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usr / src / contrib / llvm-project / compiler-rt / lib / tsan / rtl /

📁 ..
📄 tsan.syms.extra(573 B)
📄 tsan_clock.cpp(20.28 KB)
📄 tsan_clock.h(9.25 KB)
📄 tsan_debugging.cpp(9.28 KB)
📄 tsan_defs.h(4.68 KB)
📄 tsan_dense_alloc.h(3.97 KB)
📄 tsan_dispatch_defs.h(2.18 KB)
📄 tsan_external.cpp(3.97 KB)
📄 tsan_fd.cpp(9.02 KB)
📄 tsan_fd.h(2.39 KB)
📄 tsan_flags.cpp(3.47 KB)
📄 tsan_flags.h(1.09 KB)
📄 tsan_flags.inc(4.29 KB)
📄 tsan_ignoreset.cpp(1.04 KB)
📄 tsan_ignoreset.h(958 B)
📄 tsan_interceptors.h(2.18 KB)
📄 tsan_interceptors_libdispatch.cpp(31.46 KB)
📄 tsan_interceptors_mac.cpp(20.28 KB)
📄 tsan_interceptors_mach_vm.cpp(2.02 KB)
📄 tsan_interceptors_posix.cpp(89.69 KB)
📄 tsan_interface.cpp(4.35 KB)
📄 tsan_interface.h(17.5 KB)
📄 tsan_interface_ann.cpp(16.46 KB)
📄 tsan_interface_ann.h(1.02 KB)
📄 tsan_interface_atomic.cpp(25.88 KB)
📄 tsan_interface_inl.h(3.53 KB)
📄 tsan_interface_java.cpp(7.89 KB)
📄 tsan_interface_java.h(4.19 KB)
📄 tsan_malloc_mac.cpp(3.45 KB)
📄 tsan_md5.cpp(6.9 KB)
📄 tsan_mman.cpp(12.08 KB)
📄 tsan_mman.h(2.61 KB)
📄 tsan_mutex.cpp(7.88 KB)
📄 tsan_mutex.h(1.92 KB)
📄 tsan_mutexset.cpp(2.01 KB)
📄 tsan_mutexset.h(1.88 KB)
📄 tsan_new_delete.cpp(6.72 KB)
📄 tsan_platform.h(33.68 KB)
📄 tsan_platform_linux.cpp(16.09 KB)
📄 tsan_platform_mac.cpp(11.81 KB)
📄 tsan_platform_posix.cpp(5.72 KB)
📄 tsan_platform_windows.cpp(922 B)
📄 tsan_ppc_regs.h(1.35 KB)
📄 tsan_preinit.cpp(1021 B)
📄 tsan_report.cpp(15.63 KB)
📄 tsan_report.h(2.79 KB)
📄 tsan_rtl.cpp(34.92 KB)
📄 tsan_rtl.h(28.13 KB)
📄 tsan_rtl_aarch64.S(5.63 KB)
📄 tsan_rtl_amd64.S(8.71 KB)
📄 tsan_rtl_mips64.S(3.69 KB)
📄 tsan_rtl_mutex.cpp(18.71 KB)
📄 tsan_rtl_ppc64.S(8.18 KB)
📄 tsan_rtl_proc.cpp(1.66 KB)
📄 tsan_rtl_report.cpp(23.51 KB)
📄 tsan_rtl_thread.cpp(13.82 KB)
📄 tsan_stack_trace.cpp(1.91 KB)
📄 tsan_stack_trace.h(1.27 KB)
📄 tsan_stat.cpp(12.23 KB)
📄 tsan_stat.h(4.22 KB)
📄 tsan_suppressions.cpp(5.42 KB)
📄 tsan_suppressions.h(1.32 KB)
📄 tsan_symbolize.cpp(3.85 KB)
📄 tsan_symbolize.h(897 B)
📄 tsan_sync.cpp(8.44 KB)
📄 tsan_sync.h(4.88 KB)
📄 tsan_trace.h(1.89 KB)
📄 tsan_update_shadow_word_inl.h(2.22 KB)

Editing: tsan_suppressions.cpp

//===-- tsan_suppressions.cpp ---------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file is a part of ThreadSanitizer (TSan), a race detector.
//
//===----------------------------------------------------------------------===//

#include "sanitizer_common/sanitizer_common.h"
#include "sanitizer_common/sanitizer_libc.h"
#include "sanitizer_common/sanitizer_placement_new.h"
#include "sanitizer_common/sanitizer_suppressions.h"
#include "tsan_suppressions.h"
#include "tsan_rtl.h"
#include "tsan_flags.h"
#include "tsan_mman.h"
#include "tsan_platform.h"

#if !SANITIZER_GO
// Suppressions for true/false positives in standard libraries.
static const char *const std_suppressions =
// Libstdc++ 4.4 has data races in std::string.
// See http://crbug.com/181502 for an example.
"race:^_M_rep$\n"
"race:^_M_is_leaked$\n"
// False positive when using std <thread>.
// Happens because we miss atomic synchronization in libstdc++.
// See http://llvm.org/bugs/show_bug.cgi?id=17066 for details.
"race:std::_Sp_counted_ptr_inplace<std::thread::_Impl\n";

// Can be overriden in frontend.
SANITIZER_WEAK_DEFAULT_IMPL
const char *__tsan_default_suppressions() {
  return 0;
}
#endif

namespace __tsan {

ALIGNED(64) static char suppression_placeholder[sizeof(SuppressionContext)];
static SuppressionContext *suppression_ctx = nullptr;
static const char *kSuppressionTypes[] = {
    kSuppressionRace,   kSuppressionRaceTop, kSuppressionMutex,
    kSuppressionThread, kSuppressionSignal, kSuppressionLib,
    kSuppressionDeadlock};

void InitializeSuppressions() {
  CHECK_EQ(nullptr, suppression_ctx);
  suppression_ctx = new (suppression_placeholder)
      SuppressionContext(kSuppressionTypes, ARRAY_SIZE(kSuppressionTypes));
  suppression_ctx->ParseFromFile(flags()->suppressions);
#if !SANITIZER_GO
  suppression_ctx->Parse(__tsan_default_suppressions());
  suppression_ctx->Parse(std_suppressions);
#endif
}

SuppressionContext *Suppressions() {
  CHECK(suppression_ctx);
  return suppression_ctx;
}

static const char *conv(ReportType typ) {
  switch (typ) {
    case ReportTypeRace:
    case ReportTypeVptrRace:
    case ReportTypeUseAfterFree:
    case ReportTypeVptrUseAfterFree:
    case ReportTypeExternalRace:
      return kSuppressionRace;
    case ReportTypeThreadLeak:
      return kSuppressionThread;
    case ReportTypeMutexDestroyLocked:
    case ReportTypeMutexDoubleLock:
    case ReportTypeMutexInvalidAccess:
    case ReportTypeMutexBadUnlock:
    case ReportTypeMutexBadReadLock:
    case ReportTypeMutexBadReadUnlock:
      return kSuppressionMutex;
    case ReportTypeSignalUnsafe:
    case ReportTypeErrnoInSignal:
      return kSuppressionSignal;
    case ReportTypeDeadlock:
      return kSuppressionDeadlock;
    // No default case so compiler warns us if we miss one
  }
  UNREACHABLE("missing case");
}

static uptr IsSuppressed(const char *stype, const AddressInfo &info,
    Suppression **sp) {
  if (suppression_ctx->Match(info.function, stype, sp) ||
      suppression_ctx->Match(info.file, stype, sp) ||
      suppression_ctx->Match(info.module, stype, sp)) {
    VPrintf(2, "ThreadSanitizer: matched suppression '%s'\n", (*sp)->templ);
    atomic_fetch_add(&(*sp)->hit_count, 1, memory_order_relaxed);
    return info.address;
  }
  return 0;
}

uptr IsSuppressed(ReportType typ, const ReportStack *stack, Suppression **sp) {
  CHECK(suppression_ctx);
  if (!suppression_ctx->SuppressionCount() || stack == 0 ||
      !stack->suppressable)
    return 0;
  const char *stype = conv(typ);
  if (0 == internal_strcmp(stype, kSuppressionNone))
    return 0;
  for (const SymbolizedStack *frame = stack->frames; frame;
      frame = frame->next) {
    uptr pc = IsSuppressed(stype, frame->info, sp);
    if (pc != 0)
      return pc;
  }
  if (0 == internal_strcmp(stype, kSuppressionRace) && stack->frames != nullptr)
    return IsSuppressed(kSuppressionRaceTop, stack->frames->info, sp);
  return 0;
}

uptr IsSuppressed(ReportType typ, const ReportLocation *loc, Suppression **sp) {
  CHECK(suppression_ctx);
  if (!suppression_ctx->SuppressionCount() || loc == 0 ||
      loc->type != ReportLocationGlobal || !loc->suppressable)
    return 0;
  const char *stype = conv(typ);
  if (0 == internal_strcmp(stype, kSuppressionNone))
    return 0;
  Suppression *s;
  const DataInfo &global = loc->global;
  if (suppression_ctx->Match(global.name, stype, &s) ||
      suppression_ctx->Match(global.module, stype, &s)) {
      VPrintf(2, "ThreadSanitizer: matched suppression '%s'\n", s->templ);
      atomic_fetch_add(&s->hit_count, 1, memory_order_relaxed);
      *sp = s;
      return global.start;
  }
  return 0;
}

void PrintMatchedSuppressions() {
  InternalMmapVector<Suppression *> matched;
  CHECK(suppression_ctx);
  suppression_ctx->GetMatched(&matched);
  if (!matched.size())
    return;
  int hit_count = 0;
  for (uptr i = 0; i < matched.size(); i++)
    hit_count += atomic_load_relaxed(&matched[i]->hit_count);
  Printf("ThreadSanitizer: Matched %d suppressions (pid=%d):\n", hit_count,
         (int)internal_getpid());
  for (uptr i = 0; i < matched.size(); i++) {
    Printf("%d %s:%s\n", atomic_load_relaxed(&matched[i]->hit_count),
           matched[i]->type, matched[i]->templ);
  }
}
}  // namespace __tsan

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Editing: tsan_suppressions.cpp

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