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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/vespalib/testkit/testapp.h>
#include <vespa/vespalib/util/rwlock.h>
using namespace vespalib;
class RWLockTest : public TestApp
{
public:
int Main() override;
static RWLockReader rbvReader(RWLock & lock) { RWLockReader r(lock); return r; }
static RWLockWriter rbvWriter(RWLock & lock) { RWLockWriter r(lock); return r; }
};
int
RWLockTest::Main()
{
TEST_INIT("rwlock_test");
RWLock lock;
EXPECT_TRUE(lock._givenLocks == 0);
{
EXPECT_TRUE(lock._givenLocks == 0);
RWLockReader r1(lock);
EXPECT_TRUE(lock._givenLocks == 1);
RWLockReader r2(lock);
EXPECT_TRUE(lock._givenLocks == 2);
RWLockReader r3(lock);
EXPECT_TRUE(lock._givenLocks == 3);
}
EXPECT_TRUE(lock._givenLocks == 0);
{
EXPECT_TRUE(lock._givenLocks == 0);
RWLockWriter w(lock);
EXPECT_TRUE(lock._givenLocks == -1);
}
EXPECT_TRUE(lock._givenLocks == 0);
{
RWLockReader rbv(rbvReader(lock));
EXPECT_TRUE(lock._givenLocks == 1);
RWLockReader copy(rbv);
EXPECT_TRUE(lock._givenLocks == 1);
RWLockReader copy2(copy);
EXPECT_TRUE(lock._givenLocks == 1);
}
EXPECT_TRUE(lock._givenLocks == 0);
{
RWLock lock2;
RWLockReader copy(rbvReader(lock));
EXPECT_TRUE(lock._givenLocks == 1);
RWLockReader copy2(rbvReader(lock2));
EXPECT_TRUE(lock._givenLocks == 1);
EXPECT_TRUE(lock2._givenLocks == 1);
RWLockReader rbv(rbvReader(lock));
EXPECT_TRUE(lock._givenLocks == 2);
copy=rbv;
EXPECT_TRUE(lock._givenLocks == 1);
copy2=copy;
EXPECT_TRUE(lock2._givenLocks == 0);
EXPECT_TRUE(lock._givenLocks == 1);
}
EXPECT_TRUE(lock._givenLocks == 0);
{
RWLockWriter rbv(rbvWriter(lock));
EXPECT_TRUE(lock._givenLocks == -1);
RWLockWriter copy(rbv);
EXPECT_TRUE(lock._givenLocks == -1);
RWLockWriter copy2(copy);
EXPECT_TRUE(lock._givenLocks == -1);
}
EXPECT_TRUE(lock._givenLocks == 0);
TEST_DONE();
}
TEST_APPHOOK(RWLockTest)
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