Peng Xu 5f88ac5cce Added implementation of shared memory NDK API
Implemeneted the following APIs:

*  int ASharedMemory_create(const char *name, size_t size);
*  size_t ASharedMemory_getSize(int fd);
*  int ASharedMemory_setProt(int fd, int prot);

Test: cts-tradefed run cts --module CtsSensorTestCases \
      --test android.hardware.cts.SensorNativeTest
Bug: 5995644, 30985702

Change-Id: I645b35e67293673efce9bb90f042ec0d3b83aa42
2017-02-24 02:42:51 -08:00

35 lines
1.0 KiB
C++

/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <android/sharedmem.h>
#include <cutils/ashmem.h>
#include <utils/Errors.h>
int ASharedMemory_create(const char *name, size_t size) {
if (size == 0) {
return android::BAD_VALUE;
}
return ashmem_create_region(name, size);
}
size_t ASharedMemory_getSize(int fd) {
return ashmem_valid(fd) ? ashmem_get_size_region(fd) : 0;
}
int ASharedMemory_setProt(int fd, int prot) {
return ashmem_set_prot_region(fd, prot);
}