1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/runtime/globals.cpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,867 @@
1.4 +/*
1.5 + * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#include "precompiled.hpp"
1.29 +#include "memory/allocation.inline.hpp"
1.30 +#include "oops/oop.inline.hpp"
1.31 +#include "runtime/arguments.hpp"
1.32 +#include "runtime/globals.hpp"
1.33 +#include "runtime/globals_extension.hpp"
1.34 +#include "utilities/ostream.hpp"
1.35 +#include "utilities/macros.hpp"
1.36 +#include "utilities/top.hpp"
1.37 +#include "trace/tracing.hpp"
1.38 +#if INCLUDE_ALL_GCS
1.39 +#include "gc_implementation/g1/g1_globals.hpp"
1.40 +#endif // INCLUDE_ALL_GCS
1.41 +#ifdef COMPILER1
1.42 +#include "c1/c1_globals.hpp"
1.43 +#endif
1.44 +#ifdef COMPILER2
1.45 +#include "opto/c2_globals.hpp"
1.46 +#endif
1.47 +#ifdef SHARK
1.48 +#include "shark/shark_globals.hpp"
1.49 +#endif
1.50 +
1.51 +PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
1.52 +
1.53 +RUNTIME_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PD_DEVELOPER_FLAG, \
1.54 + MATERIALIZE_PRODUCT_FLAG, MATERIALIZE_PD_PRODUCT_FLAG, \
1.55 + MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_EXPERIMENTAL_FLAG, \
1.56 + MATERIALIZE_NOTPRODUCT_FLAG, \
1.57 + MATERIALIZE_MANAGEABLE_FLAG, MATERIALIZE_PRODUCT_RW_FLAG, \
1.58 + MATERIALIZE_LP64_PRODUCT_FLAG)
1.59 +
1.60 +RUNTIME_OS_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PD_DEVELOPER_FLAG, \
1.61 + MATERIALIZE_PRODUCT_FLAG, MATERIALIZE_PD_PRODUCT_FLAG, \
1.62 + MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_NOTPRODUCT_FLAG)
1.63 +
1.64 +ARCH_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PRODUCT_FLAG, \
1.65 + MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_EXPERIMENTAL_FLAG, \
1.66 + MATERIALIZE_NOTPRODUCT_FLAG)
1.67 +
1.68 +MATERIALIZE_FLAGS_EXT
1.69 +
1.70 +
1.71 +static bool is_product_build() {
1.72 +#ifdef PRODUCT
1.73 + return true;
1.74 +#else
1.75 + return false;
1.76 +#endif
1.77 +}
1.78 +
1.79 +void Flag::check_writable() {
1.80 + if (is_constant_in_binary()) {
1.81 + fatal(err_msg("flag is constant: %s", _name));
1.82 + }
1.83 +}
1.84 +
1.85 +bool Flag::is_bool() const {
1.86 + return strcmp(_type, "bool") == 0;
1.87 +}
1.88 +
1.89 +bool Flag::get_bool() const {
1.90 + return *((bool*) _addr);
1.91 +}
1.92 +
1.93 +void Flag::set_bool(bool value) {
1.94 + check_writable();
1.95 + *((bool*) _addr) = value;
1.96 +}
1.97 +
1.98 +bool Flag::is_intx() const {
1.99 + return strcmp(_type, "intx") == 0;
1.100 +}
1.101 +
1.102 +intx Flag::get_intx() const {
1.103 + return *((intx*) _addr);
1.104 +}
1.105 +
1.106 +void Flag::set_intx(intx value) {
1.107 + check_writable();
1.108 + *((intx*) _addr) = value;
1.109 +}
1.110 +
1.111 +bool Flag::is_uintx() const {
1.112 + return strcmp(_type, "uintx") == 0;
1.113 +}
1.114 +
1.115 +uintx Flag::get_uintx() const {
1.116 + return *((uintx*) _addr);
1.117 +}
1.118 +
1.119 +void Flag::set_uintx(uintx value) {
1.120 + check_writable();
1.121 + *((uintx*) _addr) = value;
1.122 +}
1.123 +
1.124 +bool Flag::is_uint64_t() const {
1.125 + return strcmp(_type, "uint64_t") == 0;
1.126 +}
1.127 +
1.128 +uint64_t Flag::get_uint64_t() const {
1.129 + return *((uint64_t*) _addr);
1.130 +}
1.131 +
1.132 +void Flag::set_uint64_t(uint64_t value) {
1.133 + check_writable();
1.134 + *((uint64_t*) _addr) = value;
1.135 +}
1.136 +
1.137 +bool Flag::is_double() const {
1.138 + return strcmp(_type, "double") == 0;
1.139 +}
1.140 +
1.141 +double Flag::get_double() const {
1.142 + return *((double*) _addr);
1.143 +}
1.144 +
1.145 +void Flag::set_double(double value) {
1.146 + check_writable();
1.147 + *((double*) _addr) = value;
1.148 +}
1.149 +
1.150 +bool Flag::is_ccstr() const {
1.151 + return strcmp(_type, "ccstr") == 0 || strcmp(_type, "ccstrlist") == 0;
1.152 +}
1.153 +
1.154 +bool Flag::ccstr_accumulates() const {
1.155 + return strcmp(_type, "ccstrlist") == 0;
1.156 +}
1.157 +
1.158 +ccstr Flag::get_ccstr() const {
1.159 + return *((ccstr*) _addr);
1.160 +}
1.161 +
1.162 +void Flag::set_ccstr(ccstr value) {
1.163 + check_writable();
1.164 + *((ccstr*) _addr) = value;
1.165 +}
1.166 +
1.167 +
1.168 +Flag::Flags Flag::get_origin() {
1.169 + return Flags(_flags & VALUE_ORIGIN_MASK);
1.170 +}
1.171 +
1.172 +void Flag::set_origin(Flags origin) {
1.173 + assert((origin & VALUE_ORIGIN_MASK) == origin, "sanity");
1.174 + _flags = Flags((_flags & ~VALUE_ORIGIN_MASK) | origin);
1.175 +}
1.176 +
1.177 +bool Flag::is_default() {
1.178 + return (get_origin() == DEFAULT);
1.179 +}
1.180 +
1.181 +bool Flag::is_ergonomic() {
1.182 + return (get_origin() == ERGONOMIC);
1.183 +}
1.184 +
1.185 +bool Flag::is_command_line() {
1.186 + return (get_origin() == COMMAND_LINE);
1.187 +}
1.188 +
1.189 +bool Flag::is_product() const {
1.190 + return (_flags & KIND_PRODUCT) != 0;
1.191 +}
1.192 +
1.193 +bool Flag::is_manageable() const {
1.194 + return (_flags & KIND_MANAGEABLE) != 0;
1.195 +}
1.196 +
1.197 +bool Flag::is_diagnostic() const {
1.198 + return (_flags & KIND_DIAGNOSTIC) != 0;
1.199 +}
1.200 +
1.201 +bool Flag::is_experimental() const {
1.202 + return (_flags & KIND_EXPERIMENTAL) != 0;
1.203 +}
1.204 +
1.205 +bool Flag::is_notproduct() const {
1.206 + return (_flags & KIND_NOT_PRODUCT) != 0;
1.207 +}
1.208 +
1.209 +bool Flag::is_develop() const {
1.210 + return (_flags & KIND_DEVELOP) != 0;
1.211 +}
1.212 +
1.213 +bool Flag::is_read_write() const {
1.214 + return (_flags & KIND_READ_WRITE) != 0;
1.215 +}
1.216 +
1.217 +bool Flag::is_commercial() const {
1.218 + return (_flags & KIND_COMMERCIAL) != 0;
1.219 +}
1.220 +
1.221 +/**
1.222 + * Returns if this flag is a constant in the binary. Right now this is
1.223 + * true for notproduct and develop flags in product builds.
1.224 + */
1.225 +bool Flag::is_constant_in_binary() const {
1.226 +#ifdef PRODUCT
1.227 + return is_notproduct() || is_develop();
1.228 +#else
1.229 + return false;
1.230 +#endif
1.231 +}
1.232 +
1.233 +bool Flag::is_unlocker() const {
1.234 + return strcmp(_name, "UnlockDiagnosticVMOptions") == 0 ||
1.235 + strcmp(_name, "UnlockExperimentalVMOptions") == 0 ||
1.236 + is_unlocker_ext();
1.237 +}
1.238 +
1.239 +bool Flag::is_unlocked() const {
1.240 + if (is_diagnostic()) {
1.241 + return UnlockDiagnosticVMOptions;
1.242 + }
1.243 + if (is_experimental()) {
1.244 + return UnlockExperimentalVMOptions;
1.245 + }
1.246 + return is_unlocked_ext();
1.247 +}
1.248 +
1.249 +// Get custom message for this locked flag, or return NULL if
1.250 +// none is available.
1.251 +void Flag::get_locked_message(char* buf, int buflen) const {
1.252 + buf[0] = '\0';
1.253 + if (is_diagnostic() && !is_unlocked()) {
1.254 + jio_snprintf(buf, buflen, "Error: VM option '%s' is diagnostic and must be enabled via -XX:+UnlockDiagnosticVMOptions.\n",
1.255 + _name);
1.256 + return;
1.257 + }
1.258 + if (is_experimental() && !is_unlocked()) {
1.259 + jio_snprintf(buf, buflen, "Error: VM option '%s' is experimental and must be enabled via -XX:+UnlockExperimentalVMOptions.\n",
1.260 + _name);
1.261 + return;
1.262 + }
1.263 + if (is_develop() && is_product_build()) {
1.264 + jio_snprintf(buf, buflen, "Error: VM option '%s' is develop and is available only in debug version of VM.\n",
1.265 + _name);
1.266 + return;
1.267 + }
1.268 + if (is_notproduct() && is_product_build()) {
1.269 + jio_snprintf(buf, buflen, "Error: VM option '%s' is notproduct and is available only in debug version of VM.\n",
1.270 + _name);
1.271 + return;
1.272 + }
1.273 + get_locked_message_ext(buf, buflen);
1.274 +}
1.275 +
1.276 +bool Flag::is_writeable() const {
1.277 + return is_manageable() || (is_product() && is_read_write()) || is_writeable_ext();
1.278 +}
1.279 +
1.280 +// All flags except "manageable" are assumed to be internal flags.
1.281 +// Long term, we need to define a mechanism to specify which flags
1.282 +// are external/stable and change this function accordingly.
1.283 +bool Flag::is_external() const {
1.284 + return is_manageable() || is_external_ext();
1.285 +}
1.286 +
1.287 +
1.288 +// Length of format string (e.g. "%.1234s") for printing ccstr below
1.289 +#define FORMAT_BUFFER_LEN 16
1.290 +
1.291 +PRAGMA_FORMAT_NONLITERAL_IGNORED_EXTERNAL
1.292 +void Flag::print_on(outputStream* st, bool withComments) {
1.293 + // Don't print notproduct and develop flags in a product build.
1.294 + if (is_constant_in_binary()) {
1.295 + return;
1.296 + }
1.297 +
1.298 + st->print("%9s %-40s %c= ", _type, _name, (!is_default() ? ':' : ' '));
1.299 +
1.300 + if (is_bool()) {
1.301 + st->print("%-16s", get_bool() ? "true" : "false");
1.302 + }
1.303 + if (is_intx()) {
1.304 + st->print("%-16ld", get_intx());
1.305 + }
1.306 + if (is_uintx()) {
1.307 + st->print("%-16lu", get_uintx());
1.308 + }
1.309 + if (is_uint64_t()) {
1.310 + st->print("%-16lu", get_uint64_t());
1.311 + }
1.312 + if (is_double()) {
1.313 + st->print("%-16f", get_double());
1.314 + }
1.315 + if (is_ccstr()) {
1.316 + const char* cp = get_ccstr();
1.317 + if (cp != NULL) {
1.318 + const char* eol;
1.319 + while ((eol = strchr(cp, '\n')) != NULL) {
1.320 + char format_buffer[FORMAT_BUFFER_LEN];
1.321 + size_t llen = pointer_delta(eol, cp, sizeof(char));
1.322 + jio_snprintf(format_buffer, FORMAT_BUFFER_LEN,
1.323 + "%%." SIZE_FORMAT "s", llen);
1.324 +PRAGMA_DIAG_PUSH
1.325 +PRAGMA_FORMAT_NONLITERAL_IGNORED_INTERNAL
1.326 + st->print(format_buffer, cp);
1.327 +PRAGMA_DIAG_POP
1.328 + st->cr();
1.329 + cp = eol+1;
1.330 + st->print("%5s %-35s += ", "", _name);
1.331 + }
1.332 + st->print("%-16s", cp);
1.333 + }
1.334 + else st->print("%-16s", "");
1.335 + }
1.336 +
1.337 + st->print("%-20s", " ");
1.338 + print_kind(st);
1.339 +
1.340 + if (withComments) {
1.341 +#ifndef PRODUCT
1.342 + st->print("%s", _doc);
1.343 +#endif
1.344 + }
1.345 + st->cr();
1.346 +}
1.347 +
1.348 +void Flag::print_kind(outputStream* st) {
1.349 + struct Data {
1.350 + int flag;
1.351 + const char* name;
1.352 + };
1.353 +
1.354 + Data data[] = {
1.355 + { KIND_C1, "C1" },
1.356 + { KIND_C2, "C2" },
1.357 + { KIND_ARCH, "ARCH" },
1.358 + { KIND_SHARK, "SHARK" },
1.359 + { KIND_PLATFORM_DEPENDENT, "pd" },
1.360 + { KIND_PRODUCT, "product" },
1.361 + { KIND_MANAGEABLE, "manageable" },
1.362 + { KIND_DIAGNOSTIC, "diagnostic" },
1.363 + { KIND_EXPERIMENTAL, "experimental" },
1.364 + { KIND_COMMERCIAL, "commercial" },
1.365 + { KIND_NOT_PRODUCT, "notproduct" },
1.366 + { KIND_DEVELOP, "develop" },
1.367 + { KIND_LP64_PRODUCT, "lp64_product" },
1.368 + { KIND_READ_WRITE, "rw" },
1.369 + { -1, "" }
1.370 + };
1.371 +
1.372 + if ((_flags & KIND_MASK) != 0) {
1.373 + st->print("{");
1.374 + bool is_first = true;
1.375 +
1.376 + for (int i = 0; data[i].flag != -1; i++) {
1.377 + Data d = data[i];
1.378 + if ((_flags & d.flag) != 0) {
1.379 + if (is_first) {
1.380 + is_first = false;
1.381 + } else {
1.382 + st->print(" ");
1.383 + }
1.384 + st->print("%s", d.name);
1.385 + }
1.386 + }
1.387 +
1.388 + st->print("}");
1.389 + }
1.390 +}
1.391 +
1.392 +void Flag::print_as_flag(outputStream* st) {
1.393 + if (is_bool()) {
1.394 + st->print("-XX:%s%s", get_bool() ? "+" : "-", _name);
1.395 + } else if (is_intx()) {
1.396 + st->print("-XX:%s=" INTX_FORMAT, _name, get_intx());
1.397 + } else if (is_uintx()) {
1.398 + st->print("-XX:%s=" UINTX_FORMAT, _name, get_uintx());
1.399 + } else if (is_uint64_t()) {
1.400 + st->print("-XX:%s=" UINT64_FORMAT, _name, get_uint64_t());
1.401 + } else if (is_double()) {
1.402 + st->print("-XX:%s=%f", _name, get_double());
1.403 + } else if (is_ccstr()) {
1.404 + st->print("-XX:%s=", _name);
1.405 + const char* cp = get_ccstr();
1.406 + if (cp != NULL) {
1.407 + // Need to turn embedded '\n's back into separate arguments
1.408 + // Not so efficient to print one character at a time,
1.409 + // but the choice is to do the transformation to a buffer
1.410 + // and print that. And this need not be efficient.
1.411 + for (; *cp != '\0'; cp += 1) {
1.412 + switch (*cp) {
1.413 + default:
1.414 + st->print("%c", *cp);
1.415 + break;
1.416 + case '\n':
1.417 + st->print(" -XX:%s=", _name);
1.418 + break;
1.419 + }
1.420 + }
1.421 + }
1.422 + } else {
1.423 + ShouldNotReachHere();
1.424 + }
1.425 +}
1.426 +
1.427 +// 4991491 do not "optimize out" the was_set false values: omitting them
1.428 +// tickles a Microsoft compiler bug causing flagTable to be malformed
1.429 +
1.430 +#define NAME(name) NOT_PRODUCT(&name) PRODUCT_ONLY(&CONST_##name)
1.431 +
1.432 +#define RUNTIME_PRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_PRODUCT) },
1.433 +#define RUNTIME_PD_PRODUCT_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_PRODUCT | Flag::KIND_PLATFORM_DEPENDENT) },
1.434 +#define RUNTIME_DIAGNOSTIC_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_DIAGNOSTIC) },
1.435 +#define RUNTIME_EXPERIMENTAL_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_EXPERIMENTAL) },
1.436 +#define RUNTIME_MANAGEABLE_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_MANAGEABLE) },
1.437 +#define RUNTIME_PRODUCT_RW_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_PRODUCT | Flag::KIND_READ_WRITE) },
1.438 +#define RUNTIME_DEVELOP_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_DEVELOP) },
1.439 +#define RUNTIME_PD_DEVELOP_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_DEVELOP | Flag::KIND_PLATFORM_DEPENDENT) },
1.440 +#define RUNTIME_NOTPRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_NOT_PRODUCT) },
1.441 +
1.442 +#ifdef _LP64
1.443 +#define RUNTIME_LP64_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_LP64_PRODUCT) },
1.444 +#else
1.445 +#define RUNTIME_LP64_PRODUCT_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
1.446 +#endif // _LP64
1.447 +
1.448 +#define C1_PRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C1 | Flag::KIND_PRODUCT) },
1.449 +#define C1_PD_PRODUCT_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C1 | Flag::KIND_PRODUCT | Flag::KIND_PLATFORM_DEPENDENT) },
1.450 +#define C1_DIAGNOSTIC_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C1 | Flag::KIND_DIAGNOSTIC) },
1.451 +#define C1_DEVELOP_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C1 | Flag::KIND_DEVELOP) },
1.452 +#define C1_PD_DEVELOP_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C1 | Flag::KIND_DEVELOP | Flag::KIND_PLATFORM_DEPENDENT) },
1.453 +#define C1_NOTPRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C1 | Flag::KIND_NOT_PRODUCT) },
1.454 +
1.455 +#define C2_PRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C2 | Flag::KIND_PRODUCT) },
1.456 +#define C2_PD_PRODUCT_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C2 | Flag::KIND_PRODUCT | Flag::KIND_PLATFORM_DEPENDENT) },
1.457 +#define C2_DIAGNOSTIC_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C2 | Flag::KIND_DIAGNOSTIC) },
1.458 +#define C2_EXPERIMENTAL_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C2 | Flag::KIND_EXPERIMENTAL) },
1.459 +#define C2_DEVELOP_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C2 | Flag::KIND_DEVELOP) },
1.460 +#define C2_PD_DEVELOP_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C2 | Flag::KIND_DEVELOP | Flag::KIND_PLATFORM_DEPENDENT) },
1.461 +#define C2_NOTPRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C2 | Flag::KIND_NOT_PRODUCT) },
1.462 +
1.463 +#define ARCH_PRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_ARCH | Flag::KIND_PRODUCT) },
1.464 +#define ARCH_DIAGNOSTIC_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_ARCH | Flag::KIND_DIAGNOSTIC) },
1.465 +#define ARCH_EXPERIMENTAL_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_ARCH | Flag::KIND_EXPERIMENTAL) },
1.466 +#define ARCH_DEVELOP_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_ARCH | Flag::KIND_DEVELOP) },
1.467 +#define ARCH_NOTPRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_ARCH | Flag::KIND_NOT_PRODUCT) },
1.468 +
1.469 +#define SHARK_PRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_SHARK | Flag::KIND_PRODUCT) },
1.470 +#define SHARK_PD_PRODUCT_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_SHARK | Flag::KIND_PRODUCT | Flag::KIND_PLATFORM_DEPENDENT) },
1.471 +#define SHARK_DIAGNOSTIC_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_SHARK | Flag::KIND_DIAGNOSTIC) },
1.472 +#define SHARK_DEVELOP_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_SHARK | Flag::KIND_DEVELOP) },
1.473 +#define SHARK_PD_DEVELOP_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_SHARK | Flag::KIND_DEVELOP | Flag::KIND_PLATFORM_DEPENDENT) },
1.474 +#define SHARK_NOTPRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_SHARK | Flag::KIND_NOT_PRODUCT) },
1.475 +
1.476 +static Flag flagTable[] = {
1.477 + 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)
1.478 + 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)
1.479 +#if INCLUDE_ALL_GCS
1.480 + 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)
1.481 +#endif // INCLUDE_ALL_GCS
1.482 +#ifdef COMPILER1
1.483 + C1_FLAGS(C1_DEVELOP_FLAG_STRUCT, C1_PD_DEVELOP_FLAG_STRUCT, C1_PRODUCT_FLAG_STRUCT, C1_PD_PRODUCT_FLAG_STRUCT, C1_DIAGNOSTIC_FLAG_STRUCT, C1_NOTPRODUCT_FLAG_STRUCT)
1.484 +#endif
1.485 +#ifdef COMPILER2
1.486 + 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)
1.487 +#endif
1.488 +#ifdef SHARK
1.489 + SHARK_FLAGS(SHARK_DEVELOP_FLAG_STRUCT, SHARK_PD_DEVELOP_FLAG_STRUCT, SHARK_PRODUCT_FLAG_STRUCT, SHARK_PD_PRODUCT_FLAG_STRUCT, SHARK_DIAGNOSTIC_FLAG_STRUCT, SHARK_NOTPRODUCT_FLAG_STRUCT)
1.490 +#endif
1.491 + ARCH_FLAGS(ARCH_DEVELOP_FLAG_STRUCT, ARCH_PRODUCT_FLAG_STRUCT, ARCH_DIAGNOSTIC_FLAG_STRUCT, ARCH_EXPERIMENTAL_FLAG_STRUCT, ARCH_NOTPRODUCT_FLAG_STRUCT)
1.492 + FLAGTABLE_EXT
1.493 + {0, NULL, NULL}
1.494 +};
1.495 +
1.496 +Flag* Flag::flags = flagTable;
1.497 +size_t Flag::numFlags = (sizeof(flagTable) / sizeof(Flag));
1.498 +
1.499 +inline bool str_equal(const char* s, const char* q, size_t len) {
1.500 + // s is null terminated, q is not!
1.501 + if (strlen(s) != (unsigned int) len) return false;
1.502 + return strncmp(s, q, len) == 0;
1.503 +}
1.504 +
1.505 +// Search the flag table for a named flag
1.506 +Flag* Flag::find_flag(const char* name, size_t length, bool allow_locked, bool return_flag) {
1.507 + for (Flag* current = &flagTable[0]; current->_name != NULL; current++) {
1.508 + if (str_equal(current->_name, name, length)) {
1.509 + // Found a matching entry.
1.510 + // Don't report notproduct and develop flags in product builds.
1.511 + if (current->is_constant_in_binary()) {
1.512 + return (return_flag == true ? current : NULL);
1.513 + }
1.514 + // Report locked flags only if allowed.
1.515 + if (!(current->is_unlocked() || current->is_unlocker())) {
1.516 + if (!allow_locked) {
1.517 + // disable use of locked flags, e.g. diagnostic, experimental,
1.518 + // commercial... until they are explicitly unlocked
1.519 + return NULL;
1.520 + }
1.521 + }
1.522 + return current;
1.523 + }
1.524 + }
1.525 + // Flag name is not in the flag table
1.526 + return NULL;
1.527 +}
1.528 +
1.529 +// Compute string similarity based on Dice's coefficient
1.530 +static float str_similar(const char* str1, const char* str2, size_t len2) {
1.531 + int len1 = (int) strlen(str1);
1.532 + int total = len1 + (int) len2;
1.533 +
1.534 + int hit = 0;
1.535 +
1.536 + for (int i = 0; i < len1 -1; ++i) {
1.537 + for (int j = 0; j < (int) len2 -1; ++j) {
1.538 + if ((str1[i] == str2[j]) && (str1[i+1] == str2[j+1])) {
1.539 + ++hit;
1.540 + break;
1.541 + }
1.542 + }
1.543 + }
1.544 +
1.545 + return 2.0f * (float) hit / (float) total;
1.546 +}
1.547 +
1.548 +Flag* Flag::fuzzy_match(const char* name, size_t length, bool allow_locked) {
1.549 + float VMOptionsFuzzyMatchSimilarity = 0.7f;
1.550 + Flag* match = NULL;
1.551 + float score;
1.552 + float max_score = -1;
1.553 +
1.554 + for (Flag* current = &flagTable[0]; current->_name != NULL; current++) {
1.555 + score = str_similar(current->_name, name, length);
1.556 + if (score > max_score) {
1.557 + max_score = score;
1.558 + match = current;
1.559 + }
1.560 + }
1.561 +
1.562 + if (!(match->is_unlocked() || match->is_unlocker())) {
1.563 + if (!allow_locked) {
1.564 + return NULL;
1.565 + }
1.566 + }
1.567 +
1.568 + if (max_score < VMOptionsFuzzyMatchSimilarity) {
1.569 + return NULL;
1.570 + }
1.571 +
1.572 + return match;
1.573 +}
1.574 +
1.575 +// Returns the address of the index'th element
1.576 +static Flag* address_of_flag(CommandLineFlagWithType flag) {
1.577 + assert((size_t)flag < Flag::numFlags, "bad command line flag index");
1.578 + return &Flag::flags[flag];
1.579 +}
1.580 +
1.581 +bool CommandLineFlagsEx::is_default(CommandLineFlag flag) {
1.582 + assert((size_t)flag < Flag::numFlags, "bad command line flag index");
1.583 + Flag* f = &Flag::flags[flag];
1.584 + return f->is_default();
1.585 +}
1.586 +
1.587 +bool CommandLineFlagsEx::is_ergo(CommandLineFlag flag) {
1.588 + assert((size_t)flag < Flag::numFlags, "bad command line flag index");
1.589 + Flag* f = &Flag::flags[flag];
1.590 + return f->is_ergonomic();
1.591 +}
1.592 +
1.593 +bool CommandLineFlagsEx::is_cmdline(CommandLineFlag flag) {
1.594 + assert((size_t)flag < Flag::numFlags, "bad command line flag index");
1.595 + Flag* f = &Flag::flags[flag];
1.596 + return f->is_command_line();
1.597 +}
1.598 +
1.599 +bool CommandLineFlags::wasSetOnCmdline(const char* name, bool* value) {
1.600 + Flag* result = Flag::find_flag((char*)name, strlen(name));
1.601 + if (result == NULL) return false;
1.602 + *value = result->is_command_line();
1.603 + return true;
1.604 +}
1.605 +
1.606 +template<class E, class T>
1.607 +static void trace_flag_changed(const char* name, const T old_value, const T new_value, const Flag::Flags origin)
1.608 +{
1.609 + E e;
1.610 + e.set_name(name);
1.611 + e.set_old_value(old_value);
1.612 + e.set_new_value(new_value);
1.613 + e.set_origin(origin);
1.614 + e.commit();
1.615 +}
1.616 +
1.617 +bool CommandLineFlags::boolAt(char* name, size_t len, bool* value) {
1.618 + Flag* result = Flag::find_flag(name, len);
1.619 + if (result == NULL) return false;
1.620 + if (!result->is_bool()) return false;
1.621 + *value = result->get_bool();
1.622 + return true;
1.623 +}
1.624 +
1.625 +bool CommandLineFlags::boolAtPut(char* name, size_t len, bool* value, Flag::Flags origin) {
1.626 + Flag* result = Flag::find_flag(name, len);
1.627 + if (result == NULL) return false;
1.628 + if (!result->is_bool()) return false;
1.629 + bool old_value = result->get_bool();
1.630 + trace_flag_changed<EventBooleanFlagChanged, bool>(name, old_value, *value, origin);
1.631 + result->set_bool(*value);
1.632 + *value = old_value;
1.633 + result->set_origin(origin);
1.634 + return true;
1.635 +}
1.636 +
1.637 +void CommandLineFlagsEx::boolAtPut(CommandLineFlagWithType flag, bool value, Flag::Flags origin) {
1.638 + Flag* faddr = address_of_flag(flag);
1.639 + guarantee(faddr != NULL && faddr->is_bool(), "wrong flag type");
1.640 + trace_flag_changed<EventBooleanFlagChanged, bool>(faddr->_name, faddr->get_bool(), value, origin);
1.641 + faddr->set_bool(value);
1.642 + faddr->set_origin(origin);
1.643 +}
1.644 +
1.645 +bool CommandLineFlags::intxAt(char* name, size_t len, intx* value) {
1.646 + Flag* result = Flag::find_flag(name, len);
1.647 + if (result == NULL) return false;
1.648 + if (!result->is_intx()) return false;
1.649 + *value = result->get_intx();
1.650 + return true;
1.651 +}
1.652 +
1.653 +bool CommandLineFlags::intxAtPut(char* name, size_t len, intx* value, Flag::Flags origin) {
1.654 + Flag* result = Flag::find_flag(name, len);
1.655 + if (result == NULL) return false;
1.656 + if (!result->is_intx()) return false;
1.657 + intx old_value = result->get_intx();
1.658 + trace_flag_changed<EventLongFlagChanged, s8>(name, old_value, *value, origin);
1.659 + result->set_intx(*value);
1.660 + *value = old_value;
1.661 + result->set_origin(origin);
1.662 + return true;
1.663 +}
1.664 +
1.665 +void CommandLineFlagsEx::intxAtPut(CommandLineFlagWithType flag, intx value, Flag::Flags origin) {
1.666 + Flag* faddr = address_of_flag(flag);
1.667 + guarantee(faddr != NULL && faddr->is_intx(), "wrong flag type");
1.668 + trace_flag_changed<EventLongFlagChanged, s8>(faddr->_name, faddr->get_intx(), value, origin);
1.669 + faddr->set_intx(value);
1.670 + faddr->set_origin(origin);
1.671 +}
1.672 +
1.673 +bool CommandLineFlags::uintxAt(char* name, size_t len, uintx* value) {
1.674 + Flag* result = Flag::find_flag(name, len);
1.675 + if (result == NULL) return false;
1.676 + if (!result->is_uintx()) return false;
1.677 + *value = result->get_uintx();
1.678 + return true;
1.679 +}
1.680 +
1.681 +bool CommandLineFlags::uintxAtPut(char* name, size_t len, uintx* value, Flag::Flags origin) {
1.682 + Flag* result = Flag::find_flag(name, len);
1.683 + if (result == NULL) return false;
1.684 + if (!result->is_uintx()) return false;
1.685 + uintx old_value = result->get_uintx();
1.686 + trace_flag_changed<EventUnsignedLongFlagChanged, u8>(name, old_value, *value, origin);
1.687 + result->set_uintx(*value);
1.688 + *value = old_value;
1.689 + result->set_origin(origin);
1.690 + return true;
1.691 +}
1.692 +
1.693 +void CommandLineFlagsEx::uintxAtPut(CommandLineFlagWithType flag, uintx value, Flag::Flags origin) {
1.694 + Flag* faddr = address_of_flag(flag);
1.695 + guarantee(faddr != NULL && faddr->is_uintx(), "wrong flag type");
1.696 + trace_flag_changed<EventUnsignedLongFlagChanged, u8>(faddr->_name, faddr->get_uintx(), value, origin);
1.697 + faddr->set_uintx(value);
1.698 + faddr->set_origin(origin);
1.699 +}
1.700 +
1.701 +bool CommandLineFlags::uint64_tAt(char* name, size_t len, uint64_t* value) {
1.702 + Flag* result = Flag::find_flag(name, len);
1.703 + if (result == NULL) return false;
1.704 + if (!result->is_uint64_t()) return false;
1.705 + *value = result->get_uint64_t();
1.706 + return true;
1.707 +}
1.708 +
1.709 +bool CommandLineFlags::uint64_tAtPut(char* name, size_t len, uint64_t* value, Flag::Flags origin) {
1.710 + Flag* result = Flag::find_flag(name, len);
1.711 + if (result == NULL) return false;
1.712 + if (!result->is_uint64_t()) return false;
1.713 + uint64_t old_value = result->get_uint64_t();
1.714 + trace_flag_changed<EventUnsignedLongFlagChanged, u8>(name, old_value, *value, origin);
1.715 + result->set_uint64_t(*value);
1.716 + *value = old_value;
1.717 + result->set_origin(origin);
1.718 + return true;
1.719 +}
1.720 +
1.721 +void CommandLineFlagsEx::uint64_tAtPut(CommandLineFlagWithType flag, uint64_t value, Flag::Flags origin) {
1.722 + Flag* faddr = address_of_flag(flag);
1.723 + guarantee(faddr != NULL && faddr->is_uint64_t(), "wrong flag type");
1.724 + trace_flag_changed<EventUnsignedLongFlagChanged, u8>(faddr->_name, faddr->get_uint64_t(), value, origin);
1.725 + faddr->set_uint64_t(value);
1.726 + faddr->set_origin(origin);
1.727 +}
1.728 +
1.729 +bool CommandLineFlags::doubleAt(char* name, size_t len, double* value) {
1.730 + Flag* result = Flag::find_flag(name, len);
1.731 + if (result == NULL) return false;
1.732 + if (!result->is_double()) return false;
1.733 + *value = result->get_double();
1.734 + return true;
1.735 +}
1.736 +
1.737 +bool CommandLineFlags::doubleAtPut(char* name, size_t len, double* value, Flag::Flags origin) {
1.738 + Flag* result = Flag::find_flag(name, len);
1.739 + if (result == NULL) return false;
1.740 + if (!result->is_double()) return false;
1.741 + double old_value = result->get_double();
1.742 + trace_flag_changed<EventDoubleFlagChanged, double>(name, old_value, *value, origin);
1.743 + result->set_double(*value);
1.744 + *value = old_value;
1.745 + result->set_origin(origin);
1.746 + return true;
1.747 +}
1.748 +
1.749 +void CommandLineFlagsEx::doubleAtPut(CommandLineFlagWithType flag, double value, Flag::Flags origin) {
1.750 + Flag* faddr = address_of_flag(flag);
1.751 + guarantee(faddr != NULL && faddr->is_double(), "wrong flag type");
1.752 + trace_flag_changed<EventDoubleFlagChanged, double>(faddr->_name, faddr->get_double(), value, origin);
1.753 + faddr->set_double(value);
1.754 + faddr->set_origin(origin);
1.755 +}
1.756 +
1.757 +bool CommandLineFlags::ccstrAt(char* name, size_t len, ccstr* value) {
1.758 + Flag* result = Flag::find_flag(name, len);
1.759 + if (result == NULL) return false;
1.760 + if (!result->is_ccstr()) return false;
1.761 + *value = result->get_ccstr();
1.762 + return true;
1.763 +}
1.764 +
1.765 +// Contract: Flag will make private copy of the incoming value.
1.766 +// Outgoing value is always malloc-ed, and caller MUST call free.
1.767 +bool CommandLineFlags::ccstrAtPut(char* name, size_t len, ccstr* value, Flag::Flags origin) {
1.768 + Flag* result = Flag::find_flag(name, len);
1.769 + if (result == NULL) return false;
1.770 + if (!result->is_ccstr()) return false;
1.771 + ccstr old_value = result->get_ccstr();
1.772 + trace_flag_changed<EventStringFlagChanged, const char*>(name, old_value, *value, origin);
1.773 + char* new_value = NULL;
1.774 + if (*value != NULL) {
1.775 + new_value = NEW_C_HEAP_ARRAY(char, strlen(*value)+1, mtInternal);
1.776 + strcpy(new_value, *value);
1.777 + }
1.778 + result->set_ccstr(new_value);
1.779 + if (result->is_default() && old_value != NULL) {
1.780 + // Prior value is NOT heap allocated, but was a literal constant.
1.781 + char* old_value_to_free = NEW_C_HEAP_ARRAY(char, strlen(old_value)+1, mtInternal);
1.782 + strcpy(old_value_to_free, old_value);
1.783 + old_value = old_value_to_free;
1.784 + }
1.785 + *value = old_value;
1.786 + result->set_origin(origin);
1.787 + return true;
1.788 +}
1.789 +
1.790 +// Contract: Flag will make private copy of the incoming value.
1.791 +void CommandLineFlagsEx::ccstrAtPut(CommandLineFlagWithType flag, ccstr value, Flag::Flags origin) {
1.792 + Flag* faddr = address_of_flag(flag);
1.793 + guarantee(faddr != NULL && faddr->is_ccstr(), "wrong flag type");
1.794 + ccstr old_value = faddr->get_ccstr();
1.795 + trace_flag_changed<EventStringFlagChanged, const char*>(faddr->_name, old_value, value, origin);
1.796 + char* new_value = NEW_C_HEAP_ARRAY(char, strlen(value)+1, mtInternal);
1.797 + strcpy(new_value, value);
1.798 + faddr->set_ccstr(new_value);
1.799 + if (!faddr->is_default() && old_value != NULL) {
1.800 + // Prior value is heap allocated so free it.
1.801 + FREE_C_HEAP_ARRAY(char, old_value, mtInternal);
1.802 + }
1.803 + faddr->set_origin(origin);
1.804 +}
1.805 +
1.806 +extern "C" {
1.807 + static int compare_flags(const void* void_a, const void* void_b) {
1.808 + return strcmp((*((Flag**) void_a))->_name, (*((Flag**) void_b))->_name);
1.809 + }
1.810 +}
1.811 +
1.812 +void CommandLineFlags::printSetFlags(outputStream* out) {
1.813 + // Print which flags were set on the command line
1.814 + // note: this method is called before the thread structure is in place
1.815 + // which means resource allocation cannot be used.
1.816 +
1.817 + // The last entry is the null entry.
1.818 + const size_t length = Flag::numFlags - 1;
1.819 +
1.820 + // Sort
1.821 + Flag** array = NEW_C_HEAP_ARRAY(Flag*, length, mtInternal);
1.822 + for (size_t i = 0; i < length; i++) {
1.823 + array[i] = &flagTable[i];
1.824 + }
1.825 + qsort(array, length, sizeof(Flag*), compare_flags);
1.826 +
1.827 + // Print
1.828 + for (size_t i = 0; i < length; i++) {
1.829 + if (array[i]->get_origin() /* naked field! */) {
1.830 + array[i]->print_as_flag(out);
1.831 + out->print(" ");
1.832 + }
1.833 + }
1.834 + out->cr();
1.835 + FREE_C_HEAP_ARRAY(Flag*, array, mtInternal);
1.836 +}
1.837 +
1.838 +#ifndef PRODUCT
1.839 +
1.840 +
1.841 +void CommandLineFlags::verify() {
1.842 + assert(Arguments::check_vm_args_consistency(), "Some flag settings conflict");
1.843 +}
1.844 +
1.845 +#endif // PRODUCT
1.846 +
1.847 +void CommandLineFlags::printFlags(outputStream* out, bool withComments) {
1.848 + // Print the flags sorted by name
1.849 + // note: this method is called before the thread structure is in place
1.850 + // which means resource allocation cannot be used.
1.851 +
1.852 + // The last entry is the null entry.
1.853 + const size_t length = Flag::numFlags - 1;
1.854 +
1.855 + // Sort
1.856 + Flag** array = NEW_C_HEAP_ARRAY(Flag*, length, mtInternal);
1.857 + for (size_t i = 0; i < length; i++) {
1.858 + array[i] = &flagTable[i];
1.859 + }
1.860 + qsort(array, length, sizeof(Flag*), compare_flags);
1.861 +
1.862 + // Print
1.863 + out->print_cr("[Global flags]");
1.864 + for (size_t i = 0; i < length; i++) {
1.865 + if (array[i]->is_unlocked()) {
1.866 + array[i]->print_on(out, withComments);
1.867 + }
1.868 + }
1.869 + FREE_C_HEAP_ARRAY(Flag*, array, mtInternal);
1.870 +}
