chromium/third_party/xnnpack/src/src/init.c

// Copyright (c) Facebook, Inc. and its affiliates.
// All rights reserved.
//
// Copyright 2019 Google LLC
//
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree.

#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <string.h>

#ifdef _WIN32
  #include <windows.h>
#else
  #include <errno.h>
  #include <pthread.h>
  #include <sys/mman.h>
  #include <unistd.h>
#endif

#ifdef _MSC_VER
  #include <intrin.h>
#endif

#include "xnnpack.h"
#include "xnnpack/allocator.h"
#include "xnnpack/common.h"
#include "xnnpack/config.h"
#include "xnnpack/log.h"
#include "xnnpack/params.h"


#if XNN_PLATFORM_WINDOWS
  static INIT_ONCE init_guard = INIT_ONCE_STATIC_INIT;
#else
  static pthread_once_t init_guard = …;
#endif

static const struct xnn_allocator* volatile init_allocator = …;

static void init(void) { … }

#if XNN_PLATFORM_WINDOWS
  static BOOL CALLBACK init_windows(PINIT_ONCE init_once, PVOID parameter, PVOID* context) {
    init();
    return TRUE;
  }
#endif

enum xnn_status xnn_initialize(const struct xnn_allocator* allocator) { … }

enum xnn_status xnn_deinitialize(void) { … }