public void Test()
{
const int sleepSeconds = 1;
var log = new List <string>();
var innerRenderer = new AnonymousRenderer <DumbAction>()
{
BlockRenderer = (Block <DumbAction> oldTip, Block <DumbAction> newTip) =>
{
Thread.Sleep(sleepSeconds * 1000);
log.Add($"Block({oldTip.Index}, {newTip.Index})");
},
ReorgRenderer = (
Block <DumbAction> oldTip,
Block <DumbAction> newTip,
Block <DumbAction> branchpoint
) =>
{
Thread.Sleep(sleepSeconds * 1000);
log.Add($"Reorg({oldTip.Index}, {newTip.Index}, {branchpoint.Index})");
},
ReorgEndRenderer = (
Block <DumbAction> oldTip,
Block <DumbAction> newTip,
Block <DumbAction> branchpoint
) =>
{
Thread.Sleep(sleepSeconds * 1000);
log.Add($"ReorgEnd({oldTip.Index}, {newTip.Index}, {branchpoint.Index})");
},
};
using (var renderer = new NonblockRenderer <DumbAction>(
innerRenderer, 3, NonblockRenderer <DumbAction> .FullMode.DropNewest))
{
DateTimeOffset start = DateTimeOffset.UtcNow;
renderer.RenderReorg(_blockA, _blockB, _genesis);
Assert.Empty(log);
renderer.RenderBlock(_blockA, _blockB);
Assert.Empty(log);
renderer.RenderReorgEnd(_blockA, _blockB, _genesis);
Assert.Empty(log);
DateTimeOffset end = DateTimeOffset.UtcNow;
TimeSpan elapsed = end - start;
Assert.True(
elapsed < TimeSpan.FromSeconds(3 * sleepSeconds),
$"Elapsed more than {3 * sleepSeconds} seconds ({elapsed}); seems blocking."
);
}
Assert.Equal(
new[]
{
"Reorg(1, 1, 0)",
"Block(1, 1)",
"ReorgEnd(1, 1, 0)",
},
log
);
}
public void StatingWorkerThreadOnlyOnce(int parallel)
{
// This is a regression test for the follwing bug:
// https://github.com/planetarium/libplanet/issues/1772
var renderer = new NonblockRenderer <DumbAction>(
new AnonymousRenderer <DumbAction>(),
25,
NonblockRenderer <DumbAction> .FullMode.DropNewest
);
Thread[] threads = new Thread[parallel];
Exception[] errors = new Exception[threads.Length];
using (renderer)
{
for (int i = 0; i < threads.Length; i++)
{
// Declare a new variable for each iteration to avoid being captured by closure:
int threadNo = i;
threads[threadNo] = new Thread(() =>
{
try
{
renderer.RenderBlock(_blockA, _blockB);
}
catch (Exception e)
{
errors[threadNo] = e;
}
});
}
for (int i = 0; i < threads.Length; i++)
{
threads[i].Start();
}
for (int i = 0; i < threads.Length; i++)
{
threads[i].Join();
}
}
for (int i = 0; i < threads.Length; i++)
{
Assert.Null(errors[i]);
}
}