public PortMessage ReplyWaitReceive(PortMessage message)
{
NtStatus status;
IntPtr context;
using (var buffer = PortMessage.AllocateBuffer())
{
MemoryAlloc messageMemory = null;
if (message != null)
{
messageMemory = message.ToMemory();
}
try
{
if ((status = Win32.NtReplyWaitReceivePort(
this,
out context,
messageMemory ?? IntPtr.Zero,
buffer
)) >= NtStatus.Error)
{
Win32.ThrowLastError(status);
}
if (message != null)
{
message.SetHeader(messageMemory);
}
}
finally
{
if (messageMemory != null)
{
messageMemory.Dispose();
}
}
return(new PortMessage(buffer));
}
}
public PortMessage ReplyWaitReceive(PortMessage message)
{
using (MemoryAlloc buffer = PortMessage.AllocateBuffer())
{
MemoryAlloc messageMemory = null;
if (message != null)
{
messageMemory = message.ToMemory();
}
try
{
IntPtr context;
Win32.NtReplyWaitReceivePort(
this,
out context,
messageMemory ?? IntPtr.Zero,
buffer
).ThrowIf();
if (message != null)
{
message.SetHeader(messageMemory);
}
}
finally
{
if (messageMemory != null)
{
messageMemory.Dispose();
}
}
return(new PortMessage(buffer));
}
}
private MemoryAlloc GetPropertiesInformation()
{
NtStatus status;
int retLength;
var data = new MemoryAlloc(0x1000);
status = Win32.NtQueryInformationTransaction(
this,
TransactionInformationClass.TransactionPropertiesInformation,
data,
data.Size,
out retLength
);
if (status == NtStatus.BufferTooSmall)
{
// Resize the buffer and try again.
data.Resize(retLength);
status = Win32.NtQueryInformationTransaction(
this,
TransactionInformationClass.TransactionPropertiesInformation,
data,
data.Size,
out retLength
);
}
if (status >= NtStatus.Error)
{
data.Dispose();
Win32.ThrowLastError(status);
}
return(data);
}
private MemoryAlloc GetBasicInformation()
{
NtStatus status;
int retLength;
var data = new MemoryAlloc(0x1000);
status = Win32.NtQueryInformationResourceManager(
this,
ResourceManagerInformationClass.ResourceManagerBasicInformation,
data,
data.Size,
out retLength
);
if (status == NtStatus.BufferTooSmall)
{
// Resize the buffer and try again.
data.Resize(retLength);
status = Win32.NtQueryInformationResourceManager(
this,
ResourceManagerInformationClass.ResourceManagerBasicInformation,
data,
data.Size,
out retLength
);
}
if (status >= NtStatus.Error)
{
data.Dispose();
Win32.ThrowLastError(status);
}
return(data);
}
protected override void Close()
{
_buffer.Dispose();
base.Close();
}