Mercurial > hg > truffle
diff src/share/vm/runtime/globals.cpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
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children | 183f41cf8bfe |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/runtime/globals.cpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,429 @@ +/* + * Copyright 1997-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +# include "incls/_precompiled.incl" +# include "incls/_globals.cpp.incl" + + +RUNTIME_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PD_DEVELOPER_FLAG, \ + MATERIALIZE_PRODUCT_FLAG, MATERIALIZE_PD_PRODUCT_FLAG, \ + MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_NOTPRODUCT_FLAG, \ + MATERIALIZE_MANAGEABLE_FLAG, MATERIALIZE_PRODUCT_RW_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; +} + +bool Flag::is_unlocked() const { + if (strcmp(kind, "{diagnostic}") == 0) { + return UnlockDiagnosticVMOptions; + } 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) { + st->print("%5s %-35s %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_ccstr()) { + const char* cp = get_ccstr(); + 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); + } + st->print(" %s", kind); + 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_ccstr()) { + st->print("-XX:%s=", name); + // 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 (const char* cp = get_ccstr(); *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, "{product}", DEFAULT }, +#define RUNTIME_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{pd product}", DEFAULT }, +#define RUNTIME_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{diagnostic}", DEFAULT }, +#define RUNTIME_MANAGEABLE_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{manageable}", DEFAULT }, +#define RUNTIME_PRODUCT_RW_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{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, "", DEFAULT }, + #define RUNTIME_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{pd}", DEFAULT }, + #define RUNTIME_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{notproduct}", DEFAULT }, +#endif + +#define C1_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C1 product}", DEFAULT }, +#define C1_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{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, "{C1}", DEFAULT }, + #define C1_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{C1 pd}", DEFAULT }, + #define C1_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C1 notproduct}", DEFAULT }, +#endif + + +#define C2_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C2 product}", DEFAULT }, +#define C2_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{C2 pd product}", DEFAULT }, +#define C2_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C2 diagnostic}", 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, "{C2}", DEFAULT }, + #define C2_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{C2 pd}", DEFAULT }, + #define C2_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C2 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_NOTPRODUCT_FLAG_STRUCT, RUNTIME_MANAGEABLE_FLAG_STRUCT, RUNTIME_PRODUCT_RW_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) +#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_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 flags until they are 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 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::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 = 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"); +} + +void CommandLineFlags::printFlags() { + // 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); + } + } + FREE_C_HEAP_ARRAY(Flag*, array); +} + +#endif