private WindowCache(WindowCacheConfig cfg)
{
tableSize = TableSize(cfg);
int lockCount = LockCount(cfg);
if (tableSize < 1)
{
throw new ArgumentException(JGitText.Get().tSizeMustBeGreaterOrEqual1);
}
if (lockCount < 1)
{
throw new ArgumentException(JGitText.Get().lockCountMustBeGreaterOrEqual1);
}
queue = new ReferenceQueue <ByteWindow>();
clock = new AtomicLong(1);
table = new AtomicReferenceArray <WindowCache.Entry>(tableSize);
locks = new WindowCache.Lock[lockCount];
for (int i = 0; i < locks.Length; i++)
{
locks[i] = new WindowCache.Lock();
}
evictLock = new ReentrantLock();
int eb = (int)(tableSize * .1);
if (64 < eb)
{
eb = 64;
}
else
{
if (eb < 4)
{
eb = 4;
}
}
if (tableSize < eb)
{
eb = tableSize;
}
evictBatch = eb;
maxFiles = cfg.GetPackedGitOpenFiles();
maxBytes = cfg.GetPackedGitLimit();
mmap = cfg.IsPackedGitMMAP();
windowSizeShift = Bits(cfg.GetPackedGitWindowSize());
windowSize = 1 << windowSizeShift;
openFiles = new AtomicInteger();
openBytes = new AtomicLong();
if (maxFiles < 1)
{
throw new ArgumentException(JGitText.Get().openFilesMustBeAtLeast1);
}
if (maxBytes < windowSize)
{
throw new ArgumentException(JGitText.Get().windowSizeMustBeLesserThanLimit);
}
}
private void CheckLimits(WindowCacheConfig cfg)
{
WindowCache cache = WindowCache.GetInstance();
NUnit.Framework.Assert.IsTrue(cache.GetOpenFiles() <= cfg.GetPackedGitOpenFiles()
);
NUnit.Framework.Assert.IsTrue(cache.GetOpenBytes() <= cfg.GetPackedGitLimit());
NUnit.Framework.Assert.IsTrue(0 < cache.GetOpenFiles());
NUnit.Framework.Assert.IsTrue(0 < cache.GetOpenBytes());
}
private static int TableSize(WindowCacheConfig cfg)
{
int wsz = cfg.GetPackedGitWindowSize();
long limit = cfg.GetPackedGitLimit();
if (wsz <= 0)
{
throw new ArgumentException(JGitText.Get().invalidWindowSize);
}
if (limit < wsz)
{
throw new ArgumentException(JGitText.Get().windowSizeMustBeLesserThanLimit);
}
return((int)Math.Min(5 * (limit / wsz) / 2, 2000000000));
}
private void CheckLimits(WindowCacheConfig cfg)
{
WindowCache cache = WindowCache.GetInstance();
NUnit.Framework.Assert.IsTrue(cache.GetOpenFiles() <= cfg.GetPackedGitOpenFiles()
);
NUnit.Framework.Assert.IsTrue(cache.GetOpenBytes() <= cfg.GetPackedGitLimit());
NUnit.Framework.Assert.IsTrue(0 < cache.GetOpenFiles());
NUnit.Framework.Assert.IsTrue(0 < cache.GetOpenBytes());
}