228 lines
8.4 KiB
C++
228 lines
8.4 KiB
C++
/*
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* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#include "precompiled.hpp"
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#include "classfile/javaClasses.hpp"
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#include "runtime/arguments.hpp"
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#include "runtime/java.hpp"
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#include "runtime/jniHandles.hpp"
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#include "services/writeableFlags.hpp"
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// set a boolean global flag
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int WriteableFlags::set_bool_flag(const char* name, const char* arg, Flag::Flags origin, FormatBuffer<80>& err_msg) {
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int value = true;
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if (sscanf(arg, "%d", &value)) {
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return set_bool_flag(name, value != 0, origin, err_msg);
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}
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err_msg.print("flag value must be a boolean (1 or 0)");
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return WRONG_FORMAT;
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}
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int WriteableFlags::set_bool_flag(const char* name, bool value, Flag::Flags origin, FormatBuffer<80>& err_msg) {
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return CommandLineFlags::boolAtPut((char*)name, &value, origin) ? SUCCESS : ERR_OTHER;
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}
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// set a intx global flag
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int WriteableFlags::set_intx_flag(const char* name, const char* arg, Flag::Flags origin, FormatBuffer<80>& err_msg) {
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intx value;
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if (sscanf(arg, INTX_FORMAT, &value)) {
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return set_intx_flag(name, value, origin, err_msg);
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}
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err_msg.print("flag value must be an integer");
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return WRONG_FORMAT;
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}
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int WriteableFlags::set_intx_flag(const char* name, intx value, Flag::Flags origin, FormatBuffer<80>& err_msg) {
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return CommandLineFlags::intxAtPut((char*)name, &value, origin) ? SUCCESS : ERR_OTHER;
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}
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// set a uintx global flag
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int WriteableFlags::set_uintx_flag(const char* name, const char* arg, Flag::Flags origin, FormatBuffer<80>& err_msg) {
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uintx value;
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if (sscanf(arg, UINTX_FORMAT, &value)) {
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return set_uintx_flag(name, value, origin, err_msg);
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}
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err_msg.print("flag value must be an unsigned integer");
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return WRONG_FORMAT;
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}
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int WriteableFlags::set_uintx_flag(const char* name, uintx value, Flag::Flags origin, FormatBuffer<80>& err_msg) {
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if (strncmp(name, "MaxHeapFreeRatio", 17) == 0) {
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if (!Arguments::verify_MaxHeapFreeRatio(err_msg, value)) {
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return OUT_OF_BOUNDS;
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}
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} else if (strncmp(name, "MinHeapFreeRatio", 17) == 0) {
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if (!Arguments::verify_MinHeapFreeRatio(err_msg, value)) {
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return OUT_OF_BOUNDS;
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}
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}
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return CommandLineFlags::uintxAtPut((char*)name, &value, origin) ? SUCCESS : ERR_OTHER;
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}
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// set a uint64_t global flag
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int WriteableFlags::set_uint64_t_flag(const char* name, const char* arg, Flag::Flags origin, FormatBuffer<80>& err_msg) {
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uint64_t value;
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if (sscanf(arg, UINT64_FORMAT, &value)) {
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return set_uint64_t_flag(name, value, origin, err_msg);
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}
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err_msg.print("flag value must be an unsigned 64-bit integer");
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return WRONG_FORMAT;
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}
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int WriteableFlags::set_uint64_t_flag(const char* name, uint64_t value, Flag::Flags origin, FormatBuffer<80>& err_msg) {
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return CommandLineFlags::uint64_tAtPut((char*)name, &value, origin) ? SUCCESS : ERR_OTHER;
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}
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// set a size_t global flag
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int WriteableFlags::set_size_t_flag(const char* name, const char* arg, Flag::Flags origin, FormatBuffer<80>& err_msg) {
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size_t value;
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if (sscanf(arg, SIZE_FORMAT, &value)) {
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return set_size_t_flag(name, value, origin, err_msg);
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}
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err_msg.print("flag value must be an unsigned integer");
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return WRONG_FORMAT;
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}
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int WriteableFlags::set_size_t_flag(const char* name, size_t value, Flag::Flags origin, FormatBuffer<80>& err_msg) {
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return CommandLineFlags::size_tAtPut((char*)name, &value, origin) ? SUCCESS : ERR_OTHER;
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}
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// set a string global flag using value from AttachOperation
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int WriteableFlags::set_ccstr_flag(const char* name, const char* arg, Flag::Flags origin, FormatBuffer<80>& err_msg) {
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bool res = CommandLineFlags::ccstrAtPut((char*)name, &arg, origin);
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return res? SUCCESS : ERR_OTHER;
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}
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/* sets a writeable flag to the provided value
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*
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* - return status is one of the WriteableFlags::err enum values
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* - an eventual error message will be generated to the provided err_msg buffer
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*/
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int WriteableFlags::set_flag(const char* flag_name, const char* flag_value, Flag::Flags origin, FormatBuffer<80>& err_msg) {
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return set_flag(flag_name, &flag_value, set_flag_from_char, origin, err_msg);
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}
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/* sets a writeable flag to the provided value
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*
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* - return status is one of the WriteableFlags::err enum values
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* - an eventual error message will be generated to the provided err_msg buffer
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*/
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int WriteableFlags::set_flag(const char* flag_name, jvalue flag_value, Flag::Flags origin, FormatBuffer<80>& err_msg) {
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return set_flag(flag_name, &flag_value, set_flag_from_jvalue, origin, err_msg);
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}
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// a writeable flag setter accepting either 'jvalue' or 'char *' values
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int WriteableFlags::set_flag(const char* name, const void* value, int(*setter)(Flag*,const void*,Flag::Flags,FormatBuffer<80>&), Flag::Flags origin, FormatBuffer<80>& err_msg) {
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if (name == NULL) {
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err_msg.print("flag name is missing");
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return MISSING_NAME;
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}
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if (value == NULL) {
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err_msg.print("flag value is missing");
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return MISSING_VALUE;
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}
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Flag* f = Flag::find_flag((char*)name, strlen(name));
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if (f) {
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// only writeable flags are allowed to be set
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if (f->is_writeable()) {
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return setter(f, value, origin, err_msg);
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} else {
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err_msg.print("only 'writeable' flags can be set");
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return NON_WRITABLE;
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}
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}
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err_msg.print("flag %s does not exist", name);
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return INVALID_FLAG;
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}
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// a writeable flag setter accepting 'char *' values
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int WriteableFlags::set_flag_from_char(Flag* f, const void* value, Flag::Flags origin, FormatBuffer<80>& err_msg) {
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char* flag_value = *(char**)value;
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if (flag_value == NULL) {
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err_msg.print("flag value is missing");
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return MISSING_VALUE;
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}
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if (f->is_bool()) {
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return set_bool_flag(f->_name, flag_value, origin, err_msg);
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} else if (f->is_intx()) {
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return set_intx_flag(f->_name, flag_value, origin, err_msg);
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} else if (f->is_uintx()) {
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return set_uintx_flag(f->_name, flag_value, origin, err_msg);
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} else if (f->is_uint64_t()) {
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return set_uint64_t_flag(f->_name, flag_value, origin, err_msg);
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} else if (f->is_size_t()) {
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return set_size_t_flag(f->_name, flag_value, origin, err_msg);
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} else if (f->is_ccstr()) {
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return set_ccstr_flag(f->_name, flag_value, origin, err_msg);
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} else {
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ShouldNotReachHere();
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}
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return ERR_OTHER;
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}
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// a writeable flag setter accepting 'jvalue' values
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int WriteableFlags::set_flag_from_jvalue(Flag* f, const void* value, Flag::Flags origin, FormatBuffer<80>& err_msg) {
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jvalue new_value = *(jvalue*)value;
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if (f->is_bool()) {
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bool bvalue = (new_value.z == JNI_TRUE ? true : false);
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return set_bool_flag(f->_name, bvalue, origin, err_msg);
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} else if (f->is_intx()) {
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intx ivalue = (intx)new_value.j;
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return set_intx_flag(f->_name, ivalue, origin, err_msg);
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} else if (f->is_uintx()) {
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uintx uvalue = (uintx)new_value.j;
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return set_uintx_flag(f->_name, uvalue, origin, err_msg);
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} else if (f->is_uint64_t()) {
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uint64_t uvalue = (uint64_t)new_value.j;
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return set_uint64_t_flag(f->_name, uvalue, origin, err_msg);
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} else if (f->is_size_t()) {
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size_t svalue = (size_t)new_value.j;
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return set_size_t_flag(f->_name, svalue, origin, err_msg);
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} else if (f->is_ccstr()) {
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oop str = JNIHandles::resolve_external_guard(new_value.l);
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if (str == NULL) {
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err_msg.print("flag value is missing");
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return MISSING_VALUE;
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}
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ccstr svalue = java_lang_String::as_utf8_string(str);
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int ret = WriteableFlags::set_ccstr_flag(f->_name, svalue, origin, err_msg);
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if (ret != SUCCESS) {
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FREE_C_HEAP_ARRAY(char, svalue);
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}
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return ret;
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} else {
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ShouldNotReachHere();
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}
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return ERR_OTHER;
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}
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