
1555 \ |
|
1556 develop(uintx, WorkStealingYieldsBeforeSleep, 1000, \ |
|
1557 "Number of yields before a sleep is done during workstealing") \ |
|
1558 \ |
|
1559 product(uintx, PreserveMarkStackSize, 40, \ |
|
1560 "Size for stack used in promotion failure handling") \ |
|
1561 \ |
|
1562 product_pd(bool, UseTLAB, "Use thread-local object allocation") \ |
|
1563 \ |
|
1564 product_pd(bool, ResizeTLAB, \ |
|
1565 "Dynamically resize tlab size for threads") \ |
|
1566 \ |
|
1567 product(bool, ZeroTLAB, false, \ |
|
1568 "Zero out the newly created TLAB") \ |
|
1569 \ |
|
1570 product(bool, PrintTLAB, false, \ |
|
1571 "Print various TLAB related information") \ |
|
1572 \ |
|
1573 product(bool, TLABStats, true, \ |
|
1574 "Print various TLAB related information") \ |
|
1575 \ |
|
1576 product_pd(bool, NeverActAsServerClassMachine, \ |
|
1577 "Never act like a server-class machine") \ |
|
1578 \ |
|
1579 product(bool, AlwaysActAsServerClassMachine, false, \ |
|
1580 "Always act like a server-class machine") \ |
|
1581 \ |
|
1582 product_pd(uintx, DefaultMaxRAM, \ |
|
1583 "Maximum real memory size for setting server class heap size") \ |
|
1584 \ |
|
1585 product(uintx, DefaultMaxRAMFraction, 4, \ |
|
1586 "Fraction (1/n) of real memory used for server class max heap") \ |
|
1587 \ |
|
1588 product(uintx, DefaultInitialRAMFraction, 64, \ |
|
1589 "Fraction (1/n) of real memory used for server class initial heap") \ |
|
1590 \ |
|
1591 product(bool, UseAutoGCSelectPolicy, false, \ |
|
1592 "Use automatic collection selection policy") \ |
|
1593 \ |
|
1594 product(uintx, AutoGCSelectPauseMillis, 5000, \ |
|
1595 "Automatic GC selection pause threshhold in ms") \ |
|
1596 \ |
|
1597 product(bool, UseAdaptiveSizePolicy, true, \ |
|
1598 "Use adaptive generation sizing policies") \ |
|
1599 \ |
|
1600 product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \ |
|
1601 "Use adaptive survivor sizing policies") \ |
|
1602 \ |
|
1603 product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \ |
|
1604 "Use adaptive young-old sizing policies at minor collections") \ |
|
1605 \ |
|
1606 product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \ |
|
1607 "Use adaptive young-old sizing policies at major collections") \ |
|
1608 \ |
|
1609 product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \ |
|
1610 "Use statistics from System.GC for adaptive size policy") \ |
|
1611 \ |
|
1612 product(bool, UseAdaptiveGCBoundary, false, \ |
|
1613 "Allow young-old boundary to move") \ |
|
1614 \ |
|
1615 develop(bool, TraceAdaptiveGCBoundary, false, \ |
|
1616 "Trace young-old boundary moves") \ |
|
1617 \ |
|
1618 develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \ |
|
1619 "Resize the virtual spaces of the young or old generations") \ |
|
1620 \ |
|
1621 product(uintx, AdaptiveSizeThroughPutPolicy, 0, \ |
|
1622 "Policy for changeing generation size for throughput goals") \ |
|
1623 \ |
|
1624 product(uintx, AdaptiveSizePausePolicy, 0, \ |
|
1625 "Policy for changing generation size for pause goals") \ |
|
1626 \ |
|
1627 develop(bool, PSAdjustTenuredGenForMinorPause, false, \ |
|
1628 "Adjust tenured generation to achive a minor pause goal") \ |
|
1629 \ |
|
1630 develop(bool, PSAdjustYoungGenForMajorPause, false, \ |
|
1631 "Adjust young generation to achive a major pause goal") \ |
|
1632 \ |
|
1633 product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \ |
|
1634 "Number of steps where heuristics is used before data is used") \ |
|
1635 \ |
|
1636 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \ |
|
1637 "Number of collections before the adaptive sizing is started") \ |
|
1638 \ |
|
1639 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \ |
|
1640 "Collecton interval for printing information, zero => never") \ |
|
1641 \ |
|
1642 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \ |
|
1643 "Use adaptive minimum footprint as a goal") \ |
|
1644 \ |
|
1645 product(uintx, AdaptiveSizePolicyWeight, 10, \ |
|
1646 "Weight given to exponential resizing, between 0 and 100") \ |
|
1647 \ |
|
1648 product(uintx, AdaptiveTimeWeight, 25, \ |
|
1649 "Weight given to time in adaptive policy, between 0 and 100") \ |
|
1650 \ |
|
1651 product(uintx, PausePadding, 1, \ |
|
1652 "How much buffer to keep for pause time") \ |
|
1653 \ |
|
1654 product(uintx, PromotedPadding, 3, \ |
|
1655 "How much buffer to keep for promotion failure") \ |
|
1656 \ |
|
1657 product(uintx, SurvivorPadding, 3, \ |
|
1658 "How much buffer to keep for survivor overflow") \ |
|
1659 \ |
|
1660 product(uintx, AdaptivePermSizeWeight, 20, \ |
|
1661 "Weight for perm gen exponential resizing, between 0 and 100") \ |
|
1662 \ |
|
1663 product(uintx, PermGenPadding, 3, \ |
|
1664 "How much buffer to keep for perm gen sizing") \ |
|
1665 \ |
|
1666 product(uintx, ThresholdTolerance, 10, \ |
|
1667 "Allowed collection cost difference between generations") \ |
|
1668 \ |
|
1669 product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \ |
|
1670 "If collection costs are within margin, reduce both by full delta") \ |
|
1671 \ |
|
1672 product(uintx, YoungGenerationSizeIncrement, 20, \ |
|
1673 "Adaptive size percentage change in young generation") \ |
|
1674 \ |
|
1675 product(uintx, YoungGenerationSizeSupplement, 80, \ |
|
1676 "Supplement to YoungedGenerationSizeIncrement used at startup") \ |
|
1677 \ |
|
1678 product(uintx, YoungGenerationSizeSupplementDecay, 8, \ |
|
1679 "Decay factor to YoungedGenerationSizeSupplement") \ |
|
1680 \ |
|
1681 product(uintx, TenuredGenerationSizeIncrement, 20, \ |
|
1682 "Adaptive size percentage change in tenured generation") \ |
|
1683 \ |
|
1684 product(uintx, TenuredGenerationSizeSupplement, 80, \ |
|
1685 "Supplement to TenuredGenerationSizeIncrement used at startup") \ |
|
1686 \ |
|
1687 product(uintx, TenuredGenerationSizeSupplementDecay, 2, \ |
|
1688 "Decay factor to TenuredGenerationSizeIncrement") \ |
|
1689 \ |
|
1690 product(uintx, MaxGCPauseMillis, max_uintx, \ |
|
1691 "Adaptive size policy maximum GC pause time goal in msec") \ |
|
1692 \ |
|
1693 product(uintx, MaxGCMinorPauseMillis, max_uintx, \ |
|
1694 "Adaptive size policy maximum GC minor pause time goal in msec") \ |
|
1695 \ |
|
1696 product(uintx, GCTimeRatio, 99, \ |
|
1697 "Adaptive size policy application time to GC time ratio") \ |
|
1698 \ |
|
1699 product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \ |
|
1700 "Adaptive size scale down factor for shrinking") \ |
|
1701 \ |
|
1702 product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \ |
|
1703 "Adaptive size decays the major cost for long major intervals") \ |
|
1704 \ |
|
1705 product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \ |
|
1706 "Time scale over which major costs decay") \ |
|
1707 \ |
|
1708 product(uintx, MinSurvivorRatio, 3, \ |
|
1709 "Minimum ratio of young generation/survivor space size") \ |
|
1710 \ |
|
1711 product(uintx, InitialSurvivorRatio, 8, \ |
|
1712 "Initial ratio of eden/survivor space size") \ |
|
1713 \ |
|
1714 product(uintx, BaseFootPrintEstimate, 256*M, \ |
|
1715 "Estimate of footprint other than Java Heap") \ |
|
1716 \ |
|
1717 product(bool, UseGCOverheadLimit, true, \ |
|
1718 "Use policy to limit of proportion of time spent in GC " \ |
|
1719 "before an OutOfMemory error is thrown") \ |
|
1720 \ |
|
1721 product(uintx, GCTimeLimit, 98, \ |
|
1722 "Limit of proportion of time spent in GC before an OutOfMemory" \ |
|
1723 "error is thrown (used with GCHeapFreeLimit)") \ |
|
1724 \ |
|
1725 product(uintx, GCHeapFreeLimit, 2, \ |
|
1726 "Minimum percentage of free space after a full GC before an " \ |
|
1727 "OutOfMemoryError is thrown (used with GCTimeLimit)") \ |
|
1728 \ |
|
1729 develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \ |
|
1730 "Number of consecutive collections before gc time limit fires") \ |
|
1731 \ |
|
1732 product(bool, PrintAdaptiveSizePolicy, false, \ |
|
1733 "Print information about AdaptiveSizePolicy") \ |
|
1734 \ |
|
1735 product(intx, PrefetchCopyIntervalInBytes, -1, \ |
|
1736 "How far ahead to prefetch destination area (<= 0 means off)") \ |
|
1737 \ |
|
1738 product(intx, PrefetchScanIntervalInBytes, -1, \ |
|
1739 "How far ahead to prefetch scan area (<= 0 means off)") \ |
|
1740 \ |
|
1741 product(intx, PrefetchFieldsAhead, -1, \ |
|
1742 "How many fields ahead to prefetch in oop scan (<= 0 means off)") \ |
|
1743 \ |
|
1744 develop(bool, UsePrefetchQueue, true, \ |
|
1745 "Use the prefetch queue during PS promotion") \ |
|
1746 \ |
|
1747 diagnostic(bool, VerifyBeforeExit, trueInDebug, \ |
|
1748 "Verify system before exiting") \ |
|
1749 \ |
|
1750 diagnostic(bool, VerifyBeforeGC, false, \ |
|
1751 "Verify memory system before GC") \ |
|
1752 \ |
|
1753 diagnostic(bool, VerifyAfterGC, false, \ |
|
1754 "Verify memory system after GC") \ |
|
1755 \ |
|
1756 diagnostic(bool, VerifyDuringGC, false, \ |
|
1757 "Verify memory system during GC (between phases)") \ |
|
1758 \ |
|
1759 diagnostic(bool, VerifyRememberedSets, false, \ |
|
1760 "Verify GC remembered sets") \ |
|
1761 \ |
|
1762 diagnostic(bool, VerifyObjectStartArray, true, \ |
|
1763 "Verify GC object start array if verify before/after") \ |
|
1764 \ |
|
1765 product(bool, DisableExplicitGC, false, \ |
|
1766 "Tells whether calling System.gc() does a full GC") \ |
|
1767 \ |
|
1768 notproduct(bool, CheckMemoryInitialization, false, \ |
|
1769 "Checks memory initialization") \ |
|
1770 \ |
|
1771 product(bool, CollectGen0First, false, \ |
|
1772 "Collect youngest generation before each full GC") \ |
|
1773 \ |
|
1774 diagnostic(bool, BindCMSThreadToCPU, false, \ |
|
1775 "Bind CMS Thread to CPU if possible") \ |
|
1776 \ |
|
1777 diagnostic(uintx, CPUForCMSThread, 0, \ |
|
1778 "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \ |
|
1779 \ |
|
1780 product(bool, BindGCTaskThreadsToCPUs, false, \ |
|
1781 "Bind GCTaskThreads to CPUs if possible") \ |
|
1782 \ |
|
1783 product(bool, UseGCTaskAffinity, false, \ |
|
1784 "Use worker affinity when asking for GCTasks") \ |
|
1785 \ |
|
1786 product(uintx, ProcessDistributionStride, 4, \ |
|
1787 "Stride through processors when distributing processes") \ |
|
1788 \ |
|
1789 product(uintx, CMSCoordinatorYieldSleepCount, 10, \ |
|
1790 "number of times the coordinator GC thread will sleep while " \ |
|
1791 "yielding before giving up and resuming GC") \ |
|
1792 \ |
|
1793 product(uintx, CMSYieldSleepCount, 0, \ |
|
1794 "number of times a GC thread (minus the coordinator) " \ |
|
1795 "will sleep while yielding before giving up and resuming GC") \ |
|
1796 \ |
|
1797 /* gc tracing */ \ |
|
1798 manageable(bool, PrintGC, false, \ |
|
1799 "Print message at garbage collect") \ |
|
1800 \ |
|
1801 manageable(bool, PrintGCDetails, false, \ |
|
1802 "Print more details at garbage collect") \ |
|
1803 \ |
|
1804 manageable(bool, PrintGCDateStamps, false, \ |
|
1805 "Print date stamps at garbage collect") \ |
|
1806 \ |
|
1807 manageable(bool, PrintGCTimeStamps, false, \ |
|
1808 "Print timestamps at garbage collect") \ |
|
1809 \ |
|
1810 product(bool, PrintGCTaskTimeStamps, false, \ |
|
1811 "Print timestamps for individual gc worker thread tasks") \ |
|
1812 \ |
|
1813 develop(intx, ConcGCYieldTimeout, 0, \ |
|
1814 "If non-zero, assert that GC threads yield within this # of ms.") \ |
|
1815 \ |
|
1816 notproduct(bool, TraceMarkSweep, false, \ |
|
1817 "Trace mark sweep") \ |
|
1818 \ |
|
1819 product(bool, PrintReferenceGC, false, \ |
|
1820 "Print times spent handling reference objects during GC " \ |
|
1821 " (enabled only when PrintGCDetails)") \ |
|
1822 \ |
|
1823 develop(bool, TraceReferenceGC, false, \ |
|
1824 "Trace handling of soft/weak/final/phantom references") \ |
|
1825 \ |
|
1826 develop(bool, TraceFinalizerRegistration, false, \ |
|
1827 "Trace registration of final references") \ |
|
1828 \ |
|
1829 notproduct(bool, TraceScavenge, false, \ |
|
1830 "Trace scavenge") \ |
|
1831 \ |
|
1832 product_rw(bool, TraceClassLoading, false, \ |
|
1833 "Trace all classes loaded") \ |
|
1834 \ |
|
1835 product(bool, TraceClassLoadingPreorder, false, \ |
|
1836 "Trace all classes loaded in order referenced (not loaded)") \ |
|
1837 \ |
|
1838 product_rw(bool, TraceClassUnloading, false, \ |
|
1839 "Trace unloading of classes") \ |
|
1840 \ |
|
1841 product_rw(bool, TraceLoaderConstraints, false, \ |
|
1842 "Trace loader constraints") \ |
|
1843 \ |
|
1844 product(bool, TraceGen0Time, false, \ |
|
1845 "Trace accumulated time for Gen 0 collection") \ |
|
1846 \ |
|
1847 product(bool, TraceGen1Time, false, \ |
|
1848 "Trace accumulated time for Gen 1 collection") \ |
|
1849 \ |
|
1850 product(bool, PrintTenuringDistribution, false, \ |
|
1851 "Print tenuring age information") \ |
|
1852 \ |
|
1853 product_rw(bool, PrintHeapAtGC, false, \ |
|
1854 "Print heap layout before and after each GC") \ |
|
1855 \ |
|
1856 product(bool, PrintHeapAtSIGBREAK, true, \ |
|
1857 "Print heap layout in response to SIGBREAK") \ |
|
1858 \ |
|
1859 manageable(bool, PrintClassHistogram, false, \ |
|
1860 "Print a histogram of class instances") \ |
|
1861 \ |
|
1862 develop(bool, TraceWorkGang, false, \ |
|
1863 "Trace activities of work gangs") \ |
|
1864 \ |
|
1865 product(bool, TraceParallelOldGCTasks, false, \ |
|
1866 "Trace multithreaded GC activity") \ |
|
1867 \ |
|
1868 develop(bool, TraceBlockOffsetTable, false, \ |
|
1869 "Print BlockOffsetTable maps") \ |
|
1870 \ |
|
1871 develop(bool, TraceCardTableModRefBS, false, \ |
|
1872 "Print CardTableModRefBS maps") \ |
|
1873 \ |
|
1874 develop(bool, TraceGCTaskManager, false, \ |
|
1875 "Trace actions of the GC task manager") \ |
|
1876 \ |
|
1877 develop(bool, TraceGCTaskQueue, false, \ |
|
1878 "Trace actions of the GC task queues") \ |
|
1879 \ |
|
1880 develop(bool, TraceGCTaskThread, false, \ |
|
1881 "Trace actions of the GC task threads") \ |
|
1882 \ |
|
1883 product(bool, PrintParallelOldGCPhaseTimes, false, \ |
|
1884 "Print the time taken by each parallel old gc phase." \ |
|
1885 "PrintGCDetails must also be enabled.") \ |
|
1886 \ |
|
1887 develop(bool, TraceParallelOldGCMarkingPhase, false, \ |
|
1888 "Trace parallel old gc marking phase") \ |
|
1889 \ |
|
1890 develop(bool, TraceParallelOldGCSummaryPhase, false, \ |
|
1891 "Trace parallel old gc summary phase") \ |
|
1892 \ |
|
1893 develop(bool, TraceParallelOldGCCompactionPhase, false, \ |
|
1894 "Trace parallel old gc compaction phase") \ |
|
1895 \ |
|
1896 develop(bool, TraceParallelOldGCDensePrefix, false, \ |
|
1897 "Trace parallel old gc dense prefix computation") \ |
|
1898 \ |
|
1899 develop(bool, IgnoreLibthreadGPFault, false, \ |
|
1900 "Suppress workaround for libthread GP fault") \ |
|
1901 \ |
|
1902 /* JVMTI heap profiling */ \ |
|
1903 \ |
|
1904 diagnostic(bool, TraceJVMTIObjectTagging, false, \ |
|
1905 "Trace JVMTI object tagging calls") \ |
|
1906 \ |
|
1907 diagnostic(bool, VerifyBeforeIteration, false, \ |
|
1908 "Verify memory system before JVMTI iteration") \ |
|
1909 \ |
|
1910 /* compiler interface */ \ |
|
1911 \ |
|
1912 develop(bool, CIPrintCompilerName, false, \ |
|
1913 "when CIPrint is active, print the name of the active compiler") \ |
|
1914 \ |
|
1915 develop(bool, CIPrintCompileQueue, false, \ |
|
1916 "display the contents of the compile queue whenever a " \ |
|
1917 "compilation is enqueued") \ |
|
1918 \ |
|
1919 develop(bool, CIPrintRequests, false, \ |
|
1920 "display every request for compilation") \ |
|
1921 \ |
|
1922 product(bool, CITime, false, \ |
|
1923 "collect timing information for compilation") \ |
|
1924 \ |
|
1925 develop(bool, CITimeEach, false, \ |
|
1926 "display timing information after each successful compilation") \ |
|
1927 \ |
|
1928 develop(bool, CICountOSR, true, \ |
|
1929 "use a separate counter when assigning ids to osr compilations") \ |
|
1930 \ |
|
1931 develop(bool, CICompileNatives, true, \ |
|
1932 "compile native methods if supported by the compiler") \ |
|
1933 \ |
|
1934 develop_pd(bool, CICompileOSR, \ |
|
1935 "compile on stack replacement methods if supported by the " \ |
|
1936 "compiler") \ |
|
1937 \ |
|
1938 develop(bool, CIPrintMethodCodes, false, \ |
|
1939 "print method bytecodes of the compiled code") \ |
|
1940 \ |
|
1941 develop(bool, CIPrintTypeFlow, false, \ |
|
1942 "print the results of ciTypeFlow analysis") \ |
|
1943 \ |
|
1944 develop(bool, CITraceTypeFlow, false, \ |
|
1945 "detailed per-bytecode tracing of ciTypeFlow analysis") \ |
|
1946 \ |
|
1947 develop(intx, CICloneLoopTestLimit, 100, \ |
|
1948 "size limit for blocks heuristically cloned in ciTypeFlow") \ |
|
1949 \ |
|
1950 /* temp diagnostics */ \ |
|
1951 \ |
|
1952 diagnostic(bool, TraceRedundantCompiles, false, \ |
|
1953 "Have compile broker print when a request already in the queue is"\ |
|
1954 " requested again") \ |
|
1955 \ |
|
1956 diagnostic(bool, InitialCompileFast, false, \ |
|
1957 "Initial compile at CompLevel_fast_compile") \ |
|
1958 \ |
|
1959 diagnostic(bool, InitialCompileReallyFast, false, \ |
|
1960 "Initial compile at CompLevel_really_fast_compile (no profile)") \ |
|
1961 \ |
|
1962 diagnostic(bool, FullProfileOnReInterpret, true, \ |
|
1963 "On re-interpret unc-trap compile next at CompLevel_fast_compile")\ |
|
1964 \ |
|
1965 /* compiler */ \ |
|
1966 \ |
|
1967 product(intx, CICompilerCount, CI_COMPILER_COUNT, \ |
|
1968 "Number of compiler threads to run") \ |
|
1969 \ |
|
1970 product(intx, CompilationPolicyChoice, 0, \ |
|
1971 "which compilation policy (0/1)") \ |
|
1972 \ |
|
1973 develop(bool, UseStackBanging, true, \ |
|
1974 "use stack banging for stack overflow checks (required for " \ |
|
1975 "proper StackOverflow handling; disable only to measure cost " \ |
|
1976 "of stackbanging)") \ |
|
1977 \ |
|
1978 develop(bool, Use24BitFPMode, true, \ |
|
1979 "Set 24-bit FPU mode on a per-compile basis ") \ |
|
1980 \ |
|
1981 develop(bool, Use24BitFP, true, \ |
|
1982 "use FP instructions that produce 24-bit precise results") \ |
|
1983 \ |
|
1984 develop(bool, UseStrictFP, true, \ |
|
1985 "use strict fp if modifier strictfp is set") \ |
|
1986 \ |
|
1987 develop(bool, GenerateSynchronizationCode, true, \ |
|
1988 "generate locking/unlocking code for synchronized methods and " \ |
|
1989 "monitors") \ |
|
1990 \ |
|
1991 develop(bool, GenerateCompilerNullChecks, true, \ |
|
1992 "Generate explicit null checks for loads/stores/calls") \ |
|
1993 \ |
|
1994 develop(bool, GenerateRangeChecks, true, \ |
|
1995 "Generate range checks for array accesses") \ |
|
1996 \ |
|
1997 develop_pd(bool, ImplicitNullChecks, \ |
|
1998 "generate code for implicit null checks") \ |
|
1999 \ |
|
2000 product(bool, PrintSafepointStatistics, false, \ |
|
2001 "print statistics about safepoint synchronization") \ |
|
2002 \ |
|
2003 product(intx, PrintSafepointStatisticsCount, 300, \ |
|
2004 "total number of safepoint statistics collected " \ |
|
2005 "before printing them out") \ |
|
2006 \ |
|
2007 product(intx, PrintSafepointStatisticsTimeout, -1, \ |
|
2008 "print safepoint statistics only when safepoint takes" \ |
|
2009 " more than PrintSafepointSatisticsTimeout in millis") \ |
|
2010 \ |
|
2011 develop(bool, InlineAccessors, true, \ |
|
2012 "inline accessor methods (get/set)") \ |
|
2013 \ |
|
2014 product(bool, Inline, true, \ |
|
2015 "enable inlining") \ |
|
2016 \ |
|
2017 product(bool, ClipInlining, true, \ |
|
2018 "clip inlining if aggregate method exceeds DesiredMethodLimit") \ |
|
2019 \ |
|
2020 develop(bool, UseCHA, true, \ |
|
2021 "enable CHA") \ |
|
2022 \ |
|
2023 product(bool, UseTypeProfile, true, \ |
|
2024 "Check interpreter profile for historically monomorphic calls") \ |
|
2025 \ |
|
2026 product(intx, TypeProfileMajorReceiverPercent, 90, \ |
|
2027 "% of major receiver type to all profiled receivers") \ |
|
2028 \ |
|
2029 notproduct(bool, TimeCompiler, false, \ |
|
2030 "time the compiler") \ |
|
2031 \ |
|
2032 notproduct(bool, TimeCompiler2, false, \ |
|
2033 "detailed time the compiler (requires +TimeCompiler)") \ |
|
2034 \ |
|
2035 diagnostic(bool, PrintInlining, false, \ |
|
2036 "prints inlining optimizations") \ |
|
2037 \ |
|
2038 diagnostic(bool, PrintIntrinsics, false, \ |
|
2039 "prints attempted and successful inlining of intrinsics") \ |
|
2040 \ |
|
2041 diagnostic(ccstrlist, DisableIntrinsic, "", \ |
|
2042 "do not expand intrinsics whose (internal) names appear here") \ |
|
2043 \ |
|
2044 develop(bool, StressReflectiveCode, false, \ |
|
2045 "Use inexact types at allocations, etc., to test reflection") \ |
|
2046 \ |
|
2047 develop(bool, EagerInitialization, false, \ |
|
2048 "Eagerly initialize classes if possible") \ |
|
2049 \ |
|
2050 product(bool, Tier1UpdateMethodData, trueInTiered, \ |
|
2051 "Update methodDataOops in Tier1-generated code") \ |
|
2052 \ |
|
2053 develop(bool, TraceMethodReplacement, false, \ |
|
2054 "Print when methods are replaced do to recompilation") \ |
|
2055 \ |
|
2056 develop(bool, PrintMethodFlushing, false, \ |
|
2057 "print the nmethods being flushed") \ |
|
2058 \ |
|
2059 notproduct(bool, LogMultipleMutexLocking, false, \ |
|
2060 "log locking and unlocking of mutexes (only if multiple locks " \ |
|
2061 "are held)") \ |
|
2062 \ |
|
2063 develop(bool, UseRelocIndex, false, \ |
|
2064 "use an index to speed random access to relocations") \ |
|
2065 \ |
|
2066 develop(bool, StressCodeBuffers, false, \ |
|
2067 "Exercise code buffer expansion and other rare state changes") \ |
|
2068 \ |
|
2069 diagnostic(bool, DebugNonSafepoints, trueInDebug, \ |
|
2070 "Generate extra debugging info for non-safepoints in nmethods") \ |
|
2071 \ |
|
2072 diagnostic(bool, DebugInlinedCalls, true, \ |
|
2073 "If false, restricts profiled locations to the root method only") \ |
|
2074 \ |
|
2075 product(bool, PrintVMOptions, trueInDebug, \ |
|
2076 "print VM flag settings") \ |
|
2077 \ |
|
2078 diagnostic(bool, SerializeVMOutput, true, \ |
|
2079 "Use a mutex to serialize output to tty and hotspot.log") \ |
|
2080 \ |
|
2081 diagnostic(bool, DisplayVMOutput, true, \ |
|
2082 "Display all VM output on the tty, independently of LogVMOutput") \ |
|
2083 \ |
|
2084 diagnostic(bool, LogVMOutput, trueInDebug, \ |
|
2085 "Save VM output to hotspot.log, or to LogFile") \ |
|
2086 \ |
|
2087 diagnostic(ccstr, LogFile, NULL, \ |
|
2088 "If LogVMOutput is on, save VM output to this file [hotspot.log]") \ |
|
2089 \ |
|
2090 product(ccstr, ErrorFile, NULL, \ |
|
2091 "If an error occurs, save the error data to this file " \ |
|
2092 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \ |
|
2093 \ |
|
2094 product(bool, DisplayVMOutputToStderr, false, \ |
|
2095 "If DisplayVMOutput is true, display all VM output to stderr") \ |
|
2096 \ |
|
2097 product(bool, DisplayVMOutputToStdout, false, \ |
|
2098 "If DisplayVMOutput is true, display all VM output to stdout") \ |
|
2099 \ |
|
2100 product(bool, UseHeavyMonitors, false, \ |
|
2101 "use heavyweight instead of lightweight Java monitors") \ |
|
2102 \ |
|
2103 notproduct(bool, PrintSymbolTableSizeHistogram, false, \ |
|
2104 "print histogram of the symbol table") \ |
|
2105 \ |
|
2106 notproduct(bool, ExitVMOnVerifyError, false, \ |
|
2107 "standard exit from VM if bytecode verify error " \ |
|
2108 "(only in debug mode)") \ |
|
2109 \ |
|
2110 notproduct(ccstr, AbortVMOnException, NULL, \ |
|
2111 "Call fatal if this exception is thrown. Example: " \ |
|
2112 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \ |
|
2113 \ |
|
2114 develop(bool, DebugVtables, false, \ |
|
2115 "add debugging code to vtable dispatch") \ |
|
2116 \ |
|
2117 develop(bool, PrintVtables, false, \ |
|
2118 "print vtables when printing klass") \ |
|
2119 \ |
|
2120 notproduct(bool, PrintVtableStats, false, \ |
|
2121 "print vtables stats at end of run") \ |
|
2122 \ |
|
2123 develop(bool, TraceCreateZombies, false, \ |
|
2124 "trace creation of zombie nmethods") \ |
|
2125 \ |
|
2126 notproduct(bool, IgnoreLockingAssertions, false, \ |
|
2127 "disable locking assertions (for speed)") \ |
|
2128 \ |
|
2129 notproduct(bool, VerifyLoopOptimizations, false, \ |
|
2130 "verify major loop optimizations") \ |
|
2131 \ |
|
2132 product(bool, RangeCheckElimination, true, \ |
|
2133 "Split loop iterations to eliminate range checks") \ |
|
2134 \ |
|
2135 develop_pd(bool, UncommonNullCast, \ |
|
2136 "track occurrences of null in casts; adjust compiler tactics") \ |
|
2137 \ |
|
2138 develop(bool, TypeProfileCasts, true, \ |
|
2139 "treat casts like calls for purposes of type profiling") \ |
|
2140 \ |
|
2141 develop(bool, MonomorphicArrayCheck, true, \ |
|
2142 "Uncommon-trap array store checks that require full type check") \ |
|
2143 \ |
|
2144 develop(bool, DelayCompilationDuringStartup, true, \ |
|
2145 "Delay invoking the compiler until main application class is " \ |
|
2146 "loaded") \ |
|
2147 \ |
|
2148 develop(bool, CompileTheWorld, false, \ |
|
2149 "Compile all methods in all classes in bootstrap class path " \ |
|
2150 "(stress test)") \ |
|
2151 \ |
|
2152 develop(bool, CompileTheWorldPreloadClasses, true, \ |
|
2153 "Preload all classes used by a class before start loading") \ |
|
2154 \ |
|
2155 notproduct(bool, CompileTheWorldIgnoreInitErrors, false, \ |
|
2156 "Compile all methods although class initializer failed") \ |
|
2157 \ |
|
2158 develop(bool, TraceIterativeGVN, false, \ |
|
2159 "Print progress during Iterative Global Value Numbering") \ |
|
2160 \ |
|
2161 develop(bool, FillDelaySlots, true, \ |
|
2162 "Fill delay slots (on SPARC only)") \ |
|
2163 \ |
|
2164 develop(bool, VerifyIterativeGVN, false, \ |
|
2165 "Verify Def-Use modifications during sparse Iterative Global " \ |
|
2166 "Value Numbering") \ |
|
2167 \ |
|
2168 notproduct(bool, TracePhaseCCP, false, \ |
|
2169 "Print progress during Conditional Constant Propagation") \ |
|
2170 \ |
|
2171 develop(bool, TimeLivenessAnalysis, false, \ |
|
2172 "Time computation of bytecode liveness analysis") \ |
|
2173 \ |
|
2174 develop(bool, TraceLivenessGen, false, \ |
|
2175 "Trace the generation of liveness analysis information") \ |
|
2176 \ |
|
2177 notproduct(bool, TraceLivenessQuery, false, \ |
|
2178 "Trace queries of liveness analysis information") \ |
|
2179 \ |
|
2180 notproduct(bool, CollectIndexSetStatistics, false, \ |
|
2181 "Collect information about IndexSets") \ |
|
2182 \ |
|
2183 develop(bool, PrintDominators, false, \ |
|
2184 "Print out dominator trees for GVN") \ |
|
2185 \ |
|
2186 develop(bool, UseLoopSafepoints, true, \ |
|
2187 "Generate Safepoint nodes in every loop") \ |
|
2188 \ |
|
2189 notproduct(bool, TraceCISCSpill, false, \ |
|
2190 "Trace allocators use of cisc spillable instructions") \ |
|
2191 \ |
|
2192 notproduct(bool, TraceSpilling, false, \ |
|
2193 "Trace spilling") \ |
|
2194 \ |
|
2195 develop(bool, DeutschShiffmanExceptions, true, \ |
|
2196 "Fast check to find exception handler for precisely typed " \ |
|
2197 "exceptions") \ |
|
2198 \ |
|
2199 product(bool, SplitIfBlocks, true, \ |
|
2200 "Clone compares and control flow through merge points to fold " \ |
|
2201 "some branches") \ |
|
2202 \ |
|
2203 develop(intx, FastAllocateSizeLimit, 128*K, \ |
|
2204 /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \ |
|
2205 "Inline allocations larger than this in doublewords must go slow")\ |
|
2206 \ |
|
2207 product(bool, AggressiveOpts, false, \ |
|
2208 "Enable aggressive optimizations - see arguments.cpp") \ |
|
2209 \ |
|
2210 /* statistics */ \ |
|
2211 develop(bool, UseVTune, false, \ |
|
2212 "enable support for Intel's VTune profiler") \ |
|
2213 \ |
|
2214 develop(bool, CountCompiledCalls, false, \ |
|
2215 "counts method invocations") \ |
|
2216 \ |
|
2217 notproduct(bool, CountRuntimeCalls, false, \ |
|
2218 "counts VM runtime calls") \ |
|
2219 \ |
|
2220 develop(bool, CountJNICalls, false, \ |
|
2221 "counts jni method invocations") \ |
|
2222 \ |
|
2223 notproduct(bool, CountJVMCalls, false, \ |
|
2224 "counts jvm method invocations") \ |
|
2225 \ |
|
2226 notproduct(bool, CountRemovableExceptions, false, \ |
|
2227 "count exceptions that could be replaced by branches due to " \ |
|
2228 "inlining") \ |
|
2229 \ |
|
2230 notproduct(bool, ICMissHistogram, false, \ |
|
2231 "produce histogram of IC misses") \ |
|
2232 \ |
|
2233 notproduct(bool, PrintClassStatistics, false, \ |
|
2234 "prints class statistics at end of run") \ |
|
2235 \ |
|
2236 notproduct(bool, PrintMethodStatistics, false, \ |
|
2237 "prints method statistics at end of run") \ |
|
2238 \ |
|
2239 /* interpreter */ \ |
|
2240 develop(bool, ClearInterpreterLocals, false, \ |
|
2241 "Always clear local variables of interpreter activations upon " \ |
|
2242 "entry") \ |
|
2243 \ |
|
2244 product_pd(bool, RewriteBytecodes, \ |
|
2245 "Allow rewriting of bytecodes (bytecodes are not immutable)") \ |
|
2246 \ |
|
2247 product_pd(bool, RewriteFrequentPairs, \ |
|
2248 "Rewrite frequently used bytecode pairs into a single bytecode") \ |
|
2249 \ |
|
2250 product(bool, PrintInterpreter, false, \ |
|
2251 "Prints the generated interpreter code") \ |
|
2252 \ |
|
2253 product(bool, UseInterpreter, true, \ |
|
2254 "Use interpreter for non-compiled methods") \ |
|
2255 \ |
|
2256 develop(bool, UseFastSignatureHandlers, true, \ |
|
2257 "Use fast signature handlers for native calls") \ |
|
2258 \ |
|
2259 develop(bool, UseV8InstrsOnly, false, \ |
|
2260 "Use SPARC-V8 Compliant instruction subset") \ |
|
2261 \ |
|
2262 product(bool, UseNiagaraInstrs, false, \ |
|
2263 "Use Niagara-efficient instruction subset") \ |
|
2264 \ |
|
2265 develop(bool, UseCASForSwap, false, \ |
|
2266 "Do not use swap instructions, but only CAS (in a loop) on SPARC")\ |
|
2267 \ |
|
2268 product(bool, UseLoopCounter, true, \ |
|
2269 "Increment invocation counter on backward branch") \ |
|
2270 \ |
|
2271 product(bool, UseFastEmptyMethods, true, \ |
|
2272 "Use fast method entry code for empty methods") \ |
|
2273 \ |
|
2274 product(bool, UseFastAccessorMethods, true, \ |
|
2275 "Use fast method entry code for accessor methods") \ |
|
2276 \ |
|
2277 product_pd(bool, UseOnStackReplacement, \ |
|
2278 "Use on stack replacement, calls runtime if invoc. counter " \ |
|
2279 "overflows in loop") \ |
|
2280 \ |
|
2281 notproduct(bool, TraceOnStackReplacement, false, \ |
|
2282 "Trace on stack replacement") \ |
|
2283 \ |
|
2284 develop(bool, PoisonOSREntry, true, \ |
|
2285 "Detect abnormal calls to OSR code") \ |
|
2286 \ |
|
2287 product_pd(bool, PreferInterpreterNativeStubs, \ |
|
2288 "Use always interpreter stubs for native methods invoked via " \ |
|
2289 "interpreter") \ |
|
2290 \ |
|
2291 develop(bool, CountBytecodes, false, \ |
|
2292 "Count number of bytecodes executed") \ |
|
2293 \ |
|
2294 develop(bool, PrintBytecodeHistogram, false, \ |
|
2295 "Print histogram of the executed bytecodes") \ |
|
2296 \ |
|
2297 develop(bool, PrintBytecodePairHistogram, false, \ |
|
2298 "Print histogram of the executed bytecode pairs") \ |
|
2299 \ |
|
2300 develop(bool, PrintSignatureHandlers, false, \ |
|
2301 "Print code generated for native method signature handlers") \ |
|
2302 \ |
|
2303 develop(bool, VerifyOops, false, \ |
|
2304 "Do plausibility checks for oops") \ |
|
2305 \ |
|
2306 develop(bool, CheckUnhandledOops, false, \ |
|
2307 "Check for unhandled oops in VM code") \ |
|
2308 \ |
|
2309 develop(bool, VerifyJNIFields, trueInDebug, \ |
|
2310 "Verify jfieldIDs for instance fields") \ |
|
2311 \ |
|
2312 notproduct(bool, VerifyJNIEnvThread, false, \ |
|
2313 "Verify JNIEnv.thread == Thread::current() when entering VM " \ |
|
2314 "from JNI") \ |
|
2315 \ |
|
2316 develop(bool, VerifyFPU, false, \ |
|
2317 "Verify FPU state (check for NaN's, etc.)") \ |
|
2318 \ |
|
2319 develop(bool, VerifyThread, false, \ |
|
2320 "Watch the thread register for corruption (SPARC only)") \ |
|
2321 \ |
|
2322 develop(bool, VerifyActivationFrameSize, false, \ |
|
2323 "Verify that activation frame didn't become smaller than its " \ |
|
2324 "minimal size") \ |
|
2325 \ |
|
2326 develop(bool, TraceFrequencyInlining, false, \ |
|
2327 "Trace frequency based inlining") \ |
|
2328 \ |
|
2329 notproduct(bool, TraceTypeProfile, false, \ |
|
2330 "Trace type profile") \ |
|
2331 \ |
|
2332 develop_pd(bool, InlineIntrinsics, \ |
|
2333 "Inline intrinsics that can be statically resolved") \ |
|
2334 \ |
|
2335 product_pd(bool, ProfileInterpreter, \ |
|
2336 "Profile at the bytecode level during interpretation") \ |
|
2337 \ |
|
2338 develop_pd(bool, ProfileTraps, \ |
|
2339 "Profile deoptimization traps at the bytecode level") \ |
|
2340 \ |
|
2341 product(intx, ProfileMaturityPercentage, 20, \ |
|
2342 "number of method invocations/branches (expressed as % of " \ |
|
2343 "CompileThreshold) before using the method's profile") \ |
|
2344 \ |
|
2345 develop(bool, PrintMethodData, false, \ |
|
2346 "Print the results of +ProfileInterpreter at end of run") \ |
|
2347 \ |
|
2348 develop(bool, VerifyDataPointer, trueInDebug, \ |
|
2349 "Verify the method data pointer during interpreter profiling") \ |
|
2350 \ |
|
2351 develop(bool, VerifyCompiledCode, false, \ |
|
2352 "Include miscellaneous runtime verifications in nmethod code; " \ |
|
2353 "off by default because it disturbs nmethod size heuristics.") \ |
|
2354 \ |
|
2355 \ |
|
2356 /* compilation */ \ |
|
2357 product(bool, UseCompiler, true, \ |
|
2358 "use compilation") \ |
|
2359 \ |
|
2360 develop(bool, TraceCompilationPolicy, false, \ |
|
2361 "Trace compilation policy") \ |
|
2362 \ |
|
2363 develop(bool, TimeCompilationPolicy, false, \ |
|
2364 "Time the compilation policy") \ |
|
2365 \ |
|
2366 product(bool, UseCounterDecay, true, \ |
|
2367 "adjust recompilation counters") \ |
|
2368 \ |
|
2369 develop(intx, CounterHalfLifeTime, 30, \ |
|
2370 "half-life time of invocation counters (in secs)") \ |
|
2371 \ |
|
2372 develop(intx, CounterDecayMinIntervalLength, 500, \ |
|
2373 "Min. ms. between invocation of CounterDecay") \ |
|
2374 \ |
|
2375 product(bool, AlwaysCompileLoopMethods, false, \ |
|
2376 "when using recompilation, never interpret methods " \ |
|
2377 "containing loops") \ |
|
2378 \ |
|
2379 product(bool, DontCompileHugeMethods, true, \ |
|
2380 "don't compile methods > HugeMethodLimit") \ |
|
2381 \ |
|
2382 /* Bytecode escape analysis estimation. */ \ |
|
2383 product(bool, EstimateArgEscape, true, \ |
|
2384 "Analyze bytecodes to estimate escape state of arguments") \ |
|
2385 \ |
|
2386 product(intx, BCEATraceLevel, 0, \ |
|
2387 "How much tracing to do of bytecode escape analysis estimates") \ |
|
2388 \ |
|
2389 product(intx, MaxBCEAEstimateLevel, 5, \ |
|
2390 "Maximum number of nested calls that are analyzed by BC EA.") \ |
|
2391 \ |
|
2392 product(intx, MaxBCEAEstimateSize, 150, \ |
|
2393 "Maximum bytecode size of a method to be analyzed by BC EA.") \ |
|
2394 \ |
|
2395 product(intx, AllocatePrefetchStyle, 1, \ |
|
2396 "0 = no prefetch, " \ |
|
2397 "1 = prefetch instructions for each allocation, " \ |
|
2398 "2 = use TLAB watermark to gate allocation prefetch") \ |
|
2399 \ |
|
2400 product(intx, AllocatePrefetchDistance, -1, \ |
|
2401 "Distance to prefetch ahead of allocation pointer") \ |
|
2402 \ |
|
2403 product(intx, AllocatePrefetchLines, 1, \ |
|
2404 "Number of lines to prefetch ahead of allocation pointer") \ |
|
2405 \ |
|
2406 product(intx, AllocatePrefetchStepSize, 16, \ |
|
2407 "Step size in bytes of sequential prefetch instructions") \ |
|
2408 \ |
|
2409 product(intx, AllocatePrefetchInstr, 0, \ |
|
2410 "Prefetch instruction to prefetch ahead of allocation pointer") \ |
|
2411 \ |
|
2412 product(intx, ReadPrefetchInstr, 0, \ |
|
2413 "Prefetch instruction to prefetch ahead") \ |
|
2414 \ |
|
2415 /* deoptimization */ \ |
|
2416 develop(bool, TraceDeoptimization, false, \ |
|
2417 "Trace deoptimization") \ |
|
2418 \ |
|
2419 develop(bool, DebugDeoptimization, false, \ |
|
2420 "Tracing various information while debugging deoptimization") \ |
|
2421 \ |
|
2422 product(intx, SelfDestructTimer, 0, \ |
|
2423 "Will cause VM to terminate after a given time (in minutes) " \ |
|
2424 "(0 means off)") \ |
|
2425 \ |
|
2426 product(intx, MaxJavaStackTraceDepth, 1024, \ |
|
2427 "Max. no. of lines in the stack trace for Java exceptions " \ |
|
2428 "(0 means all)") \ |
|
2429 \ |
|
2430 develop(intx, GuaranteedSafepointInterval, 1000, \ |
|
2431 "Guarantee a safepoint (at least) every so many milliseconds " \ |
|
2432 "(0 means none)") \ |
|
2433 \ |
|
2434 product(intx, SafepointTimeoutDelay, 10000, \ |
|
2435 "Delay in milliseconds for option SafepointTimeout") \ |
|
2436 \ |
|
2437 product(intx, NmethodSweepFraction, 4, \ |
|
2438 "Number of invocations of sweeper to cover all nmethods") \ |
|
2439 \ |
|
2440 notproduct(intx, MemProfilingInterval, 500, \ |
|
2441 "Time between each invocation of the MemProfiler") \ |
|
2442 \ |
|
2443 develop(intx, MallocCatchPtr, -1, \ |
|
2444 "Hit breakpoint when mallocing/freeing this pointer") \ |
|
2445 \ |
|
2446 notproduct(intx, AssertRepeat, 1, \ |
|
2447 "number of times to evaluate expression in assert " \ |
|
2448 "(to estimate overhead); only works with -DUSE_REPEATED_ASSERTS") \ |
|
2449 \ |
|
2450 notproduct(ccstrlist, SuppressErrorAt, "", \ |
|
2451 "List of assertions (file:line) to muzzle") \ |
|
2452 \ |
|
2453 notproduct(uintx, HandleAllocationLimit, 1024, \ |
|
2454 "Threshold for HandleMark allocation when +TraceHandleAllocation "\ |
|
2455 "is used") \ |
|
2456 \ |
|
2457 develop(uintx, TotalHandleAllocationLimit, 1024, \ |
|
2458 "Threshold for total handle allocation when " \ |
|
2459 "+TraceHandleAllocation is used") \ |
|
2460 \ |
|
2461 develop(intx, StackPrintLimit, 100, \ |
|
2462 "number of stack frames to print in VM-level stack dump") \ |
|
2463 \ |
|
2464 notproduct(intx, MaxElementPrintSize, 256, \ |
|
2465 "maximum number of elements to print") \ |
|
2466 \ |
|
2467 notproduct(intx, MaxSubklassPrintSize, 4, \ |
|
2468 "maximum number of subklasses to print when printing klass") \ |
|
2469 \ |
|
2470 develop(intx, MaxInlineLevel, 9, \ |
|
2471 "maximum number of nested calls that are inlined") \ |
|
2472 \ |
|
2473 develop(intx, MaxRecursiveInlineLevel, 1, \ |
|
2474 "maximum number of nested recursive calls that are inlined") \ |
|
2475 \ |
|
2476 develop(intx, InlineSmallCode, 1000, \ |
|
2477 "Only inline already compiled methods if their code size is " \ |
|
2478 "less than this") \ |
|
2479 \ |
|
2480 product(intx, MaxInlineSize, 35, \ |
|
2481 "maximum bytecode size of a method to be inlined") \ |
|
2482 \ |
|
2483 product_pd(intx, FreqInlineSize, \ |
|
2484 "maximum bytecode size of a frequent method to be inlined") \ |
|
2485 \ |
|
2486 develop(intx, MaxTrivialSize, 6, \ |
|
2487 "maximum bytecode size of a trivial method to be inlined") \ |
|
2488 \ |
|
2489 develop(intx, MinInliningThreshold, 250, \ |
|
2490 "min. invocation count a method needs to have to be inlined") \ |
|
2491 \ |
|
2492 develop(intx, AlignEntryCode, 4, \ |
|
2493 "aligns entry code to specified value (in bytes)") \ |
|
2494 \ |
|
2495 develop(intx, MethodHistogramCutoff, 100, \ |
|
2496 "cutoff value for method invoc. histogram (+CountCalls)") \ |
|
2497 \ |
|
2498 develop(intx, ProfilerNumberOfInterpretedMethods, 25, \ |
|
2499 "# of interpreted methods to show in profile") \ |
|
2500 \ |
|
2501 develop(intx, ProfilerNumberOfCompiledMethods, 25, \ |
|
2502 "# of compiled methods to show in profile") \ |
|
2503 \ |
|
2504 develop(intx, ProfilerNumberOfStubMethods, 25, \ |
|
2505 "# of stub methods to show in profile") \ |
|
2506 \ |
|
2507 develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \ |
|
2508 "# of runtime stub nodes to show in profile") \ |
|
2509 \ |
|
2510 product(intx, ProfileIntervalsTicks, 100, \ |
|
2511 "# of ticks between printing of interval profile " \ |
|
2512 "(+ProfileIntervals)") \ |
|
2513 \ |
|
2514 notproduct(intx, ScavengeALotInterval, 1, \ |
|
2515 "Interval between which scavenge will occur with +ScavengeALot") \ |
|
2516 \ |
|
2517 notproduct(intx, FullGCALotInterval, 1, \ |
|
2518 "Interval between which full gc will occur with +FullGCALot") \ |
|
2519 \ |
|
2520 notproduct(intx, FullGCALotStart, 0, \ |
|
2521 "For which invocation to start FullGCAlot") \ |
|
2522 \ |
|
2523 notproduct(intx, FullGCALotDummies, 32*K, \ |
|
2524 "Dummy object allocated with +FullGCALot, forcing all objects " \ |
|
2525 "to move") \ |
|
2526 \ |
|
2527 develop(intx, DontYieldALotInterval, 10, \ |
|
2528 "Interval between which yields will be dropped (milliseconds)") \ |
|
2529 \ |
|
2530 develop(intx, MinSleepInterval, 1, \ |
|
2531 "Minimum sleep() interval (milliseconds) when " \ |
|
2532 "ConvertSleepToYield is off (used for SOLARIS)") \ |
|
2533 \ |
|
2534 product(intx, EventLogLength, 2000, \ |
|
2535 "maximum nof events in event log") \ |
|
2536 \ |
|
2537 develop(intx, ProfilerPCTickThreshold, 15, \ |
|
2538 "Number of ticks in a PC buckets to be a hotspot") \ |
|
2539 \ |
|
2540 notproduct(intx, DeoptimizeALotInterval, 5, \ |
|
2541 "Number of exits until DeoptimizeALot kicks in") \ |
|
2542 \ |
|
2543 notproduct(intx, ZombieALotInterval, 5, \ |
|
2544 "Number of exits until ZombieALot kicks in") \ |
|
2545 \ |
|
2546 develop(bool, StressNonEntrant, false, \ |
|
2547 "Mark nmethods non-entrant at registration") \ |
|
2548 \ |
|
2549 diagnostic(intx, MallocVerifyInterval, 0, \ |
|
2550 "if non-zero, verify C heap after every N calls to " \ |
|
2551 "malloc/realloc/free") \ |
|
2552 \ |
|
2553 diagnostic(intx, MallocVerifyStart, 0, \ |
|
2554 "if non-zero, start verifying C heap after Nth call to " \ |
|
2555 "malloc/realloc/free") \ |
|
2556 \ |
|
2557 product(intx, TypeProfileWidth, 2, \ |
|
2558 "number of receiver types to record in call/cast profile") \ |
|
2559 \ |
|
2560 develop(intx, BciProfileWidth, 2, \ |
|
2561 "number of return bci's to record in ret profile") \ |
|
2562 \ |
|
2563 product(intx, PerMethodRecompilationCutoff, 400, \ |
|
2564 "After recompiling N times, stay in the interpreter (-1=>'Inf')") \ |
|
2565 \ |
|
2566 product(intx, PerBytecodeRecompilationCutoff, 100, \ |
|
2567 "Per-BCI limit on repeated recompilation (-1=>'Inf')") \ |
|
2568 \ |
|
2569 product(intx, PerMethodTrapLimit, 100, \ |
|
2570 "Limit on traps (of one kind) in a method (includes inlines)") \ |
|
2571 \ |
|
2572 product(intx, PerBytecodeTrapLimit, 4, \ |
|
2573 "Limit on traps (of one kind) at a particular BCI") \ |
|
2574 \ |
|
2575 develop(intx, FreqCountInvocations, 1, \ |
|
2576 "Scaling factor for branch frequencies (deprecated)") \ |
|
2577 \ |
|
2578 develop(intx, InlineFrequencyRatio, 20, \ |
|
2579 "Ratio of call site execution to caller method invocation") \ |
|
2580 \ |
|
2581 develop_pd(intx, InlineFrequencyCount, \ |
|
2582 "Count of call site execution necessary to trigger frequent " \ |
|
2583 "inlining") \ |
|
2584 \ |
|
2585 develop(intx, InlineThrowCount, 50, \ |
|
2586 "Force inlining of interpreted methods that throw this often") \ |
|
2587 \ |
|
2588 develop(intx, InlineThrowMaxSize, 200, \ |
|
2589 "Force inlining of throwing methods smaller than this") \ |
|
2590 \ |
|
2591 product(intx, AliasLevel, 3, \ |
|
2592 "0 for no aliasing, 1 for oop/field/static/array split, " \ |
|
2593 "2 for class split, 3 for unique instances") \ |
|
2594 \ |
|
2595 develop(bool, VerifyAliases, false, \ |
|
2596 "perform extra checks on the results of alias analysis") \ |
|
2597 \ |
|
2598 develop(intx, ProfilerNodeSize, 1024, \ |
|
2599 "Size in K to allocate for the Profile Nodes of each thread") \ |
|
2600 \ |
|
2601 develop(intx, V8AtomicOperationUnderLockSpinCount, 50, \ |
|
2602 "Number of times to spin wait on a v8 atomic operation lock") \ |
|
2603 \ |
|
2604 product(intx, ReadSpinIterations, 100, \ |
|
2605 "Number of read attempts before a yield (spin inner loop)") \ |
|
2606 \ |
|
2607 product_pd(intx, PreInflateSpin, \ |
|
2608 "Number of times to spin wait before inflation") \ |
|
2609 \ |
|
2610 product(intx, PreBlockSpin, 10, \ |
|
2611 "Number of times to spin in an inflated lock before going to " \ |
|
2612 "an OS lock") \ |
|
2613 \ |
|
2614 /* gc parameters */ \ |
|
2615 product(uintx, MaxHeapSize, ScaleForWordSize(64*M), \ |
|
2616 "Default maximum size for object heap (in bytes)") \ |
|
2617 \ |
|
2618 product_pd(uintx, NewSize, \ |
|
2619 "Default size of new generation (in bytes)") \ |
|
2620 \ |
|
2621 product(uintx, MaxNewSize, max_uintx, \ |
|
2622 "Maximum size of new generation (in bytes)") \ |
|
2623 \ |
|
2624 product(uintx, PretenureSizeThreshold, 0, \ |
|
2625 "Max size in bytes of objects allocated in DefNew generation") \ |
|
2626 \ |
|
2627 product_pd(uintx, TLABSize, \ |
|
2628 "Default (or starting) size of TLAB (in bytes)") \ |
|
2629 \ |
|
2630 product(uintx, MinTLABSize, 2*K, \ |
|
2631 "Minimum allowed TLAB size (in bytes)") \ |
|
2632 \ |
|
2633 product(uintx, TLABAllocationWeight, 35, \ |
|
2634 "Allocation averaging weight") \ |
|
2635 \ |
|
2636 product(uintx, TLABWasteTargetPercent, 1, \ |
|
2637 "Percentage of Eden that can be wasted") \ |
|
2638 \ |
|
2639 product(uintx, TLABRefillWasteFraction, 64, \ |
|
2640 "Max TLAB waste at a refill (internal fragmentation)") \ |
|
2641 \ |
|
2642 product(uintx, TLABWasteIncrement, 4, \ |
|
2643 "Increment allowed waste at slow allocation") \ |
|
2644 \ |
|
2645 product_pd(intx, SurvivorRatio, \ |
|
2646 "Ratio of eden/survivor space size") \ |
|
2647 \ |
|
2648 product_pd(intx, NewRatio, \ |
|
2649 "Ratio of new/old generation sizes") \ |
|
2650 \ |
|
2651 product(uintx, MaxLiveObjectEvacuationRatio, 100, \ |
|
2652 "Max percent of eden objects that will be live at scavenge") \ |
|
2653 \ |
|
2654 product_pd(uintx, NewSizeThreadIncrease, \ |
|
2655 "Additional size added to desired new generation size per " \ |
|
2656 "non-daemon thread (in bytes)") \ |
|
2657 \ |
|
2658 product(uintx, OldSize, ScaleForWordSize(4096*K), \ |
|
2659 "Default size of tenured generation (in bytes)") \ |
|
2660 \ |
|
2661 product_pd(uintx, PermSize, \ |
|
2662 "Default size of permanent generation (in bytes)") \ |
|
2663 \ |
|
2664 product_pd(uintx, MaxPermSize, \ |
|
2665 "Maximum size of permanent generation (in bytes)") \ |
|
2666 \ |
|
2667 product(uintx, MinHeapFreeRatio, 40, \ |
|
2668 "Min percentage of heap free after GC to avoid expansion") \ |
|
2669 \ |
|
2670 product(uintx, MaxHeapFreeRatio, 70, \ |
|
2671 "Max percentage of heap free after GC to avoid shrinking") \ |
|
2672 \ |
|
2673 product(intx, SoftRefLRUPolicyMSPerMB, 1000, \ |
|
2674 "Number of milliseconds per MB of free space in the heap") \ |
|
2675 \ |
|
2676 product(uintx, MinHeapDeltaBytes, ScaleForWordSize(128*K), \ |
|
2677 "Min change in heap space due to GC (in bytes)") \ |
|
2678 \ |
|
2679 product(uintx, MinPermHeapExpansion, ScaleForWordSize(256*K), \ |
|
2680 "Min expansion of permanent heap (in bytes)") \ |
|
2681 \ |
|
2682 product(uintx, MaxPermHeapExpansion, ScaleForWordSize(4*M), \ |
|
2683 "Max expansion of permanent heap without full GC (in bytes)") \ |
|
2684 \ |
|
2685 product(intx, QueuedAllocationWarningCount, 0, \ |
|
2686 "Number of times an allocation that queues behind a GC " \ |
|
2687 "will retry before printing a warning") \ |
|
2688 \ |
|
2689 diagnostic(uintx, VerifyGCStartAt, 0, \ |
|
2690 "GC invoke count where +VerifyBefore/AfterGC kicks in") \ |
|
2691 \ |
|
2692 diagnostic(intx, VerifyGCLevel, 0, \ |
|
2693 "Generation level at which to start +VerifyBefore/AfterGC") \ |
|
2694 \ |
|
2695 develop(uintx, ExitAfterGCNum, 0, \ |
|
2696 "If non-zero, exit after this GC.") \ |
|
2697 \ |
|
2698 product(intx, MaxTenuringThreshold, 15, \ |
|
2699 "Maximum value for tenuring threshold") \ |
|
2700 \ |
|
2701 product(intx, InitialTenuringThreshold, 7, \ |
|
2702 "Initial value for tenuring threshold") \ |
|
2703 \ |
|
2704 product(intx, TargetSurvivorRatio, 50, \ |
|
2705 "Desired percentage of survivor space used after scavenge") \ |
|
2706 \ |
|
2707 product(intx, MarkSweepDeadRatio, 5, \ |
|
2708 "Percentage (0-100) of the old gen allowed as dead wood." \ |
|
2709 "Serial mark sweep treats this as both the min and max value." \ |
|
2710 "CMS uses this value only if it falls back to mark sweep." \ |
|
2711 "Par compact uses a variable scale based on the density of the" \ |
|
2712 "generation and treats this as the max value when the heap is" \ |
|
2713 "either completely full or completely empty. Par compact also" \ |
|
2714 "has a smaller default value; see arguments.cpp.") \ |
|
2715 \ |
|
2716 product(intx, PermMarkSweepDeadRatio, 20, \ |
|
2717 "Percentage (0-100) of the perm gen allowed as dead wood." \ |
|
2718 "See MarkSweepDeadRatio for collector-specific comments.") \ |
|
2719 \ |
|
2720 product(intx, MarkSweepAlwaysCompactCount, 4, \ |
|
2721 "How often should we fully compact the heap (ignoring the dead " \ |
|
2722 "space parameters)") \ |
|
2723 \ |
|
2724 product(intx, PrintCMSStatistics, 0, \ |
|
2725 "Statistics for CMS") \ |
|
2726 \ |
|
2727 product(bool, PrintCMSInitiationStatistics, false, \ |
|
2728 "Statistics for initiating a CMS collection") \ |
|
2729 \ |
|
2730 product(intx, PrintFLSStatistics, 0, \ |
|
2731 "Statistics for CMS' FreeListSpace") \ |
|
2732 \ |
|
2733 product(intx, PrintFLSCensus, 0, \ |
|
2734 "Census for CMS' FreeListSpace") \ |
|
2735 \ |
|
2736 develop(uintx, GCExpandToAllocateDelayMillis, 0, \ |
|
2737 "Delay in ms between expansion and allocation") \ |
|
2738 \ |
|
2739 product(intx, DeferThrSuspendLoopCount, 4000, \ |
|
2740 "(Unstable) Number of times to iterate in safepoint loop " \ |
|
2741 " before blocking VM threads ") \ |
|
2742 \ |
|
2743 product(intx, DeferPollingPageLoopCount, -1, \ |
|
2744 "(Unsafe,Unstable) Number of iterations in safepoint loop " \ |
|
2745 "before changing safepoint polling page to RO ") \ |
|
2746 \ |
|
2747 product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \ |
|
2748 \ |
|
2749 product(bool, UseDepthFirstScavengeOrder, true, \ |
|
2750 "true: the scavenge order will be depth-first, " \ |
|
2751 "false: the scavenge order will be breadth-first") \ |
|
2752 \ |
|
2753 product(bool, PSChunkLargeArrays, true, \ |
|
2754 "true: process large arrays in chunks") \ |
|
2755 \ |
|
2756 product(uintx, GCDrainStackTargetSize, 64, \ |
|
2757 "how many entries we'll try to leave on the stack during " \ |
|
2758 "parallel GC") \ |
|
2759 \ |
|
2760 /* stack parameters */ \ |
|
2761 product_pd(intx, StackYellowPages, \ |
|
2762 "Number of yellow zone (recoverable overflows) pages") \ |
|
2763 \ |
|
2764 product_pd(intx, StackRedPages, \ |
|
2765 "Number of red zone (unrecoverable overflows) pages") \ |
|
2766 \ |
|
2767 product_pd(intx, StackShadowPages, \ |
|
2768 "Number of shadow zone (for overflow checking) pages" \ |
|
2769 " this should exceed the depth of the VM and native call stack") \ |
|
2770 \ |
|
2771 product_pd(intx, ThreadStackSize, \ |
|
2772 "Thread Stack Size (in Kbytes)") \ |
|
2773 \ |
|
2774 product_pd(intx, VMThreadStackSize, \ |
|
2775 "Non-Java Thread Stack Size (in Kbytes)") \ |
|
2776 \ |
|
2777 product_pd(intx, CompilerThreadStackSize, \ |
|
2778 "Compiler Thread Stack Size (in Kbytes)") \ |
|
2779 \ |
|
2780 develop_pd(uintx, JVMInvokeMethodSlack, \ |
|
2781 "Stack space (bytes) required for JVM_InvokeMethod to complete") \ |
|
2782 \ |
|
2783 product(uintx, ThreadSafetyMargin, 50*M, \ |
|
2784 "Thread safety margin is used on fixed-stack LinuxThreads (on " \ |
|
2785 "Linux/x86 only) to prevent heap-stack collision. Set to 0 to " \ |
|
2786 "disable this feature") \ |
|
2787 \ |
|
2788 /* code cache parameters */ \ |
|
2789 develop(uintx, CodeCacheSegmentSize, 64, \ |
|
2790 "Code cache segment size (in bytes) - smallest unit of " \ |
|
2791 "allocation") \ |
|
2792 \ |
|
2793 develop_pd(intx, CodeEntryAlignment, \ |
|
2794 "Code entry alignment for generated code (in bytes)") \ |
|
2795 \ |
|
2796 product_pd(uintx, InitialCodeCacheSize, \ |
|
2797 "Initial code cache size (in bytes)") \ |
|
2798 \ |
|
2799 product_pd(uintx, ReservedCodeCacheSize, \ |
|
2800 "Reserved code cache size (in bytes) - maximum code cache size") \ |
|
2801 \ |
|
2802 product(uintx, CodeCacheMinimumFreeSpace, 500*K, \ |
|
2803 "When less than X space left, we stop compiling.") \ |
|
2804 \ |
|
2805 product_pd(uintx, CodeCacheExpansionSize, \ |
|
2806 "Code cache expansion size (in bytes)") \ |
|
2807 \ |
|
2808 develop_pd(uintx, CodeCacheMinBlockLength, \ |
|
2809 "Minimum number of segments in a code cache block.") \ |
|
2810 \ |
|
2811 notproduct(bool, ExitOnFullCodeCache, false, \ |
|
2812 "Exit the VM if we fill the code cache.") \ |
|
2813 \ |
|
2814 /* interpreter debugging */ \ |
|
2815 develop(intx, BinarySwitchThreshold, 5, \ |
|
2816 "Minimal number of lookupswitch entries for rewriting to binary " \ |
|
2817 "switch") \ |
|
2818 \ |
|
2819 develop(intx, StopInterpreterAt, 0, \ |
|
2820 "Stops interpreter execution at specified bytecode number") \ |
|
2821 \ |
|
2822 develop(intx, TraceBytecodesAt, 0, \ |
|
2823 "Traces bytecodes starting with specified bytecode number") \ |
|
2824 \ |
|
2825 /* compiler interface */ \ |
|
2826 develop(intx, CIStart, 0, \ |
|
2827 "the id of the first compilation to permit") \ |
|
2828 \ |
|
2829 develop(intx, CIStop, -1, \ |
|
2830 "the id of the last compilation to permit") \ |
|
2831 \ |
|
2832 develop(intx, CIStartOSR, 0, \ |
|
2833 "the id of the first osr compilation to permit " \ |
|
2834 "(CICountOSR must be on)") \ |
|
2835 \ |
|
2836 develop(intx, CIStopOSR, -1, \ |
|
2837 "the id of the last osr compilation to permit " \ |
|
2838 "(CICountOSR must be on)") \ |
|
2839 \ |
|
2840 develop(intx, CIBreakAtOSR, -1, \ |
|
2841 "id of osr compilation to break at") \ |
|
2842 \ |
|
2843 develop(intx, CIBreakAt, -1, \ |
|
2844 "id of compilation to break at") \ |
|
2845 \ |
|
2846 product(ccstrlist, CompileOnly, "", \ |
|
2847 "List of methods (pkg/class.name) to restrict compilation to") \ |
|
2848 \ |
|
2849 product(ccstr, CompileCommandFile, NULL, \ |
|
2850 "Read compiler commands from this file [.hotspot_compiler]") \ |
|
2851 \ |
|
2852 product(ccstrlist, CompileCommand, "", \ |
|
2853 "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \ |
|
2854 \ |
|
2855 product(bool, CICompilerCountPerCPU, false, \ |
|
2856 "1 compiler thread for log(N CPUs)") \ |
|
2857 \ |
|
2858 develop(intx, CIFireOOMAt, -1, \ |
|
2859 "Fire OutOfMemoryErrors throughout CI for testing the compiler " \ |
|
2860 "(non-negative value throws OOM after this many CI accesses " \ |
|
2861 "in each compile)") \ |
|
2862 \ |
|
2863 develop(intx, CIFireOOMAtDelay, -1, \ |
|
2864 "Wait for this many CI accesses to occur in all compiles before " \ |
|
2865 "beginning to throw OutOfMemoryErrors in each compile") \ |
|
2866 \ |
|
2867 /* Priorities */ \ |
|
2868 product_pd(bool, UseThreadPriorities, "Use native thread priorities") \ |
|
2869 \ |
|
2870 product(intx, ThreadPriorityPolicy, 0, \ |
|
2871 "0 : Normal. "\ |
|
2872 " VM chooses priorities that are appropriate for normal "\ |
|
2873 " applications. On Solaris NORM_PRIORITY and above are mapped "\ |
|
2874 " to normal native priority. Java priorities below NORM_PRIORITY"\ |
|
2875 " map to lower native priority values. On Windows applications"\ |
|
2876 " are allowed to use higher native priorities. However, with "\ |
|
2877 " ThreadPriorityPolicy=0, VM will not use the highest possible"\ |
|
2878 " native priority, THREAD_PRIORITY_TIME_CRITICAL, as it may "\ |
|
2879 " interfere with system threads. On Linux thread priorities "\ |
|
2880 " are ignored because the OS does not support static priority "\ |
|
2881 " in SCHED_OTHER scheduling class which is the only choice for"\ |
|
2882 " non-root, non-realtime applications. "\ |
|
2883 "1 : Aggressive. "\ |
|
2884 " Java thread priorities map over to the entire range of "\ |
|
2885 " native thread priorities. Higher Java thread priorities map "\ |
|
2886 " to higher native thread priorities. This policy should be "\ |
|
2887 " used with care, as sometimes it can cause performance "\ |
|
2888 " degradation in the application and/or the entire system. On "\ |
|
2889 " Linux this policy requires root privilege.") \ |
|
2890 \ |
|
2891 product(bool, ThreadPriorityVerbose, false, \ |
|
2892 "print priority changes") \ |
|
2893 \ |
|
2894 product(intx, DefaultThreadPriority, -1, \ |
|
2895 "what native priority threads run at if not specified elsewhere (-1 means no change)") \ |
|
2896 \ |
|
2897 product(intx, CompilerThreadPriority, -1, \ |
|
2898 "what priority should compiler threads run at (-1 means no change)") \ |
|
2899 \ |
|
2900 product(intx, VMThreadPriority, -1, \ |
|
2901 "what priority should VM threads run at (-1 means no change)") \ |
|
2902 \ |
|
2903 product(bool, CompilerThreadHintNoPreempt, true, \ |
|
2904 "(Solaris only) Give compiler threads an extra quanta") \ |
|
2905 \ |
|
2906 product(bool, VMThreadHintNoPreempt, false, \ |
|
2907 "(Solaris only) Give VM thread an extra quanta") \ |
|
2908 \ |
|
2909 product(intx, JavaPriority1_To_OSPriority, -1, "Map Java priorities to OS priorities") \ |
|
2910 product(intx, JavaPriority2_To_OSPriority, -1, "Map Java priorities to OS priorities") \ |
|
2911 product(intx, JavaPriority3_To_OSPriority, -1, "Map Java priorities to OS priorities") \ |
|
2912 product(intx, JavaPriority4_To_OSPriority, -1, "Map Java priorities to OS priorities") \ |
|
2913 product(intx, JavaPriority5_To_OSPriority, -1, "Map Java priorities to OS priorities") \ |
|
2914 product(intx, JavaPriority6_To_OSPriority, -1, "Map Java priorities to OS priorities") \ |
|
2915 product(intx, JavaPriority7_To_OSPriority, -1, "Map Java priorities to OS priorities") \ |
|
2916 product(intx, JavaPriority8_To_OSPriority, -1, "Map Java priorities to OS priorities") \ |
|
2917 product(intx, JavaPriority9_To_OSPriority, -1, "Map Java priorities to OS priorities") \ |
|
2918 product(intx, JavaPriority10_To_OSPriority,-1, "Map Java priorities to OS priorities") \ |
|
2919 \ |
|
2920 /* compiler debugging */ \ |
|
2921 notproduct(intx, CompileTheWorldStartAt, 1, \ |
|
2922 "First class to consider when using +CompileTheWorld") \ |
|
2923 \ |
|
2924 notproduct(intx, CompileTheWorldStopAt, max_jint, \ |
|
2925 "Last class to consider when using +CompileTheWorld") \ |
|
2926 \ |
|
2927 develop(intx, NewCodeParameter, 0, \ |
|
2928 "Testing Only: Create a dedicated integer parameter before " \ |
|
2929 "putback") \ |
|
2930 \ |
|
2931 /* new oopmap storage allocation */ \ |
|
2932 develop(intx, MinOopMapAllocation, 8, \ |
|
2933 "Minimum number of OopMap entries in an OopMapSet") \ |
|
2934 \ |
|
2935 /* Background Compilation */ \ |
|
2936 develop(intx, LongCompileThreshold, 50, \ |
|
2937 "Used with +TraceLongCompiles") \ |
|
2938 \ |
|
2939 product(intx, StarvationMonitorInterval, 200, \ |
|
2940 "Pause between each check in ms") \ |
|
2941 \ |
|
2942 /* recompilation */ \ |
|
2943 product_pd(intx, CompileThreshold, \ |
|
2944 "number of interpreted method invocations before (re-)compiling") \ |
|
2945 \ |
|
2946 product_pd(intx, BackEdgeThreshold, \ |
|
2947 "Interpreter Back edge threshold at which an OSR compilation is invoked")\ |
|
2948 \ |
|
2949 product(intx, Tier1BytecodeLimit, 10, \ |
|
2950 "Must have at least this many bytecodes before tier1" \ |
|
2951 "invocation counters are used") \ |
|
2952 \ |
|
2953 product_pd(intx, Tier2CompileThreshold, \ |
|
2954 "threshold at which a tier 2 compilation is invoked") \ |
|
2955 \ |
|
2956 product_pd(intx, Tier2BackEdgeThreshold, \ |
|
2957 "Back edge threshold at which a tier 2 compilation is invoked") \ |
|
2958 \ |
|
2959 product_pd(intx, Tier3CompileThreshold, \ |
|
2960 "threshold at which a tier 3 compilation is invoked") \ |
|
2961 \ |
|
2962 product_pd(intx, Tier3BackEdgeThreshold, \ |
|
2963 "Back edge threshold at which a tier 3 compilation is invoked") \ |
|
2964 \ |
|
2965 product_pd(intx, Tier4CompileThreshold, \ |
|
2966 "threshold at which a tier 4 compilation is invoked") \ |
|
2967 \ |
|
2968 product_pd(intx, Tier4BackEdgeThreshold, \ |
|
2969 "Back edge threshold at which a tier 4 compilation is invoked") \ |
|
2970 \ |
|
2971 product_pd(bool, TieredCompilation, \ |
|
2972 "Enable two-tier compilation") \ |
|
2973 \ |
|
2974 product(bool, StressTieredRuntime, false, \ |
|
2975 "Alternate client and server compiler on compile requests") \ |
|
2976 \ |
|
2977 product_pd(intx, OnStackReplacePercentage, \ |
|
2978 "NON_TIERED number of method invocations/branches (expressed as %"\ |
|
2979 "of CompileThreshold) before (re-)compiling OSR code") \ |
|
2980 \ |
|
2981 product(intx, InterpreterProfilePercentage, 33, \ |
|
2982 "NON_TIERED number of method invocations/branches (expressed as %"\ |
|
2983 "of CompileThreshold) before profiling in the interpreter") \ |
|
2984 \ |
|
2985 develop(intx, MaxRecompilationSearchLength, 10, \ |
|
2986 "max. # frames to inspect searching for recompilee") \ |
|
2987 \ |
|
2988 develop(intx, MaxInterpretedSearchLength, 3, \ |
|
2989 "max. # interp. frames to skip when searching for recompilee") \ |
|
2990 \ |
|
2991 develop(intx, DesiredMethodLimit, 8000, \ |
|
2992 "desired max. method size (in bytecodes) after inlining") \ |
|
2993 \ |
|
2994 develop(intx, HugeMethodLimit, 8000, \ |
|
2995 "don't compile methods larger than this if " \ |
|
2996 "+DontCompileHugeMethods") \ |
|
2997 \ |
|
2998 /* New JDK 1.4 reflection implementation */ \ |
|
2999 \ |
|
3000 develop(bool, UseNewReflection, true, \ |
|
3001 "Temporary flag for transition to reflection based on dynamic " \ |
|
3002 "bytecode generation in 1.4; can no longer be turned off in 1.4 " \ |
|
3003 "JDK, and is unneeded in 1.3 JDK, but marks most places VM " \ |
|
3004 "changes were needed") \ |
|
3005 \ |
|
3006 develop(bool, VerifyReflectionBytecodes, false, \ |
|
3007 "Force verification of 1.4 reflection bytecodes. Does not work " \ |
|
3008 "in situations like that described in 4486457 or for " \ |
|
3009 "constructors generated for serialization, so can not be enabled "\ |
|
3010 "in product.") \ |
|
3011 \ |
|
3012 product(bool, ReflectionWrapResolutionErrors, true, \ |
|
3013 "Temporary flag for transition to AbstractMethodError wrapped " \ |
|
3014 "in InvocationTargetException. See 6531596") \ |
|
3015 \ |
|
3016 \ |
|
3017 develop(intx, FastSuperclassLimit, 8, \ |
|
3018 "Depth of hardwired instanceof accelerator array") \ |
|
3019 \ |
|
3020 /* Properties for Java libraries */ \ |
|
3021 \ |
|
3022 product(intx, MaxDirectMemorySize, -1, \ |
|
3023 "Maximum total size of NIO direct-buffer allocations") \ |
|
3024 \ |
|
3025 /* temporary developer defined flags */ \ |
|
3026 \ |
|
3027 diagnostic(bool, UseNewCode, false, \ |
|
3028 "Testing Only: Use the new version while testing") \ |
|
3029 \ |
|
3030 diagnostic(bool, UseNewCode2, false, \ |
|
3031 "Testing Only: Use the new version while testing") \ |
|
3032 \ |
|
3033 diagnostic(bool, UseNewCode3, false, \ |
|
3034 "Testing Only: Use the new version while testing") \ |
|
3035 \ |
|
3036 /* flags for performance data collection */ \ |
|
3037 \ |
|
3038 product(bool, UsePerfData, true, \ |
|
3039 "Flag to disable jvmstat instrumentation for performance testing" \ |
|
3040 "and problem isolation purposes.") \ |
|
3041 \ |
|
3042 product(bool, PerfDataSaveToFile, false, \ |
|
3043 "Save PerfData memory to hsperfdata_<pid> file on exit") \ |
|
3044 \ |
|
3045 product(ccstr, PerfDataSaveFile, NULL, \ |
|
3046 "Save PerfData memory to the specified absolute pathname," \ |
|
3047 "%p in the file name if present will be replaced by pid") \ |
|
3048 \ |
|
3049 product(intx, PerfDataSamplingInterval, 50 /*ms*/, \ |
|
3050 "Data sampling interval in milliseconds") \ |
|
3051 \ |
|
3052 develop(bool, PerfTraceDataCreation, false, \ |
|
3053 "Trace creation of Performance Data Entries") \ |
|
3054 \ |
|
3055 develop(bool, PerfTraceMemOps, false, \ |
|
3056 "Trace PerfMemory create/attach/detach calls") \ |
|
3057 \ |
|
3058 product(bool, PerfDisableSharedMem, false, \ |
|
3059 "Store performance data in standard memory") \ |
|
3060 \ |
|
3061 product(intx, PerfDataMemorySize, 32*K, \ |
|
3062 "Size of performance data memory region. Will be rounded " \ |
|
3063 "up to a multiple of the native os page size.") \ |
|
3064 \ |
|
3065 product(intx, PerfMaxStringConstLength, 1024, \ |
|
3066 "Maximum PerfStringConstant string length before truncation") \ |
|
3067 \ |
|
3068 product(bool, PerfAllowAtExitRegistration, false, \ |
|
3069 "Allow registration of atexit() methods") \ |
|
3070 \ |
|
3071 product(bool, PerfBypassFileSystemCheck, false, \ |
|
3072 "Bypass Win32 file system criteria checks (Windows Only)") \ |
|
3073 \ |
|
3074 product(intx, UnguardOnExecutionViolation, 0, \ |
|
3075 "Unguard page and retry on no-execute fault (Win32 only)" \ |
|
3076 "0=off, 1=conservative, 2=aggressive") \ |
|
3077 \ |
|
3078 /* Serviceability Support */ \ |
|
3079 \ |
|
3080 product(bool, ManagementServer, false, \ |
|
3081 "Create JMX Management Server") \ |
|
3082 \ |
|
3083 product(bool, DisableAttachMechanism, false, \ |
|
3084 "Disable mechanism that allows tools to attach to this VM") \ |
|
3085 \ |
|
3086 product(bool, StartAttachListener, false, \ |
|
3087 "Always start Attach Listener at VM startup") \ |
|
3088 \ |
|
3089 manageable(bool, PrintConcurrentLocks, false, \ |
|
3090 "Print java.util.concurrent locks in thread dump") \ |
|
3091 \ |
|
3092 /* Shared spaces */ \ |
|
3093 \ |
|
3094 product(bool, UseSharedSpaces, true, \ |
|
3095 "Use shared spaces in the permanent generation") \ |
|
3096 \ |
|
3097 product(bool, RequireSharedSpaces, false, \ |
|
3098 "Require shared spaces in the permanent generation") \ |
|
3099 \ |
|
3100 product(bool, ForceSharedSpaces, false, \ |
|
3101 "Require shared spaces in the permanent generation") \ |
|
3102 \ |
|
3103 product(bool, DumpSharedSpaces, false, \ |
|
3104 "Special mode: JVM reads a class list, loads classes, builds " \ |
|
3105 "shared spaces, and dumps the shared spaces to a file to be " \ |
|
3106 "used in future JVM runs.") \ |
|
3107 \ |
|
3108 product(bool, PrintSharedSpaces, false, \ |
|
3109 "Print usage of shared spaces") \ |
|
3110 \ |
|
3111 product(uintx, SharedDummyBlockSize, 512*M, \ |
|
3112 "Size of dummy block used to shift heap addresses (in bytes)") \ |
|
3113 \ |
|
3114 product(uintx, SharedReadWriteSize, 12*M, \ |
|
3115 "Size of read-write space in permanent generation (in bytes)") \ |
|
3116 \ |
|
3117 product(uintx, SharedReadOnlySize, 8*M, \ |
|
3118 "Size of read-only space in permanent generation (in bytes)") \ |
|
3119 \ |
|
3120 product(uintx, SharedMiscDataSize, 4*M, \ |
|
3121 "Size of the shared data area adjacent to the heap (in bytes)") \ |
|
3122 \ |
|
3123 product(uintx, SharedMiscCodeSize, 4*M, \ |
|
3124 "Size of the shared code area adjacent to the heap (in bytes)") \ |
|
3125 \ |
|
3126 diagnostic(bool, SharedOptimizeColdStart, true, \ |
|
3127 "At dump time, order shared objects to achieve better " \ |
|
3128 "cold startup time.") \ |
|
3129 \ |
|
3130 develop(intx, SharedOptimizeColdStartPolicy, 2, \ |
|
3131 "Reordering policy for SharedOptimizeColdStart " \ |
|
3132 "0=favor classload-time locality, 1=balanced, " \ |
|
3133 "2=favor runtime locality") \ |
|
3134 \ |
|
3135 diagnostic(bool, SharedSkipVerify, false, \ |
|
3136 "Skip assert() and verify() which page-in unwanted shared " \ |
|
3137 "objects. ") \ |
|
3138 \ |
|
3139 product(bool, TaggedStackInterpreter, false, \ |
|
3140 "Insert tags in interpreter execution stack for oopmap generaion")\ |
|
3141 \ |
|
3142 diagnostic(bool, PauseAtStartup, false, \ |
|
3143 "Causes the VM to pause at startup time and wait for the pause " \ |
|
3144 "file to be removed (default: ./vm.paused.<pid>)") \ |
|
3145 \ |
|
3146 diagnostic(ccstr, PauseAtStartupFile, NULL, \ |
|
3147 "The file to create and for whose removal to await when pausing " \ |
|
3148 "at startup. (default: ./vm.paused.<pid>)") \ |
|
3149 \ |
|
3150 product(bool, ExtendedDTraceProbes, false, \ |
|
3151 "Enable performance-impacting dtrace probes") \ |
|
3152 \ |
|
3153 product(bool, DTraceMethodProbes, false, \ |
|
3154 "Enable dtrace probes for method-entry and method-exit") \ |
|
3155 \ |
|
3156 product(bool, DTraceAllocProbes, false, \ |
|
3157 "Enable dtrace probes for object allocation") \ |
|
3158 \ |
|
3159 product(bool, DTraceMonitorProbes, false, \ |
|
3160 "Enable dtrace probes for monitor events") \ |
|
3161 \ |
|
3162 product(bool, RelaxAccessControlCheck, false, \ |
|
3163 "Relax the access control checks in the verifier") \ |
|
3164 \ |
|
3165 product(bool, UseVMInterruptibleIO, true, \ |
|
3166 "(Unstable, Solaris-specific) Thread interrupt before or with " \ |
|
3167 "EINTR for I/O operations results in OS_INTRPT") |
|
3168 |
|
3169 |
|
3170 /* |
|
3171 * Macros for factoring of globals |
|
3172 */ |
|
3173 |
|
3174 // Interface macros |
|
3175 #define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; |
|
3176 #define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name; |
|
3177 #define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name; |
|
3178 #define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name; |
|
3179 #define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name; |
|
3180 #ifdef PRODUCT |
|
3181 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) const type name = value; |
|
3182 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) const type name = pd_##name; |
|
3183 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) |
|
3184 #else |
|
3185 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name; |
|
3186 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name; |
|
3187 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name; |
|
3188 #endif |
|
3189 |
|
3190 // Implementation macros |
|
3191 #define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value; |
|
3192 #define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name; |
|
3193 #define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value; |
|
3194 #define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value; |
|
3195 #define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value; |
|
3196 #ifdef PRODUCT |
|
3197 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) /* flag name is constant */ |
|
3198 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) /* flag name is constant */ |
|
3199 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) |
|
3200 #else |
|
3201 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value; |
|
3202 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name; |
|
3203 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value; |
|
3204 #endif |
|
3205 |
|
3206 RUNTIME_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG, DECLARE_MANAGEABLE_FLAG, DECLARE_PRODUCT_RW_FLAG) |
|
3207 |
|
3208 RUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG) |