Mon, 23 Jun 2008 14:11:12 -0700
6708714: Optimize long LShift on 32-bits x86
Summary: For small (1-3 bits) left long shifts in 32-bits VM use sets of add+addc instructions instead of shld+shl on new AMD cpus.
Reviewed-by: never
Contributed-by: shrinivas.joshi@amd.com
duke@435 | 1 | /* |
duke@435 | 2 | * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | # include "incls/_precompiled.incl" |
duke@435 | 26 | # include "incls/_globals.cpp.incl" |
duke@435 | 27 | |
duke@435 | 28 | |
duke@435 | 29 | RUNTIME_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PD_DEVELOPER_FLAG, \ |
duke@435 | 30 | MATERIALIZE_PRODUCT_FLAG, MATERIALIZE_PD_PRODUCT_FLAG, \ |
duke@435 | 31 | MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_NOTPRODUCT_FLAG, \ |
coleenp@548 | 32 | MATERIALIZE_MANAGEABLE_FLAG, MATERIALIZE_PRODUCT_RW_FLAG, \ |
coleenp@548 | 33 | MATERIALIZE_LP64_PRODUCT_FLAG) |
duke@435 | 34 | |
duke@435 | 35 | RUNTIME_OS_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PD_DEVELOPER_FLAG, \ |
duke@435 | 36 | MATERIALIZE_PRODUCT_FLAG, MATERIALIZE_PD_PRODUCT_FLAG, \ |
duke@435 | 37 | MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_NOTPRODUCT_FLAG) |
duke@435 | 38 | |
duke@435 | 39 | bool Flag::is_unlocker() const { |
duke@435 | 40 | return strcmp(name, "UnlockDiagnosticVMOptions") == 0; |
duke@435 | 41 | } |
duke@435 | 42 | |
duke@435 | 43 | bool Flag::is_unlocked() const { |
duke@435 | 44 | if (strcmp(kind, "{diagnostic}") == 0) { |
duke@435 | 45 | return UnlockDiagnosticVMOptions; |
duke@435 | 46 | } else { |
duke@435 | 47 | return true; |
duke@435 | 48 | } |
duke@435 | 49 | } |
duke@435 | 50 | |
duke@435 | 51 | bool Flag::is_writeable() const { |
duke@435 | 52 | return (strcmp(kind, "{manageable}") == 0 || strcmp(kind, "{product rw}") == 0); |
duke@435 | 53 | } |
duke@435 | 54 | |
duke@435 | 55 | // All flags except "manageable" are assumed internal flags. |
duke@435 | 56 | // Long term, we need to define a mechanism to specify which flags |
duke@435 | 57 | // are external/stable and change this function accordingly. |
duke@435 | 58 | bool Flag::is_external() const { |
duke@435 | 59 | return (strcmp(kind, "{manageable}") == 0); |
duke@435 | 60 | } |
duke@435 | 61 | |
duke@435 | 62 | // Length of format string (e.g. "%.1234s") for printing ccstr below |
duke@435 | 63 | #define FORMAT_BUFFER_LEN 16 |
duke@435 | 64 | |
duke@435 | 65 | void Flag::print_on(outputStream* st) { |
duke@435 | 66 | st->print("%5s %-35s %c= ", type, name, (origin != DEFAULT ? ':' : ' ')); |
duke@435 | 67 | if (is_bool()) st->print("%-16s", get_bool() ? "true" : "false"); |
duke@435 | 68 | if (is_intx()) st->print("%-16ld", get_intx()); |
duke@435 | 69 | if (is_uintx()) st->print("%-16lu", get_uintx()); |
duke@435 | 70 | if (is_ccstr()) { |
duke@435 | 71 | const char* cp = get_ccstr(); |
never@538 | 72 | if (cp != NULL) { |
never@538 | 73 | const char* eol; |
never@538 | 74 | while ((eol = strchr(cp, '\n')) != NULL) { |
never@538 | 75 | char format_buffer[FORMAT_BUFFER_LEN]; |
never@538 | 76 | size_t llen = pointer_delta(eol, cp, sizeof(char)); |
never@538 | 77 | jio_snprintf(format_buffer, FORMAT_BUFFER_LEN, |
never@538 | 78 | "%%." SIZE_FORMAT "s", llen); |
never@538 | 79 | st->print(format_buffer, cp); |
never@538 | 80 | st->cr(); |
never@538 | 81 | cp = eol+1; |
never@538 | 82 | st->print("%5s %-35s += ", "", name); |
never@538 | 83 | } |
never@538 | 84 | st->print("%-16s", cp); |
duke@435 | 85 | } |
duke@435 | 86 | } |
duke@435 | 87 | st->print(" %s", kind); |
duke@435 | 88 | st->cr(); |
duke@435 | 89 | } |
duke@435 | 90 | |
duke@435 | 91 | void Flag::print_as_flag(outputStream* st) { |
duke@435 | 92 | if (is_bool()) { |
duke@435 | 93 | st->print("-XX:%s%s", get_bool() ? "+" : "-", name); |
duke@435 | 94 | } else if (is_intx()) { |
duke@435 | 95 | st->print("-XX:%s=" INTX_FORMAT, name, get_intx()); |
duke@435 | 96 | } else if (is_uintx()) { |
duke@435 | 97 | st->print("-XX:%s=" UINTX_FORMAT, name, get_uintx()); |
duke@435 | 98 | } else if (is_ccstr()) { |
duke@435 | 99 | st->print("-XX:%s=", name); |
never@538 | 100 | const char* cp = get_ccstr(); |
never@538 | 101 | if (cp != NULL) { |
never@538 | 102 | // Need to turn embedded '\n's back into separate arguments |
never@538 | 103 | // Not so efficient to print one character at a time, |
never@538 | 104 | // but the choice is to do the transformation to a buffer |
never@538 | 105 | // and print that. And this need not be efficient. |
never@538 | 106 | for (; *cp != '\0'; cp += 1) { |
never@538 | 107 | switch (*cp) { |
never@538 | 108 | default: |
never@538 | 109 | st->print("%c", *cp); |
never@538 | 110 | break; |
never@538 | 111 | case '\n': |
never@538 | 112 | st->print(" -XX:%s=", name); |
never@538 | 113 | break; |
never@538 | 114 | } |
duke@435 | 115 | } |
duke@435 | 116 | } |
duke@435 | 117 | } else { |
duke@435 | 118 | ShouldNotReachHere(); |
duke@435 | 119 | } |
duke@435 | 120 | } |
duke@435 | 121 | |
duke@435 | 122 | // 4991491 do not "optimize out" the was_set false values: omitting them |
duke@435 | 123 | // tickles a Microsoft compiler bug causing flagTable to be malformed |
duke@435 | 124 | |
duke@435 | 125 | #define RUNTIME_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{product}", DEFAULT }, |
duke@435 | 126 | #define RUNTIME_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{pd product}", DEFAULT }, |
duke@435 | 127 | #define RUNTIME_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{diagnostic}", DEFAULT }, |
duke@435 | 128 | #define RUNTIME_MANAGEABLE_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{manageable}", DEFAULT }, |
duke@435 | 129 | #define RUNTIME_PRODUCT_RW_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{product rw}", DEFAULT }, |
duke@435 | 130 | |
duke@435 | 131 | #ifdef PRODUCT |
duke@435 | 132 | #define RUNTIME_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */ |
duke@435 | 133 | #define RUNTIME_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */ |
duke@435 | 134 | #define RUNTIME_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) |
duke@435 | 135 | #else |
duke@435 | 136 | #define RUNTIME_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "", DEFAULT }, |
duke@435 | 137 | #define RUNTIME_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{pd}", DEFAULT }, |
duke@435 | 138 | #define RUNTIME_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{notproduct}", DEFAULT }, |
duke@435 | 139 | #endif |
duke@435 | 140 | |
coleenp@548 | 141 | #ifdef _LP64 |
coleenp@548 | 142 | #define RUNTIME_LP64_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{lp64_product}", DEFAULT }, |
coleenp@548 | 143 | #else |
coleenp@548 | 144 | #define RUNTIME_LP64_PRODUCT_FLAG_STRUCT(type, name, value, doc) /* flag is constant */ |
coleenp@548 | 145 | #endif // _LP64 |
coleenp@548 | 146 | |
duke@435 | 147 | #define C1_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C1 product}", DEFAULT }, |
duke@435 | 148 | #define C1_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{C1 pd product}", DEFAULT }, |
duke@435 | 149 | #ifdef PRODUCT |
duke@435 | 150 | #define C1_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */ |
duke@435 | 151 | #define C1_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */ |
duke@435 | 152 | #define C1_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) |
duke@435 | 153 | #else |
duke@435 | 154 | #define C1_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C1}", DEFAULT }, |
duke@435 | 155 | #define C1_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{C1 pd}", DEFAULT }, |
duke@435 | 156 | #define C1_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C1 notproduct}", DEFAULT }, |
duke@435 | 157 | #endif |
duke@435 | 158 | |
duke@435 | 159 | |
duke@435 | 160 | #define C2_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C2 product}", DEFAULT }, |
duke@435 | 161 | #define C2_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{C2 pd product}", DEFAULT }, |
duke@435 | 162 | #define C2_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C2 diagnostic}", DEFAULT }, |
duke@435 | 163 | #ifdef PRODUCT |
duke@435 | 164 | #define C2_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */ |
duke@435 | 165 | #define C2_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */ |
duke@435 | 166 | #define C2_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) |
duke@435 | 167 | #else |
duke@435 | 168 | #define C2_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C2}", DEFAULT }, |
duke@435 | 169 | #define C2_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{C2 pd}", DEFAULT }, |
duke@435 | 170 | #define C2_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C2 notproduct}", DEFAULT }, |
duke@435 | 171 | #endif |
duke@435 | 172 | |
duke@435 | 173 | |
duke@435 | 174 | static Flag flagTable[] = { |
coleenp@548 | 175 | 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_NOTPRODUCT_FLAG_STRUCT, RUNTIME_MANAGEABLE_FLAG_STRUCT, RUNTIME_PRODUCT_RW_FLAG_STRUCT, RUNTIME_LP64_PRODUCT_FLAG_STRUCT) |
duke@435 | 176 | 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) |
duke@435 | 177 | #ifdef COMPILER1 |
duke@435 | 178 | C1_FLAGS(C1_DEVELOP_FLAG_STRUCT, C1_PD_DEVELOP_FLAG_STRUCT, C1_PRODUCT_FLAG_STRUCT, C1_PD_PRODUCT_FLAG_STRUCT, C1_NOTPRODUCT_FLAG_STRUCT) |
duke@435 | 179 | #endif |
duke@435 | 180 | #ifdef COMPILER2 |
duke@435 | 181 | 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_NOTPRODUCT_FLAG_STRUCT) |
duke@435 | 182 | #endif |
duke@435 | 183 | {0, NULL, NULL} |
duke@435 | 184 | }; |
duke@435 | 185 | |
duke@435 | 186 | Flag* Flag::flags = flagTable; |
duke@435 | 187 | size_t Flag::numFlags = (sizeof(flagTable) / sizeof(Flag)); |
duke@435 | 188 | |
duke@435 | 189 | inline bool str_equal(const char* s, char* q, size_t len) { |
duke@435 | 190 | // s is null terminated, q is not! |
duke@435 | 191 | if (strlen(s) != (unsigned int) len) return false; |
duke@435 | 192 | return strncmp(s, q, len) == 0; |
duke@435 | 193 | } |
duke@435 | 194 | |
duke@435 | 195 | Flag* Flag::find_flag(char* name, size_t length) { |
duke@435 | 196 | for (Flag* current = &flagTable[0]; current->name; current++) { |
duke@435 | 197 | if (str_equal(current->name, name, length)) { |
duke@435 | 198 | if (!(current->is_unlocked() || current->is_unlocker())) { |
duke@435 | 199 | // disable use of diagnostic flags until they are unlocked |
duke@435 | 200 | return NULL; |
duke@435 | 201 | } |
duke@435 | 202 | return current; |
duke@435 | 203 | } |
duke@435 | 204 | } |
duke@435 | 205 | return NULL; |
duke@435 | 206 | } |
duke@435 | 207 | |
duke@435 | 208 | // Returns the address of the index'th element |
duke@435 | 209 | static Flag* address_of_flag(CommandLineFlagWithType flag) { |
duke@435 | 210 | assert((size_t)flag < Flag::numFlags, "bad command line flag index"); |
duke@435 | 211 | return &Flag::flags[flag]; |
duke@435 | 212 | } |
duke@435 | 213 | |
duke@435 | 214 | bool CommandLineFlagsEx::is_default(CommandLineFlag flag) { |
duke@435 | 215 | assert((size_t)flag < Flag::numFlags, "bad command line flag index"); |
duke@435 | 216 | Flag* f = &Flag::flags[flag]; |
duke@435 | 217 | return (f->origin == DEFAULT); |
duke@435 | 218 | } |
duke@435 | 219 | |
jmasa@448 | 220 | bool CommandLineFlagsEx::is_ergo(CommandLineFlag flag) { |
jmasa@448 | 221 | assert((size_t)flag < Flag::numFlags, "bad command line flag index"); |
jmasa@448 | 222 | Flag* f = &Flag::flags[flag]; |
jmasa@448 | 223 | return (f->origin == ERGONOMIC); |
jmasa@448 | 224 | } |
jmasa@448 | 225 | |
jmasa@448 | 226 | bool CommandLineFlagsEx::is_cmdline(CommandLineFlag flag) { |
jmasa@448 | 227 | assert((size_t)flag < Flag::numFlags, "bad command line flag index"); |
jmasa@448 | 228 | Flag* f = &Flag::flags[flag]; |
jmasa@448 | 229 | return (f->origin == COMMAND_LINE); |
jmasa@448 | 230 | } |
jmasa@448 | 231 | |
duke@435 | 232 | bool CommandLineFlags::wasSetOnCmdline(const char* name, bool* value) { |
duke@435 | 233 | Flag* result = Flag::find_flag((char*)name, strlen(name)); |
duke@435 | 234 | if (result == NULL) return false; |
duke@435 | 235 | *value = (result->origin == COMMAND_LINE); |
duke@435 | 236 | return true; |
duke@435 | 237 | } |
duke@435 | 238 | |
duke@435 | 239 | bool CommandLineFlags::boolAt(char* name, size_t len, bool* value) { |
duke@435 | 240 | Flag* result = Flag::find_flag(name, len); |
duke@435 | 241 | if (result == NULL) return false; |
duke@435 | 242 | if (!result->is_bool()) return false; |
duke@435 | 243 | *value = result->get_bool(); |
duke@435 | 244 | return true; |
duke@435 | 245 | } |
duke@435 | 246 | |
duke@435 | 247 | bool CommandLineFlags::boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin) { |
duke@435 | 248 | Flag* result = Flag::find_flag(name, len); |
duke@435 | 249 | if (result == NULL) return false; |
duke@435 | 250 | if (!result->is_bool()) return false; |
duke@435 | 251 | bool old_value = result->get_bool(); |
duke@435 | 252 | result->set_bool(*value); |
duke@435 | 253 | *value = old_value; |
duke@435 | 254 | result->origin = origin; |
duke@435 | 255 | return true; |
duke@435 | 256 | } |
duke@435 | 257 | |
duke@435 | 258 | void CommandLineFlagsEx::boolAtPut(CommandLineFlagWithType flag, bool value, FlagValueOrigin origin) { |
duke@435 | 259 | Flag* faddr = address_of_flag(flag); |
duke@435 | 260 | guarantee(faddr != NULL && faddr->is_bool(), "wrong flag type"); |
duke@435 | 261 | faddr->set_bool(value); |
duke@435 | 262 | faddr->origin = origin; |
duke@435 | 263 | } |
duke@435 | 264 | |
duke@435 | 265 | bool CommandLineFlags::intxAt(char* name, size_t len, intx* value) { |
duke@435 | 266 | Flag* result = Flag::find_flag(name, len); |
duke@435 | 267 | if (result == NULL) return false; |
duke@435 | 268 | if (!result->is_intx()) return false; |
duke@435 | 269 | *value = result->get_intx(); |
duke@435 | 270 | return true; |
duke@435 | 271 | } |
duke@435 | 272 | |
duke@435 | 273 | bool CommandLineFlags::intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin) { |
duke@435 | 274 | Flag* result = Flag::find_flag(name, len); |
duke@435 | 275 | if (result == NULL) return false; |
duke@435 | 276 | if (!result->is_intx()) return false; |
duke@435 | 277 | intx old_value = result->get_intx(); |
duke@435 | 278 | result->set_intx(*value); |
duke@435 | 279 | *value = old_value; |
duke@435 | 280 | result->origin = origin; |
duke@435 | 281 | return true; |
duke@435 | 282 | } |
duke@435 | 283 | |
duke@435 | 284 | void CommandLineFlagsEx::intxAtPut(CommandLineFlagWithType flag, intx value, FlagValueOrigin origin) { |
duke@435 | 285 | Flag* faddr = address_of_flag(flag); |
duke@435 | 286 | guarantee(faddr != NULL && faddr->is_intx(), "wrong flag type"); |
duke@435 | 287 | faddr->set_intx(value); |
duke@435 | 288 | faddr->origin = origin; |
duke@435 | 289 | } |
duke@435 | 290 | |
duke@435 | 291 | bool CommandLineFlags::uintxAt(char* name, size_t len, uintx* value) { |
duke@435 | 292 | Flag* result = Flag::find_flag(name, len); |
duke@435 | 293 | if (result == NULL) return false; |
duke@435 | 294 | if (!result->is_uintx()) return false; |
duke@435 | 295 | *value = result->get_uintx(); |
duke@435 | 296 | return true; |
duke@435 | 297 | } |
duke@435 | 298 | |
duke@435 | 299 | bool CommandLineFlags::uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin) { |
duke@435 | 300 | Flag* result = Flag::find_flag(name, len); |
duke@435 | 301 | if (result == NULL) return false; |
duke@435 | 302 | if (!result->is_uintx()) return false; |
duke@435 | 303 | uintx old_value = result->get_uintx(); |
duke@435 | 304 | result->set_uintx(*value); |
duke@435 | 305 | *value = old_value; |
duke@435 | 306 | result->origin = origin; |
duke@435 | 307 | return true; |
duke@435 | 308 | } |
duke@435 | 309 | |
duke@435 | 310 | void CommandLineFlagsEx::uintxAtPut(CommandLineFlagWithType flag, uintx value, FlagValueOrigin origin) { |
duke@435 | 311 | Flag* faddr = address_of_flag(flag); |
duke@435 | 312 | guarantee(faddr != NULL && faddr->is_uintx(), "wrong flag type"); |
duke@435 | 313 | faddr->set_uintx(value); |
duke@435 | 314 | faddr->origin = origin; |
duke@435 | 315 | } |
duke@435 | 316 | |
duke@435 | 317 | bool CommandLineFlags::doubleAt(char* name, size_t len, double* value) { |
duke@435 | 318 | Flag* result = Flag::find_flag(name, len); |
duke@435 | 319 | if (result == NULL) return false; |
duke@435 | 320 | if (!result->is_double()) return false; |
duke@435 | 321 | *value = result->get_double(); |
duke@435 | 322 | return true; |
duke@435 | 323 | } |
duke@435 | 324 | |
duke@435 | 325 | bool CommandLineFlags::doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin) { |
duke@435 | 326 | Flag* result = Flag::find_flag(name, len); |
duke@435 | 327 | if (result == NULL) return false; |
duke@435 | 328 | if (!result->is_double()) return false; |
duke@435 | 329 | double old_value = result->get_double(); |
duke@435 | 330 | result->set_double(*value); |
duke@435 | 331 | *value = old_value; |
duke@435 | 332 | result->origin = origin; |
duke@435 | 333 | return true; |
duke@435 | 334 | } |
duke@435 | 335 | |
duke@435 | 336 | void CommandLineFlagsEx::doubleAtPut(CommandLineFlagWithType flag, double value, FlagValueOrigin origin) { |
duke@435 | 337 | Flag* faddr = address_of_flag(flag); |
duke@435 | 338 | guarantee(faddr != NULL && faddr->is_double(), "wrong flag type"); |
duke@435 | 339 | faddr->set_double(value); |
duke@435 | 340 | faddr->origin = origin; |
duke@435 | 341 | } |
duke@435 | 342 | |
duke@435 | 343 | bool CommandLineFlags::ccstrAt(char* name, size_t len, ccstr* value) { |
duke@435 | 344 | Flag* result = Flag::find_flag(name, len); |
duke@435 | 345 | if (result == NULL) return false; |
duke@435 | 346 | if (!result->is_ccstr()) return false; |
duke@435 | 347 | *value = result->get_ccstr(); |
duke@435 | 348 | return true; |
duke@435 | 349 | } |
duke@435 | 350 | |
duke@435 | 351 | // Contract: Flag will make private copy of the incoming value. |
duke@435 | 352 | // Outgoing value is always malloc-ed, and caller MUST call free. |
duke@435 | 353 | bool CommandLineFlags::ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin) { |
duke@435 | 354 | Flag* result = Flag::find_flag(name, len); |
duke@435 | 355 | if (result == NULL) return false; |
duke@435 | 356 | if (!result->is_ccstr()) return false; |
duke@435 | 357 | ccstr old_value = result->get_ccstr(); |
duke@435 | 358 | char* new_value = NEW_C_HEAP_ARRAY(char, strlen(*value)+1); |
duke@435 | 359 | strcpy(new_value, *value); |
duke@435 | 360 | result->set_ccstr(new_value); |
duke@435 | 361 | if (result->origin == DEFAULT && old_value != NULL) { |
duke@435 | 362 | // Prior value is NOT heap allocated, but was a literal constant. |
duke@435 | 363 | char* old_value_to_free = NEW_C_HEAP_ARRAY(char, strlen(old_value)+1); |
duke@435 | 364 | strcpy(old_value_to_free, old_value); |
duke@435 | 365 | old_value = old_value_to_free; |
duke@435 | 366 | } |
duke@435 | 367 | *value = old_value; |
duke@435 | 368 | result->origin = origin; |
duke@435 | 369 | return true; |
duke@435 | 370 | } |
duke@435 | 371 | |
duke@435 | 372 | // Contract: Flag will make private copy of the incoming value. |
duke@435 | 373 | void CommandLineFlagsEx::ccstrAtPut(CommandLineFlagWithType flag, ccstr value, FlagValueOrigin origin) { |
duke@435 | 374 | Flag* faddr = address_of_flag(flag); |
duke@435 | 375 | guarantee(faddr != NULL && faddr->is_ccstr(), "wrong flag type"); |
duke@435 | 376 | ccstr old_value = faddr->get_ccstr(); |
duke@435 | 377 | char* new_value = NEW_C_HEAP_ARRAY(char, strlen(value)+1); |
duke@435 | 378 | strcpy(new_value, value); |
duke@435 | 379 | faddr->set_ccstr(new_value); |
duke@435 | 380 | if (faddr->origin != DEFAULT && old_value != NULL) { |
duke@435 | 381 | // Prior value is heap allocated so free it. |
duke@435 | 382 | FREE_C_HEAP_ARRAY(char, old_value); |
duke@435 | 383 | } |
duke@435 | 384 | faddr->origin = origin; |
duke@435 | 385 | } |
duke@435 | 386 | |
duke@435 | 387 | extern "C" { |
duke@435 | 388 | static int compare_flags(const void* void_a, const void* void_b) { |
duke@435 | 389 | return strcmp((*((Flag**) void_a))->name, (*((Flag**) void_b))->name); |
duke@435 | 390 | } |
duke@435 | 391 | } |
duke@435 | 392 | |
duke@435 | 393 | void CommandLineFlags::printSetFlags() { |
duke@435 | 394 | // Print which flags were set on the command line |
duke@435 | 395 | // note: this method is called before the thread structure is in place |
duke@435 | 396 | // which means resource allocation cannot be used. |
duke@435 | 397 | |
duke@435 | 398 | // Compute size |
duke@435 | 399 | int length= 0; |
duke@435 | 400 | while (flagTable[length].name != NULL) length++; |
duke@435 | 401 | |
duke@435 | 402 | // Sort |
duke@435 | 403 | Flag** array = NEW_C_HEAP_ARRAY(Flag*, length); |
duke@435 | 404 | for (int index = 0; index < length; index++) { |
duke@435 | 405 | array[index] = &flagTable[index]; |
duke@435 | 406 | } |
duke@435 | 407 | qsort(array, length, sizeof(Flag*), compare_flags); |
duke@435 | 408 | |
duke@435 | 409 | |
duke@435 | 410 | for (int i = 0; i < length; i++) { |
duke@435 | 411 | if (array[i]->origin /* naked field! */) { |
duke@435 | 412 | array[i]->print_as_flag(tty); |
duke@435 | 413 | tty->print(" "); |
duke@435 | 414 | } |
duke@435 | 415 | } |
duke@435 | 416 | tty->cr(); |
duke@435 | 417 | FREE_C_HEAP_ARRAY(Flag*, array); |
duke@435 | 418 | } |
duke@435 | 419 | |
duke@435 | 420 | #ifndef PRODUCT |
duke@435 | 421 | |
duke@435 | 422 | |
duke@435 | 423 | void CommandLineFlags::verify() { |
duke@435 | 424 | assert(Arguments::check_vm_args_consistency(), "Some flag settings conflict"); |
duke@435 | 425 | } |
duke@435 | 426 | |
duke@435 | 427 | void CommandLineFlags::printFlags() { |
duke@435 | 428 | // Print the flags sorted by name |
duke@435 | 429 | // note: this method is called before the thread structure is in place |
duke@435 | 430 | // which means resource allocation cannot be used. |
duke@435 | 431 | |
duke@435 | 432 | // Compute size |
duke@435 | 433 | int length= 0; |
duke@435 | 434 | while (flagTable[length].name != NULL) length++; |
duke@435 | 435 | |
duke@435 | 436 | // Sort |
duke@435 | 437 | Flag** array = NEW_C_HEAP_ARRAY(Flag*, length); |
duke@435 | 438 | for (int index = 0; index < length; index++) { |
duke@435 | 439 | array[index] = &flagTable[index]; |
duke@435 | 440 | } |
duke@435 | 441 | qsort(array, length, sizeof(Flag*), compare_flags); |
duke@435 | 442 | |
duke@435 | 443 | |
duke@435 | 444 | tty->print_cr("[Global flags]"); |
duke@435 | 445 | for (int i = 0; i < length; i++) { |
duke@435 | 446 | if (array[i]->is_unlocked()) { |
duke@435 | 447 | array[i]->print_on(tty); |
duke@435 | 448 | } |
duke@435 | 449 | } |
duke@435 | 450 | FREE_C_HEAP_ARRAY(Flag*, array); |
duke@435 | 451 | } |
duke@435 | 452 | |
duke@435 | 453 | #endif |