forked from OSchip/llvm-project
92 lines
2.5 KiB
C++
92 lines
2.5 KiB
C++
//===-- options_parser.cpp --------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "gwp_asan/optional/options_parser.h"
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#include <stdarg.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include "gwp_asan/options.h"
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#include "sanitizer_common/sanitizer_common.h"
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#include "sanitizer_common/sanitizer_flag_parser.h"
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#include "sanitizer_common/sanitizer_flags.h"
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namespace gwp_asan {
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namespace options {
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namespace {
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void registerGwpAsanFlags(__sanitizer::FlagParser *parser, Options *o) {
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#define GWP_ASAN_OPTION(Type, Name, DefaultValue, Description) \
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RegisterFlag(parser, #Name, Description, &o->Name);
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#include "gwp_asan/options.inc"
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#undef GWP_ASAN_OPTION
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}
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const char *getCompileDefinitionGwpAsanDefaultOptions() {
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#ifdef GWP_ASAN_DEFAULT_OPTIONS
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return SANITIZER_STRINGIFY(GWP_ASAN_DEFAULT_OPTIONS);
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#else
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return "";
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#endif
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}
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const char *getGwpAsanDefaultOptions() {
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return (__gwp_asan_default_options) ? __gwp_asan_default_options() : "";
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}
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Options *getOptionsInternal() {
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static Options GwpAsanFlags;
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return &GwpAsanFlags;
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}
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} // anonymous namespace
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void initOptions() {
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__sanitizer::SetCommonFlagsDefaults();
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Options *o = getOptionsInternal();
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o->setDefaults();
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__sanitizer::FlagParser Parser;
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registerGwpAsanFlags(&Parser, o);
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// Override from compile definition.
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Parser.ParseString(getCompileDefinitionGwpAsanDefaultOptions());
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// Override from user-specified string.
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Parser.ParseString(getGwpAsanDefaultOptions());
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// Override from environment.
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Parser.ParseString(__sanitizer::GetEnv("GWP_ASAN_OPTIONS"));
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__sanitizer::InitializeCommonFlags();
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if (__sanitizer::Verbosity())
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__sanitizer::ReportUnrecognizedFlags();
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if (!o->Enabled)
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return;
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// Sanity checks for the parameters.
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if (o->MaxSimultaneousAllocations <= 0) {
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__sanitizer::Printf("GWP-ASan ERROR: MaxSimultaneousAllocations must be > "
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"0 when GWP-ASan is enabled.\n");
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exit(EXIT_FAILURE);
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}
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if (o->SampleRate < 1) {
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__sanitizer::Printf(
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"GWP-ASan ERROR: SampleRate must be > 0 when GWP-ASan is enabled.\n");
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exit(EXIT_FAILURE);
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}
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}
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Options &getOptions() { return *getOptionsInternal(); }
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} // namespace options
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} // namespace gwp_asan
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