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//===-- tsan_clock_test.cc ------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file is a part of ThreadSanitizer (TSan), a race detector.
//
//===----------------------------------------------------------------------===//
#include "tsan_clock.h"
#include "tsan_rtl.h"
#include "gtest/gtest.h"
namespace __tsan {
TEST(Clock, VectorBasic) {
ScopedInRtl in_rtl;
ThreadClock clk;
CHECK_EQ(clk.size(), 0);
clk.tick(0);
CHECK_EQ(clk.size(), 1);
CHECK_EQ(clk.get(0), 1);
clk.tick(3);
CHECK_EQ(clk.size(), 4);
CHECK_EQ(clk.get(0), 1);
CHECK_EQ(clk.get(1), 0);
CHECK_EQ(clk.get(2), 0);
CHECK_EQ(clk.get(3), 1);
clk.tick(3);
CHECK_EQ(clk.get(3), 2);
}
TEST(Clock, ChunkedBasic) {
ScopedInRtl in_rtl;
ThreadClock vector;
SyncClock chunked;
CHECK_EQ(vector.size(), 0);
CHECK_EQ(chunked.size(), 0);
vector.acquire(&chunked);
CHECK_EQ(vector.size(), 0);
CHECK_EQ(chunked.size(), 0);
vector.release(&chunked);
CHECK_EQ(vector.size(), 0);
CHECK_EQ(chunked.size(), 0);
vector.acq_rel(&chunked);
CHECK_EQ(vector.size(), 0);
CHECK_EQ(chunked.size(), 0);
}
TEST(Clock, AcquireRelease) {
ScopedInRtl in_rtl;
ThreadClock vector1;
vector1.tick(100);
SyncClock chunked;
vector1.release(&chunked);
CHECK_EQ(chunked.size(), 101);
ThreadClock vector2;
vector2.acquire(&chunked);
CHECK_EQ(vector2.size(), 101);
CHECK_EQ(vector2.get(0), 0);
CHECK_EQ(vector2.get(1), 0);
CHECK_EQ(vector2.get(99), 0);
CHECK_EQ(vector2.get(100), 1);
}
TEST(Clock, ManyThreads) {
ScopedInRtl in_rtl;
SyncClock chunked;
for (int i = 0; i < 100; i++) {
ThreadClock vector;
vector.tick(i);
vector.release(&chunked);
CHECK_EQ(chunked.size(), i + 1);
vector.acquire(&chunked);
CHECK_EQ(vector.size(), i + 1);
}
ThreadClock vector;
vector.acquire(&chunked);
CHECK_EQ(vector.size(), 100);
for (int i = 0; i < 100; i++)
CHECK_EQ(vector.get(i), 1);
}
TEST(Clock, DifferentSizes) {
ScopedInRtl in_rtl;
{
ThreadClock vector1;
vector1.tick(10);
ThreadClock vector2;
vector2.tick(20);
{
SyncClock chunked;
vector1.release(&chunked);
CHECK_EQ(chunked.size(), 11);
vector2.release(&chunked);
CHECK_EQ(chunked.size(), 21);
}
{
SyncClock chunked;
vector2.release(&chunked);
CHECK_EQ(chunked.size(), 21);
vector1.release(&chunked);
CHECK_EQ(chunked.size(), 21);
}
{
SyncClock chunked;
vector1.release(&chunked);
vector2.acquire(&chunked);
CHECK_EQ(vector2.size(), 21);
}
{
SyncClock chunked;
vector2.release(&chunked);
vector1.acquire(&chunked);
CHECK_EQ(vector1.size(), 21);
}
}
}
} // namespace __tsan
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