1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
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));
}
|
