1 /*
2 * Copyright (c) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include <cerrno>
17 #include <js_native_api.h>
18 #include <js_native_api_types.h>
19 #include <node_api.h>
20 #include <sys/mman.h>
21 #define ERROR 0
22 #define SUCCESS 1
23 #define PARAM_1 1
24
PosixMadvise(napi_env env, napi_callback_info info)25 static napi_value PosixMadvise(napi_env env, napi_callback_info info)
26 {
27 napi_value result = nullptr;
28 errno = ERROR;
29 size_t size = PARAM_1;
30 void *param = nullptr;
31 int returnValue = posix_madvise(param, size, PARAM_1);
32 if (errno == ERROR) {
33 returnValue = SUCCESS;
34 }
35 napi_create_int32(env, returnValue, &result);
36 return result;
37 }
38
Init(napi_env env, napi_value exports)39 EXTERN_C_START static napi_value Init(napi_env env, napi_value exports)
40 {
41 napi_property_descriptor desc[] = {
42 {"posixMadvise", nullptr, PosixMadvise, nullptr, nullptr, nullptr, napi_default, nullptr},
43 };
44 napi_define_properties(env, exports, sizeof(desc) / sizeof(desc[0]), desc);
45 return exports;
46 }
47 EXTERN_C_END
48
49 static napi_module demoModule = {
50 .nm_version = 1,
51 .nm_flags = 0,
52 .nm_filename = nullptr,
53 .nm_register_func = Init,
54 .nm_modname = "libsysmmanndk",
55 .nm_priv = ((void *)0),
56 .reserved = {0},
57 };
58
RegisterModule(void)59 extern "C" __attribute__((constructor)) void RegisterModule(void) { napi_module_register(&demoModule); }
60