#include <cstring>
#include <string>
#include <unordered_map>

#include <libshm_windows/libshm.h>

void libshm_init(const char* manager_exec_path) {}

static void deleteTHManagedMapAllocator(void* ptr) {
  delete static_cast<THManagedMapAllocator*>(ptr);
}

at::DataPtr THManagedMapAllocator::makeDataPtr(
    const char* manager_handle,
    const char* filename,
    int flags,
    size_t size) {
  auto* context =
      new THManagedMapAllocator(manager_handle, filename, flags, size);
  return {context->data(), context, &deleteTHManagedMapAllocator, at::kCPU};
}

THManagedMapAllocator* THManagedMapAllocator::fromDataPtr(
    const at::DataPtr& dptr) {
  return dptr.cast_context<THManagedMapAllocator>(&deleteTHManagedMapAllocator);
}