michael@0: /*
michael@0:  * Copyright (C) 2009 The Android Open Source Project
michael@0:  *
michael@0:  * Licensed under the Apache License, Version 2.0 (the "License");
michael@0:  * you may not use this file except in compliance with the License.
michael@0:  * You may obtain a copy of the License at
michael@0:  *
michael@0:  *      http://www.apache.org/licenses/LICENSE-2.0
michael@0:  *
michael@0:  * Unless required by applicable law or agreed to in writing, software
michael@0:  * distributed under the License is distributed on an "AS IS" BASIS,
michael@0:  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
michael@0:  * See the License for the specific language governing permissions and
michael@0:  * limitations under the License.
michael@0:  */
michael@0: 
michael@0: #ifndef NATIVE_HANDLE_H_
michael@0: #define NATIVE_HANDLE_H_
michael@0: 
michael@0: #ifdef __cplusplus
michael@0: extern "C" {
michael@0: #endif
michael@0: 
michael@0: typedef struct
michael@0: {
michael@0:     int version;        /* sizeof(native_handle_t) */
michael@0:     int numFds;         /* number of file-descriptors at &data[0] */
michael@0:     int numInts;        /* number of ints at &data[numFds] */
michael@0:     int data[0];        /* numFds + numInts ints */
michael@0: } native_handle_t;
michael@0: 
michael@0: 
michael@0: /* keep the old definition for backward source-compatibility */
michael@0: typedef native_handle_t native_handle;
michael@0: 
michael@0: /*
michael@0:  * native_handle_close
michael@0:  * 
michael@0:  * closes the file descriptors contained in this native_handle_t
michael@0:  * 
michael@0:  * return 0 on success, or a negative error code on failure
michael@0:  * 
michael@0:  */
michael@0: int native_handle_close(const native_handle_t* h);
michael@0: 
michael@0: 
michael@0: /*
michael@0:  * native_handle_create
michael@0:  * 
michael@0:  * creates a native_handle_t and initializes it. must be destroyed with
michael@0:  * native_handle_delete().
michael@0:  * 
michael@0:  */
michael@0: native_handle_t* native_handle_create(int numFds, int numInts);
michael@0: 
michael@0: /*
michael@0:  * native_handle_delete
michael@0:  * 
michael@0:  * frees a native_handle_t allocated with native_handle_create().
michael@0:  * This ONLY frees the memory allocated for the native_handle_t, but doesn't
michael@0:  * close the file descriptors; which can be achieved with native_handle_close().
michael@0:  * 
michael@0:  * return 0 on success, or a negative error code on failure
michael@0:  * 
michael@0:  */
michael@0: int native_handle_delete(native_handle_t* h);
michael@0: 
michael@0: 
michael@0: #ifdef __cplusplus
michael@0: }
michael@0: #endif
michael@0: 
michael@0: #endif /* NATIVE_HANDLE_H_ */