127 lines
3.5 KiB
C++
127 lines
3.5 KiB
C++
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//===-- tsan_flags.cpp ----------------------------------------------------===//
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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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//
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// This file is a part of ThreadSanitizer (TSan), a race detector.
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//
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//===----------------------------------------------------------------------===//
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#include "sanitizer_common/sanitizer_flags.h"
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#include "sanitizer_common/sanitizer_flag_parser.h"
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#include "sanitizer_common/sanitizer_libc.h"
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#include "tsan_flags.h"
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#include "tsan_rtl.h"
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#include "tsan_mman.h"
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#include "ubsan/ubsan_flags.h"
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namespace __tsan {
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// Can be overriden in frontend.
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#ifdef TSAN_EXTERNAL_HOOKS
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extern "C" const char* __tsan_default_options();
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#else
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SANITIZER_WEAK_DEFAULT_IMPL
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const char *__tsan_default_options() {
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return "";
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}
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#endif
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void Flags::SetDefaults() {
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#define TSAN_FLAG(Type, Name, DefaultValue, Description) Name = DefaultValue;
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#include "tsan_flags.inc"
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#undef TSAN_FLAG
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// DDFlags
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second_deadlock_stack = false;
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}
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void RegisterTsanFlags(FlagParser *parser, Flags *f) {
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#define TSAN_FLAG(Type, Name, DefaultValue, Description) \
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RegisterFlag(parser, #Name, Description, &f->Name);
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#include "tsan_flags.inc"
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#undef TSAN_FLAG
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// DDFlags
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RegisterFlag(parser, "second_deadlock_stack",
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"Report where each mutex is locked in deadlock reports",
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&f->second_deadlock_stack);
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}
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void InitializeFlags(Flags *f, const char *env, const char *env_option_name) {
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SetCommonFlagsDefaults();
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{
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// Override some common flags defaults.
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CommonFlags cf;
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cf.CopyFrom(*common_flags());
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cf.external_symbolizer_path = GetEnv("TSAN_SYMBOLIZER_PATH");
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cf.allow_addr2line = true;
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if (SANITIZER_GO) {
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// Does not work as expected for Go: runtime handles SIGABRT and crashes.
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cf.abort_on_error = false;
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// Go does not have mutexes.
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cf.detect_deadlocks = false;
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}
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cf.print_suppressions = false;
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cf.stack_trace_format = " #%n %f %S %M";
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cf.exitcode = 66;
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cf.intercept_tls_get_addr = true;
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OverrideCommonFlags(cf);
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}
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f->SetDefaults();
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FlagParser parser;
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RegisterTsanFlags(&parser, f);
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RegisterCommonFlags(&parser);
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#if TSAN_CONTAINS_UBSAN
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__ubsan::Flags *uf = __ubsan::flags();
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uf->SetDefaults();
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FlagParser ubsan_parser;
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__ubsan::RegisterUbsanFlags(&ubsan_parser, uf);
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RegisterCommonFlags(&ubsan_parser);
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#endif
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// Let a frontend override.
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parser.ParseString(__tsan_default_options());
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#if TSAN_CONTAINS_UBSAN
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const char *ubsan_default_options = __ubsan_default_options();
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ubsan_parser.ParseString(ubsan_default_options);
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#endif
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// Override from command line.
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parser.ParseString(env, env_option_name);
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#if TSAN_CONTAINS_UBSAN
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ubsan_parser.ParseStringFromEnv("UBSAN_OPTIONS");
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#endif
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// Sanity check.
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if (!f->report_bugs) {
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f->report_thread_leaks = false;
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f->report_destroy_locked = false;
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f->report_signal_unsafe = false;
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}
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InitializeCommonFlags();
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if (Verbosity()) ReportUnrecognizedFlags();
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if (common_flags()->help) parser.PrintFlagDescriptions();
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if (f->history_size < 0 || f->history_size > 7) {
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Printf("ThreadSanitizer: incorrect value for history_size"
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" (must be [0..7])\n");
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Die();
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}
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if (f->io_sync < 0 || f->io_sync > 2) {
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Printf("ThreadSanitizer: incorrect value for io_sync"
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" (must be [0..2])\n");
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Die();
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}
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}
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} // namespace __tsan
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