The base AcquisitionDevice no longer allocates or frees frame buffers;
buffer_device is now just a non-owning view of addresses. Each subclass
owns its backing memory and the matching lifecycle:
- PCIExpressDevice mmap's the kernel DMA buffers and munmap's them in its
own destructor (and on ctor failure), symmetric with MapKernelBuffer.
- HLSSimulatedDevice owns plain zeroed heap buffers it points
buffer_device into, declared before the HLSDevice so they outlive the
action thread that writes them. The buffers are page-aligned to match
the real device's kernel DMA buffers - the modelled AXI datamover and
FPGAIntegrationTest require aligned output buffers.
This drops the NUMA/mmap dance from the simulated path (not
performance-critical) - removing libnuma from acquisition_device - and
replaces the base-class cleanup that had to guess the allocation
strategy with a single clear owner per device.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
leonarski_f