/// <summary>
/// Creates a new private <see cref="MemoryBuffer"/> in a specified location in memory with a specified size.
/// </summary>
internal static PrivateMemoryBuffer CreatePrivateBuffer(Process process, nuint bufferAddress, int allocationSize, bool allocateMemory = true)
{
if (allocateMemory)
{
AllocateBuffer(process, bufferAddress, allocationSize);
}
var memorySource = GetMemorySource(process);
// Setup buffer after Magic.
var dataPtr = (UIntPtr)bufferAddress + PrivateBufferOverhead;
var realBufSize = allocationSize - PrivateBufferOverhead;
var memoryBufferProperties = new MemoryBufferProperties(dataPtr, realBufSize);
var buffer = new PrivateMemoryBuffer(memorySource, bufferAddress, memoryBufferProperties);
buffer.SetupMutex(process);
return(buffer);
}
/// <summary>
/// Creates a new buffer in a specified location in memory with a specified size.
/// </summary>
/// <param name="process">The process inside which the <see cref="MemoryBuffer"/> will be allocated.</param>
/// <param name="bufferAddress">Base address of the new buffer to be created. </param>
/// <param name="allocationSize">The amount of bytes allocated at bufferAddress</param>
/// <param name="allocateMemory">Set this to false if the allocationSize bytes have already been preallocated at bufferAddress.</param>
/// <remarks>
/// This constructor will override any existing buffer! Please use <see cref="MemoryBufferFactory.FromAddress"/> instead
/// if you wish to get a hold of an already existing buffer at the given bufferAddress.
/// </remarks>
internal static MemoryBuffer CreateBuffer(Process process, nuint bufferAddress, int allocationSize, bool allocateMemory = true)
{
if (allocateMemory)
{
AllocateBuffer(process, bufferAddress, allocationSize);
}
var memorySource = GetMemorySource(process);
// Write buffer "magic".
memorySource.Write(bufferAddress, ref _bufferMagic);
// Setup buffer after Magic.
var headerAddress = (UIntPtr)bufferAddress + sizeof(MemoryBufferMagic);
var dataPtr = (UIntPtr)bufferAddress + BufferOverhead;
var realBufSize = allocationSize - BufferOverhead;
var memoryBufferProperties = new MemoryBufferProperties(dataPtr, realBufSize);
var buffer = new MemoryBuffer(memorySource, headerAddress, memoryBufferProperties);
buffer.SetupMutex(process);
return(buffer);
}
