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#include "mutex.h"
#include "guard.h"
#include "condvar.h"
#include <library/cpp/testing/unittest/registar.h>
#include <util/system/atomic.h>
#include <util/system/atomic_ops.h>
#include <util/thread/pool.h>
class TCondVarTest: public TTestBase {
UNIT_TEST_SUITE(TCondVarTest);
UNIT_TEST(TestBasics)
UNIT_TEST(TestSyncronize)
UNIT_TEST_SUITE_END();
struct TSharedData {
TSharedData()
: stopWaiting(false)
, in(0)
, out(0)
, waited(0)
, failed(false)
{
}
TMutex mutex;
TCondVar condVar1;
TCondVar condVar2;
TAtomic stopWaiting;
TAtomic in;
TAtomic out;
TAtomic waited;
bool failed;
};
class TThreadTask: public IObjectInQueue {
public:
using PFunc = void (TThreadTask::*)(void);
TThreadTask(PFunc func, size_t id, size_t totalIds, TSharedData& data)
: Func_(func)
, Id_(id)
, TotalIds_(totalIds)
, Data_(data)
{
}
void Process(void*) override {
THolder<TThreadTask> This(this);
(this->*Func_)();
}
#define FAIL_ASSERT(cond) \
if (!(cond)) { \
Data_.failed = true; \
}
void RunBasics() {
Y_ASSERT(TotalIds_ == 3);
if (Id_ < 2) {
TGuard<TMutex> guard(Data_.mutex);
while (!AtomicGet(Data_.stopWaiting)) {
bool res = Data_.condVar1.WaitT(Data_.mutex, TDuration::Seconds(1));
FAIL_ASSERT(res == true);
}
} else {
usleep(100000);
AtomicSet(Data_.stopWaiting, true);
TGuard<TMutex> guard(Data_.mutex);
Data_.condVar1.Signal();
Data_.condVar1.Signal();
}
}
void RunBasicsWithPredicate() {
Y_ASSERT(TotalIds_ == 3);
if (Id_ < 2) {
TGuard<TMutex> guard(Data_.mutex);
const auto res = Data_.condVar1.WaitT(Data_.mutex, TDuration::Seconds(1), [&] {
return AtomicGet(Data_.stopWaiting);
});
FAIL_ASSERT(res == true);
} else {
usleep(100000);
AtomicSet(Data_.stopWaiting, true);
TGuard<TMutex> guard(Data_.mutex);
Data_.condVar1.Signal();
Data_.condVar1.Signal();
}
}
void RunSyncronize() {
for (size_t i = 0; i < 10; ++i) {
TGuard<TMutex> guard(Data_.mutex);
AtomicIncrement(Data_.in);
if (AtomicGet(Data_.in) == TotalIds_) {
AtomicSet(Data_.out, 0);
Data_.condVar1.BroadCast();
} else {
AtomicIncrement(Data_.waited);
while (AtomicGet(Data_.in) < TotalIds_) {
bool res = Data_.condVar1.WaitT(Data_.mutex, TDuration::Seconds(1));
FAIL_ASSERT(res == true);
}
}
AtomicIncrement(Data_.out);
if (AtomicGet(Data_.out) == TotalIds_) {
AtomicSet(Data_.in, 0);
Data_.condVar2.BroadCast();
} else {
while (AtomicGet(Data_.out) < TotalIds_) {
bool res = Data_.condVar2.WaitT(Data_.mutex, TDuration::Seconds(1));
FAIL_ASSERT(res == true);
}
}
}
FAIL_ASSERT(AtomicGet(Data_.waited) == (TotalIds_ - 1) * 10);
}
void RunSyncronizeWithPredicate() {
for (size_t i = 0; i < 10; ++i) {
TGuard<TMutex> guard(Data_.mutex);
AtomicIncrement(Data_.in);
if (AtomicGet(Data_.in) == TotalIds_) {
AtomicSet(Data_.out, 0);
Data_.condVar1.BroadCast();
} else {
AtomicIncrement(Data_.waited);
const auto res = Data_.condVar1.WaitT(Data_.mutex, TDuration::Seconds(1), [&] {
return AtomicGet(Data_.in) >= TotalIds_;
});
FAIL_ASSERT(res == true);
}
AtomicIncrement(Data_.out);
if (AtomicGet(Data_.out) == TotalIds_) {
AtomicSet(Data_.in, 0);
Data_.condVar2.BroadCast();
} else {
const auto res = Data_.condVar2.WaitT(Data_.mutex, TDuration::Seconds(1), [&] {
return AtomicGet(Data_.out) >= TotalIds_;
});
FAIL_ASSERT(res == true);
}
}
FAIL_ASSERT(Data_.waited == (TotalIds_ - 1) * 10);
}
#undef FAIL_ASSERT
private:
PFunc Func_;
size_t Id_;
TAtomicBase TotalIds_;
TSharedData& Data_;
};
private:
#define RUN_CYCLE(what, count) \
Q_.Start(count); \
for (size_t i = 0; i < count; ++i) { \
UNIT_ASSERT(Q_.Add(new TThreadTask(&TThreadTask::what, i, count, Data_))); \
} \
Q_.Stop(); \
bool b = Data_.failed; \
Data_.failed = false; \
UNIT_ASSERT(!b);
inline void TestBasics() {
RUN_CYCLE(RunBasics, 3);
}
inline void TestBasicsWithPredicate() {
RUN_CYCLE(RunBasicsWithPredicate, 3);
}
inline void TestSyncronize() {
RUN_CYCLE(RunSyncronize, 6);
}
inline void TestSyncronizeWithPredicate() {
RUN_CYCLE(RunSyncronizeWithPredicate, 6);
}
#undef RUN_CYCLE
TSharedData Data_;
TThreadPool Q_;
};
UNIT_TEST_SUITE_REGISTRATION(TCondVarTest);
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