7e2b15382c
Summary: As with other Sanitizers, and the current version of Scudo, we can provide flags in differents way: at compile time, through a weak function, through an environment variable. This change adds support for the configuration flags, and the string parsers. Those are fairly similar to the sanitizer_common way of doing things. Reviewers: morehouse, hctim, vitalybuka Reviewed By: morehouse, vitalybuka Subscribers: mgorny, delcypher, jdoerfert, #sanitizers, llvm-commits Tags: #llvm, #sanitizers Differential Revision: https://reviews.llvm.org/D59597 llvm-svn: 358011
58 lines
1.5 KiB
C++
58 lines
1.5 KiB
C++
//===-- flags.cc ------------------------------------------------*- 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 "flags.h"
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#include "common.h"
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#include "flags_parser.h"
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#include "interface.h"
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namespace scudo {
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Flags *getFlags() {
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static Flags F;
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return &F;
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}
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void Flags::setDefaults() {
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#define SCUDO_FLAG(Type, Name, DefaultValue, Description) Name = DefaultValue;
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#include "flags.inc"
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#undef SCUDO_FLAG
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}
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void registerFlags(FlagParser *Parser, Flags *F) {
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#define SCUDO_FLAG(Type, Name, DefaultValue, Description) \
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Parser->registerFlag(#Name, Description, FlagType::FT_##Type, \
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reinterpret_cast<void *>(&F->Name));
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#include "flags.inc"
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#undef SCUDO_FLAG
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}
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static const char *getCompileDefinitionScudoDefaultOptions() {
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#ifdef SCUDO_DEFAULT_OPTIONS
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return STRINGIFY(SCUDO_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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static const char *getScudoDefaultOptions() {
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return (&__scudo_default_options) ? __scudo_default_options() : "";
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}
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void initFlags() {
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Flags *F = getFlags();
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F->setDefaults();
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FlagParser Parser;
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registerFlags(&Parser, F);
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Parser.parseString(getCompileDefinitionScudoDefaultOptions());
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Parser.parseString(getScudoDefaultOptions());
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Parser.parseString(getEnv("SCUDO_OPTIONS"));
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}
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} // namespace scudo
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