Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/globals.cpp @ 1080:7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
Reviewed-by: kvn, twisti
| author | never |
|---|---|
| date | Thu, 12 Nov 2009 09:24:21 -0800 |
| parents | ba7ea42fc66e |
| children | f62a22282a47 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 196 | 2 * Copyright 1997-2008 Sun Microsystems, Inc. All Rights Reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 # include "incls/_precompiled.incl" | |
| 26 # include "incls/_globals.cpp.incl" | |
| 27 | |
| 28 | |
| 29 RUNTIME_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PD_DEVELOPER_FLAG, \ | |
| 30 MATERIALIZE_PRODUCT_FLAG, MATERIALIZE_PD_PRODUCT_FLAG, \ | |
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31 MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_EXPERIMENTAL_FLAG, \ |
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32 MATERIALIZE_NOTPRODUCT_FLAG, \ |
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33 MATERIALIZE_MANAGEABLE_FLAG, MATERIALIZE_PRODUCT_RW_FLAG, \ |
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34 MATERIALIZE_LP64_PRODUCT_FLAG) |
| 0 | 35 |
| 36 RUNTIME_OS_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PD_DEVELOPER_FLAG, \ | |
| 37 MATERIALIZE_PRODUCT_FLAG, MATERIALIZE_PD_PRODUCT_FLAG, \ | |
| 38 MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_NOTPRODUCT_FLAG) | |
| 39 | |
| 40 bool Flag::is_unlocker() const { | |
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41 return strcmp(name, "UnlockDiagnosticVMOptions") == 0 || |
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42 strcmp(name, "UnlockExperimentalVMOptions") == 0; |
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43 |
| 0 | 44 } |
| 45 | |
| 46 bool Flag::is_unlocked() const { | |
| 47 if (strcmp(kind, "{diagnostic}") == 0) { | |
| 48 return UnlockDiagnosticVMOptions; | |
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49 } else if (strcmp(kind, "{experimental}") == 0 || |
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50 strcmp(kind, "{C2 experimental}") == 0) { |
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51 return UnlockExperimentalVMOptions; |
| 0 | 52 } else { |
| 53 return true; | |
| 54 } | |
| 55 } | |
| 56 | |
| 57 bool Flag::is_writeable() const { | |
| 58 return (strcmp(kind, "{manageable}") == 0 || strcmp(kind, "{product rw}") == 0); | |
| 59 } | |
| 60 | |
| 61 // All flags except "manageable" are assumed internal flags. | |
| 62 // Long term, we need to define a mechanism to specify which flags | |
| 63 // are external/stable and change this function accordingly. | |
| 64 bool Flag::is_external() const { | |
| 65 return (strcmp(kind, "{manageable}") == 0); | |
| 66 } | |
| 67 | |
| 68 // Length of format string (e.g. "%.1234s") for printing ccstr below | |
| 69 #define FORMAT_BUFFER_LEN 16 | |
| 70 | |
| 71 void Flag::print_on(outputStream* st) { | |
| 72 st->print("%5s %-35s %c= ", type, name, (origin != DEFAULT ? ':' : ' ')); | |
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73 if (is_bool()) st->print("%-16s", get_bool() ? "true" : "false"); |
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74 if (is_intx()) st->print("%-16ld", get_intx()); |
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75 if (is_uintx()) st->print("%-16lu", get_uintx()); |
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76 if (is_uint64_t()) st->print("%-16lu", get_uint64_t()); |
| 0 | 77 if (is_ccstr()) { |
| 78 const char* cp = get_ccstr(); | |
| 103 | 79 if (cp != NULL) { |
| 80 const char* eol; | |
| 81 while ((eol = strchr(cp, '\n')) != NULL) { | |
| 82 char format_buffer[FORMAT_BUFFER_LEN]; | |
| 83 size_t llen = pointer_delta(eol, cp, sizeof(char)); | |
| 84 jio_snprintf(format_buffer, FORMAT_BUFFER_LEN, | |
| 85 "%%." SIZE_FORMAT "s", llen); | |
| 86 st->print(format_buffer, cp); | |
| 87 st->cr(); | |
| 88 cp = eol+1; | |
| 89 st->print("%5s %-35s += ", "", name); | |
| 90 } | |
| 91 st->print("%-16s", cp); | |
| 0 | 92 } |
| 93 } | |
| 94 st->print(" %s", kind); | |
| 95 st->cr(); | |
| 96 } | |
| 97 | |
| 98 void Flag::print_as_flag(outputStream* st) { | |
| 99 if (is_bool()) { | |
| 100 st->print("-XX:%s%s", get_bool() ? "+" : "-", name); | |
| 101 } else if (is_intx()) { | |
| 102 st->print("-XX:%s=" INTX_FORMAT, name, get_intx()); | |
| 103 } else if (is_uintx()) { | |
| 104 st->print("-XX:%s=" UINTX_FORMAT, name, get_uintx()); | |
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105 } else if (is_uint64_t()) { |
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106 st->print("-XX:%s=" UINT64_FORMAT, name, get_uint64_t()); |
| 0 | 107 } else if (is_ccstr()) { |
| 108 st->print("-XX:%s=", name); | |
| 103 | 109 const char* cp = get_ccstr(); |
| 110 if (cp != NULL) { | |
| 111 // Need to turn embedded '\n's back into separate arguments | |
| 112 // Not so efficient to print one character at a time, | |
| 113 // but the choice is to do the transformation to a buffer | |
| 114 // and print that. And this need not be efficient. | |
| 115 for (; *cp != '\0'; cp += 1) { | |
| 116 switch (*cp) { | |
| 117 default: | |
| 118 st->print("%c", *cp); | |
| 119 break; | |
| 120 case '\n': | |
| 121 st->print(" -XX:%s=", name); | |
| 122 break; | |
| 123 } | |
| 0 | 124 } |
| 125 } | |
| 126 } else { | |
| 127 ShouldNotReachHere(); | |
| 128 } | |
| 129 } | |
| 130 | |
| 131 // 4991491 do not "optimize out" the was_set false values: omitting them | |
| 132 // tickles a Microsoft compiler bug causing flagTable to be malformed | |
| 133 | |
| 134 #define RUNTIME_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{product}", DEFAULT }, | |
| 135 #define RUNTIME_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{pd product}", DEFAULT }, | |
| 136 #define RUNTIME_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{diagnostic}", DEFAULT }, | |
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137 #define RUNTIME_EXPERIMENTAL_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{experimental}", DEFAULT }, |
| 0 | 138 #define RUNTIME_MANAGEABLE_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{manageable}", DEFAULT }, |
| 139 #define RUNTIME_PRODUCT_RW_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{product rw}", DEFAULT }, | |
| 140 | |
| 141 #ifdef PRODUCT | |
| 142 #define RUNTIME_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */ | |
| 143 #define RUNTIME_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */ | |
| 144 #define RUNTIME_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) | |
| 145 #else | |
| 146 #define RUNTIME_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "", DEFAULT }, | |
| 147 #define RUNTIME_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{pd}", DEFAULT }, | |
| 148 #define RUNTIME_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{notproduct}", DEFAULT }, | |
| 149 #endif | |
| 150 | |
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151 #ifdef _LP64 |
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152 #define RUNTIME_LP64_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{lp64_product}", DEFAULT }, |
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153 #else |
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154 #define RUNTIME_LP64_PRODUCT_FLAG_STRUCT(type, name, value, doc) /* flag is constant */ |
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155 #endif // _LP64 |
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156 |
| 0 | 157 #define C1_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C1 product}", DEFAULT }, |
| 158 #define C1_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{C1 pd product}", DEFAULT }, | |
| 159 #ifdef PRODUCT | |
| 160 #define C1_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */ | |
| 161 #define C1_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */ | |
| 162 #define C1_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) | |
| 163 #else | |
| 164 #define C1_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C1}", DEFAULT }, | |
| 165 #define C1_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{C1 pd}", DEFAULT }, | |
| 166 #define C1_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C1 notproduct}", DEFAULT }, | |
| 167 #endif | |
| 168 | |
| 169 | |
| 170 #define C2_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C2 product}", DEFAULT }, | |
| 171 #define C2_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{C2 pd product}", DEFAULT }, | |
| 172 #define C2_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C2 diagnostic}", DEFAULT }, | |
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173 #define C2_EXPERIMENTAL_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C2 experimental}", DEFAULT }, |
| 0 | 174 #ifdef PRODUCT |
| 175 #define C2_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */ | |
| 176 #define C2_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */ | |
| 177 #define C2_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) | |
| 178 #else | |
| 179 #define C2_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C2}", DEFAULT }, | |
| 180 #define C2_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{C2 pd}", DEFAULT }, | |
| 181 #define C2_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C2 notproduct}", DEFAULT }, | |
| 182 #endif | |
| 183 | |
| 184 | |
| 185 static Flag flagTable[] = { | |
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186 RUNTIME_FLAGS(RUNTIME_DEVELOP_FLAG_STRUCT, RUNTIME_PD_DEVELOP_FLAG_STRUCT, RUNTIME_PRODUCT_FLAG_STRUCT, RUNTIME_PD_PRODUCT_FLAG_STRUCT, RUNTIME_DIAGNOSTIC_FLAG_STRUCT, RUNTIME_EXPERIMENTAL_FLAG_STRUCT, RUNTIME_NOTPRODUCT_FLAG_STRUCT, RUNTIME_MANAGEABLE_FLAG_STRUCT, RUNTIME_PRODUCT_RW_FLAG_STRUCT, RUNTIME_LP64_PRODUCT_FLAG_STRUCT) |
| 0 | 187 RUNTIME_OS_FLAGS(RUNTIME_DEVELOP_FLAG_STRUCT, RUNTIME_PD_DEVELOP_FLAG_STRUCT, RUNTIME_PRODUCT_FLAG_STRUCT, RUNTIME_PD_PRODUCT_FLAG_STRUCT, RUNTIME_DIAGNOSTIC_FLAG_STRUCT, RUNTIME_NOTPRODUCT_FLAG_STRUCT) |
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188 #ifndef SERIALGC |
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189 G1_FLAGS(RUNTIME_DEVELOP_FLAG_STRUCT, RUNTIME_PD_DEVELOP_FLAG_STRUCT, RUNTIME_PRODUCT_FLAG_STRUCT, RUNTIME_PD_PRODUCT_FLAG_STRUCT, RUNTIME_DIAGNOSTIC_FLAG_STRUCT, RUNTIME_EXPERIMENTAL_FLAG_STRUCT, RUNTIME_NOTPRODUCT_FLAG_STRUCT, RUNTIME_MANAGEABLE_FLAG_STRUCT, RUNTIME_PRODUCT_RW_FLAG_STRUCT) |
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190 #endif // SERIALGC |
| 0 | 191 #ifdef COMPILER1 |
| 192 C1_FLAGS(C1_DEVELOP_FLAG_STRUCT, C1_PD_DEVELOP_FLAG_STRUCT, C1_PRODUCT_FLAG_STRUCT, C1_PD_PRODUCT_FLAG_STRUCT, C1_NOTPRODUCT_FLAG_STRUCT) | |
| 193 #endif | |
| 194 #ifdef COMPILER2 | |
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195 C2_FLAGS(C2_DEVELOP_FLAG_STRUCT, C2_PD_DEVELOP_FLAG_STRUCT, C2_PRODUCT_FLAG_STRUCT, C2_PD_PRODUCT_FLAG_STRUCT, C2_DIAGNOSTIC_FLAG_STRUCT, C2_EXPERIMENTAL_FLAG_STRUCT, C2_NOTPRODUCT_FLAG_STRUCT) |
| 0 | 196 #endif |
| 197 {0, NULL, NULL} | |
| 198 }; | |
| 199 | |
| 200 Flag* Flag::flags = flagTable; | |
| 201 size_t Flag::numFlags = (sizeof(flagTable) / sizeof(Flag)); | |
| 202 | |
| 203 inline bool str_equal(const char* s, char* q, size_t len) { | |
| 204 // s is null terminated, q is not! | |
| 205 if (strlen(s) != (unsigned int) len) return false; | |
| 206 return strncmp(s, q, len) == 0; | |
| 207 } | |
| 208 | |
| 209 Flag* Flag::find_flag(char* name, size_t length) { | |
| 210 for (Flag* current = &flagTable[0]; current->name; current++) { | |
| 211 if (str_equal(current->name, name, length)) { | |
| 212 if (!(current->is_unlocked() || current->is_unlocker())) { | |
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213 // disable use of diagnostic or experimental flags until they |
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214 // are explicitly unlocked |
| 0 | 215 return NULL; |
| 216 } | |
| 217 return current; | |
| 218 } | |
| 219 } | |
| 220 return NULL; | |
| 221 } | |
| 222 | |
| 223 // Returns the address of the index'th element | |
| 224 static Flag* address_of_flag(CommandLineFlagWithType flag) { | |
| 225 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); | |
| 226 return &Flag::flags[flag]; | |
| 227 } | |
| 228 | |
| 229 bool CommandLineFlagsEx::is_default(CommandLineFlag flag) { | |
| 230 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); | |
| 231 Flag* f = &Flag::flags[flag]; | |
| 232 return (f->origin == DEFAULT); | |
| 233 } | |
| 234 | |
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235 bool CommandLineFlagsEx::is_ergo(CommandLineFlag flag) { |
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236 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); |
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237 Flag* f = &Flag::flags[flag]; |
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238 return (f->origin == ERGONOMIC); |
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239 } |
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240 |
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241 bool CommandLineFlagsEx::is_cmdline(CommandLineFlag flag) { |
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242 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); |
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243 Flag* f = &Flag::flags[flag]; |
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244 return (f->origin == COMMAND_LINE); |
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245 } |
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246 |
| 0 | 247 bool CommandLineFlags::wasSetOnCmdline(const char* name, bool* value) { |
| 248 Flag* result = Flag::find_flag((char*)name, strlen(name)); | |
| 249 if (result == NULL) return false; | |
| 250 *value = (result->origin == COMMAND_LINE); | |
| 251 return true; | |
| 252 } | |
| 253 | |
| 254 bool CommandLineFlags::boolAt(char* name, size_t len, bool* value) { | |
| 255 Flag* result = Flag::find_flag(name, len); | |
| 256 if (result == NULL) return false; | |
| 257 if (!result->is_bool()) return false; | |
| 258 *value = result->get_bool(); | |
| 259 return true; | |
| 260 } | |
| 261 | |
| 262 bool CommandLineFlags::boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin) { | |
| 263 Flag* result = Flag::find_flag(name, len); | |
| 264 if (result == NULL) return false; | |
| 265 if (!result->is_bool()) return false; | |
| 266 bool old_value = result->get_bool(); | |
| 267 result->set_bool(*value); | |
| 268 *value = old_value; | |
| 269 result->origin = origin; | |
| 270 return true; | |
| 271 } | |
| 272 | |
| 273 void CommandLineFlagsEx::boolAtPut(CommandLineFlagWithType flag, bool value, FlagValueOrigin origin) { | |
| 274 Flag* faddr = address_of_flag(flag); | |
| 275 guarantee(faddr != NULL && faddr->is_bool(), "wrong flag type"); | |
| 276 faddr->set_bool(value); | |
| 277 faddr->origin = origin; | |
| 278 } | |
| 279 | |
| 280 bool CommandLineFlags::intxAt(char* name, size_t len, intx* value) { | |
| 281 Flag* result = Flag::find_flag(name, len); | |
| 282 if (result == NULL) return false; | |
| 283 if (!result->is_intx()) return false; | |
| 284 *value = result->get_intx(); | |
| 285 return true; | |
| 286 } | |
| 287 | |
| 288 bool CommandLineFlags::intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin) { | |
| 289 Flag* result = Flag::find_flag(name, len); | |
| 290 if (result == NULL) return false; | |
| 291 if (!result->is_intx()) return false; | |
| 292 intx old_value = result->get_intx(); | |
| 293 result->set_intx(*value); | |
| 294 *value = old_value; | |
| 295 result->origin = origin; | |
| 296 return true; | |
| 297 } | |
| 298 | |
| 299 void CommandLineFlagsEx::intxAtPut(CommandLineFlagWithType flag, intx value, FlagValueOrigin origin) { | |
| 300 Flag* faddr = address_of_flag(flag); | |
| 301 guarantee(faddr != NULL && faddr->is_intx(), "wrong flag type"); | |
| 302 faddr->set_intx(value); | |
| 303 faddr->origin = origin; | |
| 304 } | |
| 305 | |
| 306 bool CommandLineFlags::uintxAt(char* name, size_t len, uintx* value) { | |
| 307 Flag* result = Flag::find_flag(name, len); | |
| 308 if (result == NULL) return false; | |
| 309 if (!result->is_uintx()) return false; | |
| 310 *value = result->get_uintx(); | |
| 311 return true; | |
| 312 } | |
| 313 | |
| 314 bool CommandLineFlags::uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin) { | |
| 315 Flag* result = Flag::find_flag(name, len); | |
| 316 if (result == NULL) return false; | |
| 317 if (!result->is_uintx()) return false; | |
| 318 uintx old_value = result->get_uintx(); | |
| 319 result->set_uintx(*value); | |
| 320 *value = old_value; | |
| 321 result->origin = origin; | |
| 322 return true; | |
| 323 } | |
| 324 | |
| 325 void CommandLineFlagsEx::uintxAtPut(CommandLineFlagWithType flag, uintx value, FlagValueOrigin origin) { | |
| 326 Flag* faddr = address_of_flag(flag); | |
| 327 guarantee(faddr != NULL && faddr->is_uintx(), "wrong flag type"); | |
| 328 faddr->set_uintx(value); | |
| 329 faddr->origin = origin; | |
| 330 } | |
| 331 | |
| 1064 | 332 bool CommandLineFlags::uint64_tAt(char* name, size_t len, uint64_t* value) { |
| 333 Flag* result = Flag::find_flag(name, len); | |
| 334 if (result == NULL) return false; | |
| 335 if (!result->is_uint64_t()) return false; | |
| 336 *value = result->get_uint64_t(); | |
| 337 return true; | |
| 338 } | |
| 339 | |
| 340 bool CommandLineFlags::uint64_tAtPut(char* name, size_t len, uint64_t* value, FlagValueOrigin origin) { | |
| 341 Flag* result = Flag::find_flag(name, len); | |
| 342 if (result == NULL) return false; | |
| 343 if (!result->is_uint64_t()) return false; | |
| 344 uint64_t old_value = result->get_uint64_t(); | |
| 345 result->set_uint64_t(*value); | |
| 346 *value = old_value; | |
| 347 result->origin = origin; | |
| 348 return true; | |
| 349 } | |
| 350 | |
| 351 void CommandLineFlagsEx::uint64_tAtPut(CommandLineFlagWithType flag, uint64_t value, FlagValueOrigin origin) { | |
| 352 Flag* faddr = address_of_flag(flag); | |
| 353 guarantee(faddr != NULL && faddr->is_uint64_t(), "wrong flag type"); | |
| 354 faddr->set_uint64_t(value); | |
| 355 faddr->origin = origin; | |
| 356 } | |
| 357 | |
| 0 | 358 bool CommandLineFlags::doubleAt(char* name, size_t len, double* value) { |
| 359 Flag* result = Flag::find_flag(name, len); | |
| 360 if (result == NULL) return false; | |
| 361 if (!result->is_double()) return false; | |
| 362 *value = result->get_double(); | |
| 363 return true; | |
| 364 } | |
| 365 | |
| 366 bool CommandLineFlags::doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin) { | |
| 367 Flag* result = Flag::find_flag(name, len); | |
| 368 if (result == NULL) return false; | |
| 369 if (!result->is_double()) return false; | |
| 370 double old_value = result->get_double(); | |
| 371 result->set_double(*value); | |
| 372 *value = old_value; | |
| 373 result->origin = origin; | |
| 374 return true; | |
| 375 } | |
| 376 | |
| 377 void CommandLineFlagsEx::doubleAtPut(CommandLineFlagWithType flag, double value, FlagValueOrigin origin) { | |
| 378 Flag* faddr = address_of_flag(flag); | |
| 379 guarantee(faddr != NULL && faddr->is_double(), "wrong flag type"); | |
| 380 faddr->set_double(value); | |
| 381 faddr->origin = origin; | |
| 382 } | |
| 383 | |
| 384 bool CommandLineFlags::ccstrAt(char* name, size_t len, ccstr* value) { | |
| 385 Flag* result = Flag::find_flag(name, len); | |
| 386 if (result == NULL) return false; | |
| 387 if (!result->is_ccstr()) return false; | |
| 388 *value = result->get_ccstr(); | |
| 389 return true; | |
| 390 } | |
| 391 | |
| 392 // Contract: Flag will make private copy of the incoming value. | |
| 393 // Outgoing value is always malloc-ed, and caller MUST call free. | |
| 394 bool CommandLineFlags::ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin) { | |
| 395 Flag* result = Flag::find_flag(name, len); | |
| 396 if (result == NULL) return false; | |
| 397 if (!result->is_ccstr()) return false; | |
| 398 ccstr old_value = result->get_ccstr(); | |
|
370
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399 char* new_value = NULL; |
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400 if (*value != NULL) { |
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401 new_value = NEW_C_HEAP_ARRAY(char, strlen(*value)+1); |
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402 strcpy(new_value, *value); |
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403 } |
| 0 | 404 result->set_ccstr(new_value); |
| 405 if (result->origin == DEFAULT && old_value != NULL) { | |
| 406 // Prior value is NOT heap allocated, but was a literal constant. | |
| 407 char* old_value_to_free = NEW_C_HEAP_ARRAY(char, strlen(old_value)+1); | |
| 408 strcpy(old_value_to_free, old_value); | |
| 409 old_value = old_value_to_free; | |
| 410 } | |
| 411 *value = old_value; | |
| 412 result->origin = origin; | |
| 413 return true; | |
| 414 } | |
| 415 | |
| 416 // Contract: Flag will make private copy of the incoming value. | |
| 417 void CommandLineFlagsEx::ccstrAtPut(CommandLineFlagWithType flag, ccstr value, FlagValueOrigin origin) { | |
| 418 Flag* faddr = address_of_flag(flag); | |
| 419 guarantee(faddr != NULL && faddr->is_ccstr(), "wrong flag type"); | |
| 420 ccstr old_value = faddr->get_ccstr(); | |
| 421 char* new_value = NEW_C_HEAP_ARRAY(char, strlen(value)+1); | |
| 422 strcpy(new_value, value); | |
| 423 faddr->set_ccstr(new_value); | |
| 424 if (faddr->origin != DEFAULT && old_value != NULL) { | |
| 425 // Prior value is heap allocated so free it. | |
| 426 FREE_C_HEAP_ARRAY(char, old_value); | |
| 427 } | |
| 428 faddr->origin = origin; | |
| 429 } | |
| 430 | |
| 431 extern "C" { | |
| 432 static int compare_flags(const void* void_a, const void* void_b) { | |
| 433 return strcmp((*((Flag**) void_a))->name, (*((Flag**) void_b))->name); | |
| 434 } | |
| 435 } | |
| 436 | |
| 437 void CommandLineFlags::printSetFlags() { | |
| 438 // Print which flags were set on the command line | |
| 439 // note: this method is called before the thread structure is in place | |
| 440 // which means resource allocation cannot be used. | |
| 441 | |
| 442 // Compute size | |
| 443 int length= 0; | |
| 444 while (flagTable[length].name != NULL) length++; | |
| 445 | |
| 446 // Sort | |
| 447 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length); | |
| 448 for (int index = 0; index < length; index++) { | |
| 449 array[index] = &flagTable[index]; | |
| 450 } | |
| 451 qsort(array, length, sizeof(Flag*), compare_flags); | |
| 452 | |
| 453 // Print | |
| 454 for (int i = 0; i < length; i++) { | |
| 455 if (array[i]->origin /* naked field! */) { | |
| 456 array[i]->print_as_flag(tty); | |
| 457 tty->print(" "); | |
| 458 } | |
| 459 } | |
| 460 tty->cr(); | |
| 461 FREE_C_HEAP_ARRAY(Flag*, array); | |
| 462 } | |
| 463 | |
| 464 #ifndef PRODUCT | |
| 465 | |
| 466 | |
| 467 void CommandLineFlags::verify() { | |
| 468 assert(Arguments::check_vm_args_consistency(), "Some flag settings conflict"); | |
| 469 } | |
| 470 | |
| 471 void CommandLineFlags::printFlags() { | |
| 472 // Print the flags sorted by name | |
| 473 // note: this method is called before the thread structure is in place | |
| 474 // which means resource allocation cannot be used. | |
| 475 | |
| 476 // Compute size | |
| 477 int length= 0; | |
| 478 while (flagTable[length].name != NULL) length++; | |
| 479 | |
| 480 // Sort | |
| 481 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length); | |
| 482 for (int index = 0; index < length; index++) { | |
| 483 array[index] = &flagTable[index]; | |
| 484 } | |
| 485 qsort(array, length, sizeof(Flag*), compare_flags); | |
| 486 | |
| 487 // Print | |
| 488 tty->print_cr("[Global flags]"); | |
| 489 for (int i = 0; i < length; i++) { | |
| 490 if (array[i]->is_unlocked()) { | |
| 491 array[i]->print_on(tty); | |
| 492 } | |
| 493 } | |
| 494 FREE_C_HEAP_ARRAY(Flag*, array); | |
| 495 } | |
| 496 | |
| 497 #endif |