public static DbItemReference CreateNew(byte[] body, int transactionNumber, IMemoryManager memoryManager)
{
if (body == null)
{
throw new ArgumentNullException(nameof(body));
}
if (memoryManager == null)
{
throw new ArgumentNullException(nameof(memoryManager));
}
var bodyReference = memoryManager.Allocate(body);
var versionInfo = new VersionInfo
{
CreateChangeNumber = transactionNumber,
ExpireChangeNumber = -1,
VersionReference = bodyReference
};
byte[] versionInfoBytes;
using (var ms = new MemoryStream(VersionInfo.BytesLength))
{
versionInfo.Write(ms);
versionInfoBytes = ms.ToArray();
}
return(memoryManager.Allocate(versionInfoBytes));
}
public DbItemReference AllocateNew()
{
byte[] versionInfoBytes;
using (var ms = new MemoryStream(VersionInfo.BytesLength * _versions.Count))
{
foreach (var v in _versions)
{
v.Write(ms);
}
versionInfoBytes = ms.ToArray();
}
return(_memoryManager.Allocate(versionInfoBytes));
}
/// <summary>
/// Allocates a new value and produces reference to it.
/// </summary>
/// <param name="value">Value to allocate</param>
/// <returns>Reference to allocated value</returns>
public DbItemReference AllocateNew(TValue value)
{
var valueBytes = _valueSerializer.Serialize(value);
return(IsVersioningEnabled
? VersionedRecord.CreateNew(valueBytes, DataTankerTransaction.Current.Id, _memoryManager)
: _memoryManager.Allocate(valueBytes));
}
private IntPtr ExecuteFuntion(string module, string function, byte[] arguments, bool canWait = true)
{
SafeWaitHandle remoteThread = null;
var argumentsAllocation =
_memoryManager.Allocate(
arguments.Length,
MemoryProtectionType.ReadWrite, !canWait);
if (argumentsAllocation.Address == IntPtr.Zero)
{
throw new Win32Exception("Failed to allocate memory in remote process.");
}
try
{
var processHandle = _process.SafeHandle;
// Write the arguments buffer to our allocated address
_memoryManager.WriteMemory(argumentsAllocation.Address.ToInt64(), arguments);
// Execute the function call in a new thread
remoteThread = ThreadHelper.CreateRemoteThread(processHandle,
ThreadHelper.GetProcAddress(processHandle, module, function),
argumentsAllocation.Address);
if (canWait)
{
Interop.Kernel32.WaitForSingleObject(
remoteThread,
System.Threading.Timeout.Infinite);
}
return(argumentsAllocation.Address);
}
finally
{
remoteThread?.Dispose();
if (canWait)
{
_memoryManager.Deallocate(argumentsAllocation);
}
}
}
