samples/device/device_static_loader.c

// Static library loading in IREE.

#include "iree/hal/local/loaders/static_library_loader.h"
#include "iree/hal/local/sync_device.h"
#include "iree/modules/hal/module.h"
#include "samples/device/device.h"
#include "samples/util/model_api.h"

// A function to create the HAL device from the different backend targets.
// The HAL device is returned based on the implementation, and it must be
// released by the caller.
iree_status_t create_sample_device(iree_allocator_t host_allocator,
                                               iree_hal_device_t** out_device) {
  iree_status_t status = iree_ok_status();

  // Set paramters for the device created in the next step.
  iree_hal_sync_device_params_t params;
  iree_hal_sync_device_params_initialize(&params);

  // Load the statically embedded library
  const iree_hal_executable_library_query_fn_t libraries[] = {library_query()};

  iree_hal_executable_loader_t* library_loader = NULL;
  if (iree_status_is_ok(status)) {
    status = iree_hal_static_library_loader_create(
        IREE_ARRAYSIZE(libraries), libraries,
        iree_hal_executable_import_provider_null(), host_allocator,
        &library_loader);
  }

  // Use the default host allocator for buffer allocations.
  iree_string_view_t identifier = iree_make_cstring_view("sync");
  iree_hal_allocator_t* device_allocator = NULL;
  if (iree_status_is_ok(status)) {
    status = iree_hal_allocator_create_heap(identifier, host_allocator,
                                            host_allocator, &device_allocator);
  }

  // Create the device and release the executor and loader afterwards.
  if (iree_status_is_ok(status)) {
    status = iree_hal_sync_device_create(
        identifier, &params, /*loader_count=*/1, &library_loader,
        device_allocator, host_allocator, out_device);
  }

  iree_hal_allocator_release(device_allocator);
  iree_hal_executable_loader_release(library_loader);
  return status;
}