Mercurial > hg > graal-compiler
view src/share/vm/runtime/globals.cpp @ 2059:9508a52cbd32
Add deoptimization blob support.
author | Thomas Wuerthinger <wuerthinger@ssw.jku.at> |
---|---|
date | Wed, 19 Jan 2011 15:48:15 +0100 |
parents | f95d63e2154a |
children | ed69575596ac |
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/* * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #include "precompiled.hpp" #include "memory/allocation.inline.hpp" #include "oops/oop.inline.hpp" #include "runtime/arguments.hpp" #include "runtime/globals.hpp" #include "runtime/globals_extension.hpp" #include "utilities/ostream.hpp" #include "utilities/top.hpp" #ifndef SERIALGC #include "gc_implementation/g1/g1_globals.hpp" #endif #ifdef COMPILER1 #include "c1/c1_globals.hpp" #endif #ifdef COMPILER2 #include "opto/c2_globals.hpp" #endif #ifdef SHARK #include "shark/shark_globals.hpp" #endif RUNTIME_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PD_DEVELOPER_FLAG, \ MATERIALIZE_PRODUCT_FLAG, MATERIALIZE_PD_PRODUCT_FLAG, \ MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_EXPERIMENTAL_FLAG, \ MATERIALIZE_NOTPRODUCT_FLAG, \ MATERIALIZE_MANAGEABLE_FLAG, MATERIALIZE_PRODUCT_RW_FLAG, \ MATERIALIZE_LP64_PRODUCT_FLAG) RUNTIME_OS_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PD_DEVELOPER_FLAG, \ MATERIALIZE_PRODUCT_FLAG, MATERIALIZE_PD_PRODUCT_FLAG, \ MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_NOTPRODUCT_FLAG) bool Flag::is_unlocker() const { return strcmp(name, "UnlockDiagnosticVMOptions") == 0 || strcmp(name, "UnlockExperimentalVMOptions") == 0; } bool Flag::is_unlocked() const { if (strcmp(kind, "{diagnostic}") == 0) { return UnlockDiagnosticVMOptions; } else if (strcmp(kind, "{experimental}") == 0 || strcmp(kind, "{C2 experimental}") == 0) { return UnlockExperimentalVMOptions; } else { return true; } } bool Flag::is_writeable() const { return (strcmp(kind, "{manageable}") == 0 || strcmp(kind, "{product rw}") == 0); } // All flags except "manageable" are assumed internal flags. // Long term, we need to define a mechanism to specify which flags // are external/stable and change this function accordingly. bool Flag::is_external() const { return (strcmp(kind, "{manageable}") == 0); } // Length of format string (e.g. "%.1234s") for printing ccstr below #define FORMAT_BUFFER_LEN 16 void Flag::print_on(outputStream* st, bool withComments) { st->print("%9s %-40s %c= ", type, name, (origin != DEFAULT ? ':' : ' ')); if (is_bool()) st->print("%-16s", get_bool() ? "true" : "false"); if (is_intx()) st->print("%-16ld", get_intx()); if (is_uintx()) st->print("%-16lu", get_uintx()); if (is_uint64_t()) st->print("%-16lu", get_uint64_t()); if (is_double()) st->print("%-16f", get_double()); if (is_ccstr()) { const char* cp = get_ccstr(); if (cp != NULL) { const char* eol; while ((eol = strchr(cp, '\n')) != NULL) { char format_buffer[FORMAT_BUFFER_LEN]; size_t llen = pointer_delta(eol, cp, sizeof(char)); jio_snprintf(format_buffer, FORMAT_BUFFER_LEN, "%%." SIZE_FORMAT "s", llen); st->print(format_buffer, cp); st->cr(); cp = eol+1; st->print("%5s %-35s += ", "", name); } st->print("%-16s", cp); } else st->print("%-16s", ""); } st->print("%-20s", kind); if (withComments) { #ifndef PRODUCT st->print("%s", doc ); #endif } st->cr(); } void Flag::print_as_flag(outputStream* st) { if (is_bool()) { st->print("-XX:%s%s", get_bool() ? "+" : "-", name); } else if (is_intx()) { st->print("-XX:%s=" INTX_FORMAT, name, get_intx()); } else if (is_uintx()) { st->print("-XX:%s=" UINTX_FORMAT, name, get_uintx()); } else if (is_uint64_t()) { st->print("-XX:%s=" UINT64_FORMAT, name, get_uint64_t()); } else if (is_ccstr()) { st->print("-XX:%s=", name); const char* cp = get_ccstr(); if (cp != NULL) { // Need to turn embedded '\n's back into separate arguments // Not so efficient to print one character at a time, // but the choice is to do the transformation to a buffer // and print that. And this need not be efficient. for (; *cp != '\0'; cp += 1) { switch (*cp) { default: st->print("%c", *cp); break; case '\n': st->print(" -XX:%s=", name); break; } } } } else { ShouldNotReachHere(); } } // 4991491 do not "optimize out" the was_set false values: omitting them // tickles a Microsoft compiler bug causing flagTable to be malformed #define RUNTIME_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{product}", DEFAULT }, #define RUNTIME_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{pd product}", DEFAULT }, #define RUNTIME_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{diagnostic}", DEFAULT }, #define RUNTIME_EXPERIMENTAL_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{experimental}", DEFAULT }, #define RUNTIME_MANAGEABLE_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{manageable}", DEFAULT }, #define RUNTIME_PRODUCT_RW_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{product rw}", DEFAULT }, #ifdef PRODUCT #define RUNTIME_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */ #define RUNTIME_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */ #define RUNTIME_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) #else #define RUNTIME_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "", DEFAULT }, #define RUNTIME_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, doc, "{pd}", DEFAULT }, #define RUNTIME_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{notproduct}", DEFAULT }, #endif #ifdef _LP64 #define RUNTIME_LP64_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{lp64_product}", DEFAULT }, #else #define RUNTIME_LP64_PRODUCT_FLAG_STRUCT(type, name, value, doc) /* flag is constant */ #endif // _LP64 #define C1_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C1 product}", DEFAULT }, #define C1_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C1 pd product}", DEFAULT }, #ifdef PRODUCT #define C1_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */ #define C1_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */ #define C1_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) #else #define C1_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{C1}", DEFAULT }, #define C1_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, doc, "{C1 pd}", DEFAULT }, #define C1_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{C1 notproduct}", DEFAULT }, #endif #define C2_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C2 product}", DEFAULT }, #define C2_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C2 pd product}", DEFAULT }, #define C2_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C2 diagnostic}", DEFAULT }, #define C2_EXPERIMENTAL_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C2 experimental}", DEFAULT }, #ifdef PRODUCT #define C2_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */ #define C2_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */ #define C2_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) #else #define C2_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{C2}", DEFAULT }, #define C2_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, doc, "{C2 pd}", DEFAULT }, #define C2_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{C2 notproduct}", DEFAULT }, #endif #define SHARK_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{Shark product}", DEFAULT }, #define SHARK_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{Shark pd product}", DEFAULT }, #define SHARK_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{Shark diagnostic}", DEFAULT }, #ifdef PRODUCT #define SHARK_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */ #define SHARK_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */ #define SHARK_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) #else #define SHARK_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{Shark}", DEFAULT }, #define SHARK_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, doc, "{Shark pd}", DEFAULT }, #define SHARK_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{Shark notproduct}", DEFAULT }, #endif static Flag flagTable[] = { 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) 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) #ifndef SERIALGC 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) #endif // SERIALGC #ifdef COMPILER1 C1_FLAGS(C1_DEVELOP_FLAG_STRUCT, C1_PD_DEVELOP_FLAG_STRUCT, C1_PRODUCT_FLAG_STRUCT, C1_PD_PRODUCT_FLAG_STRUCT, C1_NOTPRODUCT_FLAG_STRUCT) #endif #ifdef COMPILER2 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) #endif #ifdef SHARK 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) #endif {0, NULL, NULL} }; Flag* Flag::flags = flagTable; size_t Flag::numFlags = (sizeof(flagTable) / sizeof(Flag)); inline bool str_equal(const char* s, char* q, size_t len) { // s is null terminated, q is not! if (strlen(s) != (unsigned int) len) return false; return strncmp(s, q, len) == 0; } Flag* Flag::find_flag(char* name, size_t length) { for (Flag* current = &flagTable[0]; current->name; current++) { if (str_equal(current->name, name, length)) { if (!(current->is_unlocked() || current->is_unlocker())) { // disable use of diagnostic or experimental flags until they // are explicitly unlocked return NULL; } return current; } } return NULL; } // Returns the address of the index'th element static Flag* address_of_flag(CommandLineFlagWithType flag) { assert((size_t)flag < Flag::numFlags, "bad command line flag index"); return &Flag::flags[flag]; } bool CommandLineFlagsEx::is_default(CommandLineFlag flag) { assert((size_t)flag < Flag::numFlags, "bad command line flag index"); Flag* f = &Flag::flags[flag]; return (f->origin == DEFAULT); } bool CommandLineFlagsEx::is_ergo(CommandLineFlag flag) { assert((size_t)flag < Flag::numFlags, "bad command line flag index"); Flag* f = &Flag::flags[flag]; return (f->origin == ERGONOMIC); } bool CommandLineFlagsEx::is_cmdline(CommandLineFlag flag) { assert((size_t)flag < Flag::numFlags, "bad command line flag index"); Flag* f = &Flag::flags[flag]; return (f->origin == COMMAND_LINE); } bool CommandLineFlags::wasSetOnCmdline(const char* name, bool* value) { Flag* result = Flag::find_flag((char*)name, strlen(name)); if (result == NULL) return false; *value = (result->origin == COMMAND_LINE); return true; } bool CommandLineFlags::boolAt(char* name, size_t len, bool* value) { Flag* result = Flag::find_flag(name, len); if (result == NULL) return false; if (!result->is_bool()) return false; *value = result->get_bool(); return true; } bool CommandLineFlags::boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin) { Flag* result = Flag::find_flag(name, len); if (result == NULL) return false; if (!result->is_bool()) return false; bool old_value = result->get_bool(); result->set_bool(*value); *value = old_value; result->origin = origin; return true; } void CommandLineFlagsEx::boolAtPut(CommandLineFlagWithType flag, bool value, FlagValueOrigin origin) { Flag* faddr = address_of_flag(flag); guarantee(faddr != NULL && faddr->is_bool(), "wrong flag type"); faddr->set_bool(value); faddr->origin = origin; } bool CommandLineFlags::intxAt(char* name, size_t len, intx* value) { Flag* result = Flag::find_flag(name, len); if (result == NULL) return false; if (!result->is_intx()) return false; *value = result->get_intx(); return true; } bool CommandLineFlags::intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin) { Flag* result = Flag::find_flag(name, len); if (result == NULL) return false; if (!result->is_intx()) return false; intx old_value = result->get_intx(); result->set_intx(*value); *value = old_value; result->origin = origin; return true; } void CommandLineFlagsEx::intxAtPut(CommandLineFlagWithType flag, intx value, FlagValueOrigin origin) { Flag* faddr = address_of_flag(flag); guarantee(faddr != NULL && faddr->is_intx(), "wrong flag type"); faddr->set_intx(value); faddr->origin = origin; } bool CommandLineFlags::uintxAt(char* name, size_t len, uintx* value) { Flag* result = Flag::find_flag(name, len); if (result == NULL) return false; if (!result->is_uintx()) return false; *value = result->get_uintx(); return true; } bool CommandLineFlags::uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin) { Flag* result = Flag::find_flag(name, len); if (result == NULL) return false; if (!result->is_uintx()) return false; uintx old_value = result->get_uintx(); result->set_uintx(*value); *value = old_value; result->origin = origin; return true; } void CommandLineFlagsEx::uintxAtPut(CommandLineFlagWithType flag, uintx value, FlagValueOrigin origin) { Flag* faddr = address_of_flag(flag); guarantee(faddr != NULL && faddr->is_uintx(), "wrong flag type"); faddr->set_uintx(value); faddr->origin = origin; } bool CommandLineFlags::uint64_tAt(char* name, size_t len, uint64_t* value) { Flag* result = Flag::find_flag(name, len); if (result == NULL) return false; if (!result->is_uint64_t()) return false; *value = result->get_uint64_t(); return true; } bool CommandLineFlags::uint64_tAtPut(char* name, size_t len, uint64_t* value, FlagValueOrigin origin) { Flag* result = Flag::find_flag(name, len); if (result == NULL) return false; if (!result->is_uint64_t()) return false; uint64_t old_value = result->get_uint64_t(); result->set_uint64_t(*value); *value = old_value; result->origin = origin; return true; } void CommandLineFlagsEx::uint64_tAtPut(CommandLineFlagWithType flag, uint64_t value, FlagValueOrigin origin) { Flag* faddr = address_of_flag(flag); guarantee(faddr != NULL && faddr->is_uint64_t(), "wrong flag type"); faddr->set_uint64_t(value); faddr->origin = origin; } bool CommandLineFlags::doubleAt(char* name, size_t len, double* value) { Flag* result = Flag::find_flag(name, len); if (result == NULL) return false; if (!result->is_double()) return false; *value = result->get_double(); return true; } bool CommandLineFlags::doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin) { Flag* result = Flag::find_flag(name, len); if (result == NULL) return false; if (!result->is_double()) return false; double old_value = result->get_double(); result->set_double(*value); *value = old_value; result->origin = origin; return true; } void CommandLineFlagsEx::doubleAtPut(CommandLineFlagWithType flag, double value, FlagValueOrigin origin) { Flag* faddr = address_of_flag(flag); guarantee(faddr != NULL && faddr->is_double(), "wrong flag type"); faddr->set_double(value); faddr->origin = origin; } bool CommandLineFlags::ccstrAt(char* name, size_t len, ccstr* value) { Flag* result = Flag::find_flag(name, len); if (result == NULL) return false; if (!result->is_ccstr()) return false; *value = result->get_ccstr(); return true; } // Contract: Flag will make private copy of the incoming value. // Outgoing value is always malloc-ed, and caller MUST call free. bool CommandLineFlags::ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin) { Flag* result = Flag::find_flag(name, len); if (result == NULL) return false; if (!result->is_ccstr()) return false; ccstr old_value = result->get_ccstr(); char* new_value = NULL; if (*value != NULL) { new_value = NEW_C_HEAP_ARRAY(char, strlen(*value)+1); strcpy(new_value, *value); } result->set_ccstr(new_value); if (result->origin == DEFAULT && old_value != NULL) { // Prior value is NOT heap allocated, but was a literal constant. char* old_value_to_free = NEW_C_HEAP_ARRAY(char, strlen(old_value)+1); strcpy(old_value_to_free, old_value); old_value = old_value_to_free; } *value = old_value; result->origin = origin; return true; } // Contract: Flag will make private copy of the incoming value. void CommandLineFlagsEx::ccstrAtPut(CommandLineFlagWithType flag, ccstr value, FlagValueOrigin origin) { Flag* faddr = address_of_flag(flag); guarantee(faddr != NULL && faddr->is_ccstr(), "wrong flag type"); ccstr old_value = faddr->get_ccstr(); char* new_value = NEW_C_HEAP_ARRAY(char, strlen(value)+1); strcpy(new_value, value); faddr->set_ccstr(new_value); if (faddr->origin != DEFAULT && old_value != NULL) { // Prior value is heap allocated so free it. FREE_C_HEAP_ARRAY(char, old_value); } faddr->origin = origin; } extern "C" { static int compare_flags(const void* void_a, const void* void_b) { return strcmp((*((Flag**) void_a))->name, (*((Flag**) void_b))->name); } } void CommandLineFlags::printSetFlags() { // Print which flags were set on the command line // note: this method is called before the thread structure is in place // which means resource allocation cannot be used. // Compute size int length= 0; while (flagTable[length].name != NULL) length++; // Sort Flag** array = NEW_C_HEAP_ARRAY(Flag*, length); for (int index = 0; index < length; index++) { array[index] = &flagTable[index]; } qsort(array, length, sizeof(Flag*), compare_flags); // Print for (int i = 0; i < length; i++) { if (array[i]->origin /* naked field! */) { array[i]->print_as_flag(tty); tty->print(" "); } } tty->cr(); FREE_C_HEAP_ARRAY(Flag*, array); } #ifndef PRODUCT void CommandLineFlags::verify() { assert(Arguments::check_vm_args_consistency(), "Some flag settings conflict"); } #endif // PRODUCT void CommandLineFlags::printFlags(bool withComments) { // Print the flags sorted by name // note: this method is called before the thread structure is in place // which means resource allocation cannot be used. // Compute size int length= 0; while (flagTable[length].name != NULL) length++; // Sort Flag** array = NEW_C_HEAP_ARRAY(Flag*, length); for (int index = 0; index < length; index++) { array[index] = &flagTable[index]; } qsort(array, length, sizeof(Flag*), compare_flags); // Print tty->print_cr("[Global flags]"); for (int i = 0; i < length; i++) { if (array[i]->is_unlocked()) { array[i]->print_on(tty, withComments); } } FREE_C_HEAP_ARRAY(Flag*, array); }