FD.io VPP  v17.04.2-2-ga8f93f8
Vector Packet Processing
jvpp_common.c
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1 /*
2  * Copyright (c) 2016 Cisco and/or its affiliates.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at:
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 #define _GNU_SOURCE /* for strcasestr(3) */
16 
17 #include "jvpp_common.h"
18 
19 #ifndef JVPP_DEBUG
20 #define JVPP_DEBUG 0
21 #endif
22 
23 #if JVPP_DEBUG == 1
24 #define DEBUG_LOG(...) clib_warning(__VA_ARGS__)
25 #else
26 #define DEBUG_LOG(...)
27 #endif
28 
29 /* shared jvpp main structure */
30 jvpp_main_t jvpp_main __attribute__((aligned (64)));
31 
32 void call_on_error(const char* callName, int contextId, int retval,
33  jclass callbackClass, jobject callbackObject,
34  jclass callbackExceptionClass) {
35  DEBUG_LOG("\nCallOnError : callback=%s, retval=%d, context=%d\n", callName,
36  clib_net_to_host_u32(retval), clib_net_to_host_u32(context));
37  JNIEnv *env = jvpp_main.jenv;
38  if (!callbackClass) {
39  DEBUG_LOG("CallOnError : jm->callbackClass is null!\n");
40  return;
41  }
42  jmethodID excConstructor = (*env)->GetMethodID(env, callbackExceptionClass,
43  "<init>", "(Ljava/lang/String;II)V");
44  if (!excConstructor) {
45  DEBUG_LOG("CallOnError : excConstructor is null!\n");
46  return;
47  }
48  jmethodID callbackExcMethod = (*env)->GetMethodID(env, callbackClass,
49  "onError", "(Lio/fd/vpp/jvpp/VppCallbackException;)V");
50  if (!callbackExcMethod) {
51  DEBUG_LOG("CallOnError : callbackExcMethod is null!\n");
52  return;
53  }
54 
55  jobject excObject = (*env)->NewObject(env, callbackExceptionClass,
56  excConstructor, (*env)->NewStringUTF(env, callName),
57  clib_net_to_host_u32(contextId), clib_net_to_host_u32(retval));
58  if (!excObject) {
59  DEBUG_LOG("CallOnError : excObject is null!\n");
60  return;
61  }
62 
63  (*env)->CallVoidMethod(env, callbackObject, callbackExcMethod, excObject);
64  DEBUG_LOG("CallOnError : Response sent\n");
65 }
66 
67 u32 get_message_id(JNIEnv *env, const char *key) {
69  if (!p) {
70  jclass exClass = (*env)->FindClass(env, "java/lang/IllegalStateException");
71  char *msgBuf = clib_mem_alloc(strlen(key) + 40);
72  strcpy(msgBuf, "API mismatch detected: ");
73  strcat(msgBuf, key);
74  strcat(msgBuf, " is missing");
75  DEBUG_LOG("get_message_id : %s\n", msgBuf);
76  (*env)->ThrowNew(env, exClass, msgBuf);
77  clib_mem_free(msgBuf);
78  return 0;
79  }
80  return (u32) p[0];
81 }
u32 get_message_id(JNIEnv *env, const char *key)
Retrieves message id based on message name and crc (key format: name_crc).
Definition: jvpp_common.c:67
#define hash_get(h, key)
Definition: hash.h:248
jvpp_main_t jvpp_main
Definition: jvpp_common.c:30
JNIEnv * jenv
Definition: jvpp_common.h:32
unsigned int u32
Definition: types.h:88
static void clib_mem_free(void *p)
Definition: mem.h:176
static void * clib_mem_alloc(uword size)
Definition: mem.h:109
u64 uword
Definition: types.h:112
uword * messages_hash
Definition: jvpp_common.h:40
void call_on_error(const char *callName, int contextId, int retval, jclass callbackClass, jobject callbackObject, jclass callbackExceptionClass)
Calls onError callback on callbackObject reference.
Definition: jvpp_common.c:32
#define DEBUG_LOG(...)
Definition: jvpp_common.c:26