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BizHawk
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snes-dont churn through memory so fast when loadstating/rewinding. i think its fragmenting the OS heap pretty badly because it kept reallocating shared memory blocks

This commit is contained in:
zeromus 2013-01-18 04:46:17 +00:00
parent fc66bbb594
commit 11aef10c2e
1 changed files with 33 additions and 8 deletions
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39
BizHawk.Emulation/Consoles/Nintendo/SNES/LibsnesApi.cs
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@ -543,6 +543,9 @@ namespace BizHawk.Emulation.Consoles.Nintendo.SNES
mmf.Dispose(); mmf.Dispose();
rbuf.Dispose(); rbuf.Dispose();
wbuf.Dispose(); wbuf.Dispose();
foreach (var smb in DeallocatedMemoryBlocks.Values)
smb.Dispose();
DeallocatedMemoryBlocks.Clear();
} }
public void BeginBufferIO() public void BeginBufferIO()
@ -894,14 +897,35 @@ namespace BizHawk.Emulation.Consoles.Nintendo.SNES
} }
case eMessage.eMessage_snes_allocSharedMemory: case eMessage.eMessage_snes_allocSharedMemory:
{ {
var smb = new SharedMemoryBlock(); var name = ReadPipeString();
smb.Name = ReadPipeString(); var size = brPipe.ReadInt32();
smb.Size = brPipe.ReadInt32();
if (SharedMemoryBlocks.ContainsKey(name))
{
throw new InvalidOperationException("Re-defined a shared memory block. Check bsnes init/shutdown code. Block name: " + name);
}
//try reusing existing block; dispose it if it exists and if the size doesnt match
SharedMemoryBlock smb = null;
if (DeallocatedMemoryBlocks.ContainsKey(name))
{
smb = DeallocatedMemoryBlocks[name];
DeallocatedMemoryBlocks.Remove(name);
if (smb.Size != size)
{
smb.Dispose();
smb = null;
}
}
//allocate a new block if we have to
if(smb == null)
{
smb = new SharedMemoryBlock();
smb.Name = name;
smb.Size = size;
smb.BlockName = InstanceName + smb.Name; smb.BlockName = InstanceName + smb.Name;
smb.Allocate(); smb.Allocate();
if (SharedMemoryBlocks.ContainsKey(smb.Name))
{
throw new InvalidOperationException("Re-defined a shared memory block. Check bsnes init/shutdown code. Block name: " + smb.Name);
} }
SharedMemoryBlocks[smb.Name] = smb; SharedMemoryBlocks[smb.Name] = smb;
@ -912,7 +936,7 @@ namespace BizHawk.Emulation.Consoles.Nintendo.SNES
{ {
string name = ReadPipeString(); string name = ReadPipeString();
var smb = SharedMemoryBlocks[name]; var smb = SharedMemoryBlocks[name];
smb.Dispose(); DeallocatedMemoryBlocks[name] = smb;
SharedMemoryBlocks.Remove(name); SharedMemoryBlocks.Remove(name);
break; break;
} }
@ -946,6 +970,7 @@ namespace BizHawk.Emulation.Consoles.Nintendo.SNES
} }
Dictionary<string, SharedMemoryBlock> SharedMemoryBlocks = new Dictionary<string, SharedMemoryBlock>(); Dictionary<string, SharedMemoryBlock> SharedMemoryBlocks = new Dictionary<string, SharedMemoryBlock>();
Dictionary<string, SharedMemoryBlock> DeallocatedMemoryBlocks = new Dictionary<string, SharedMemoryBlock>();
snes_video_refresh_t video_refresh; snes_video_refresh_t video_refresh;
snes_input_poll_t input_poll; snes_input_poll_t input_poll;