356 lines
12 KiB
C++
356 lines
12 KiB
C++
/*
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* Copyright (c) 2011, 2019, 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 "jvm.h"
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#include "memory/allocation.inline.hpp"
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#include "memory/resourceArea.hpp"
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#include "runtime/thread.hpp"
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#include "services/diagnosticArgument.hpp"
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StringArrayArgument::StringArrayArgument() {
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_array = new(ResourceObj::C_HEAP, mtInternal)GrowableArray<char *>(32, true);
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assert(_array != NULL, "Sanity check");
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}
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StringArrayArgument::~StringArrayArgument() {
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for (int i=0; i<_array->length(); i++) {
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FREE_C_HEAP_ARRAY(char, _array->at(i));
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}
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delete _array;
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}
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void StringArrayArgument::add(const char* str, size_t len) {
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if (str != NULL) {
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char* ptr = NEW_C_HEAP_ARRAY(char, len+1, mtInternal);
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strncpy(ptr, str, len);
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ptr[len] = 0;
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_array->append(ptr);
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}
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}
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void GenDCmdArgument::read_value(const char* str, size_t len, TRAPS) {
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/* NOTE:Some argument types doesn't require a value,
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* for instance boolean arguments: "enableFeatureX". is
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* equivalent to "enableFeatureX=true". In these cases,
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* str will be null. This is perfectly valid.
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* All argument types must perform null checks on str.
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*/
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if (is_set() && !allow_multiple()) {
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THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
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"Duplicates in diagnostic command arguments\n");
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}
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parse_value(str, len, CHECK);
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set_is_set(true);
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}
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void GenDCmdArgument::to_string(jlong l, char* buf, size_t len) const {
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jio_snprintf(buf, len, INT64_FORMAT, l);
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}
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void GenDCmdArgument::to_string(bool b, char* buf, size_t len) const {
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jio_snprintf(buf, len, b ? "true" : "false");
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}
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void GenDCmdArgument::to_string(NanoTimeArgument n, char* buf, size_t len) const {
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jio_snprintf(buf, len, INT64_FORMAT, n._nanotime);
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}
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void GenDCmdArgument::to_string(MemorySizeArgument m, char* buf, size_t len) const {
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jio_snprintf(buf, len, INT64_FORMAT, m._size);
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}
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void GenDCmdArgument::to_string(char* c, char* buf, size_t len) const {
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jio_snprintf(buf, len, "%s", (c != NULL) ? c : "");
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}
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void GenDCmdArgument::to_string(StringArrayArgument* f, char* buf, size_t len) const {
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int length = f->array()->length();
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size_t written = 0;
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buf[0] = 0;
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for (int i = 0; i < length; i++) {
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char* next_str = f->array()->at(i);
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size_t next_size = strlen(next_str);
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//Check if there's room left to write next element
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if (written + next_size > len) {
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return;
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}
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//Actually write element
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strcat(buf, next_str);
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written += next_size;
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//Check if there's room left for the comma
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if (i < length-1 && len - written > 0) {
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strcat(buf, ",");
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}
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}
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}
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template <> void DCmdArgument<jlong>::parse_value(const char* str,
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size_t len, TRAPS) {
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int scanned = -1;
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if (str == NULL
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|| sscanf(str, JLONG_FORMAT "%n", &_value, &scanned) != 1
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|| (size_t)scanned != len)
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{
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ResourceMark rm;
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char* buf = NEW_RESOURCE_ARRAY(char, len + 1);
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strncpy(buf, str, len);
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buf[len] = '\0';
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Exceptions::fthrow(THREAD_AND_LOCATION, vmSymbols::java_lang_IllegalArgumentException(),
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"Integer parsing error in command argument '%s'. Could not parse: %s.\n", _name, buf);
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}
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}
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template <> void DCmdArgument<jlong>::init_value(TRAPS) {
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if (has_default()) {
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this->parse_value(_default_string, strlen(_default_string), THREAD);
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if (HAS_PENDING_EXCEPTION) {
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fatal("Default string must be parseable");
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}
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} else {
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set_value(0);
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}
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}
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template <> void DCmdArgument<jlong>::destroy_value() { }
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template <> void DCmdArgument<bool>::parse_value(const char* str,
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size_t len, TRAPS) {
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// len is the length of the current token starting at str
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if (len == 0) {
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set_value(true);
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} else {
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if (len == strlen("true") && strncasecmp(str, "true", len) == 0) {
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set_value(true);
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} else if (len == strlen("false") && strncasecmp(str, "false", len) == 0) {
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set_value(false);
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} else {
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ResourceMark rm;
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char* buf = NEW_RESOURCE_ARRAY(char, len + 1);
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PRAGMA_DIAG_PUSH
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PRAGMA_STRINGOP_TRUNCATION_IGNORED
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// This code can incorrectly cause a "stringop-truncation" warning with gcc
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strncpy(buf, str, len);
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PRAGMA_DIAG_POP
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buf[len] = '\0';
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Exceptions::fthrow(THREAD_AND_LOCATION, vmSymbols::java_lang_IllegalArgumentException(),
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"Boolean parsing error in command argument '%s'. Could not parse: %s.\n", _name, buf);
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}
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}
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}
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template <> void DCmdArgument<bool>::init_value(TRAPS) {
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if (has_default()) {
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this->parse_value(_default_string, strlen(_default_string), THREAD);
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if (HAS_PENDING_EXCEPTION) {
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fatal("Default string must be parsable");
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}
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} else {
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set_value(false);
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}
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}
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template <> void DCmdArgument<bool>::destroy_value() { }
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template <> void DCmdArgument<char*>::parse_value(const char* str,
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size_t len, TRAPS) {
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if (str == NULL) {
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_value = NULL;
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} else {
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_value = NEW_C_HEAP_ARRAY(char, len + 1, mtInternal);
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int n = os::snprintf(_value, len + 1, "%.*s", (int)len, str);
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assert((size_t)n <= len, "Unexpected number of characters in string");
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}
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}
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template <> void DCmdArgument<char*>::init_value(TRAPS) {
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if (has_default() && _default_string != NULL) {
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this->parse_value(_default_string, strlen(_default_string), THREAD);
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if (HAS_PENDING_EXCEPTION) {
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fatal("Default string must be parsable");
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}
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} else {
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set_value(NULL);
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}
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}
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template <> void DCmdArgument<char*>::destroy_value() {
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FREE_C_HEAP_ARRAY(char, _value);
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set_value(NULL);
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}
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template <> void DCmdArgument<NanoTimeArgument>::parse_value(const char* str,
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size_t len, TRAPS) {
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if (str == NULL) {
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THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
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"Integer parsing error nanotime value: syntax error, value is null\n");
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}
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int argc = sscanf(str, JLONG_FORMAT, &_value._time);
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if (argc != 1) {
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THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
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"Integer parsing error nanotime value: syntax error\n");
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}
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size_t idx = 0;
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while(idx < len && isdigit(str[idx])) {
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idx++;
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}
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if (idx == len) {
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// only accept missing unit if the value is 0
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if (_value._time != 0) {
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THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
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"Integer parsing error nanotime value: unit required\n");
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} else {
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_value._nanotime = 0;
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strcpy(_value._unit, "ns");
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return;
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}
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} else if(len - idx > 2) {
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THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
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"Integer parsing error nanotime value: illegal unit\n");
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} else {
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strncpy(_value._unit, &str[idx], len - idx);
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/*Write an extra null termination. This is safe because _value._unit
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* is declared as char[3], and length is checked to be not larger than
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* two above. Also, this is necessary, since length might be 1, and the
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* default value already in the string is ns, which is two chars.
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*/
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_value._unit[len-idx] = '\0';
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}
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if (strcmp(_value._unit, "ns") == 0) {
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_value._nanotime = _value._time;
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} else if (strcmp(_value._unit, "us") == 0) {
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_value._nanotime = _value._time * 1000;
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} else if (strcmp(_value._unit, "ms") == 0) {
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_value._nanotime = _value._time * 1000 * 1000;
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} else if (strcmp(_value._unit, "s") == 0) {
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_value._nanotime = _value._time * 1000 * 1000 * 1000;
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} else if (strcmp(_value._unit, "m") == 0) {
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_value._nanotime = _value._time * 60 * 1000 * 1000 * 1000;
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} else if (strcmp(_value._unit, "h") == 0) {
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_value._nanotime = _value._time * 60 * 60 * 1000 * 1000 * 1000;
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} else if (strcmp(_value._unit, "d") == 0) {
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_value._nanotime = _value._time * 24 * 60 * 60 * 1000 * 1000 * 1000;
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} else {
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THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
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"Integer parsing error nanotime value: illegal unit\n");
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}
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}
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template <> void DCmdArgument<NanoTimeArgument>::init_value(TRAPS) {
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if (has_default()) {
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this->parse_value(_default_string, strlen(_default_string), THREAD);
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if (HAS_PENDING_EXCEPTION) {
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fatal("Default string must be parsable");
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}
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} else {
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_value._time = 0;
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_value._nanotime = 0;
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strcpy(_value._unit, "ns");
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}
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}
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template <> void DCmdArgument<NanoTimeArgument>::destroy_value() { }
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// WARNING StringArrayArgument can only be used as an option, it cannot be
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// used as an argument with the DCmdParser
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template <> void DCmdArgument<StringArrayArgument*>::parse_value(const char* str,
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size_t len, TRAPS) {
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_value->add(str,len);
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}
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template <> void DCmdArgument<StringArrayArgument*>::init_value(TRAPS) {
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_value = new StringArrayArgument();
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_allow_multiple = true;
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if (has_default()) {
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fatal("StringArrayArgument cannot have default value");
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}
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}
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template <> void DCmdArgument<StringArrayArgument*>::destroy_value() {
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if (_value != NULL) {
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delete _value;
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set_value(NULL);
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}
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}
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template <> void DCmdArgument<MemorySizeArgument>::parse_value(const char* str,
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size_t len, TRAPS) {
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if (str == NULL) {
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THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
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"Parsing error memory size value: syntax error, value is null\n");
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}
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if (*str == '-') {
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THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
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"Parsing error memory size value: negative values not allowed\n");
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}
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int res = sscanf(str, UINT64_FORMAT "%c", &_value._val, &_value._multiplier);
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if (res == 2) {
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switch (_value._multiplier) {
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case 'k': case 'K':
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_value._size = _value._val * 1024;
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break;
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case 'm': case 'M':
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_value._size = _value._val * 1024 * 1024;
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break;
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case 'g': case 'G':
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_value._size = _value._val * 1024 * 1024 * 1024;
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break;
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default:
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_value._size = _value._val;
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_value._multiplier = ' ';
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//default case should be to break with no error, since user
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//can write size in bytes, or might have a delimiter and next arg
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break;
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}
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} else if (res == 1) {
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_value._size = _value._val;
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} else {
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THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
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"Parsing error memory size value: invalid value\n");
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}
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}
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template <> void DCmdArgument<MemorySizeArgument>::init_value(TRAPS) {
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if (has_default()) {
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this->parse_value(_default_string, strlen(_default_string), THREAD);
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if (HAS_PENDING_EXCEPTION) {
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fatal("Default string must be parsable");
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}
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} else {
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_value._size = 0;
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_value._val = 0;
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_value._multiplier = ' ';
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}
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}
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template <> void DCmdArgument<MemorySizeArgument>::destroy_value() { }
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