From 21f3798c7938d070725816214368394e6a16bd04 Mon Sep 17 00:00:00 2001
From: Michal Cmarada <mcmarada@cisco.com>
Date: Wed, 23 Jan 2019 09:05:07 +0100
Subject: initial commit

 - migrates source code from VPP code base
 - modifies cmake configuration
 - adds cpack configuration for deb and rpm packaging
 - adds documentation


Change-Id: Ib6a39030f6c47c8ae654fcb886c618e159fb63b4
Signed-off-by: Michal Cmarada <mcmarada@cisco.com>
---
 java/jvpp-core/jvpp_core.c | 136 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 136 insertions(+)
 create mode 100644 java/jvpp-core/jvpp_core.c

(limited to 'java/jvpp-core/jvpp_core.c')

diff --git a/java/jvpp-core/jvpp_core.c b/java/jvpp-core/jvpp_core.c
new file mode 100644
index 0000000..2e62426
--- /dev/null
+++ b/java/jvpp-core/jvpp_core.c
@@ -0,0 +1,136 @@
+/*
+ * 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 <vnet/vnet.h>
+#include <jvpp-common/jvpp_common.h>
+#include <vpp/api/vpe_msg_enum.h>
+#define vl_typedefs             /* define message structures */
+#include <vpp/api/vpe_all_api_h.h>
+#undef vl_typedefs
+
+#include <vnet/api_errno.h>
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+#include <jni.h>
+#include <jvpp_core.h>
+
+
+// TODO: generate jvpp_plugin_name.c files (or at least reuse plugin's main structure)
+typedef struct {
+    /* Pointer to shared memory queue */
+    svm_queue_t * vl_input_queue;
+
+    /* VPP api client index */
+    u32 my_client_index;
+
+    /* Callback object and class references enabling asynchronous Java calls */
+    jobject callbackObject;
+    jclass callbackClass;
+
+} core_main_t;
+
+core_main_t core_main __attribute__((aligned (64)));
+
+#include "io_fd_vpp_jvpp_core_JVppCoreImpl.h"
+#include "jvpp_core_gen.h"
+
+JNIEXPORT void JNICALL Java_io_fd_vpp_jvpp_core_JVppCoreImpl_init0
+(JNIEnv * env, jclass clazz, jobject callback, jlong queue_address, jint my_client_index) {
+    core_main_t * plugin_main = &core_main;
+    plugin_main->my_client_index = my_client_index;
+    plugin_main->vl_input_queue = uword_to_pointer (queue_address, svm_queue_t *);
+
+    plugin_main->callbackObject = (*env)->NewGlobalRef(env, callback);
+    plugin_main->callbackClass = (jclass)(*env)->NewGlobalRef(env, (*env)->GetObjectClass(env, callback));
+
+    // verify API has not changed since jar generation (exit on mismatch)
+    #define _(N)             \
+        if (get_message_id(env, #N) == 0) return;
+        foreach_supported_api_message;
+    #undef _
+
+    #define _(N,n)                                  \
+        vl_msg_api_set_handlers(get_message_id(env, #N), #n,     \
+                vl_api_##n##_t_handler,             \
+                vl_noop_handler,                    \
+                vl_noop_handler,              \
+                vl_noop_handler,               \
+                sizeof(vl_api_##n##_t), 1);
+        foreach_api_reply_handler;
+    #undef _
+}
+
+JNIEXPORT void JNICALL Java_io_fd_vpp_jvpp_core_JVppCoreImpl_close0
+(JNIEnv *env, jclass clazz) {
+    core_main_t * plugin_main = &core_main;
+
+    // cleanup:
+    (*env)->DeleteGlobalRef(env, plugin_main->callbackClass);
+    (*env)->DeleteGlobalRef(env, plugin_main->callbackObject);
+
+    plugin_main->callbackClass = NULL;
+    plugin_main->callbackObject = NULL;
+}
+
+jint JNI_OnLoad(JavaVM *vm, void *reserved) {
+    JNIEnv* env;
+
+    if ((*vm)->GetEnv(vm, (void**) &env, JNI_VERSION_1_8) != JNI_OK) {
+        return JNI_EVERSION;
+    }
+
+    if (cache_class_references(env) != 0) {
+        clib_warning ("Failed to cache class references\n");
+        return JNI_ERR;
+    }
+
+    return JNI_VERSION_1_8;
+}
+
+void JNI_OnUnload(JavaVM *vm, void *reserved) {
+    JNIEnv* env;
+    if ((*vm)->GetEnv(vm, (void**) &env, JNI_VERSION_1_8) != JNI_OK) {
+        return;
+    }
+    delete_class_references(env);
+}
+
+
+static void _host_to_net_string(JNIEnv * env, jstring javaString, vl_api_string_t * vl_api_string)
+{
+    const char *nativeString;
+    // prevent null, which causes jni to crash
+    if (NULL != javaString) {
+        nativeString = (*env)->GetStringUTFChars(env, javaString, 0);
+    } else{
+        nativeString = "";
+    }
+
+    vl_api_to_api_string(jstr_length(env, javaString) + 1, nativeString, vl_api_string);
+
+    (*env)->ReleaseStringUTFChars(env, javaString, nativeString);
+}
+
+
+static jstring _net_to_host_string(JNIEnv * env, const vl_api_string_t * _net)
+{
+    return (*env)->NewStringUTF(env, (char *)_net->buf);
+}
+
+
+static size_t jstr_length(JNIEnv *env, jstring string)
+{
+    return ((int) (*env)->GetStringUTFLength(env, string));
+}
-- 
cgit 1.2.3-korg