compiler-rt/lib/tsan/tests/rtl/tsan_thread.cpp

   1 //===-- tsan_thread.cpp ---------------------------------------------------===//
   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 // This file is a part of ThreadSanitizer (TSan), a race detector.
  10 //
  11 //===----------------------------------------------------------------------===//
  12 #include "tsan_test_util.h"
  13 #include "gtest/gtest.h"
  14
  15 TEST_F(ThreadSanitizer, ThreadSync) {
  16   MainThread t0;
  17   MemLoc l;
  18   t0.Write1(l);
  19   {
  20     ScopedThread t1;
  21     t1.Write1(l);
  22   }
  23   t0.Write1(l);
  24 }
  25
  26 TEST_F(ThreadSanitizer, ThreadDetach1) {
  27   ScopedThread t1(true);
  28   MemLoc l;
  29   t1.Write1(l);
  30 }
  31
  32 TEST_F(ThreadSanitizer, ThreadDetach2) {
  33   ScopedThread t1;
  34   MemLoc l;
  35   t1.Write1(l);
  36   t1.Detach();
  37 }
  38
  39 static void *thread_alot_func(void *arg) {
  40   (void)arg;
  41   int usleep(unsigned);
  42   usleep(50);
  43   return 0;
  44 }
  45
  46 TEST(DISABLED_SLOW_ThreadSanitizer, ThreadALot) {
  47   const int kThreads = 70000;
  48   const int kAlive = 1000;
  49   pthread_t threads[kAlive] = {};
  50   for (int i = 0; i < kThreads; i++) {
  51     if (threads[i % kAlive])
  52       pthread_join(threads[i % kAlive], 0);
  53     pthread_create(&threads[i % kAlive], 0, thread_alot_func, 0);
  54   }
  55   for (int i = 0; i < kAlive; i++) {
  56     pthread_join(threads[i], 0);
  57   }
  58 }