/* * Copyright (c) 2016 Cisco and/or its affiliates. * 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 #include "vppjni_env.h" // Head of the class registration list. static vppjni_class_t *class_head; // Head of the class registration list. static vppjni_field_t *field_head; void vppjni_register_class(vppjni_class_t *ptr) { vppjni_class_t **where = &class_head; while (*where != NULL) { where = &((*where)->next); } *where = ptr; } void vppjni_register_field(vppjni_field_t *ptr) { vppjni_field_t **where = &field_head; while (*where != NULL) { where = &((*where)->next); } *where = ptr; } jobject vppjni_new_object(JNIEnv *env, const vppjni_class_t *ptr, va_list ap) { jobject obj = (*env)->NewObjectV(env, ptr->jclass, ptr->jinit, ap); if ((*env)->ExceptionCheck(env)) { (*env)->ExceptionDescribe(env); return NULL; } return obj; } int vppjni_init(JNIEnv *env) { vppjni_class_t *cwlk; vppjni_field_t *fwlk; for (cwlk = class_head; cwlk != NULL; cwlk = cwlk->next) { jclass cls; jmethodID method; cls = (*env)->FindClass(env, cwlk->fqcn); if ((*env)->ExceptionCheck(env)) { (*env)->ExceptionDescribe(env); vppjni_uninit(env); return JNI_ERR; } method = (*env)->GetMethodID(env, cls, "", cwlk->init_sig); if ((*env)->ExceptionCheck(env)) { (*env)->ExceptionDescribe(env); vppjni_uninit(env); return JNI_ERR; } cwlk->jclass = (*env)->NewGlobalRef(env, cls); if (cwlk->jclass == NULL) { vppjni_uninit(env); return JNI_ERR; } cwlk->jinit = method; } for (fwlk = field_head; fwlk != NULL; fwlk = fwlk->next) { fwlk->jfield = (*env)->GetFieldID(env, fwlk->clsref->jclass, fwlk->name, fwlk->type); if ((*env)->ExceptionCheck(env)) { (*env)->ExceptionDescribe(env); vppjni_uninit(env); return JNI_ERR; } } return 0; } void vppjni_uninit(JNIEnv *env) { vppjni_class_t *cwlk; vppjni_field_t *fwlk; for (fwlk = field_head; fwlk != NULL; fwlk = fwlk->next) { fwlk->jfield = NULL; } for (cwlk = class_head; cwlk != NULL; cwlk = cwlk->next) { if (cwlk->jclass != NULL ) { (*env)->DeleteGlobalRef(env, cwlk->jclass); } cwlk->jclass = NULL; cwlk->jinit = NULL; } }