libsanitizer/sanitizer_common/sancov_flags.cpp

   1 //===-- sancov_flags.cpp ----------------------------------------*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // Sanitizer Coverage runtime flags.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #include "sancov_flags.h"
  14 #include "sanitizer_flag_parser.h"
  15 #include "sanitizer_platform.h"
  16
  17 SANITIZER_INTERFACE_WEAK_DEF(const char*, __sancov_default_options, void) {
  18   return "";
  19 }
  20
  21 using namespace __sanitizer;
  22
  23 namespace __sancov {
  24
  25 SancovFlags sancov_flags_dont_use_directly;  // use via flags();
  26
  27 void SancovFlags::SetDefaults() {
  28 #define SANCOV_FLAG(Type, Name, DefaultValue, Description) Name = DefaultValue;
  29 #include "sancov_flags.inc"
  30 #undef SANCOV_FLAG
  31 }
  32
  33 static void RegisterSancovFlags(FlagParser *parser, SancovFlags *f) {
  34 #define SANCOV_FLAG(Type, Name, DefaultValue, Description) \
  35   RegisterFlag(parser, #Name, Description, &f->Name);
  36 #include "sancov_flags.inc"
  37 #undef SANCOV_FLAG
  38 }
  39
  40 static const char *MaybeCallSancovDefaultOptions() {
  41   return (&__sancov_default_options) ? __sancov_default_options() : "";
  42 }
  43
  44 void InitializeSancovFlags() {
  45   SancovFlags *f = sancov_flags();
  46   f->SetDefaults();
  47
  48   FlagParser parser;
  49   RegisterSancovFlags(&parser, f);
  50
  51   parser.ParseString(MaybeCallSancovDefaultOptions());
  52   parser.ParseStringFromEnv("SANCOV_OPTIONS");
  53
  54   ReportUnrecognizedFlags();
  55   if (f->help) parser.PrintFlagDescriptions();
  56 }
  57
  58 }  // namespace __sancov