Electroneum
threadpool.cpp
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28 
29 #include <atomic>
30 #include "gtest/gtest.h"
31 #include "misc_language.h"
32 #include "common/threadpool.h"
33 
34 TEST(threadpool, wait_nothing)
35 {
36  std::shared_ptr<tools::threadpool> tpool(tools::threadpool::getNewForUnitTests());
38  waiter.wait(tpool.get());
39 }
40 
41 TEST(threadpool, wait_waits)
42 {
43  std::shared_ptr<tools::threadpool> tpool(tools::threadpool::getNewForUnitTests());
45  std::atomic<bool> b(false);
46  tpool->submit(&waiter, [&b](){ epee::misc_utils::sleep_no_w(1000); b = true; });
47  ASSERT_FALSE(b);
48  waiter.wait(tpool.get());
49  ASSERT_TRUE(b);
50 }
51 
52 TEST(threadpool, one_thread)
53 {
54  std::shared_ptr<tools::threadpool> tpool(tools::threadpool::getNewForUnitTests(1));
56 
57  std::atomic<unsigned int> counter(0);
58  for (size_t n = 0; n < 4096; ++n)
59  {
60  tpool->submit(&waiter, [&counter](){++counter;});
61  }
62  waiter.wait(tpool.get());
63  ASSERT_EQ(counter, 4096);
64 }
65 
66 TEST(threadpool, many_threads)
67 {
68  std::shared_ptr<tools::threadpool> tpool(tools::threadpool::getNewForUnitTests(256));
70 
71  std::atomic<unsigned int> counter(0);
72  for (size_t n = 0; n < 4096; ++n)
73  {
74  tpool->submit(&waiter, [&counter](){++counter;});
75  }
76  waiter.wait(tpool.get());
77  ASSERT_EQ(counter, 4096);
78 }
79 
80 static uint64_t fibonacci(std::shared_ptr<tools::threadpool> tpool, uint64_t n)
81 {
82  if (n <= 1)
83  return n;
84  uint64_t f1, f2;
86  tpool->submit(&waiter, [&tpool, &f1, n](){ f1 = fibonacci(tpool, n-1); });
87  tpool->submit(&waiter, [&tpool, &f2, n](){ f2 = fibonacci(tpool, n-2); });
88  waiter.wait(tpool.get());
89  return f1 + f2;
90 }
91 
92 TEST(threadpool, reentrency)
93 {
94  std::shared_ptr<tools::threadpool> tpool(tools::threadpool::getNewForUnitTests(4));
96 
97  uint64_t f = fibonacci(tpool, 13);
98  waiter.wait(tpool.get());
99  ASSERT_EQ(f, 233);
100 }
101 
102 TEST(threadpool, reentrancy)
103 {
104  std::shared_ptr<tools::threadpool> tpool(tools::threadpool::getNewForUnitTests(4));
106 
107  uint64_t f = fibonacci(tpool, 13);
108  waiter.wait(tpool.get());
109  ASSERT_EQ(f, 233);
110 }
111 
112 TEST(threadpool, leaf_throws)
113 {
114  std::shared_ptr<tools::threadpool> tpool(tools::threadpool::getNewForUnitTests());
116 
117  bool thrown = false, executed = false;
118  tpool->submit(&waiter, [&](){
119  try { tpool->submit(&waiter, [&](){ executed = true; }); }
120  catch(const std::exception &e) { thrown = true; }
121  }, true);
122  waiter.wait(tpool.get());
123  ASSERT_TRUE(thrown);
124  ASSERT_FALSE(executed);
125 }
126 
127 TEST(threadpool, leaf_reentrancy)
128 {
129  std::shared_ptr<tools::threadpool> tpool(tools::threadpool::getNewForUnitTests(4));
131 
132  std::atomic<int> counter(0);
133  for (int i = 0; i < 1000; ++i)
134  {
135  tpool->submit(&waiter, [&](){
137  for (int j = 0; j < 500; ++j)
138  {
139  tpool->submit(&waiter, [&](){ ++counter; }, true);
140  }
141  waiter.wait(tpool.get());
142  });
143  }
144  waiter.wait(tpool.get());
145  ASSERT_EQ(counter, 500000);
146 }
TEST(threadpool, wait_nothing)
Definition: threadpool.cpp:34
static threadpool * getNewForUnitTests(unsigned max_threads=0)
Definition: threadpool.h:50
#define ASSERT_FALSE(condition)
Definition: gtest.h:1868
#define ASSERT_EQ(val1, val2)
Definition: gtest.h:1956
void wait(threadpool *tpool)
Definition: threadpool.cpp:115
unsigned __int64 uint64_t
Definition: stdint.h:136
bool sleep_no_w(long ms)
#define ASSERT_TRUE(condition)
Definition: gtest.h:1865
const T1 & f1
Definition: gtest-tuple.h:683
const T1 const T2 & f2
Definition: gtest-tuple.h:688