public unsafe void Free(UvStreamHandle uvPipeHandle, UvStreamHandle sendHandle, Action <int, Exception, object> callBack, object state)
{
_callback = callBack;
_state = state;
try
{
_pins.Add(GCHandle.Alloc(this, GCHandleType.Normal));
LibUv.BufferStruct *ptr = (LibUv.BufferStruct *)((void *)_bufs);
*ptr = LibUv.CreateBufferStruct(_bufferPoint, 4);
LibUv.Write2(this, uvPipeHandle, ptr, 1, sendHandle, _Write_Callback);
}
catch
{
HandleFree(this);
sendHandle.Dispose();
_callback = null;
_state = null;
throw;
}
}
private unsafe void Write(UvStreamHandle uvStreamHandle, byte[] buffer1, int buffer1StartIndex, int buffer1Offset, byte[] buffer2, int buffer2StartIndex, int buffer2Offset, Action <int, Exception, object> callBack, object state)
{
if (buffer1 == null || buffer1Offset < 1 || buffer1.Length < buffer1Offset + buffer1StartIndex)
{
throw new ArgumentNullException("buffer1");
}
_callback = callBack;
_state = state;
try
{
_pins.Add(GCHandle.Alloc(this, GCHandleType.Normal));
LibUv.BufferStruct *ptr = (LibUv.BufferStruct *)((void *)_bufs);
int nbufs = 0;
GCHandle item = GCHandle.Alloc(buffer1, GCHandleType.Pinned);
_pins.Add(item);
//返回的是对象的“数据区”的起始地址
*ptr = LibUv.CreateBufferStruct(item.AddrOfPinnedObject() + buffer1StartIndex, buffer1Offset);
nbufs++;
if (buffer2 != null && buffer2Offset > 0)
{
if (buffer2.Length < buffer2Offset + buffer2StartIndex)
{
throw new ArgumentException("buffer2");
}
item = GCHandle.Alloc(buffer2, GCHandleType.Pinned);
_pins.Add(item);
ptr[1] = LibUv.CreateBufferStruct(item.AddrOfPinnedObject() + buffer2StartIndex, buffer2Offset);
nbufs++;
}
//int uv_write(uv_write_t* req, uv_stream_t* handle,uv_buf_t bufs[], int bufcnt, uv_write_cb cb);
LibUv.Write(this, uvStreamHandle, ptr, nbufs, _Write_Callback);
}
catch
{
HandleFree(this);
_callback = null;
_state = null;
throw;
}
}
