e4c1dd2c08
TSan recently got the "ignore_noninstrumented_modules" flag, which disables tracking of read and writes that come from noninstrumented modules (via interceptors). This is a way of suppressing false positives coming from system libraries and other noninstrumented code. This patch turns this on by default on Darwin, where it's supposed to replace the previous solution, "ignore_interceptors_accesses", which disables tracking in *all* interceptors. The new approach should re-enable TSan's ability to find races via interceptors on Darwin. Differential Revision: https://reviews.llvm.org/D29041 llvm-svn: 292981
87 lines
4.2 KiB
C++
87 lines
4.2 KiB
C++
//===-- tsan_flags.inc ------------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// TSan runtime flags.
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//
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//===----------------------------------------------------------------------===//
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#ifndef TSAN_FLAG
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# error "Define TSAN_FLAG prior to including this file!"
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#endif
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// TSAN_FLAG(Type, Name, DefaultValue, Description)
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// See COMMON_FLAG in sanitizer_flags.inc for more details.
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TSAN_FLAG(bool, enable_annotations, true,
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"Enable dynamic annotations, otherwise they are no-ops.")
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// Suppress a race report if we've already output another race report
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// with the same stack.
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TSAN_FLAG(bool, suppress_equal_stacks, true,
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"Suppress a race report if we've already output another race report "
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"with the same stack.")
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TSAN_FLAG(bool, suppress_equal_addresses, true,
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"Suppress a race report if we've already output another race report "
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"on the same address.")
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TSAN_FLAG(bool, report_bugs, true,
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"Turns off bug reporting entirely (useful for benchmarking).")
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TSAN_FLAG(bool, report_thread_leaks, true, "Report thread leaks at exit?")
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TSAN_FLAG(bool, report_destroy_locked, true,
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"Report destruction of a locked mutex?")
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TSAN_FLAG(bool, report_mutex_bugs, true,
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"Report incorrect usages of mutexes and mutex annotations?")
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TSAN_FLAG(bool, report_signal_unsafe, true,
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"Report violations of async signal-safety "
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"(e.g. malloc() call from a signal handler).")
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TSAN_FLAG(bool, report_atomic_races, true,
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"Report races between atomic and plain memory accesses.")
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TSAN_FLAG(
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bool, force_seq_cst_atomics, false,
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"If set, all atomics are effectively sequentially consistent (seq_cst), "
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"regardless of what user actually specified.")
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TSAN_FLAG(bool, print_benign, false, "Print matched \"benign\" races at exit.")
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TSAN_FLAG(bool, halt_on_error, false, "Exit after first reported error.")
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TSAN_FLAG(int, atexit_sleep_ms, 1000,
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"Sleep in main thread before exiting for that many ms "
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"(useful to catch \"at exit\" races).")
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TSAN_FLAG(const char *, profile_memory, "",
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"If set, periodically write memory profile to that file.")
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TSAN_FLAG(int, flush_memory_ms, 0, "Flush shadow memory every X ms.")
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TSAN_FLAG(int, flush_symbolizer_ms, 5000, "Flush symbolizer caches every X ms.")
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TSAN_FLAG(
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int, memory_limit_mb, 0,
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"Resident memory limit in MB to aim at."
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"If the process consumes more memory, then TSan will flush shadow memory.")
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TSAN_FLAG(bool, stop_on_start, false,
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"Stops on start until __tsan_resume() is called (for debugging).")
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TSAN_FLAG(bool, running_on_valgrind, false,
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"Controls whether RunningOnValgrind() returns true or false.")
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// There are a lot of goroutines in Go, so we use smaller history.
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TSAN_FLAG(
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int, history_size, SANITIZER_GO ? 1 : 3,
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"Per-thread history size, controls how many previous memory accesses "
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"are remembered per thread. Possible values are [0..7]. "
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"history_size=0 amounts to 32K memory accesses. Each next value doubles "
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"the amount of memory accesses, up to history_size=7 that amounts to "
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"4M memory accesses. The default value is 2 (128K memory accesses).")
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TSAN_FLAG(int, io_sync, 1,
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"Controls level of synchronization implied by IO operations. "
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"0 - no synchronization "
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"1 - reasonable level of synchronization (write->read)"
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"2 - global synchronization of all IO operations.")
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TSAN_FLAG(bool, die_after_fork, true,
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"Die after multi-threaded fork if the child creates new threads.")
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TSAN_FLAG(const char *, suppressions, "", "Suppressions file name.")
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TSAN_FLAG(bool, ignore_interceptors_accesses, false,
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"Ignore reads and writes from all interceptors.")
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TSAN_FLAG(bool, ignore_noninstrumented_modules, SANITIZER_MAC ? true : false,
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"Interceptors should only detect races when called from instrumented "
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"modules.")
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TSAN_FLAG(bool, shared_ptr_interceptor, true,
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"Track atomic reference counting in libc++ shared_ptr and weak_ptr.")
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