48 lines
1.8 KiB
C
48 lines
1.8 KiB
C
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/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <android/file_descriptor_jni.h>
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#include <stddef.h>
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#define LOG_TAG "file_descriptor_jni"
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#include "ALog-priv.h"
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#include "JniConstants.h"
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static void EnsureArgumentIsFileDescriptor(JNIEnv* env, jobject instance) {
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ALOG_ALWAYS_FATAL_IF(instance == NULL, "FileDescriptor is NULL");
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jclass jifd = JniConstants_FileDescriptorClass(env);
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ALOG_ALWAYS_FATAL_IF(!(*env)->IsInstanceOf(env, instance, jifd),
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"Argument is not a FileDescriptor");
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}
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JNIEXPORT _Nullable jobject AFileDescriptor_create(JNIEnv* env) {
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return (*env)->NewObject(env,
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JniConstants_FileDescriptorClass(env),
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JniConstants_FileDescriptor_init(env));
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}
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JNIEXPORT int AFileDescriptor_getFd(JNIEnv* env, jobject fileDescriptor) {
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EnsureArgumentIsFileDescriptor(env, fileDescriptor);
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return (*env)->GetIntField(env, fileDescriptor, JniConstants_FileDescriptor_descriptor(env));
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}
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JNIEXPORT void AFileDescriptor_setFd(JNIEnv* env, jobject fileDescriptor, int fd) {
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EnsureArgumentIsFileDescriptor(env, fileDescriptor);
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(*env)->SetIntField(env, fileDescriptor, JniConstants_FileDescriptor_descriptor(env), fd);
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}
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