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//===-- flags.cpp -----------------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "flags.h"
#include "common.h"
#include "flags_parser.h"
#include "scudo/interface.h"
namespace scudo {
Flags *getFlags() {
static Flags F;
return &F;
}
void Flags::setDefaults() {
#define SCUDO_FLAG(Type, Name, DefaultValue, Description) Name = DefaultValue;
#include "flags.inc"
#undef SCUDO_FLAG
#ifdef GWP_ASAN_HOOKS
#define GWP_ASAN_OPTION(Type, Name, DefaultValue, Description) \
GWP_ASAN_##Name = DefaultValue;
#include "gwp_asan/options.inc"
#undef GWP_ASAN_OPTION
#endif // GWP_ASAN_HOOKS
}
void registerFlags(FlagParser *Parser, Flags *F) {
#define SCUDO_FLAG(Type, Name, DefaultValue, Description) \
Parser->registerFlag(#Name, Description, FlagType::FT_##Type, \
reinterpret_cast<void *>(&F->Name));
#include "flags.inc"
#undef SCUDO_FLAG
#ifdef GWP_ASAN_HOOKS
#define GWP_ASAN_OPTION(Type, Name, DefaultValue, Description) \
Parser->registerFlag("GWP_ASAN_" #Name, Description, FlagType::FT_##Type, \
reinterpret_cast<void *>(&F->GWP_ASAN_##Name));
#include "gwp_asan/options.inc"
#undef GWP_ASAN_OPTION
#endif // GWP_ASAN_HOOKS
}
static const char *getCompileDefinitionScudoDefaultOptions() {
#ifdef SCUDO_DEFAULT_OPTIONS
return STRINGIFY(SCUDO_DEFAULT_OPTIONS);
#else
return "";
#endif
}
static const char *getScudoDefaultOptions() {
return (&__scudo_default_options) ? __scudo_default_options() : "";
}
void initFlags() {
Flags *F = getFlags();
F->setDefaults();
FlagParser Parser;
registerFlags(&Parser, F);
Parser.parseString(getCompileDefinitionScudoDefaultOptions());
Parser.parseString(getScudoDefaultOptions());
Parser.parseString(getEnv("SCUDO_OPTIONS"));
if (const char *V = getEnv("SCUDO_ALLOCATION_RING_BUFFER_SIZE")) {
Parser.parseStringPair("allocation_ring_buffer_size", V);
}
}
} // namespace scudo
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