R/Ryujinx.Memory.Tests/TrackingTests.cs
riperiperi 54ea2285f0
POWER - Performance Optimizations With Extensive Ramifications (#2286)
* Refactoring of KMemoryManager class

* Replace some trivial uses of DRAM address with VA

* Get rid of GetDramAddressFromVa

* Abstracting more operations on derived page table class

* Run auto-format on KPageTableBase

* Managed to make TryConvertVaToPa private, few uses remains now

* Implement guest physical pages ref counting, remove manual freeing

* Make DoMmuOperation private and call new abstract methods only from the base class

* Pass pages count rather than size on Map/UnmapMemory

* Change memory managers to take host pointers

* Fix a guest memory leak and simplify KPageTable

* Expose new methods for host range query and mapping

* Some refactoring of MapPagesFromClientProcess to allow proper page ref counting and mapping without KPageLists

* Remove more uses of AddVaRangeToPageList, now only one remains (shared memory page checking)

* Add a SharedMemoryStorage class, will be useful for host mapping

* Sayonara AddVaRangeToPageList, you served us well

* Start to implement host memory mapping (WIP)

* Support memory tracking through host exception handling

* Fix some access violations from HLE service guest memory access and CPU

* Fix memory tracking

* Fix mapping list bugs, including a race and a error adding mapping ranges

* Simple page table for memory tracking

* Simple "volatile" region handle mode

* Update UBOs directly (experimental, rough)

* Fix the overlap check

* Only set non-modified buffers as volatile

* Fix some memory tracking issues

* Fix possible race in MapBufferFromClientProcess (block list updates were not locked)

* Write uniform update to memory immediately, only defer the buffer set.

* Fix some memory tracking issues

* Pass correct pages count on shared memory unmap

* Armeilleure Signal Handler v1 + Unix changes

Unix currently behaves like windows, rather than remapping physical

* Actually check if the host platform is unix

* Fix decommit on linux.

* Implement windows 10 placeholder shared memory, fix a buffer issue.

* Make PTC version something that will never match with master

* Remove testing variable for block count

* Add reference count for memory manager, fix dispose

Can still deadlock with OpenAL

* Add address validation, use page table for mapped check, add docs

Might clean up the page table traversing routines.

* Implement batched mapping/tracking.

* Move documentation, fix tests.

* Cleanup uniform buffer update stuff.

* Remove unnecessary assignment.

* Add unsafe host mapped memory switch

On by default. Would be good to turn this off for untrusted code (homebrew, exefs mods) and give the user the option to turn it on manually, though that requires some UI work.

* Remove C# exception handlers

They have issues due to current .NET limitations, so the meilleure one fully replaces them for now.

* Fix MapPhysicalMemory on the software MemoryManager.

* Null check for GetHostAddress, docs

* Add configuration for setting memory manager mode (not in UI yet)

* Add config to UI

* Fix type mismatch on Unix signal handler code emit

* Fix 6GB DRAM mode.

The size can be greater than `uint.MaxValue` when the DRAM is >4GB.

* Address some feedback.

* More detailed error if backing memory cannot be mapped.

* SetLastError on all OS functions for consistency

* Force pages dirty with UBO update instead of setting them directly.

Seems to be much faster across a few games. Need retesting.

* Rebase, configuration rework, fix mem tracking regression

* Fix race in FreePages

* Set memory managers null after decrementing ref count

* Remove readonly keyword, as this is now modified.

* Use a local variable for the signal handler rather than a register.

* Fix bug with buffer resize, and index/uniform buffer binding.

Should fix flickering in games.

* Add InvalidAccessHandler to MemoryTracking

Doesn't do anything yet

* Call invalid access handler on unmapped read/write.

Same rules as the regular memory manager.

* Make unsafe mapped memory its own MemoryManagerType

* Move FlushUboDirty into UpdateState.

* Buffer dirty cache, rather than ubo cache

Much cleaner, may be reusable for Inline2Memory updates.

* This doesn't return anything anymore.

* Add sigaction remove methods, correct a few function signatures.

* Return empty list of physical regions for size 0.

* Also on AddressSpaceManager

Co-authored-by: gdkchan <gab.dark.100@gmail.com>
2021-05-24 22:52:44 +02:00

453 lines
16 KiB
C#

using NUnit.Framework;
using Ryujinx.Memory.Tracking;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Threading;
namespace Ryujinx.Memory.Tests
{
public class TrackingTests
{
private const int RndCnt = 3;
private const ulong MemorySize = 0x8000;
private const int PageSize = 4096;
private MemoryBlock _memoryBlock;
private MemoryTracking _tracking;
private MockVirtualMemoryManager _memoryManager;
[SetUp]
public void Setup()
{
_memoryBlock = new MemoryBlock(MemorySize);
_memoryManager = new MockVirtualMemoryManager(MemorySize, PageSize);
_tracking = new MemoryTracking(_memoryManager, PageSize);
}
[TearDown]
public void Teardown()
{
_memoryBlock.Dispose();
}
private bool TestSingleWrite(RegionHandle handle, ulong address, ulong size)
{
handle.Reprotect();
_tracking.VirtualMemoryEvent(address, size, true);
return handle.Dirty;
}
[Test]
public void SingleRegion()
{
RegionHandle handle = _tracking.BeginTracking(0, PageSize);
(ulong address, ulong size)? readTrackingTriggered = null;
handle.RegisterAction((address, size) =>
{
readTrackingTriggered = (address, size);
});
bool dirtyInitial = handle.Dirty;
Assert.True(dirtyInitial); // Handle starts dirty.
handle.Reprotect();
bool dirtyAfterReprotect = handle.Dirty;
Assert.False(dirtyAfterReprotect); // Handle is no longer dirty.
_tracking.VirtualMemoryEvent(PageSize * 2, 4, true);
_tracking.VirtualMemoryEvent(PageSize * 2, 4, false);
bool dirtyAfterUnrelatedReadWrite = handle.Dirty;
Assert.False(dirtyAfterUnrelatedReadWrite); // Not dirtied, as the write was to an unrelated address.
Assert.IsNull(readTrackingTriggered); // Hasn't been triggered yet
_tracking.VirtualMemoryEvent(0, 4, false);
bool dirtyAfterRelatedRead = handle.Dirty;
Assert.False(dirtyAfterRelatedRead); // Only triggers on write.
Assert.AreEqual(readTrackingTriggered, (0UL, 4UL)); // Read action was triggered.
readTrackingTriggered = null;
_tracking.VirtualMemoryEvent(0, 4, true);
bool dirtyAfterRelatedWrite = handle.Dirty;
Assert.True(dirtyAfterRelatedWrite); // Dirty flag should now be set.
_tracking.VirtualMemoryEvent(4, 4, true);
bool dirtyAfterRelatedWrite2 = handle.Dirty;
Assert.True(dirtyAfterRelatedWrite2); // Dirty flag should still be set.
handle.Reprotect();
bool dirtyAfterReprotect2 = handle.Dirty;
Assert.False(dirtyAfterReprotect2); // Handle is no longer dirty.
handle.Dispose();
bool dirtyAfterDispose = TestSingleWrite(handle, 0, 4);
Assert.False(dirtyAfterDispose); // Handle cannot be triggered when disposed
}
[Test]
public void OverlappingRegions()
{
RegionHandle allHandle = _tracking.BeginTracking(0, PageSize * 16);
allHandle.Reprotect();
(ulong address, ulong size)? readTrackingTriggeredAll = null;
Action registerReadAction = () =>
{
readTrackingTriggeredAll = null;
allHandle.RegisterAction((address, size) =>
{
readTrackingTriggeredAll = (address, size);
});
};
registerReadAction();
// Create 16 page sized handles contained within the allHandle.
RegionHandle[] containedHandles = new RegionHandle[16];
for (int i = 0; i < 16; i++)
{
containedHandles[i] = _tracking.BeginTracking((ulong)i * PageSize, PageSize);
containedHandles[i].Reprotect();
}
for (int i = 0; i < 16; i++)
{
// No handles are dirty.
Assert.False(allHandle.Dirty);
Assert.IsNull(readTrackingTriggeredAll);
for (int j = 0; j < 16; j++)
{
Assert.False(containedHandles[j].Dirty);
}
_tracking.VirtualMemoryEvent((ulong)i * PageSize, 1, true);
// Only the handle covering the entire range and the relevant contained handle are dirty.
Assert.True(allHandle.Dirty);
Assert.AreEqual(readTrackingTriggeredAll, ((ulong)i * PageSize, 1UL)); // Triggered read tracking
for (int j = 0; j < 16; j++)
{
if (j == i)
{
Assert.True(containedHandles[j].Dirty);
}
else
{
Assert.False(containedHandles[j].Dirty);
}
}
// Clear flags and reset read action.
registerReadAction();
allHandle.Reprotect();
containedHandles[i].Reprotect();
}
}
[Test]
public void PageAlignment(
[Values(1ul, 512ul, 2048ul, 4096ul, 65536ul)] [Random(1ul, 65536ul, RndCnt)] ulong address,
[Values(1ul, 4ul, 1024ul, 4096ul, 65536ul)] [Random(1ul, 65536ul, RndCnt)] ulong size)
{
ulong alignedStart = (address / PageSize) * PageSize;
ulong alignedEnd = ((address + size + PageSize - 1) / PageSize) * PageSize;
ulong alignedSize = alignedEnd - alignedStart;
RegionHandle handle = _tracking.BeginTracking(address, size);
// Anywhere inside the pages the region is contained on should trigger.
bool originalRangeTriggers = TestSingleWrite(handle, address, size);
Assert.True(originalRangeTriggers);
bool alignedRangeTriggers = TestSingleWrite(handle, alignedStart, alignedSize);
Assert.True(alignedRangeTriggers);
bool alignedStartTriggers = TestSingleWrite(handle, alignedStart, 1);
Assert.True(alignedStartTriggers);
bool alignedEndTriggers = TestSingleWrite(handle, alignedEnd - 1, 1);
Assert.True(alignedEndTriggers);
// Outside the tracked range should not trigger.
bool alignedBeforeTriggers = TestSingleWrite(handle, alignedStart - 1, 1);
Assert.False(alignedBeforeTriggers);
bool alignedAfterTriggers = TestSingleWrite(handle, alignedEnd, 1);
Assert.False(alignedAfterTriggers);
}
[Test, Timeout(1000)]
public void Multithreading()
{
// Multithreading sanity test
// Multiple threads can easily read/write memory regions from any existing handle.
// Handles can also be owned by different threads, though they should have one owner thread.
// Handles can be created and disposed at any time, by any thread.
// This test should not throw or deadlock due to invalid state.
const int threadCount = 1;
const int handlesPerThread = 16;
long finishedTime = 0;
RegionHandle[] handles = new RegionHandle[threadCount * handlesPerThread];
Random globalRand = new Random();
for (int i = 0; i < handles.Length; i++)
{
handles[i] = _tracking.BeginTracking((ulong)i * PageSize, PageSize);
handles[i].Reprotect();
}
List<Thread> testThreads = new List<Thread>();
// Dirty flag consumer threads
int dirtyFlagReprotects = 0;
for (int i = 0; i < threadCount; i++)
{
int randSeed = i;
testThreads.Add(new Thread(() =>
{
int handleBase = randSeed * handlesPerThread;
while (Stopwatch.GetTimestamp() < finishedTime)
{
Random random = new Random(randSeed);
RegionHandle handle = handles[handleBase + random.Next(handlesPerThread)];
if (handle.Dirty)
{
handle.Reprotect();
Interlocked.Increment(ref dirtyFlagReprotects);
}
}
}));
}
// Write trigger threads
int writeTriggers = 0;
for (int i = 0; i < threadCount; i++)
{
int randSeed = i;
testThreads.Add(new Thread(() =>
{
Random random = new Random(randSeed);
ulong handleBase = (ulong)(randSeed * handlesPerThread * PageSize);
while (Stopwatch.GetTimestamp() < finishedTime)
{
_tracking.VirtualMemoryEvent(handleBase + (ulong)random.Next(PageSize * handlesPerThread), PageSize / 2, true);
Interlocked.Increment(ref writeTriggers);
}
}));
}
// Handle create/delete threads
int handleLifecycles = 0;
for (int i = 0; i < threadCount; i++)
{
int randSeed = i;
testThreads.Add(new Thread(() =>
{
int maxAddress = threadCount * handlesPerThread * PageSize;
Random random = new Random(randSeed + 512);
while (Stopwatch.GetTimestamp() < finishedTime)
{
RegionHandle handle = _tracking.BeginTracking((ulong)random.Next(maxAddress), (ulong)random.Next(65536));
handle.Dispose();
Interlocked.Increment(ref handleLifecycles);
}
}));
}
finishedTime = Stopwatch.GetTimestamp() + Stopwatch.Frequency / 2; // Run for 500ms;
foreach (Thread thread in testThreads)
{
thread.Start();
}
foreach (Thread thread in testThreads)
{
thread.Join();
}
Assert.Greater(dirtyFlagReprotects, 10);
Assert.Greater(writeTriggers, 10);
Assert.Greater(handleLifecycles, 10);
}
[Test]
public void ReadActionThreadConsumption()
{
// Read actions should only be triggered once for each registration.
// The implementation should use an interlocked exchange to make sure other threads can't get the action.
RegionHandle handle = _tracking.BeginTracking(0, PageSize);
int triggeredCount = 0;
int registeredCount = 0;
int signalThreadsDone = 0;
bool isRegistered = false;
Action registerReadAction = () =>
{
registeredCount++;
handle.RegisterAction((address, size) =>
{
isRegistered = false;
Interlocked.Increment(ref triggeredCount);
});
};
const int threadCount = 16;
const int iterationCount = 10000;
Thread[] signalThreads = new Thread[threadCount];
for (int i = 0; i < threadCount; i++)
{
int randSeed = i;
signalThreads[i] = new Thread(() =>
{
Random random = new Random(randSeed);
for (int j = 0; j < iterationCount; j++)
{
_tracking.VirtualMemoryEvent((ulong)random.Next(PageSize), 4, false);
}
Interlocked.Increment(ref signalThreadsDone);
});
}
for (int i = 0; i < threadCount; i++)
{
signalThreads[i].Start();
}
while (signalThreadsDone != -1)
{
if (signalThreadsDone == threadCount)
{
signalThreadsDone = -1;
}
if (!isRegistered)
{
isRegistered = true;
registerReadAction();
}
}
// The action should trigger exactly once for every registration,
// then we register once after all the threads signalling it cease.
Assert.AreEqual(registeredCount, triggeredCount + 1);
}
[Test]
public void DisposeHandles()
{
// Ensure that disposed handles correctly remove their virtual and physical regions.
RegionHandle handle = _tracking.BeginTracking(0, PageSize);
handle.Reprotect();
Assert.AreEqual(1, _tracking.GetRegionCount());
handle.Dispose();
Assert.AreEqual(0, _tracking.GetRegionCount());
// Two handles, small entirely contains big.
// We expect there to be three regions after creating both, one for the small region and two covering the big one around it.
// Regions are always split to avoid overlapping, which is why there are three instead of two.
RegionHandle handleSmall = _tracking.BeginTracking(PageSize, PageSize);
RegionHandle handleBig = _tracking.BeginTracking(0, PageSize * 4);
Assert.AreEqual(3, _tracking.GetRegionCount());
// After disposing the big region, only the small one will remain.
handleBig.Dispose();
Assert.AreEqual(1, _tracking.GetRegionCount());
handleSmall.Dispose();
Assert.AreEqual(0, _tracking.GetRegionCount());
}
[Test]
public void ReadAndWriteProtection()
{
MemoryPermission protection = MemoryPermission.ReadAndWrite;
_memoryManager.OnProtect += (va, size, newProtection) =>
{
Assert.AreEqual((0, PageSize), (va, size)); // Should protect the exact region all the operations use.
protection = newProtection;
};
RegionHandle handle = _tracking.BeginTracking(0, PageSize);
// After creating the handle, there is no protection yet.
Assert.AreEqual(MemoryPermission.ReadAndWrite, protection);
bool dirtyInitial = handle.Dirty;
Assert.True(dirtyInitial); // Handle starts dirty.
handle.Reprotect();
// After a reprotect, there is write protection, which will set a dirty flag when any write happens.
Assert.AreEqual(MemoryPermission.Read, protection);
(ulong address, ulong size)? readTrackingTriggered = null;
handle.RegisterAction((address, size) =>
{
readTrackingTriggered = (address, size);
});
// Registering an action adds read/write protection.
Assert.AreEqual(MemoryPermission.None, protection);
bool dirtyAfterReprotect = handle.Dirty;
Assert.False(dirtyAfterReprotect); // Handle is no longer dirty.
// First we should read, which will trigger the action. This _should not_ remove write protection on the memory.
_tracking.VirtualMemoryEvent(0, 4, false);
bool dirtyAfterRead = handle.Dirty;
Assert.False(dirtyAfterRead); // Not dirtied, as this was a read.
Assert.AreEqual(readTrackingTriggered, (0UL, 4UL)); // Read action was triggered.
Assert.AreEqual(MemoryPermission.Read, protection); // Write protection is still present.
readTrackingTriggered = null;
// Now, perform a write.
_tracking.VirtualMemoryEvent(0, 4, true);
bool dirtyAfterWriteAfterRead = handle.Dirty;
Assert.True(dirtyAfterWriteAfterRead); // Should be dirty.
Assert.AreEqual(MemoryPermission.ReadAndWrite, protection); // All protection is now be removed from the memory.
Assert.IsNull(readTrackingTriggered); // Read tracking was removed when the action fired, as it can only fire once.
handle.Dispose();
}
}
}