duke@435: /*
kmo@4586:  * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
duke@435:  *
duke@435:  */
duke@435: 
stefank@2314: #include "precompiled.hpp"
stefank@2314: #include "memory/allocation.inline.hpp"
stefank@2314: #include "oops/oop.inline.hpp"
stefank@2314: #include "runtime/arguments.hpp"
stefank@2314: #include "runtime/globals.hpp"
stefank@2314: #include "runtime/globals_extension.hpp"
stefank@2314: #include "utilities/ostream.hpp"
jprovino@4542: #include "utilities/macros.hpp"
stefank@2314: #include "utilities/top.hpp"
jprovino@4542: #if INCLUDE_ALL_GCS
stefank@2314: #include "gc_implementation/g1/g1_globals.hpp"
jprovino@4542: #endif // INCLUDE_ALL_GCS
stefank@2314: #ifdef COMPILER1
stefank@2314: #include "c1/c1_globals.hpp"
stefank@2314: #endif
stefank@2314: #ifdef COMPILER2
stefank@2314: #include "opto/c2_globals.hpp"
stefank@2314: #endif
stefank@2314: #ifdef SHARK
stefank@2314: #include "shark/shark_globals.hpp"
stefank@2314: #endif
duke@435: 
duke@435: RUNTIME_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PD_DEVELOPER_FLAG, \
duke@435:               MATERIALIZE_PRODUCT_FLAG, MATERIALIZE_PD_PRODUCT_FLAG, \
phh@3287:               MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_EXPERIMENTAL_FLAG, \
phh@3287:               MATERIALIZE_NOTPRODUCT_FLAG, \
coleenp@548:               MATERIALIZE_MANAGEABLE_FLAG, MATERIALIZE_PRODUCT_RW_FLAG, \
coleenp@548:               MATERIALIZE_LP64_PRODUCT_FLAG)
duke@435: 
duke@435: RUNTIME_OS_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PD_DEVELOPER_FLAG, \
duke@435:                  MATERIALIZE_PRODUCT_FLAG, MATERIALIZE_PD_PRODUCT_FLAG, \
duke@435:                  MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_NOTPRODUCT_FLAG)
duke@435: 
twisti@4020: ARCH_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PRODUCT_FLAG, \
twisti@4020:            MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_EXPERIMENTAL_FLAG, \
twisti@4020:            MATERIALIZE_NOTPRODUCT_FLAG)
twisti@4020: 
phh@3303: MATERIALIZE_FLAGS_EXT
phh@3303: 
phh@3303: 
duke@435: bool Flag::is_unlocker() const {
phh@3287:   return strcmp(name, "UnlockDiagnosticVMOptions") == 0     ||
phh@3303:          strcmp(name, "UnlockExperimentalVMOptions") == 0   ||
phh@3303:          is_unlocker_ext();
duke@435: }
duke@435: 
duke@435: bool Flag::is_unlocked() const {
kmo@4586:   if (strcmp(kind, "{diagnostic}") == 0 ||
kmo@4586:       strcmp(kind, "{C2 diagnostic}") == 0 ||
kmo@4586:       strcmp(kind, "{ARCH diagnostic}") == 0 ||
kmo@4586:       strcmp(kind, "{Shark diagnostic}") == 0) {
duke@435:     return UnlockDiagnosticVMOptions;
never@1515:   } else if (strcmp(kind, "{experimental}") == 0 ||
kmo@4586:              strcmp(kind, "{C2 experimental}") == 0 ||
kmo@4586:              strcmp(kind, "{ARCH experimental}") == 0 ||
kmo@4586:              strcmp(kind, "{Shark experimental}") == 0) {
ysr@785:     return UnlockExperimentalVMOptions;
duke@435:   } else {
phh@3303:     return is_unlocked_ext();
duke@435:   }
duke@435: }
duke@435: 
jmelvin@3650: // Get custom message for this locked flag, or return NULL if
jmelvin@3650: // none is available.
jmelvin@3650: void Flag::get_locked_message(char* buf, int buflen) const {
jmelvin@3650:   get_locked_message_ext(buf, buflen);
jmelvin@3650: }
jmelvin@3650: 
duke@435: bool Flag::is_writeable() const {
phh@3342:   return strcmp(kind, "{manageable}") == 0 ||
phh@3342:          strcmp(kind, "{product rw}") == 0 ||
phh@3342:          is_writeable_ext();
duke@435: }
duke@435: 
phh@3342: // All flags except "manageable" are assumed to be internal flags.
duke@435: // Long term, we need to define a mechanism to specify which flags
duke@435: // are external/stable and change this function accordingly.
duke@435: bool Flag::is_external() const {
phh@3342:   return strcmp(kind, "{manageable}") == 0 || is_external_ext();
duke@435: }
duke@435: 
phh@3342: 
duke@435: // Length of format string (e.g. "%.1234s") for printing ccstr below
duke@435: #define FORMAT_BUFFER_LEN 16
duke@435: 
ikrylov@2123: void Flag::print_on(outputStream* st, bool withComments) {
ikrylov@2123:   st->print("%9s %-40s %c= ", type, name, (origin != DEFAULT ? ':' : ' '));
phh@1502:   if (is_bool())     st->print("%-16s", get_bool() ? "true" : "false");
phh@1502:   if (is_intx())     st->print("%-16ld", get_intx());
phh@1502:   if (is_uintx())    st->print("%-16lu", get_uintx());
phh@1502:   if (is_uint64_t()) st->print("%-16lu", get_uint64_t());
ikrylov@2123:   if (is_double())   st->print("%-16f", get_double());
ikrylov@2123: 
duke@435:   if (is_ccstr()) {
ikrylov@2123:      const char* cp = get_ccstr();
ikrylov@2123:      if (cp != NULL) {
ikrylov@2123:        const char* eol;
ikrylov@2123:        while ((eol = strchr(cp, '\n')) != NULL) {
ikrylov@2123:          char format_buffer[FORMAT_BUFFER_LEN];
ikrylov@2123:          size_t llen = pointer_delta(eol, cp, sizeof(char));
ikrylov@2123:          jio_snprintf(format_buffer, FORMAT_BUFFER_LEN,
never@538:                      "%%." SIZE_FORMAT "s", llen);
ikrylov@2123:          st->print(format_buffer, cp);
ikrylov@2123:          st->cr();
ikrylov@2123:          cp = eol+1;
ikrylov@2123:          st->print("%5s %-35s += ", "", name);
ikrylov@2123:        }
ikrylov@2123:        st->print("%-16s", cp);
ikrylov@2123:      }
ikrylov@2123:      else st->print("%-16s", "");
duke@435:   }
ikrylov@2123:   st->print("%-20s", kind);
ikrylov@2123:   if (withComments) {
ikrylov@2123: #ifndef PRODUCT
ikrylov@2123:     st->print("%s", doc );
ikrylov@2123: #endif
ikrylov@2123:   }
duke@435:   st->cr();
duke@435: }
duke@435: 
duke@435: void Flag::print_as_flag(outputStream* st) {
duke@435:   if (is_bool()) {
duke@435:     st->print("-XX:%s%s", get_bool() ? "+" : "-", name);
duke@435:   } else if (is_intx()) {
duke@435:     st->print("-XX:%s=" INTX_FORMAT, name, get_intx());
duke@435:   } else if (is_uintx()) {
duke@435:     st->print("-XX:%s=" UINTX_FORMAT, name, get_uintx());
phh@1502:   } else if (is_uint64_t()) {
phh@1502:     st->print("-XX:%s=" UINT64_FORMAT, name, get_uint64_t());
brutisso@3752:   } else if (is_double()) {
brutisso@3752:     st->print("-XX:%s=%f", name, get_double());
duke@435:   } else if (is_ccstr()) {
duke@435:     st->print("-XX:%s=", name);
never@538:     const char* cp = get_ccstr();
never@538:     if (cp != NULL) {
never@538:       // Need to turn embedded '\n's back into separate arguments
never@538:       // Not so efficient to print one character at a time,
never@538:       // but the choice is to do the transformation to a buffer
never@538:       // and print that.  And this need not be efficient.
never@538:       for (; *cp != '\0'; cp += 1) {
never@538:         switch (*cp) {
never@538:           default:
never@538:             st->print("%c", *cp);
never@538:             break;
never@538:           case '\n':
never@538:             st->print(" -XX:%s=", name);
never@538:             break;
never@538:         }
duke@435:       }
duke@435:     }
duke@435:   } else {
duke@435:     ShouldNotReachHere();
duke@435:   }
duke@435: }
duke@435: 
duke@435: // 4991491 do not "optimize out" the was_set false values: omitting them
duke@435: // tickles a Microsoft compiler bug causing flagTable to be malformed
duke@435: 
ikrylov@2123: #define RUNTIME_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{product}", DEFAULT },
ikrylov@2123: #define RUNTIME_PD_PRODUCT_FLAG_STRUCT(type, name, doc)     { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{pd product}", DEFAULT },
ikrylov@2123: #define RUNTIME_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{diagnostic}", DEFAULT },
ikrylov@2123: #define RUNTIME_EXPERIMENTAL_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{experimental}", DEFAULT },
ikrylov@2123: #define RUNTIME_MANAGEABLE_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{manageable}", DEFAULT },
ikrylov@2123: #define RUNTIME_PRODUCT_RW_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{product rw}", DEFAULT },
duke@435: 
duke@435: #ifdef PRODUCT
duke@435:   #define RUNTIME_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
duke@435:   #define RUNTIME_PD_DEVELOP_FLAG_STRUCT(type, name, doc)     /* flag is constant */
duke@435:   #define RUNTIME_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc)
duke@435: #else
ikrylov@2123:   #define RUNTIME_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "", DEFAULT },
ikrylov@2123:   #define RUNTIME_PD_DEVELOP_FLAG_STRUCT(type, name, doc)     { #type, XSTR(name), &name, doc, "{pd}", DEFAULT },
ikrylov@2123:   #define RUNTIME_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{notproduct}", DEFAULT },
duke@435: #endif
duke@435: 
coleenp@548: #ifdef _LP64
ikrylov@2123:   #define RUNTIME_LP64_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{lp64_product}", DEFAULT },
coleenp@548: #else
coleenp@548:   #define RUNTIME_LP64_PRODUCT_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
coleenp@548: #endif // _LP64
coleenp@548: 
ikrylov@2123: #define C1_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C1 product}", DEFAULT },
ikrylov@2123: #define C1_PD_PRODUCT_FLAG_STRUCT(type, name, doc)     { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C1 pd product}", DEFAULT },
duke@435: #ifdef PRODUCT
duke@435:   #define C1_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
duke@435:   #define C1_PD_DEVELOP_FLAG_STRUCT(type, name, doc)     /* flag is constant */
duke@435:   #define C1_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc)
duke@435: #else
ikrylov@2123:   #define C1_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{C1}", DEFAULT },
ikrylov@2123:   #define C1_PD_DEVELOP_FLAG_STRUCT(type, name, doc)     { #type, XSTR(name), &name, doc, "{C1 pd}", DEFAULT },
ikrylov@2123:   #define C1_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{C1 notproduct}", DEFAULT },
duke@435: #endif
duke@435: 
ikrylov@2123: #define C2_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C2 product}", DEFAULT },
ikrylov@2123: #define C2_PD_PRODUCT_FLAG_STRUCT(type, name, doc)     { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C2 pd product}", DEFAULT },
ikrylov@2123: #define C2_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C2 diagnostic}", DEFAULT },
ikrylov@2123: #define C2_EXPERIMENTAL_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C2 experimental}", DEFAULT },
duke@435: #ifdef PRODUCT
duke@435:   #define C2_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
duke@435:   #define C2_PD_DEVELOP_FLAG_STRUCT(type, name, doc)     /* flag is constant */
duke@435:   #define C2_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc)
duke@435: #else
ikrylov@2123:   #define C2_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{C2}", DEFAULT },
ikrylov@2123:   #define C2_PD_DEVELOP_FLAG_STRUCT(type, name, doc)     { #type, XSTR(name), &name, doc, "{C2 pd}", DEFAULT },
ikrylov@2123:   #define C2_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{C2 notproduct}", DEFAULT },
duke@435: #endif
duke@435: 
twisti@4020: #define ARCH_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{ARCH product}", DEFAULT },
twisti@4020: #define ARCH_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{ARCH diagnostic}", DEFAULT },
twisti@4020: #define ARCH_EXPERIMENTAL_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{ARCH experimental}", DEFAULT },
twisti@4020: #ifdef PRODUCT
twisti@4020:   #define ARCH_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
twisti@4020:   #define ARCH_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc)
twisti@4020: #else
twisti@4020:   #define ARCH_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{ARCH}", DEFAULT },
twisti@4020:   #define ARCH_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{ARCH notproduct}", DEFAULT },
twisti@4020: #endif
twisti@4020: 
ikrylov@2123: #define SHARK_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{Shark product}", DEFAULT },
ikrylov@2123: #define SHARK_PD_PRODUCT_FLAG_STRUCT(type, name, doc)     { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{Shark pd product}", DEFAULT },
ikrylov@2123: #define SHARK_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{Shark diagnostic}", DEFAULT },
twisti@2047: #ifdef PRODUCT
twisti@2047:   #define SHARK_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
twisti@2047:   #define SHARK_PD_DEVELOP_FLAG_STRUCT(type, name, doc)     /* flag is constant */
twisti@2047:   #define SHARK_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc)
twisti@2047: #else
ikrylov@2123:   #define SHARK_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{Shark}", DEFAULT },
ikrylov@2123:   #define SHARK_PD_DEVELOP_FLAG_STRUCT(type, name, doc)     { #type, XSTR(name), &name, doc, "{Shark pd}", DEFAULT },
ikrylov@2123:   #define SHARK_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{Shark notproduct}", DEFAULT },
twisti@2047: #endif
duke@435: 
duke@435: static Flag flagTable[] = {
phh@3287:  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)
duke@435:  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)
jprovino@4542: #if INCLUDE_ALL_GCS
ysr@785:  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)
jprovino@4542: #endif // INCLUDE_ALL_GCS
duke@435: #ifdef COMPILER1
duke@435:  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: #endif
duke@435: #ifdef COMPILER2
never@1515:  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)
duke@435: #endif
twisti@2047: #ifdef SHARK
twisti@2047:  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)
twisti@2047: #endif
twisti@4020:  ARCH_FLAGS(ARCH_DEVELOP_FLAG_STRUCT, ARCH_PRODUCT_FLAG_STRUCT, ARCH_DIAGNOSTIC_FLAG_STRUCT, ARCH_EXPERIMENTAL_FLAG_STRUCT, ARCH_NOTPRODUCT_FLAG_STRUCT)
phh@3303:  FLAGTABLE_EXT
duke@435:  {0, NULL, NULL}
duke@435: };
duke@435: 
duke@435: Flag* Flag::flags = flagTable;
duke@435: size_t Flag::numFlags = (sizeof(flagTable) / sizeof(Flag));
duke@435: 
tamao@5343: inline bool str_equal(const char* s, const char* q, size_t len) {
duke@435:   // s is null terminated, q is not!
duke@435:   if (strlen(s) != (unsigned int) len) return false;
duke@435:   return strncmp(s, q, len) == 0;
duke@435: }
duke@435: 
jmelvin@3650: // Search the flag table for a named flag
tamao@5343: Flag* Flag::find_flag(const char* name, size_t length, bool allow_locked) {
jmelvin@3650:   for (Flag* current = &flagTable[0]; current->name != NULL; current++) {
duke@435:     if (str_equal(current->name, name, length)) {
jmelvin@3650:       // Found a matching entry.  Report locked flags only if allowed.
duke@435:       if (!(current->is_unlocked() || current->is_unlocker())) {
jmelvin@3650:         if (!allow_locked) {
jmelvin@3650:           // disable use of locked flags, e.g. diagnostic, experimental,
jmelvin@3650:           // commercial... until they are explicitly unlocked
jmelvin@3650:           return NULL;
jmelvin@3650:         }
duke@435:       }
duke@435:       return current;
duke@435:     }
duke@435:   }
jmelvin@3650:   // Flag name is not in the flag table
duke@435:   return NULL;
duke@435: }
duke@435: 
tamao@5343: // Compute string similarity based on Dice's coefficient
tamao@5343: static float str_similar(const char* str1, const char* str2, size_t len2) {
tamao@5343:   int len1 = (int) strlen(str1);
tamao@5343:   int total = len1 + (int) len2;
tamao@5343: 
tamao@5343:   int hit = 0;
tamao@5343: 
tamao@5343:   for (int i = 0; i < len1 -1; ++i) {
tamao@5343:     for (int j = 0; j < (int) len2 -1; ++j) {
tamao@5343:       if ((str1[i] == str2[j]) && (str1[i+1] == str2[j+1])) {
tamao@5343:         ++hit;
tamao@5343:         break;
tamao@5343:       }
tamao@5343:     }
tamao@5343:   }
tamao@5343: 
tamao@5343:   return 2.0f * (float) hit / (float) total;
tamao@5343: }
tamao@5343: 
tamao@5343: Flag* Flag::fuzzy_match(const char* name, size_t length, bool allow_locked) {
tamao@5343:   float VMOptionsFuzzyMatchSimilarity = 0.7f;
tamao@5343:   Flag* match = NULL;
tamao@5343:   float score;
tamao@5343:   float max_score = -1;
tamao@5343: 
tamao@5343:   for (Flag* current = &flagTable[0]; current->name != NULL; current++) {
tamao@5343:     score = str_similar(current->name, name, length);
tamao@5343:     if (score > max_score) {
tamao@5343:       max_score = score;
tamao@5343:       match = current;
tamao@5343:     }
tamao@5343:   }
tamao@5343: 
tamao@5343:   if (!(match->is_unlocked() || match->is_unlocker())) {
tamao@5343:     if (!allow_locked) {
tamao@5343:       return NULL;
tamao@5343:     }
tamao@5343:   }
tamao@5343: 
tamao@5343:   if (max_score < VMOptionsFuzzyMatchSimilarity) {
tamao@5343:     return NULL;
tamao@5343:   }
tamao@5343: 
tamao@5343:   return match;
tamao@5343: }
tamao@5343: 
duke@435: // Returns the address of the index'th element
duke@435: static Flag* address_of_flag(CommandLineFlagWithType flag) {
duke@435:   assert((size_t)flag < Flag::numFlags, "bad command line flag index");
duke@435:   return &Flag::flags[flag];
duke@435: }
duke@435: 
duke@435: bool CommandLineFlagsEx::is_default(CommandLineFlag flag) {
duke@435:   assert((size_t)flag < Flag::numFlags, "bad command line flag index");
duke@435:   Flag* f = &Flag::flags[flag];
duke@435:   return (f->origin == DEFAULT);
duke@435: }
duke@435: 
jmasa@448: bool CommandLineFlagsEx::is_ergo(CommandLineFlag flag) {
jmasa@448:   assert((size_t)flag < Flag::numFlags, "bad command line flag index");
jmasa@448:   Flag* f = &Flag::flags[flag];
jmasa@448:   return (f->origin == ERGONOMIC);
jmasa@448: }
jmasa@448: 
jmasa@448: bool CommandLineFlagsEx::is_cmdline(CommandLineFlag flag) {
jmasa@448:   assert((size_t)flag < Flag::numFlags, "bad command line flag index");
jmasa@448:   Flag* f = &Flag::flags[flag];
jmasa@448:   return (f->origin == COMMAND_LINE);
jmasa@448: }
jmasa@448: 
duke@435: bool CommandLineFlags::wasSetOnCmdline(const char* name, bool* value) {
duke@435:   Flag* result = Flag::find_flag((char*)name, strlen(name));
duke@435:   if (result == NULL) return false;
duke@435:   *value = (result->origin == COMMAND_LINE);
duke@435:   return true;
duke@435: }
duke@435: 
duke@435: bool CommandLineFlags::boolAt(char* name, size_t len, bool* value) {
duke@435:   Flag* result = Flag::find_flag(name, len);
duke@435:   if (result == NULL) return false;
duke@435:   if (!result->is_bool()) return false;
duke@435:   *value = result->get_bool();
duke@435:   return true;
duke@435: }
duke@435: 
duke@435: bool CommandLineFlags::boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin) {
duke@435:   Flag* result = Flag::find_flag(name, len);
duke@435:   if (result == NULL) return false;
duke@435:   if (!result->is_bool()) return false;
duke@435:   bool old_value = result->get_bool();
duke@435:   result->set_bool(*value);
duke@435:   *value = old_value;
duke@435:   result->origin = origin;
duke@435:   return true;
duke@435: }
duke@435: 
duke@435: void CommandLineFlagsEx::boolAtPut(CommandLineFlagWithType flag, bool value, FlagValueOrigin origin) {
duke@435:   Flag* faddr = address_of_flag(flag);
duke@435:   guarantee(faddr != NULL && faddr->is_bool(), "wrong flag type");
duke@435:   faddr->set_bool(value);
duke@435:   faddr->origin = origin;
duke@435: }
duke@435: 
duke@435: bool CommandLineFlags::intxAt(char* name, size_t len, intx* value) {
duke@435:   Flag* result = Flag::find_flag(name, len);
duke@435:   if (result == NULL) return false;
duke@435:   if (!result->is_intx()) return false;
duke@435:   *value = result->get_intx();
duke@435:   return true;
duke@435: }
duke@435: 
duke@435: bool CommandLineFlags::intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin) {
duke@435:   Flag* result = Flag::find_flag(name, len);
duke@435:   if (result == NULL) return false;
duke@435:   if (!result->is_intx()) return false;
duke@435:   intx old_value = result->get_intx();
duke@435:   result->set_intx(*value);
duke@435:   *value = old_value;
duke@435:   result->origin = origin;
duke@435:   return true;
duke@435: }
duke@435: 
duke@435: void CommandLineFlagsEx::intxAtPut(CommandLineFlagWithType flag, intx value, FlagValueOrigin origin) {
duke@435:   Flag* faddr = address_of_flag(flag);
duke@435:   guarantee(faddr != NULL && faddr->is_intx(), "wrong flag type");
duke@435:   faddr->set_intx(value);
duke@435:   faddr->origin = origin;
duke@435: }
duke@435: 
duke@435: bool CommandLineFlags::uintxAt(char* name, size_t len, uintx* value) {
duke@435:   Flag* result = Flag::find_flag(name, len);
duke@435:   if (result == NULL) return false;
duke@435:   if (!result->is_uintx()) return false;
duke@435:   *value = result->get_uintx();
duke@435:   return true;
duke@435: }
duke@435: 
duke@435: bool CommandLineFlags::uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin) {
duke@435:   Flag* result = Flag::find_flag(name, len);
duke@435:   if (result == NULL) return false;
duke@435:   if (!result->is_uintx()) return false;
duke@435:   uintx old_value = result->get_uintx();
duke@435:   result->set_uintx(*value);
duke@435:   *value = old_value;
duke@435:   result->origin = origin;
duke@435:   return true;
duke@435: }
duke@435: 
duke@435: void CommandLineFlagsEx::uintxAtPut(CommandLineFlagWithType flag, uintx value, FlagValueOrigin origin) {
duke@435:   Flag* faddr = address_of_flag(flag);
duke@435:   guarantee(faddr != NULL && faddr->is_uintx(), "wrong flag type");
duke@435:   faddr->set_uintx(value);
duke@435:   faddr->origin = origin;
duke@435: }
duke@435: 
phh@1499: bool CommandLineFlags::uint64_tAt(char* name, size_t len, uint64_t* value) {
phh@1499:   Flag* result = Flag::find_flag(name, len);
phh@1499:   if (result == NULL) return false;
phh@1499:   if (!result->is_uint64_t()) return false;
phh@1499:   *value = result->get_uint64_t();
phh@1499:   return true;
phh@1499: }
phh@1499: 
phh@1499: bool CommandLineFlags::uint64_tAtPut(char* name, size_t len, uint64_t* value, FlagValueOrigin origin) {
phh@1499:   Flag* result = Flag::find_flag(name, len);
phh@1499:   if (result == NULL) return false;
phh@1499:   if (!result->is_uint64_t()) return false;
phh@1499:   uint64_t old_value = result->get_uint64_t();
phh@1499:   result->set_uint64_t(*value);
phh@1499:   *value = old_value;
phh@1499:   result->origin = origin;
phh@1499:   return true;
phh@1499: }
phh@1499: 
phh@1499: void CommandLineFlagsEx::uint64_tAtPut(CommandLineFlagWithType flag, uint64_t value, FlagValueOrigin origin) {
phh@1499:   Flag* faddr = address_of_flag(flag);
phh@1499:   guarantee(faddr != NULL && faddr->is_uint64_t(), "wrong flag type");
phh@1499:   faddr->set_uint64_t(value);
phh@1499:   faddr->origin = origin;
phh@1499: }
phh@1499: 
duke@435: bool CommandLineFlags::doubleAt(char* name, size_t len, double* value) {
duke@435:   Flag* result = Flag::find_flag(name, len);
duke@435:   if (result == NULL) return false;
duke@435:   if (!result->is_double()) return false;
duke@435:   *value = result->get_double();
duke@435:   return true;
duke@435: }
duke@435: 
duke@435: bool CommandLineFlags::doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin) {
duke@435:   Flag* result = Flag::find_flag(name, len);
duke@435:   if (result == NULL) return false;
duke@435:   if (!result->is_double()) return false;
duke@435:   double old_value = result->get_double();
duke@435:   result->set_double(*value);
duke@435:   *value = old_value;
duke@435:   result->origin = origin;
duke@435:   return true;
duke@435: }
duke@435: 
duke@435: void CommandLineFlagsEx::doubleAtPut(CommandLineFlagWithType flag, double value, FlagValueOrigin origin) {
duke@435:   Flag* faddr = address_of_flag(flag);
duke@435:   guarantee(faddr != NULL && faddr->is_double(), "wrong flag type");
duke@435:   faddr->set_double(value);
duke@435:   faddr->origin = origin;
duke@435: }
duke@435: 
duke@435: bool CommandLineFlags::ccstrAt(char* name, size_t len, ccstr* value) {
duke@435:   Flag* result = Flag::find_flag(name, len);
duke@435:   if (result == NULL) return false;
duke@435:   if (!result->is_ccstr()) return false;
duke@435:   *value = result->get_ccstr();
duke@435:   return true;
duke@435: }
duke@435: 
duke@435: // Contract:  Flag will make private copy of the incoming value.
duke@435: // Outgoing value is always malloc-ed, and caller MUST call free.
duke@435: bool CommandLineFlags::ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin) {
duke@435:   Flag* result = Flag::find_flag(name, len);
duke@435:   if (result == NULL) return false;
duke@435:   if (!result->is_ccstr()) return false;
duke@435:   ccstr old_value = result->get_ccstr();
never@805:   char* new_value = NULL;
never@805:   if (*value != NULL) {
zgu@3900:     new_value = NEW_C_HEAP_ARRAY(char, strlen(*value)+1, mtInternal);
never@805:     strcpy(new_value, *value);
never@805:   }
duke@435:   result->set_ccstr(new_value);
duke@435:   if (result->origin == DEFAULT && old_value != NULL) {
duke@435:     // Prior value is NOT heap allocated, but was a literal constant.
zgu@3900:     char* old_value_to_free = NEW_C_HEAP_ARRAY(char, strlen(old_value)+1, mtInternal);
duke@435:     strcpy(old_value_to_free, old_value);
duke@435:     old_value = old_value_to_free;
duke@435:   }
duke@435:   *value = old_value;
duke@435:   result->origin = origin;
duke@435:   return true;
duke@435: }
duke@435: 
duke@435: // Contract:  Flag will make private copy of the incoming value.
duke@435: void CommandLineFlagsEx::ccstrAtPut(CommandLineFlagWithType flag, ccstr value, FlagValueOrigin origin) {
duke@435:   Flag* faddr = address_of_flag(flag);
duke@435:   guarantee(faddr != NULL && faddr->is_ccstr(), "wrong flag type");
duke@435:   ccstr old_value = faddr->get_ccstr();
zgu@3900:   char* new_value = NEW_C_HEAP_ARRAY(char, strlen(value)+1, mtInternal);
duke@435:   strcpy(new_value, value);
duke@435:   faddr->set_ccstr(new_value);
duke@435:   if (faddr->origin != DEFAULT && old_value != NULL) {
duke@435:     // Prior value is heap allocated so free it.
zgu@3900:     FREE_C_HEAP_ARRAY(char, old_value, mtInternal);
duke@435:   }
duke@435:   faddr->origin = origin;
duke@435: }
duke@435: 
duke@435: extern "C" {
duke@435:   static int compare_flags(const void* void_a, const void* void_b) {
duke@435:     return strcmp((*((Flag**) void_a))->name, (*((Flag**) void_b))->name);
duke@435:   }
duke@435: }
duke@435: 
fparain@3402: void CommandLineFlags::printSetFlags(outputStream* out) {
duke@435:   // Print which flags were set on the command line
duke@435:   // note: this method is called before the thread structure is in place
duke@435:   //       which means resource allocation cannot be used.
duke@435: 
duke@435:   // Compute size
duke@435:   int length= 0;
duke@435:   while (flagTable[length].name != NULL) length++;
duke@435: 
duke@435:   // Sort
zgu@3900:   Flag** array = NEW_C_HEAP_ARRAY(Flag*, length, mtInternal);
duke@435:   for (int index = 0; index < length; index++) {
duke@435:     array[index] = &flagTable[index];
duke@435:   }
duke@435:   qsort(array, length, sizeof(Flag*), compare_flags);
duke@435: 
duke@435:   // Print
duke@435:   for (int i = 0; i < length; i++) {
duke@435:     if (array[i]->origin /* naked field! */) {
fparain@3402:       array[i]->print_as_flag(out);
fparain@3402:       out->print(" ");
duke@435:     }
duke@435:   }
fparain@3402:   out->cr();
zgu@3900:   FREE_C_HEAP_ARRAY(Flag*, array, mtInternal);
duke@435: }
duke@435: 
duke@435: #ifndef PRODUCT
duke@435: 
duke@435: 
duke@435: void CommandLineFlags::verify() {
duke@435:   assert(Arguments::check_vm_args_consistency(), "Some flag settings conflict");
duke@435: }
duke@435: 
kvn@1585: #endif // PRODUCT
kvn@1585: 
fparain@3402: void CommandLineFlags::printFlags(outputStream* out, bool withComments) {
duke@435:   // Print the flags sorted by name
duke@435:   // note: this method is called before the thread structure is in place
duke@435:   //       which means resource allocation cannot be used.
duke@435: 
duke@435:   // Compute size
duke@435:   int length= 0;
duke@435:   while (flagTable[length].name != NULL) length++;
duke@435: 
duke@435:   // Sort
zgu@3900:   Flag** array = NEW_C_HEAP_ARRAY(Flag*, length, mtInternal);
duke@435:   for (int index = 0; index < length; index++) {
duke@435:     array[index] = &flagTable[index];
duke@435:   }
duke@435:   qsort(array, length, sizeof(Flag*), compare_flags);
duke@435: 
duke@435:   // Print
fparain@3402:   out->print_cr("[Global flags]");
duke@435:   for (int i = 0; i < length; i++) {
duke@435:     if (array[i]->is_unlocked()) {
fparain@3402:       array[i]->print_on(out, withComments);
duke@435:     }
duke@435:   }
zgu@3900:   FREE_C_HEAP_ARRAY(Flag*, array, mtInternal);
duke@435: }