--- /dev/null 2018-03-29 13:44:27.000000000 -0500 +++ new/src/hotspot/share/runtime/jvmFlag.cpp 2018-03-29 13:44:26.000000000 -0500 @@ -0,0 +1,1518 @@ +/* + * Copyright (c) 2018 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 "runtime/jvmFlag.hpp" +#include "runtime/jvmFlagConstraintList.hpp" +#include "runtime/jvmFlagWriteableList.hpp" +#include "runtime/jvmFlagRangeList.hpp" +#include "trace/tracing.hpp" +#include "utilities/defaultStream.hpp" +#include "utilities/stringUtils.hpp" + +#define DEFAULT_RANGE_STR_CHUNK_SIZE 64 +static char* create_range_str(const char *fmt, ...) { + static size_t string_length = DEFAULT_RANGE_STR_CHUNK_SIZE; + static char* range_string = NEW_C_HEAP_ARRAY(char, string_length, mtLogging); + + int size_needed = 0; + do { + va_list args; + va_start(args, fmt); + size_needed = jio_vsnprintf(range_string, string_length, fmt, args); + va_end(args); + + if (size_needed < 0) { + string_length += DEFAULT_RANGE_STR_CHUNK_SIZE; + range_string = REALLOC_C_HEAP_ARRAY(char, range_string, string_length, mtLogging); + guarantee(range_string != NULL, "create_range_str string should not be NULL"); + } + } while (size_needed < 0); + + return range_string; +} + +const char* JVMFlag::get_int_default_range_str() { + return create_range_str("[ " INT32_FORMAT_W(-25) " ... " INT32_FORMAT_W(25) " ]", INT_MIN, INT_MAX); +} + +const char* JVMFlag::get_uint_default_range_str() { + return create_range_str("[ " UINT32_FORMAT_W(-25) " ... " UINT32_FORMAT_W(25) " ]", 0, UINT_MAX); +} + +const char* JVMFlag::get_intx_default_range_str() { + return create_range_str("[ " INTX_FORMAT_W(-25) " ... " INTX_FORMAT_W(25) " ]", min_intx, max_intx); +} + +const char* JVMFlag::get_uintx_default_range_str() { + return create_range_str("[ " UINTX_FORMAT_W(-25) " ... " UINTX_FORMAT_W(25) " ]", 0, max_uintx); +} + +const char* JVMFlag::get_uint64_t_default_range_str() { + return create_range_str("[ " UINT64_FORMAT_W(-25) " ... " UINT64_FORMAT_W(25) " ]", 0, uint64_t(max_juint)); +} + +const char* JVMFlag::get_size_t_default_range_str() { + return create_range_str("[ " SIZE_FORMAT_W(-25) " ... " SIZE_FORMAT_W(25) " ]", 0, SIZE_MAX); +} + +const char* JVMFlag::get_double_default_range_str() { + return create_range_str("[ %-25.3f ... %25.3f ]", DBL_MIN, DBL_MAX); +} + +static bool is_product_build() { +#ifdef PRODUCT + return true; +#else + return false; +#endif +} + +JVMFlag::Error JVMFlag::check_writable(bool changed) { + if (is_constant_in_binary()) { + fatal("flag is constant: %s", _name); + } + + JVMFlag::Error error = JVMFlag::SUCCESS; + if (changed) { + JVMFlagWriteable* writeable = JVMFlagWriteableList::find(_name); + if (writeable) { + if (writeable->is_writeable() == false) { + switch (writeable->type()) + { + case JVMFlagWriteable::Once: + error = JVMFlag::SET_ONLY_ONCE; + jio_fprintf(defaultStream::error_stream(), "Error: %s may not be set more than once\n", _name); + break; + case JVMFlagWriteable::CommandLineOnly: + error = JVMFlag::COMMAND_LINE_ONLY; + jio_fprintf(defaultStream::error_stream(), "Error: %s may be modified only from commad line\n", _name); + break; + default: + ShouldNotReachHere(); + break; + } + } + writeable->mark_once(); + } + } + return error; +} + +bool JVMFlag::is_bool() const { + return strcmp(_type, "bool") == 0; +} + +bool JVMFlag::get_bool() const { + return *((bool*) _addr); +} + +JVMFlag::Error JVMFlag::set_bool(bool value) { + JVMFlag::Error error = check_writable(value!=get_bool()); + if (error == JVMFlag::SUCCESS) { + *((bool*) _addr) = value; + } + return error; +} + +bool JVMFlag::is_int() const { + return strcmp(_type, "int") == 0; +} + +int JVMFlag::get_int() const { + return *((int*) _addr); +} + +JVMFlag::Error JVMFlag::set_int(int value) { + JVMFlag::Error error = check_writable(value!=get_int()); + if (error == JVMFlag::SUCCESS) { + *((int*) _addr) = value; + } + return error; +} + +bool JVMFlag::is_uint() const { + return strcmp(_type, "uint") == 0; +} + +uint JVMFlag::get_uint() const { + return *((uint*) _addr); +} + +JVMFlag::Error JVMFlag::set_uint(uint value) { + JVMFlag::Error error = check_writable(value!=get_uint()); + if (error == JVMFlag::SUCCESS) { + *((uint*) _addr) = value; + } + return error; +} + +bool JVMFlag::is_intx() const { + return strcmp(_type, "intx") == 0; +} + +intx JVMFlag::get_intx() const { + return *((intx*) _addr); +} + +JVMFlag::Error JVMFlag::set_intx(intx value) { + JVMFlag::Error error = check_writable(value!=get_intx()); + if (error == JVMFlag::SUCCESS) { + *((intx*) _addr) = value; + } + return error; +} + +bool JVMFlag::is_uintx() const { + return strcmp(_type, "uintx") == 0; +} + +uintx JVMFlag::get_uintx() const { + return *((uintx*) _addr); +} + +JVMFlag::Error JVMFlag::set_uintx(uintx value) { + JVMFlag::Error error = check_writable(value!=get_uintx()); + if (error == JVMFlag::SUCCESS) { + *((uintx*) _addr) = value; + } + return error; +} + +bool JVMFlag::is_uint64_t() const { + return strcmp(_type, "uint64_t") == 0; +} + +uint64_t JVMFlag::get_uint64_t() const { + return *((uint64_t*) _addr); +} + +JVMFlag::Error JVMFlag::set_uint64_t(uint64_t value) { + JVMFlag::Error error = check_writable(value!=get_uint64_t()); + if (error == JVMFlag::SUCCESS) { + *((uint64_t*) _addr) = value; + } + return error; +} + +bool JVMFlag::is_size_t() const { + return strcmp(_type, "size_t") == 0; +} + +size_t JVMFlag::get_size_t() const { + return *((size_t*) _addr); +} + +JVMFlag::Error JVMFlag::set_size_t(size_t value) { + JVMFlag::Error error = check_writable(value!=get_size_t()); + if (error == JVMFlag::SUCCESS) { + *((size_t*) _addr) = value; + } + return error; +} + +bool JVMFlag::is_double() const { + return strcmp(_type, "double") == 0; +} + +double JVMFlag::get_double() const { + return *((double*) _addr); +} + +JVMFlag::Error JVMFlag::set_double(double value) { + JVMFlag::Error error = check_writable(value!=get_double()); + if (error == JVMFlag::SUCCESS) { + *((double*) _addr) = value; + } + return error; +} + +bool JVMFlag::is_ccstr() const { + return strcmp(_type, "ccstr") == 0 || strcmp(_type, "ccstrlist") == 0; +} + +bool JVMFlag::ccstr_accumulates() const { + return strcmp(_type, "ccstrlist") == 0; +} + +ccstr JVMFlag::get_ccstr() const { + return *((ccstr*) _addr); +} + +JVMFlag::Error JVMFlag::set_ccstr(ccstr value) { + JVMFlag::Error error = check_writable(value!=get_ccstr()); + if (error == JVMFlag::SUCCESS) { + *((ccstr*) _addr) = value; + } + return error; +} + + +JVMFlag::Flags JVMFlag::get_origin() { + return Flags(_flags & VALUE_ORIGIN_MASK); +} + +void JVMFlag::set_origin(Flags origin) { + assert((origin & VALUE_ORIGIN_MASK) == origin, "sanity"); + Flags new_origin = Flags((origin == COMMAND_LINE) ? Flags(origin | ORIG_COMMAND_LINE) : origin); + _flags = Flags((_flags & ~VALUE_ORIGIN_MASK) | new_origin); +} + +bool JVMFlag::is_default() { + return (get_origin() == DEFAULT); +} + +bool JVMFlag::is_ergonomic() { + return (get_origin() == ERGONOMIC); +} + +bool JVMFlag::is_command_line() { + return (_flags & ORIG_COMMAND_LINE) != 0; +} + +void JVMFlag::set_command_line() { + _flags = Flags(_flags | ORIG_COMMAND_LINE); +} + +bool JVMFlag::is_product() const { + return (_flags & KIND_PRODUCT) != 0; +} + +bool JVMFlag::is_manageable() const { + return (_flags & KIND_MANAGEABLE) != 0; +} + +bool JVMFlag::is_diagnostic() const { + return (_flags & KIND_DIAGNOSTIC) != 0; +} + +bool JVMFlag::is_experimental() const { + return (_flags & KIND_EXPERIMENTAL) != 0; +} + +bool JVMFlag::is_notproduct() const { + return (_flags & KIND_NOT_PRODUCT) != 0; +} + +bool JVMFlag::is_develop() const { + return (_flags & KIND_DEVELOP) != 0; +} + +bool JVMFlag::is_read_write() const { + return (_flags & KIND_READ_WRITE) != 0; +} + +bool JVMFlag::is_commercial() const { + return (_flags & KIND_COMMERCIAL) != 0; +} + +/** + * Returns if this flag is a constant in the binary. Right now this is + * true for notproduct and develop flags in product builds. + */ +bool JVMFlag::is_constant_in_binary() const { +#ifdef PRODUCT + return is_notproduct() || is_develop(); +#else + return false; +#endif +} + +bool JVMFlag::is_unlocker() const { + return strcmp(_name, "UnlockDiagnosticVMOptions") == 0 || + strcmp(_name, "UnlockExperimentalVMOptions") == 0 || + is_unlocker_ext(); +} + +bool JVMFlag::is_unlocked() const { + if (is_diagnostic()) { + return UnlockDiagnosticVMOptions; + } + if (is_experimental()) { + return UnlockExperimentalVMOptions; + } + return is_unlocked_ext(); +} + +void JVMFlag::clear_diagnostic() { + assert(is_diagnostic(), "sanity"); + _flags = Flags(_flags & ~KIND_DIAGNOSTIC); + assert(!is_diagnostic(), "sanity"); +} + +// Get custom message for this locked flag, or NULL if +// none is available. Returns message type produced. +JVMFlag::MsgType JVMFlag::get_locked_message(char* buf, int buflen) const { + buf[0] = '\0'; + if (is_diagnostic() && !is_unlocked()) { + jio_snprintf(buf, buflen, + "Error: VM option '%s' is diagnostic and must be enabled via -XX:+UnlockDiagnosticVMOptions.\n" + "Error: The unlock option must precede '%s'.\n", + _name, _name); + return JVMFlag::DIAGNOSTIC_FLAG_BUT_LOCKED; + } + if (is_experimental() && !is_unlocked()) { + jio_snprintf(buf, buflen, + "Error: VM option '%s' is experimental and must be enabled via -XX:+UnlockExperimentalVMOptions.\n" + "Error: The unlock option must precede '%s'.\n", + _name, _name); + return JVMFlag::EXPERIMENTAL_FLAG_BUT_LOCKED; + } + if (is_develop() && is_product_build()) { + jio_snprintf(buf, buflen, "Error: VM option '%s' is develop and is available only in debug version of VM.\n", + _name); + return JVMFlag::DEVELOPER_FLAG_BUT_PRODUCT_BUILD; + } + if (is_notproduct() && is_product_build()) { + jio_snprintf(buf, buflen, "Error: VM option '%s' is notproduct and is available only in debug version of VM.\n", + _name); + return JVMFlag::NOTPRODUCT_FLAG_BUT_PRODUCT_BUILD; + } + return get_locked_message_ext(buf, buflen); +} + +bool JVMFlag::is_writeable() const { + return is_manageable() || (is_product() && is_read_write()) || is_writeable_ext(); +} + +// All flags except "manageable" are assumed to be internal flags. +// Long term, we need to define a mechanism to specify which flags +// are external/stable and change this function accordingly. +bool JVMFlag::is_external() const { + return is_manageable() || is_external_ext(); +} + +// Helper function for JVMFlag::print_on(). +// Fills current line up to requested position. +// Should the current position already be past the requested position, +// one separator blank is enforced. +void fill_to_pos(outputStream* st, unsigned int req_pos) { + if ((unsigned int)st->position() < req_pos) { + st->fill_to(req_pos); // need to fill with blanks to reach req_pos + } else { + st->print(" "); // enforce blank separation. Previous field too long. + } +} + +void JVMFlag::print_on(outputStream* st, bool withComments, bool printRanges) { + // Don't print notproduct and develop flags in a product build. + if (is_constant_in_binary()) { + return; + } + + if (!printRanges) { + // The command line options -XX:+PrintFlags* cause this function to be called + // for each existing flag to print information pertinent to this flag. The data + // is displayed in columnar form, with the following layout: + // col1 - data type, right-justified + // col2 - name, left-justified + // col3 - ' =' double-char, leading space to align with possible '+=' + // col4 - value left-justified + // col5 - kind right-justified + // col6 - origin left-justified + // col7 - comments left-justified + // + // The column widths are fixed. They are defined such that, for most cases, + // an eye-pleasing tabular output is created. + // + // Sample output: + // bool CMSScavengeBeforeRemark = false {product} {default} + // uintx CMSScheduleRemarkEdenPenetration = 50 {product} {default} + // size_t CMSScheduleRemarkEdenSizeThreshold = 2097152 {product} {default} + // uintx CMSScheduleRemarkSamplingRatio = 5 {product} {default} + // double CMSSmallCoalSurplusPercent = 1.050000 {product} {default} + // ccstr CompileCommandFile = MyFile.cmd {product} {command line} + // ccstrlist CompileOnly = Method1 + // CompileOnly += Method2 {product} {command line} + // | | | | | | | + // | | | | | | +-- col7 + // | | | | | +-- col6 + // | | | | +-- col5 + // | | | +-- col4 + // | | +-- col3 + // | +-- col2 + // +-- col1 + + const unsigned int col_spacing = 1; + const unsigned int col1_pos = 0; + const unsigned int col1_width = 9; + const unsigned int col2_pos = col1_pos + col1_width + col_spacing; + const unsigned int col2_width = 39; + const unsigned int col3_pos = col2_pos + col2_width + col_spacing; + const unsigned int col3_width = 2; + const unsigned int col4_pos = col3_pos + col3_width + col_spacing; + const unsigned int col4_width = 30; + const unsigned int col5_pos = col4_pos + col4_width + col_spacing; + const unsigned int col5_width = 20; + const unsigned int col6_pos = col5_pos + col5_width + col_spacing; + const unsigned int col6_width = 15; + const unsigned int col7_pos = col6_pos + col6_width + col_spacing; + const unsigned int col7_width = 1; + + st->fill_to(col1_pos); + st->print("%*s", col1_width, _type); // right-justified, therefore width is required. + + fill_to_pos(st, col2_pos); + st->print("%s", _name); + + fill_to_pos(st, col3_pos); + st->print(" ="); // use " =" for proper alignment with multiline ccstr output. + + fill_to_pos(st, col4_pos); + if (is_bool()) { + st->print("%s", get_bool() ? "true" : "false"); + } else if (is_int()) { + st->print("%d", get_int()); + } else if (is_uint()) { + st->print("%u", get_uint()); + } else if (is_intx()) { + st->print(INTX_FORMAT, get_intx()); + } else if (is_uintx()) { + st->print(UINTX_FORMAT, get_uintx()); + } else if (is_uint64_t()) { + st->print(UINT64_FORMAT, get_uint64_t()); + } else if (is_size_t()) { + st->print(SIZE_FORMAT, get_size_t()); + } else if (is_double()) { + st->print("%f", get_double()); + } else if (is_ccstr()) { + // Honor characters in ccstr: print multiple lines. + const char* cp = get_ccstr(); + if (cp != NULL) { + const char* eol; + while ((eol = strchr(cp, '\n')) != NULL) { + size_t llen = pointer_delta(eol, cp, sizeof(char)); + st->print("%.*s", (int)llen, cp); + st->cr(); + cp = eol+1; + fill_to_pos(st, col2_pos); + st->print("%s", _name); + fill_to_pos(st, col3_pos); + st->print("+="); + fill_to_pos(st, col4_pos); + } + st->print("%s", cp); + } + } else { + st->print("unhandled type %s", _type); + st->cr(); + return; + } + + fill_to_pos(st, col5_pos); + print_kind(st, col5_width); + + fill_to_pos(st, col6_pos); + print_origin(st, col6_width); + +#ifndef PRODUCT + if (withComments) { + fill_to_pos(st, col7_pos); + st->print("%s", _doc); + } +#endif + st->cr(); + } else if (!is_bool() && !is_ccstr()) { + // The command line options -XX:+PrintFlags* cause this function to be called + // for each existing flag to print information pertinent to this flag. The data + // is displayed in columnar form, with the following layout: + // col1 - data type, right-justified + // col2 - name, left-justified + // col4 - range [ min ... max] + // col5 - kind right-justified + // col6 - origin left-justified + // col7 - comments left-justified + // + // The column widths are fixed. They are defined such that, for most cases, + // an eye-pleasing tabular output is created. + // + // Sample output: + // intx MinPassesBeforeFlush [ 0 ... 9223372036854775807 ] {diagnostic} {default} + // uintx MinRAMFraction [ 1 ... 18446744073709551615 ] {product} {default} + // double MinRAMPercentage [ 0.000 ... 100.000 ] {product} {default} + // uintx MinSurvivorRatio [ 3 ... 18446744073709551615 ] {product} {default} + // size_t MinTLABSize [ 1 ... 9223372036854775807 ] {product} {default} + // intx MonitorBound [ 0 ... 2147483647 ] {product} {default} + // | | | | | | + // | | | | | +-- col7 + // | | | | +-- col6 + // | | | +-- col5 + // | | +-- col4 + // | +-- col2 + // +-- col1 + + const unsigned int col_spacing = 1; + const unsigned int col1_pos = 0; + const unsigned int col1_width = 9; + const unsigned int col2_pos = col1_pos + col1_width + col_spacing; + const unsigned int col2_width = 49; + const unsigned int col3_pos = col2_pos + col2_width + col_spacing; + const unsigned int col3_width = 0; + const unsigned int col4_pos = col3_pos + col3_width + col_spacing; + const unsigned int col4_width = 60; + const unsigned int col5_pos = col4_pos + col4_width + col_spacing; + const unsigned int col5_width = 35; + const unsigned int col6_pos = col5_pos + col5_width + col_spacing; + const unsigned int col6_width = 15; + const unsigned int col7_pos = col6_pos + col6_width + col_spacing; + const unsigned int col7_width = 1; + + st->fill_to(col1_pos); + st->print("%*s", col1_width, _type); // right-justified, therefore width is required. + + fill_to_pos(st, col2_pos); + st->print("%s", _name); + + fill_to_pos(st, col4_pos); + RangeStrFunc func = NULL; + if (is_int()) { + func = JVMFlag::get_int_default_range_str; + } else if (is_uint()) { + func = JVMFlag::get_uint_default_range_str; + } else if (is_intx()) { + func = JVMFlag::get_intx_default_range_str; + } else if (is_uintx()) { + func = JVMFlag::get_uintx_default_range_str; + } else if (is_uint64_t()) { + func = JVMFlag::get_uint64_t_default_range_str; + } else if (is_size_t()) { + func = JVMFlag::get_size_t_default_range_str; + } else if (is_double()) { + func = JVMFlag::get_double_default_range_str; + } else { + st->print("unhandled type %s", _type); + st->cr(); + return; + } + JVMFlagRangeList::print(st, _name, func); + + fill_to_pos(st, col5_pos); + print_kind(st, col5_width); + + fill_to_pos(st, col6_pos); + print_origin(st, col6_width); + +#ifndef PRODUCT + if (withComments) { + fill_to_pos(st, col7_pos); + st->print("%s", _doc); + } +#endif + st->cr(); + } +} + +void JVMFlag::print_kind(outputStream* st, unsigned int width) { + struct Data { + int flag; + const char* name; + }; + + Data data[] = { + { KIND_JVMCI, "JVMCI" }, + { KIND_C1, "C1" }, + { KIND_C2, "C2" }, + { KIND_ARCH, "ARCH" }, + { KIND_PLATFORM_DEPENDENT, "pd" }, + { KIND_PRODUCT, "product" }, + { KIND_MANAGEABLE, "manageable" }, + { KIND_DIAGNOSTIC, "diagnostic" }, + { KIND_EXPERIMENTAL, "experimental" }, + { KIND_COMMERCIAL, "commercial" }, + { KIND_NOT_PRODUCT, "notproduct" }, + { KIND_DEVELOP, "develop" }, + { KIND_LP64_PRODUCT, "lp64_product" }, + { KIND_READ_WRITE, "rw" }, + { -1, "" } + }; + + if ((_flags & KIND_MASK) != 0) { + bool is_first = true; + const size_t buffer_size = 64; + size_t buffer_used = 0; + char kind[buffer_size]; + + jio_snprintf(kind, buffer_size, "{"); + buffer_used++; + for (int i = 0; data[i].flag != -1; i++) { + Data d = data[i]; + if ((_flags & d.flag) != 0) { + if (is_first) { + is_first = false; + } else { + assert(buffer_used + 1 < buffer_size, "Too small buffer"); + jio_snprintf(kind + buffer_used, buffer_size - buffer_used, " "); + buffer_used++; + } + size_t length = strlen(d.name); + assert(buffer_used + length < buffer_size, "Too small buffer"); + jio_snprintf(kind + buffer_used, buffer_size - buffer_used, "%s", d.name); + buffer_used += length; + } + } + assert(buffer_used + 2 <= buffer_size, "Too small buffer"); + jio_snprintf(kind + buffer_used, buffer_size - buffer_used, "}"); + st->print("%*s", width, kind); + } +} + +void JVMFlag::print_origin(outputStream* st, unsigned int width) { + int origin = _flags & VALUE_ORIGIN_MASK; + st->print("{"); + switch(origin) { + case DEFAULT: + st->print("default"); break; + case COMMAND_LINE: + st->print("command line"); break; + case ENVIRON_VAR: + st->print("environment"); break; + case CONFIG_FILE: + st->print("config file"); break; + case MANAGEMENT: + st->print("management"); break; + case ERGONOMIC: + if (_flags & ORIG_COMMAND_LINE) { + st->print("command line, "); + } + st->print("ergonomic"); break; + case ATTACH_ON_DEMAND: + st->print("attach"); break; + case INTERNAL: + st->print("internal"); break; + } + st->print("}"); +} + +void JVMFlag::print_as_flag(outputStream* st) { + if (is_bool()) { + st->print("-XX:%s%s", get_bool() ? "+" : "-", _name); + } else if (is_int()) { + st->print("-XX:%s=%d", _name, get_int()); + } else if (is_uint()) { + st->print("-XX:%s=%u", _name, get_uint()); + } 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_size_t()) { + st->print("-XX:%s=" SIZE_FORMAT, _name, get_size_t()); + } else if (is_double()) { + st->print("-XX:%s=%f", _name, get_double()); + } 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(); + } +} + +const char* JVMFlag::flag_error_str(JVMFlag::Error error) { + switch (error) { + case JVMFlag::MISSING_NAME: return "MISSING_NAME"; + case JVMFlag::MISSING_VALUE: return "MISSING_VALUE"; + case JVMFlag::NON_WRITABLE: return "NON_WRITABLE"; + case JVMFlag::OUT_OF_BOUNDS: return "OUT_OF_BOUNDS"; + case JVMFlag::VIOLATES_CONSTRAINT: return "VIOLATES_CONSTRAINT"; + case JVMFlag::INVALID_FLAG: return "INVALID_FLAG"; + case JVMFlag::ERR_OTHER: return "ERR_OTHER"; + case JVMFlag::SUCCESS: return "SUCCESS"; + default: ShouldNotReachHere(); return "NULL"; + } +} + +// 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) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_PRODUCT) }, +#define RUNTIME_PD_PRODUCT_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_PRODUCT | JVMFlag::KIND_PLATFORM_DEPENDENT) }, +#define RUNTIME_DIAGNOSTIC_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_DIAGNOSTIC) }, +#define RUNTIME_PD_DIAGNOSTIC_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_DIAGNOSTIC | JVMFlag::KIND_PLATFORM_DEPENDENT) }, +#define RUNTIME_EXPERIMENTAL_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_EXPERIMENTAL) }, +#define RUNTIME_MANAGEABLE_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_MANAGEABLE) }, +#define RUNTIME_PRODUCT_RW_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_PRODUCT | JVMFlag::KIND_READ_WRITE) }, +#define RUNTIME_DEVELOP_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_DEVELOP) }, +#define RUNTIME_PD_DEVELOP_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_DEVELOP | JVMFlag::KIND_PLATFORM_DEPENDENT) }, +#define RUNTIME_NOTPRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_NOT_PRODUCT) }, + +#define JVMCI_PRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_JVMCI | JVMFlag::KIND_PRODUCT) }, +#define JVMCI_PD_PRODUCT_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_JVMCI | JVMFlag::KIND_PRODUCT | JVMFlag::KIND_PLATFORM_DEPENDENT) }, +#define JVMCI_DIAGNOSTIC_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_JVMCI | JVMFlag::KIND_DIAGNOSTIC) }, +#define JVMCI_PD_DIAGNOSTIC_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_JVMCI | JVMFlag::KIND_DIAGNOSTIC | JVMFlag::KIND_PLATFORM_DEPENDENT) }, +#define JVMCI_EXPERIMENTAL_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_JVMCI | JVMFlag::KIND_EXPERIMENTAL) }, +#define JVMCI_DEVELOP_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_JVMCI | JVMFlag::KIND_DEVELOP) }, +#define JVMCI_PD_DEVELOP_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_JVMCI | JVMFlag::KIND_DEVELOP | JVMFlag::KIND_PLATFORM_DEPENDENT) }, +#define JVMCI_NOTPRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_JVMCI | JVMFlag::KIND_NOT_PRODUCT) }, + +#ifdef _LP64 +#define RUNTIME_LP64_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_LP64_PRODUCT) }, +#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) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_C1 | JVMFlag::KIND_PRODUCT) }, +#define C1_PD_PRODUCT_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_C1 | JVMFlag::KIND_PRODUCT | JVMFlag::KIND_PLATFORM_DEPENDENT) }, +#define C1_DIAGNOSTIC_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_C1 | JVMFlag::KIND_DIAGNOSTIC) }, +#define C1_PD_DIAGNOSTIC_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_C1 | JVMFlag::KIND_DIAGNOSTIC | JVMFlag::KIND_PLATFORM_DEPENDENT) }, +#define C1_DEVELOP_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_C1 | JVMFlag::KIND_DEVELOP) }, +#define C1_PD_DEVELOP_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_C1 | JVMFlag::KIND_DEVELOP | JVMFlag::KIND_PLATFORM_DEPENDENT) }, +#define C1_NOTPRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_C1 | JVMFlag::KIND_NOT_PRODUCT) }, + +#define C2_PRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_C2 | JVMFlag::KIND_PRODUCT) }, +#define C2_PD_PRODUCT_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_C2 | JVMFlag::KIND_PRODUCT | JVMFlag::KIND_PLATFORM_DEPENDENT) }, +#define C2_DIAGNOSTIC_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_C2 | JVMFlag::KIND_DIAGNOSTIC) }, +#define C2_PD_DIAGNOSTIC_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_C2 | JVMFlag::KIND_DIAGNOSTIC | JVMFlag::KIND_PLATFORM_DEPENDENT) }, +#define C2_EXPERIMENTAL_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_C2 | JVMFlag::KIND_EXPERIMENTAL) }, +#define C2_DEVELOP_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_C2 | JVMFlag::KIND_DEVELOP) }, +#define C2_PD_DEVELOP_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_C2 | JVMFlag::KIND_DEVELOP | JVMFlag::KIND_PLATFORM_DEPENDENT) }, +#define C2_NOTPRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_C2 | JVMFlag::KIND_NOT_PRODUCT) }, + +#define ARCH_PRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_ARCH | JVMFlag::KIND_PRODUCT) }, +#define ARCH_DIAGNOSTIC_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_ARCH | JVMFlag::KIND_DIAGNOSTIC) }, +#define ARCH_EXPERIMENTAL_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_ARCH | JVMFlag::KIND_EXPERIMENTAL) }, +#define ARCH_DEVELOP_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_ARCH | JVMFlag::KIND_DEVELOP) }, +#define ARCH_NOTPRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) JVMFlag::Flags(JVMFlag::DEFAULT | JVMFlag::KIND_ARCH | JVMFlag::KIND_NOT_PRODUCT) }, + +static JVMFlag 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_PD_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, \ + IGNORE_RANGE, \ + IGNORE_CONSTRAINT, \ + IGNORE_WRITEABLE) + 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_PD_DIAGNOSTIC_FLAG_STRUCT, \ + RUNTIME_NOTPRODUCT_FLAG_STRUCT, \ + IGNORE_RANGE, \ + IGNORE_CONSTRAINT, \ + IGNORE_WRITEABLE) +#if INCLUDE_ALL_GCS + 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_PD_DIAGNOSTIC_FLAG_STRUCT, \ + RUNTIME_EXPERIMENTAL_FLAG_STRUCT, \ + RUNTIME_NOTPRODUCT_FLAG_STRUCT, \ + RUNTIME_MANAGEABLE_FLAG_STRUCT, \ + RUNTIME_PRODUCT_RW_FLAG_STRUCT, \ + IGNORE_RANGE, \ + IGNORE_CONSTRAINT, \ + IGNORE_WRITEABLE) +#endif // INCLUDE_ALL_GCS +#if INCLUDE_JVMCI + JVMCI_FLAGS(JVMCI_DEVELOP_FLAG_STRUCT, \ + JVMCI_PD_DEVELOP_FLAG_STRUCT, \ + JVMCI_PRODUCT_FLAG_STRUCT, \ + JVMCI_PD_PRODUCT_FLAG_STRUCT, \ + JVMCI_DIAGNOSTIC_FLAG_STRUCT, \ + JVMCI_PD_DIAGNOSTIC_FLAG_STRUCT, \ + JVMCI_EXPERIMENTAL_FLAG_STRUCT, \ + JVMCI_NOTPRODUCT_FLAG_STRUCT, \ + IGNORE_RANGE, \ + IGNORE_CONSTRAINT, \ + IGNORE_WRITEABLE) +#endif // INCLUDE_JVMCI +#ifdef COMPILER1 + 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_PD_DIAGNOSTIC_FLAG_STRUCT, \ + C1_NOTPRODUCT_FLAG_STRUCT, \ + IGNORE_RANGE, \ + IGNORE_CONSTRAINT, \ + IGNORE_WRITEABLE) +#endif // COMPILER1 +#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_PD_DIAGNOSTIC_FLAG_STRUCT, \ + C2_EXPERIMENTAL_FLAG_STRUCT, \ + C2_NOTPRODUCT_FLAG_STRUCT, \ + IGNORE_RANGE, \ + IGNORE_CONSTRAINT, \ + IGNORE_WRITEABLE) +#endif // COMPILER2 + ARCH_FLAGS(ARCH_DEVELOP_FLAG_STRUCT, \ + ARCH_PRODUCT_FLAG_STRUCT, \ + ARCH_DIAGNOSTIC_FLAG_STRUCT, \ + ARCH_EXPERIMENTAL_FLAG_STRUCT, \ + ARCH_NOTPRODUCT_FLAG_STRUCT, \ + IGNORE_RANGE, \ + IGNORE_CONSTRAINT, \ + IGNORE_WRITEABLE) + FLAGTABLE_EXT + {0, NULL, NULL} +}; + +JVMFlag* JVMFlag::flags = flagTable; +size_t JVMFlag::numFlags = (sizeof(flagTable) / sizeof(JVMFlag)); + +inline bool str_equal(const char* s, size_t s_len, const char* q, size_t q_len) { + if (s_len != q_len) return false; + return memcmp(s, q, q_len) == 0; +} + +// Search the flag table for a named flag +JVMFlag* JVMFlag::find_flag(const char* name, size_t length, bool allow_locked, bool return_flag) { + for (JVMFlag* current = &flagTable[0]; current->_name != NULL; current++) { + if (str_equal(current->_name, current->get_name_length(), name, length)) { + // Found a matching entry. + // Don't report notproduct and develop flags in product builds. + if (current->is_constant_in_binary()) { + return (return_flag ? current : NULL); + } + // Report locked flags only if allowed. + if (!(current->is_unlocked() || current->is_unlocker())) { + if (!allow_locked) { + // disable use of locked flags, e.g. diagnostic, experimental, + // commercial... until they are explicitly unlocked + return NULL; + } + } + return current; + } + } + // JVMFlag name is not in the flag table + return NULL; +} + +// Get or compute the flag name length +size_t JVMFlag::get_name_length() { + if (_name_len == 0) { + _name_len = strlen(_name); + } + return _name_len; +} + +JVMFlag* JVMFlag::fuzzy_match(const char* name, size_t length, bool allow_locked) { + float VMOptionsFuzzyMatchSimilarity = 0.7f; + JVMFlag* match = NULL; + float score; + float max_score = -1; + + for (JVMFlag* current = &flagTable[0]; current->_name != NULL; current++) { + score = StringUtils::similarity(current->_name, strlen(current->_name), name, length); + if (score > max_score) { + max_score = score; + match = current; + } + } + + if (!(match->is_unlocked() || match->is_unlocker())) { + if (!allow_locked) { + return NULL; + } + } + + if (max_score < VMOptionsFuzzyMatchSimilarity) { + return NULL; + } + + return match; +} + +// Returns the address of the index'th element +static JVMFlag* address_of_flag(JVMFlagsWithType flag) { + assert((size_t)flag < JVMFlag::numFlags, "bad command line flag index"); + return &JVMFlag::flags[flag]; +} + +bool JVMFlagEx::is_default(JVMFlags flag) { + assert((size_t)flag < JVMFlag::numFlags, "bad command line flag index"); + JVMFlag* f = &JVMFlag::flags[flag]; + return f->is_default(); +} + +bool JVMFlagEx::is_ergo(JVMFlags flag) { + assert((size_t)flag < JVMFlag::numFlags, "bad command line flag index"); + JVMFlag* f = &JVMFlag::flags[flag]; + return f->is_ergonomic(); +} + +bool JVMFlagEx::is_cmdline(JVMFlags flag) { + assert((size_t)flag < JVMFlag::numFlags, "bad command line flag index"); + JVMFlag* f = &JVMFlag::flags[flag]; + return f->is_command_line(); +} + +bool JVMFlag::wasSetOnCmdline(const char* name, bool* value) { + JVMFlag* result = JVMFlag::find_flag((char*)name, strlen(name)); + if (result == NULL) return false; + *value = result->is_command_line(); + return true; +} + +void JVMFlagEx::setOnCmdLine(JVMFlagsWithType flag) { + JVMFlag* faddr = address_of_flag(flag); + assert(faddr != NULL, "Unknown flag"); + faddr->set_command_line(); +} + +template +static void trace_flag_changed(const char* name, const T old_value, const T new_value, const JVMFlag::Flags origin) { + E e; + e.set_name(name); + e.set_oldValue(old_value); + e.set_newValue(new_value); + e.set_origin(origin); + e.commit(); +} + +static JVMFlag::Error apply_constraint_and_check_range_bool(const char* name, bool new_value, bool verbose) { + JVMFlag::Error status = JVMFlag::SUCCESS; + JVMFlagConstraint* constraint = JVMFlagConstraintList::find_if_needs_check(name); + if (constraint != NULL) { + status = constraint->apply_bool(new_value, verbose); + } + return status; +} + +JVMFlag::Error JVMFlag::boolAt(const char* name, size_t len, bool* value, bool allow_locked, bool return_flag) { + JVMFlag* result = JVMFlag::find_flag(name, len, allow_locked, return_flag); + if (result == NULL) return JVMFlag::INVALID_FLAG; + if (!result->is_bool()) return JVMFlag::WRONG_FORMAT; + *value = result->get_bool(); + return JVMFlag::SUCCESS; +} + +JVMFlag::Error JVMFlag::boolAtPut(JVMFlag* flag, bool* value, JVMFlag::Flags origin) { + const char* name; + if (flag == NULL) return JVMFlag::INVALID_FLAG; + if (!flag->is_bool()) return JVMFlag::WRONG_FORMAT; + name = flag->_name; + JVMFlag::Error check = apply_constraint_and_check_range_bool(name, *value, !JVMFlagConstraintList::validated_after_ergo()); + if (check != JVMFlag::SUCCESS) return check; + bool old_value = flag->get_bool(); + trace_flag_changed(name, old_value, *value, origin); + check = flag->set_bool(*value); + *value = old_value; + flag->set_origin(origin); + return check; +} + +JVMFlag::Error JVMFlag::boolAtPut(const char* name, size_t len, bool* value, JVMFlag::Flags origin) { + JVMFlag* result = JVMFlag::find_flag(name, len); + return boolAtPut(result, value, origin); +} + +JVMFlag::Error JVMFlagEx::boolAtPut(JVMFlagsWithType flag, bool value, JVMFlag::Flags origin) { + JVMFlag* faddr = address_of_flag(flag); + guarantee(faddr != NULL && faddr->is_bool(), "wrong flag type"); + return JVMFlag::boolAtPut(faddr, &value, origin); +} + +static JVMFlag::Error apply_constraint_and_check_range_int(const char* name, int new_value, bool verbose) { + JVMFlag::Error status = JVMFlag::SUCCESS; + JVMFlagRange* range = JVMFlagRangeList::find(name); + if (range != NULL) { + status = range->check_int(new_value, verbose); + } + if (status == JVMFlag::SUCCESS) { + JVMFlagConstraint* constraint = JVMFlagConstraintList::find_if_needs_check(name); + if (constraint != NULL) { + status = constraint->apply_int(new_value, verbose); + } + } + return status; +} + +JVMFlag::Error JVMFlag::intAt(const char* name, size_t len, int* value, bool allow_locked, bool return_flag) { + JVMFlag* result = JVMFlag::find_flag(name, len, allow_locked, return_flag); + if (result == NULL) return JVMFlag::INVALID_FLAG; + if (!result->is_int()) return JVMFlag::WRONG_FORMAT; + *value = result->get_int(); + return JVMFlag::SUCCESS; +} + +JVMFlag::Error JVMFlag::intAtPut(JVMFlag* flag, int* value, JVMFlag::Flags origin) { + const char* name; + if (flag == NULL) return JVMFlag::INVALID_FLAG; + if (!flag->is_int()) return JVMFlag::WRONG_FORMAT; + name = flag->_name; + JVMFlag::Error check = apply_constraint_and_check_range_int(name, *value, !JVMFlagConstraintList::validated_after_ergo()); + if (check != JVMFlag::SUCCESS) return check; + int old_value = flag->get_int(); + trace_flag_changed(name, old_value, *value, origin); + check = flag->set_int(*value); + *value = old_value; + flag->set_origin(origin); + return check; +} + +JVMFlag::Error JVMFlag::intAtPut(const char* name, size_t len, int* value, JVMFlag::Flags origin) { + JVMFlag* result = JVMFlag::find_flag(name, len); + return intAtPut(result, value, origin); +} + +JVMFlag::Error JVMFlagEx::intAtPut(JVMFlagsWithType flag, int value, JVMFlag::Flags origin) { + JVMFlag* faddr = address_of_flag(flag); + guarantee(faddr != NULL && faddr->is_int(), "wrong flag type"); + return JVMFlag::intAtPut(faddr, &value, origin); +} + +static JVMFlag::Error apply_constraint_and_check_range_uint(const char* name, uint new_value, bool verbose) { + JVMFlag::Error status = JVMFlag::SUCCESS; + JVMFlagRange* range = JVMFlagRangeList::find(name); + if (range != NULL) { + status = range->check_uint(new_value, verbose); + } + if (status == JVMFlag::SUCCESS) { + JVMFlagConstraint* constraint = JVMFlagConstraintList::find_if_needs_check(name); + if (constraint != NULL) { + status = constraint->apply_uint(new_value, verbose); + } + } + return status; +} + +JVMFlag::Error JVMFlag::uintAt(const char* name, size_t len, uint* value, bool allow_locked, bool return_flag) { + JVMFlag* result = JVMFlag::find_flag(name, len, allow_locked, return_flag); + if (result == NULL) return JVMFlag::INVALID_FLAG; + if (!result->is_uint()) return JVMFlag::WRONG_FORMAT; + *value = result->get_uint(); + return JVMFlag::SUCCESS; +} + +JVMFlag::Error JVMFlag::uintAtPut(JVMFlag* flag, uint* value, JVMFlag::Flags origin) { + const char* name; + if (flag == NULL) return JVMFlag::INVALID_FLAG; + if (!flag->is_uint()) return JVMFlag::WRONG_FORMAT; + name = flag->_name; + JVMFlag::Error check = apply_constraint_and_check_range_uint(name, *value, !JVMFlagConstraintList::validated_after_ergo()); + if (check != JVMFlag::SUCCESS) return check; + uint old_value = flag->get_uint(); + trace_flag_changed(name, old_value, *value, origin); + check = flag->set_uint(*value); + *value = old_value; + flag->set_origin(origin); + return check; +} + +JVMFlag::Error JVMFlag::uintAtPut(const char* name, size_t len, uint* value, JVMFlag::Flags origin) { + JVMFlag* result = JVMFlag::find_flag(name, len); + return uintAtPut(result, value, origin); +} + +JVMFlag::Error JVMFlagEx::uintAtPut(JVMFlagsWithType flag, uint value, JVMFlag::Flags origin) { + JVMFlag* faddr = address_of_flag(flag); + guarantee(faddr != NULL && faddr->is_uint(), "wrong flag type"); + return JVMFlag::uintAtPut(faddr, &value, origin); +} + +JVMFlag::Error JVMFlag::intxAt(const char* name, size_t len, intx* value, bool allow_locked, bool return_flag) { + JVMFlag* result = JVMFlag::find_flag(name, len, allow_locked, return_flag); + if (result == NULL) return JVMFlag::INVALID_FLAG; + if (!result->is_intx()) return JVMFlag::WRONG_FORMAT; + *value = result->get_intx(); + return JVMFlag::SUCCESS; +} + +static JVMFlag::Error apply_constraint_and_check_range_intx(const char* name, intx new_value, bool verbose) { + JVMFlag::Error status = JVMFlag::SUCCESS; + JVMFlagRange* range = JVMFlagRangeList::find(name); + if (range != NULL) { + status = range->check_intx(new_value, verbose); + } + if (status == JVMFlag::SUCCESS) { + JVMFlagConstraint* constraint = JVMFlagConstraintList::find_if_needs_check(name); + if (constraint != NULL) { + status = constraint->apply_intx(new_value, verbose); + } + } + return status; +} + +JVMFlag::Error JVMFlag::intxAtPut(JVMFlag* flag, intx* value, JVMFlag::Flags origin) { + const char* name; + if (flag == NULL) return JVMFlag::INVALID_FLAG; + if (!flag->is_intx()) return JVMFlag::WRONG_FORMAT; + name = flag->_name; + JVMFlag::Error check = apply_constraint_and_check_range_intx(name, *value, !JVMFlagConstraintList::validated_after_ergo()); + if (check != JVMFlag::SUCCESS) return check; + intx old_value = flag->get_intx(); + trace_flag_changed(name, old_value, *value, origin); + check = flag->set_intx(*value); + *value = old_value; + flag->set_origin(origin); + return check; +} + +JVMFlag::Error JVMFlag::intxAtPut(const char* name, size_t len, intx* value, JVMFlag::Flags origin) { + JVMFlag* result = JVMFlag::find_flag(name, len); + return intxAtPut(result, value, origin); +} + +JVMFlag::Error JVMFlagEx::intxAtPut(JVMFlagsWithType flag, intx value, JVMFlag::Flags origin) { + JVMFlag* faddr = address_of_flag(flag); + guarantee(faddr != NULL && faddr->is_intx(), "wrong flag type"); + return JVMFlag::intxAtPut(faddr, &value, origin); +} + +JVMFlag::Error JVMFlag::uintxAt(const char* name, size_t len, uintx* value, bool allow_locked, bool return_flag) { + JVMFlag* result = JVMFlag::find_flag(name, len, allow_locked, return_flag); + if (result == NULL) return JVMFlag::INVALID_FLAG; + if (!result->is_uintx()) return JVMFlag::WRONG_FORMAT; + *value = result->get_uintx(); + return JVMFlag::SUCCESS; +} + +static JVMFlag::Error apply_constraint_and_check_range_uintx(const char* name, uintx new_value, bool verbose) { + JVMFlag::Error status = JVMFlag::SUCCESS; + JVMFlagRange* range = JVMFlagRangeList::find(name); + if (range != NULL) { + status = range->check_uintx(new_value, verbose); + } + if (status == JVMFlag::SUCCESS) { + JVMFlagConstraint* constraint = JVMFlagConstraintList::find_if_needs_check(name); + if (constraint != NULL) { + status = constraint->apply_uintx(new_value, verbose); + } + } + return status; +} + +JVMFlag::Error JVMFlag::uintxAtPut(JVMFlag* flag, uintx* value, JVMFlag::Flags origin) { + const char* name; + if (flag == NULL) return JVMFlag::INVALID_FLAG; + if (!flag->is_uintx()) return JVMFlag::WRONG_FORMAT; + name = flag->_name; + JVMFlag::Error check = apply_constraint_and_check_range_uintx(name, *value, !JVMFlagConstraintList::validated_after_ergo()); + if (check != JVMFlag::SUCCESS) return check; + uintx old_value = flag->get_uintx(); + trace_flag_changed(name, old_value, *value, origin); + check = flag->set_uintx(*value); + *value = old_value; + flag->set_origin(origin); + return check; +} + +JVMFlag::Error JVMFlag::uintxAtPut(const char* name, size_t len, uintx* value, JVMFlag::Flags origin) { + JVMFlag* result = JVMFlag::find_flag(name, len); + return uintxAtPut(result, value, origin); +} + +JVMFlag::Error JVMFlagEx::uintxAtPut(JVMFlagsWithType flag, uintx value, JVMFlag::Flags origin) { + JVMFlag* faddr = address_of_flag(flag); + guarantee(faddr != NULL && faddr->is_uintx(), "wrong flag type"); + return JVMFlag::uintxAtPut(faddr, &value, origin); +} + +JVMFlag::Error JVMFlag::uint64_tAt(const char* name, size_t len, uint64_t* value, bool allow_locked, bool return_flag) { + JVMFlag* result = JVMFlag::find_flag(name, len, allow_locked, return_flag); + if (result == NULL) return JVMFlag::INVALID_FLAG; + if (!result->is_uint64_t()) return JVMFlag::WRONG_FORMAT; + *value = result->get_uint64_t(); + return JVMFlag::SUCCESS; +} + +static JVMFlag::Error apply_constraint_and_check_range_uint64_t(const char* name, uint64_t new_value, bool verbose) { + JVMFlag::Error status = JVMFlag::SUCCESS; + JVMFlagRange* range = JVMFlagRangeList::find(name); + if (range != NULL) { + status = range->check_uint64_t(new_value, verbose); + } + if (status == JVMFlag::SUCCESS) { + JVMFlagConstraint* constraint = JVMFlagConstraintList::find_if_needs_check(name); + if (constraint != NULL) { + status = constraint->apply_uint64_t(new_value, verbose); + } + } + return status; +} + +JVMFlag::Error JVMFlag::uint64_tAtPut(JVMFlag* flag, uint64_t* value, JVMFlag::Flags origin) { + const char* name; + if (flag == NULL) return JVMFlag::INVALID_FLAG; + if (!flag->is_uint64_t()) return JVMFlag::WRONG_FORMAT; + name = flag->_name; + JVMFlag::Error check = apply_constraint_and_check_range_uint64_t(name, *value, !JVMFlagConstraintList::validated_after_ergo()); + if (check != JVMFlag::SUCCESS) return check; + uint64_t old_value = flag->get_uint64_t(); + trace_flag_changed(name, old_value, *value, origin); + check = flag->set_uint64_t(*value); + *value = old_value; + flag->set_origin(origin); + return check; +} + +JVMFlag::Error JVMFlag::uint64_tAtPut(const char* name, size_t len, uint64_t* value, JVMFlag::Flags origin) { + JVMFlag* result = JVMFlag::find_flag(name, len); + return uint64_tAtPut(result, value, origin); +} + +JVMFlag::Error JVMFlagEx::uint64_tAtPut(JVMFlagsWithType flag, uint64_t value, JVMFlag::Flags origin) { + JVMFlag* faddr = address_of_flag(flag); + guarantee(faddr != NULL && faddr->is_uint64_t(), "wrong flag type"); + return JVMFlag::uint64_tAtPut(faddr, &value, origin); +} + +JVMFlag::Error JVMFlag::size_tAt(const char* name, size_t len, size_t* value, bool allow_locked, bool return_flag) { + JVMFlag* result = JVMFlag::find_flag(name, len, allow_locked, return_flag); + if (result == NULL) return JVMFlag::INVALID_FLAG; + if (!result->is_size_t()) return JVMFlag::WRONG_FORMAT; + *value = result->get_size_t(); + return JVMFlag::SUCCESS; +} + +static JVMFlag::Error apply_constraint_and_check_range_size_t(const char* name, size_t new_value, bool verbose) { + JVMFlag::Error status = JVMFlag::SUCCESS; + JVMFlagRange* range = JVMFlagRangeList::find(name); + if (range != NULL) { + status = range->check_size_t(new_value, verbose); + } + if (status == JVMFlag::SUCCESS) { + JVMFlagConstraint* constraint = JVMFlagConstraintList::find_if_needs_check(name); + if (constraint != NULL) { + status = constraint->apply_size_t(new_value, verbose); + } + } + return status; +} + + +JVMFlag::Error JVMFlag::size_tAtPut(JVMFlag* flag, size_t* value, JVMFlag::Flags origin) { + const char* name; + if (flag == NULL) return JVMFlag::INVALID_FLAG; + if (!flag->is_size_t()) return JVMFlag::WRONG_FORMAT; + name = flag->_name; + JVMFlag::Error check = apply_constraint_and_check_range_size_t(name, *value, !JVMFlagConstraintList::validated_after_ergo()); + if (check != JVMFlag::SUCCESS) return check; + size_t old_value = flag->get_size_t(); + trace_flag_changed(name, old_value, *value, origin); + check = flag->set_size_t(*value); + *value = old_value; + flag->set_origin(origin); + return check; +} + +JVMFlag::Error JVMFlag::size_tAtPut(const char* name, size_t len, size_t* value, JVMFlag::Flags origin) { + JVMFlag* result = JVMFlag::find_flag(name, len); + return size_tAtPut(result, value, origin); +} + +JVMFlag::Error JVMFlagEx::size_tAtPut(JVMFlagsWithType flag, size_t value, JVMFlag::Flags origin) { + JVMFlag* faddr = address_of_flag(flag); + guarantee(faddr != NULL && faddr->is_size_t(), "wrong flag type"); + return JVMFlag::size_tAtPut(faddr, &value, origin); +} + +JVMFlag::Error JVMFlag::doubleAt(const char* name, size_t len, double* value, bool allow_locked, bool return_flag) { + JVMFlag* result = JVMFlag::find_flag(name, len, allow_locked, return_flag); + if (result == NULL) return JVMFlag::INVALID_FLAG; + if (!result->is_double()) return JVMFlag::WRONG_FORMAT; + *value = result->get_double(); + return JVMFlag::SUCCESS; +} + +static JVMFlag::Error apply_constraint_and_check_range_double(const char* name, double new_value, bool verbose) { + JVMFlag::Error status = JVMFlag::SUCCESS; + JVMFlagRange* range = JVMFlagRangeList::find(name); + if (range != NULL) { + status = range->check_double(new_value, verbose); + } + if (status == JVMFlag::SUCCESS) { + JVMFlagConstraint* constraint = JVMFlagConstraintList::find_if_needs_check(name); + if (constraint != NULL) { + status = constraint->apply_double(new_value, verbose); + } + } + return status; +} + +JVMFlag::Error JVMFlag::doubleAtPut(JVMFlag* flag, double* value, JVMFlag::Flags origin) { + const char* name; + if (flag == NULL) return JVMFlag::INVALID_FLAG; + if (!flag->is_double()) return JVMFlag::WRONG_FORMAT; + name = flag->_name; + JVMFlag::Error check = apply_constraint_and_check_range_double(name, *value, !JVMFlagConstraintList::validated_after_ergo()); + if (check != JVMFlag::SUCCESS) return check; + double old_value = flag->get_double(); + trace_flag_changed(name, old_value, *value, origin); + check = flag->set_double(*value); + *value = old_value; + flag->set_origin(origin); + return check; +} + +JVMFlag::Error JVMFlag::doubleAtPut(const char* name, size_t len, double* value, JVMFlag::Flags origin) { + JVMFlag* result = JVMFlag::find_flag(name, len); + return doubleAtPut(result, value, origin); +} + +JVMFlag::Error JVMFlagEx::doubleAtPut(JVMFlagsWithType flag, double value, JVMFlag::Flags origin) { + JVMFlag* faddr = address_of_flag(flag); + guarantee(faddr != NULL && faddr->is_double(), "wrong flag type"); + return JVMFlag::doubleAtPut(faddr, &value, origin); +} + +JVMFlag::Error JVMFlag::ccstrAt(const char* name, size_t len, ccstr* value, bool allow_locked, bool return_flag) { + JVMFlag* result = JVMFlag::find_flag(name, len, allow_locked, return_flag); + if (result == NULL) return JVMFlag::INVALID_FLAG; + if (!result->is_ccstr()) return JVMFlag::WRONG_FORMAT; + *value = result->get_ccstr(); + return JVMFlag::SUCCESS; +} + +JVMFlag::Error JVMFlag::ccstrAtPut(const char* name, size_t len, ccstr* value, JVMFlag::Flags origin) { + JVMFlag* result = JVMFlag::find_flag(name, len); + if (result == NULL) return JVMFlag::INVALID_FLAG; + if (!result->is_ccstr()) return JVMFlag::WRONG_FORMAT; + ccstr old_value = result->get_ccstr(); + trace_flag_changed(name, old_value, *value, origin); + char* new_value = NULL; + if (*value != NULL) { + new_value = os::strdup_check_oom(*value); + } + JVMFlag::Error check = result->set_ccstr(new_value); + if (result->is_default() && old_value != NULL) { + // Prior value is NOT heap allocated, but was a literal constant. + old_value = os::strdup_check_oom(old_value); + } + *value = old_value; + result->set_origin(origin); + return check; +} + +JVMFlag::Error JVMFlagEx::ccstrAtPut(JVMFlagsWithType flag, ccstr value, JVMFlag::Flags origin) { + JVMFlag* faddr = address_of_flag(flag); + guarantee(faddr != NULL && faddr->is_ccstr(), "wrong flag type"); + ccstr old_value = faddr->get_ccstr(); + trace_flag_changed(faddr->_name, old_value, value, origin); + char* new_value = os::strdup_check_oom(value); + JVMFlag::Error check = faddr->set_ccstr(new_value); + if (!faddr->is_default() && old_value != NULL) { + // Prior value is heap allocated so free it. + FREE_C_HEAP_ARRAY(char, old_value); + } + faddr->set_origin(origin); + return check; +} + +extern "C" { + static int compare_flags(const void* void_a, const void* void_b) { + return strcmp((*((JVMFlag**) void_a))->_name, (*((JVMFlag**) void_b))->_name); + } +} + +void JVMFlag::printSetFlags(outputStream* out) { + // 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. + + // The last entry is the null entry. + const size_t length = JVMFlag::numFlags - 1; + + // Sort + JVMFlag** array = NEW_C_HEAP_ARRAY(JVMFlag*, length, mtArguments); + for (size_t i = 0; i < length; i++) { + array[i] = &flagTable[i]; + } + qsort(array, length, sizeof(JVMFlag*), compare_flags); + + // Print + for (size_t i = 0; i < length; i++) { + if (array[i]->get_origin() /* naked field! */) { + array[i]->print_as_flag(out); + out->print(" "); + } + } + out->cr(); + FREE_C_HEAP_ARRAY(JVMFlag*, array); +} + +#ifndef PRODUCT + +void JVMFlag::verify() { + assert(Arguments::check_vm_args_consistency(), "Some flag settings conflict"); +} + +#endif // PRODUCT + +void JVMFlag::printFlags(outputStream* out, bool withComments, bool printRanges) { + // 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. + + // The last entry is the null entry. + const size_t length = JVMFlag::numFlags - 1; + + // Sort + JVMFlag** array = NEW_C_HEAP_ARRAY(JVMFlag*, length, mtArguments); + for (size_t i = 0; i < length; i++) { + array[i] = &flagTable[i]; + } + qsort(array, length, sizeof(JVMFlag*), compare_flags); + + // Print + if (!printRanges) { + out->print_cr("[Global flags]"); + } else { + out->print_cr("[Global flags ranges]"); + } + + for (size_t i = 0; i < length; i++) { + if (array[i]->is_unlocked()) { + array[i]->print_on(out, withComments, printRanges); + } + } + FREE_C_HEAP_ARRAY(JVMFlag*, array); +} +