private static void WhackCache()
{
WindowCacheConfig config = new WindowCacheConfig();
config.SetPackedGitOpenFiles(1);
WindowCache.Reconfigure(config);
}
public override void TearDown()
{
base.TearDown();
WindowCacheConfig windowCacheConfig = new WindowCacheConfig();
WindowCache.Reconfigure(windowCacheConfig);
}
public override void SetUp()
{
WindowCacheConfig windowCacheConfig = new WindowCacheConfig();
windowCacheConfig.SetPackedGitOpenFiles(1);
WindowCache.Reconfigure(windowCacheConfig);
base.SetUp();
}
/// <summary>Close the resources utilized by this repository</summary>
public virtual void Close()
{
WindowCache.Purge(this);
lock (this)
{
loadedIdx = null;
reverseIdx = null;
}
}
public virtual void TestCache_TooFewFiles()
{
WindowCacheConfig cfg = new WindowCacheConfig();
cfg.SetPackedGitOpenFiles(2);
WindowCache.Reconfigure(cfg);
DoCacheTests();
CheckLimits(cfg);
}
public override void TearDown()
{
if (wc != null)
{
wc.Release();
}
WindowCache.Reconfigure(new WindowCacheConfig());
base.TearDown();
}
public virtual void TestCache_TooSmallLimit()
{
WindowCacheConfig cfg = new WindowCacheConfig();
cfg.SetPackedGitWindowSize(4096);
cfg.SetPackedGitLimit(4096);
WindowCache.Reconfigure(cfg);
DoCacheTests();
CheckLimits(cfg);
}
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());
}
public override void SetUp()
{
base.SetUp();
WindowCacheConfig cfg = new WindowCacheConfig();
cfg.SetStreamFileThreshold(streamThreshold);
WindowCache.Reconfigure(cfg);
repo = CreateBareRepository();
wc = (WindowCursor)repo.NewObjectReader();
}
/// <summary>Modify the configuration of the window cache.</summary>
/// <remarks>
/// Modify the configuration of the window cache.
/// <p>
/// The new configuration is applied immediately. If the new limits are
/// smaller than what what is currently cached, older entries will be purged
/// as soon as possible to allow the cache to meet the new limit.
/// </remarks>
/// <param name="cfg">the new window cache configuration.</param>
/// <exception cref="System.ArgumentException">
/// the cache configuration contains one or more invalid
/// settings, usually too low of a limit.
/// </exception>
public static void Reconfigure(WindowCacheConfig cfg)
{
NGit.Storage.File.WindowCache nc = new NGit.Storage.File.WindowCache(cfg);
NGit.Storage.File.WindowCache oc = cache;
if (oc != null)
{
oc.RemoveAll();
}
cache = nc;
streamFileThreshold = cfg.GetStreamFileThreshold();
DeltaBaseCache.Reconfigure(cfg);
}
public virtual void TestCache_Defaults()
{
WindowCacheConfig cfg = new WindowCacheConfig();
WindowCache.Reconfigure(cfg);
DoCacheTests();
CheckLimits(cfg);
WindowCache cache = WindowCache.GetInstance();
NUnit.Framework.Assert.AreEqual(6, cache.GetOpenFiles());
NUnit.Framework.Assert.AreEqual(17346, cache.GetOpenBytes());
}
public virtual void TestConfigureCache_PackedGitLimit_0()
{
try
{
WindowCacheConfig cfg = new WindowCacheConfig();
cfg.SetPackedGitLimit(0);
WindowCache.Reconfigure(cfg);
NUnit.Framework.Assert.Fail("incorrectly permitted PackedGitLimit = 0");
}
catch (ArgumentException)
{
}
}
public virtual void TestConfigureCache_Limits1()
{
// This test is just to force coverage over some lower bounds for
// the table. We don't want the table to wind up with too small
// of a size. This is highly dependent upon the table allocation
// algorithm actually implemented in WindowCache.
//
WindowCacheConfig cfg = new WindowCacheConfig();
cfg.SetPackedGitLimit(6 * 4096 / 5);
cfg.SetPackedGitWindowSize(4096);
WindowCache.Reconfigure(cfg);
}
public virtual void TestConfigureCache_PackedGitWindowSize_512()
{
try
{
WindowCacheConfig cfg = new WindowCacheConfig();
cfg.SetPackedGitWindowSize(512);
WindowCache.Reconfigure(cfg);
NUnit.Framework.Assert.Fail("incorrectly permitted PackedGitWindowSize = 512");
}
catch (ArgumentException e)
{
NUnit.Framework.Assert.AreEqual("Invalid window size", e.Message);
}
}
public virtual void TestConfigureCache_PackedGitOpenFiles_0()
{
try
{
WindowCacheConfig cfg = new WindowCacheConfig();
cfg.SetPackedGitOpenFiles(0);
WindowCache.Reconfigure(cfg);
NUnit.Framework.Assert.Fail("incorrectly permitted PackedGitOpenFiles = 0");
}
catch (ArgumentException e)
{
NUnit.Framework.Assert.AreEqual("Open files must be >= 1", e.Message);
}
}
public virtual void TestConfigureCache_PackedGitWindowSize_4097()
{
try
{
WindowCacheConfig cfg = new WindowCacheConfig();
cfg.SetPackedGitWindowSize(4097);
WindowCache.Reconfigure(cfg);
NUnit.Framework.Assert.Fail("incorrectly permitted PackedGitWindowSize = 4097");
}
catch (ArgumentException e)
{
NUnit.Framework.Assert.AreEqual("Window size must be power of 2", e.Message);
}
}
/// <exception cref="System.IO.IOException"></exception>
internal void Pin(PackFile pack, long position)
{
ByteWindow w = window;
if (w == null || !w.Contains(pack, position))
{
// If memory is low, we may need what is in our window field to
// be cleaned up by the GC during the get for the next window.
// So we always clear it, even though we are just going to set
// it again.
//
window = null;
window = WindowCache.Get(pack, position);
}
}
/// <exception cref="System.IO.IOException"></exception>
internal static ByteWindow Get(PackFile pack, long offset)
{
NGit.Storage.File.WindowCache c = cache;
ByteWindow r = c.GetOrLoad(pack, c.ToStart(offset));
if (c != cache)
{
// The cache was reconfigured while we were using the old one
// to load this window. The window is still valid, but our
// cache may think its still live. Ensure the window is removed
// from the old cache so resources can be released.
//
c.RemoveAll();
}
return(r);
}
public virtual void TestConfigureCache_PackedGitWindowSizeAbovePackedGitLimit()
{
try
{
WindowCacheConfig cfg = new WindowCacheConfig();
cfg.SetPackedGitLimit(1024);
cfg.SetPackedGitWindowSize(8192);
WindowCache.Reconfigure(cfg);
NUnit.Framework.Assert.Fail("incorrectly permitted PackedGitWindowSize > PackedGitLimit"
);
}
catch (ArgumentException e)
{
NUnit.Framework.Assert.AreEqual("Window size must be < limit", e.Message);
}
}
internal int GetStreamFileThreshold()
{
return(WindowCache.GetStreamFileThreshold());
}
