diff options
Diffstat (limited to 'src/vpp-api/java/jvpp/gen/jvppgen/jvpp_c_gen.py')
| -rw-r--r-- | src/vpp-api/java/jvpp/gen/jvppgen/jvpp_c_gen.py | 389 |
1 files changed, 0 insertions, 389 deletions
diff --git a/src/vpp-api/java/jvpp/gen/jvppgen/jvpp_c_gen.py b/src/vpp-api/java/jvpp/gen/jvppgen/jvpp_c_gen.py deleted file mode 100644 index b97a9f95435..00000000000 --- a/src/vpp-api/java/jvpp/gen/jvppgen/jvpp_c_gen.py +++ /dev/null @@ -1,389 +0,0 @@ -#!/usr/bin/env python -# -# 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. -# - -import util -from string import Template - -import jni_gen - - -def is_manually_generated(f_name): - return f_name in {'control_ping_reply'} - - -class_reference_template = Template("""jclass ${ref_name}Class; -""") - -find_class_invocation_template = Template(""" - ${ref_name}Class = (jclass)(*env)->NewGlobalRef(env, (*env)->FindClass(env, "io/fd/vpp/jvpp/${plugin_name}/dto/${class_name}")); - if ((*env)->ExceptionCheck(env)) { - (*env)->ExceptionDescribe(env); - return JNI_ERR; - }""") - -find_class_template = Template(""" - ${ref_name}Class = (jclass)(*env)->NewGlobalRef(env, (*env)->FindClass(env, "${class_name}")); - if ((*env)->ExceptionCheck(env)) { - (*env)->ExceptionDescribe(env); - return JNI_ERR; - }""") - -delete_class_invocation_template = Template(""" - if (${ref_name}Class) { - (*env)->DeleteGlobalRef(env, ${ref_name}Class); - }""") - -class_cache_template = Template(""" -$class_references -static int cache_class_references(JNIEnv* env) { - $find_class_invocations - return 0; -} - -static void delete_class_references(JNIEnv* env) { - $delete_class_invocations -}""") - - -def generate_class_cache(func_list, plugin_name): - class_references = [] - find_class_invocations = [] - delete_class_invocations = [] - for f in func_list: - c_name = f['name'] - class_name = util.underscore_to_camelcase_upper(c_name) - ref_name = util.underscore_to_camelcase(c_name) - - if util.is_control_ping(class_name): - continue - - class_references.append(class_reference_template.substitute( - ref_name=ref_name)) - find_class_invocations.append(find_class_invocation_template.substitute( - plugin_name=plugin_name, - ref_name=ref_name, - class_name=class_name)) - delete_class_invocations.append(delete_class_invocation_template.substitute(ref_name=ref_name)) - - # add exception class to class cache - ref_name = 'callbackException' - class_name = 'io/fd/vpp/jvpp/VppCallbackException' - class_references.append(class_reference_template.substitute( - ref_name=ref_name)) - find_class_invocations.append(find_class_template.substitute( - ref_name=ref_name, - class_name=class_name)) - delete_class_invocations.append(delete_class_invocation_template.substitute(ref_name=ref_name)) - - return class_cache_template.substitute( - class_references="".join(class_references), find_class_invocations="".join(find_class_invocations), - delete_class_invocations="".join(delete_class_invocations)) - - -# TODO: cache method and field identifiers to achieve better performance -# https://jira.fd.io/browse/HONEYCOMB-42 -request_class_template = Template(""" - jclass requestClass = (*env)->FindClass(env, "io/fd/vpp/jvpp/${plugin_name}/dto/${java_name_upper}");""") - -request_field_identifier_template = Template(""" - jfieldID ${field_reference_name}FieldId = (*env)->GetFieldID(env, ${object_name}Class, "${field_name}", "${jni_signature}"); - ${jni_type} ${field_reference_name} = (*env)->Get${jni_getter}(env, ${object_name}, ${field_reference_name}FieldId); - """) - -jni_msg_size_template = Template(""" + ${array_length}*sizeof(${element_type})""") - -jni_impl_template = Template(""" -/** - * JNI binding for sending ${c_name} message. - * Generated based on $inputfile preparsed data: -$api_data - */ -JNIEXPORT jint JNICALL Java_io_fd_vpp_jvpp_${plugin_name}_JVpp${java_plugin_name}Impl_${field_name}0 -(JNIEnv * env, jclass clazz$args) { - ${plugin_name}_main_t *plugin_main = &${plugin_name}_main; - vl_api_${c_name}_t * mp; - u32 my_context_id = vppjni_get_context_id (&jvpp_main); - $request_class - - $jni_identifiers - - // create message: - mp = vl_msg_api_alloc(${msg_size}); - memset (mp, 0, ${msg_size}); - mp->_vl_msg_id = ntohs (get_message_id(env, "${c_name}_${crc}")); - mp->client_index = plugin_main->my_client_index; - mp->context = clib_host_to_net_u32 (my_context_id); - - $msg_initialization - - // send message: - if (CLIB_DEBUG > 1) - clib_warning ("Sending ${field_name} event message"); - vl_msg_api_send_shmem (plugin_main->vl_input_queue, (u8 *)&mp); - if ((*env)->ExceptionCheck(env)) { - return JNI_ERR; - } - return my_context_id; -}""") - - -def generate_jni_impl(func_list, plugin_name, inputfile): - jni_impl = [] - for f in func_list: - f_name = f['name'] - camel_case_function_name = util.underscore_to_camelcase(f_name) - if is_manually_generated(f_name): - # Skip control ping managed by jvpp registry. - continue - if not (util.is_dump(f_name) or util.is_request(f_name, func_list)): - continue - - # Generate jni bindings for sending dump and request messages. - arguments = '' - request_class = '' - jni_identifiers = '' - msg_initialization = '' - f_name_uppercase = f_name.upper() - msg_size = 'sizeof(*mp)' - - if f['args']: - arguments = ', jobject request' - camel_case_function_name_upper = util.underscore_to_camelcase_upper(f_name) - - request_class = request_class_template.substitute( - java_name_upper=camel_case_function_name_upper, - plugin_name=plugin_name) - - for t in zip(f['types'], f['args'], f['lengths'], f['arg_types']): - field_name = util.underscore_to_camelcase(t[1]) - is_variable_len_array = t[2][1] - if is_variable_len_array: - msg_size += jni_msg_size_template.substitute(array_length=util.underscore_to_camelcase(t[2][0]), - element_type=t[3]) - jni_identifiers += jni_gen.jni_request_identifiers_for_type(field_type=t[0], - field_reference_name=field_name, - field_name=field_name) - msg_initialization += jni_gen.jni_request_binding_for_type(field_type=t[0], c_name=t[1], - field_reference_name=field_name, - field_length=t[2][0], - is_variable_len_array=is_variable_len_array) - - jni_impl.append(jni_impl_template.substitute( - inputfile=inputfile, - api_data=util.api_message_to_javadoc(f), - field_reference_name=camel_case_function_name, - field_name=camel_case_function_name, - c_name_uppercase=f_name_uppercase, - c_name=f_name, - crc=f['crc'], - plugin_name=plugin_name, - java_plugin_name=plugin_name.title(), - request_class=request_class, - jni_identifiers=jni_identifiers, - msg_size=msg_size, - msg_initialization=msg_initialization, - args=arguments)) - - return "\n".join(jni_impl) - -# code fragment for checking result of the operation before sending request reply -callback_err_handler_template = Template(""" - // for negative result don't send callback message but send error callback - if (mp->retval<0) { - call_on_error("${handler_name}", mp->context, mp->retval, plugin_main->callbackClass, plugin_main->callbackObject, callbackExceptionClass); - return; - } - if (mp->retval == VNET_API_ERROR_IN_PROGRESS) { - clib_warning("Result in progress"); - return; - } -""") - -msg_handler_template = Template(""" -/** - * Handler for ${handler_name} message. - * Generated based on $inputfile preparsed data: -$api_data - */ -static void vl_api_${handler_name}_t_handler (vl_api_${handler_name}_t * mp) -{ - ${plugin_name}_main_t *plugin_main = &${plugin_name}_main; - JNIEnv *env = jvpp_main.jenv; - jthrowable exc; - $err_handler - - if (CLIB_DEBUG > 1) - clib_warning ("Received ${handler_name} event message"); - - jmethodID constructor = (*env)->GetMethodID(env, ${class_ref_name}Class, "<init>", "()V"); - - // User does not have to provide callbacks for all VPP messages. - // We are ignoring messages that are not supported by user. - (*env)->ExceptionClear(env); // just in case exception occurred in different place and was not properly cleared - jmethodID callbackMethod = (*env)->GetMethodID(env, plugin_main->callbackClass, "on${dto_name}", "(Lio/fd/vpp/jvpp/${plugin_name}/dto/${dto_name};)V"); - exc = (*env)->ExceptionOccurred(env); - if (exc) { - clib_warning("Unable to extract on${dto_name} method reference from ${plugin_name} plugin's callbackClass. Ignoring message.\\n"); - (*env)->ExceptionDescribe(env); - (*env)->ExceptionClear(env); - return; - } - - jobject dto = (*env)->NewObject(env, ${class_ref_name}Class, constructor); - $dto_setters - - (*env)->CallVoidMethod(env, plugin_main->callbackObject, callbackMethod, dto); - // free DTO as per http://stackoverflow.com/questions/1340938/memory-leak-when-calling-java-code-from-c-using-jni - (*env)->DeleteLocalRef(env, dto); -}""") - - -def generate_msg_handlers(func_list, plugin_name, inputfile): - handlers = [] - for f in func_list: - handler_name = f['name'] - dto_name = util.underscore_to_camelcase_upper(handler_name) - ref_name = util.underscore_to_camelcase(handler_name) - - if is_manually_generated(handler_name): - # Skip control ping managed by jvpp registry. - continue - if util.is_dump(handler_name) or util.is_request(handler_name, func_list): - continue - - # Generate msg handlers for all messages except for dumps and requests (handled by vpp, not client). - dto_setters = '' - err_handler = '' - # dto setters - for t in zip(f['types'], f['args'], f['lengths']): - c_name = t[1] - java_name = util.underscore_to_camelcase(c_name) - field_length = t[2][0] - is_variable_len_array = t[2][1] - length_field_type = None - if is_variable_len_array: - length_field_type = f['types'][f['args'].index(field_length)] - dto_setters += jni_gen.jni_reply_handler_for_type(handler_name=handler_name, ref_name=ref_name, - field_type=t[0], c_name=t[1], - field_reference_name=java_name, - field_name=java_name, field_length=field_length, - is_variable_len_array=is_variable_len_array, - length_field_type=length_field_type) - - # for retval don't generate setters and generate retval check - if util.is_retval_field(c_name): - err_handler = callback_err_handler_template.substitute( - handler_name=handler_name - ) - continue - - handlers.append(msg_handler_template.substitute( - inputfile=inputfile, - api_data=util.api_message_to_javadoc(f), - handler_name=handler_name, - plugin_name=plugin_name, - dto_name=dto_name, - class_ref_name=ref_name, - dto_setters=dto_setters, - err_handler=err_handler)) - - return "\n".join(handlers) - - -handler_registration_template = Template("""_(${name}_${crc}, ${name}) \\ -""") - - -def generate_handler_registration(func_list): - handler_registration = ["#define foreach_api_reply_handler \\\n"] - for f in func_list: - name = f['name'] - camelcase_name = util.underscore_to_camelcase(name) - - if util.is_control_ping(camelcase_name): - # Skip control ping managed by registry. - continue - if util.is_dump(name) or util.is_request(name, func_list): - continue - - # Generate msg handler registration for all messages except for dumps and requests. - handler_registration.append(handler_registration_template.substitute( - name=name, - crc=f['crc'])) - - return "".join(handler_registration) - - -api_verification_template = Template("""_(${name}_${crc}) \\ -""") - - -def generate_api_verification(func_list): - api_verification = ["#define foreach_supported_api_message \\\n"] - for f in func_list: - name = f['name'] - - api_verification.append(api_verification_template.substitute( - name=name, - crc=f['crc'])) - - return "".join(api_verification) - - -jvpp_c_template = Template("""/** - * This file contains JNI bindings for jvpp Java API. - * It was generated by jvpp_c_gen.py based on $inputfile - * (python representation of api file generated by vppapigen). - */ - -// JAVA class reference cache -$class_cache - -// List of supported API messages used for verification -$api_verification - -// JNI bindings -$jni_implementations - -// Message handlers -$msg_handlers - -// Registration of message handlers in vlib -$handler_registration -""") - - -def generate_jvpp(func_list, plugin_name, inputfile, path, logger): - """ Generates jvpp C file """ - logger.debug("Generating jvpp C for %s" % inputfile) - - class_cache = generate_class_cache(func_list, plugin_name) - jni_impl = generate_jni_impl(func_list, plugin_name, inputfile) - msg_handlers = generate_msg_handlers(func_list, plugin_name, inputfile) - handler_registration = generate_handler_registration(func_list) - api_verification = generate_api_verification(func_list) - - jvpp_c_file = open("%s/jvpp_%s_gen.h" % (path, plugin_name), 'w') - jvpp_c_file.write(jvpp_c_template.substitute( - inputfile=inputfile, - class_cache=class_cache, - api_verification=api_verification, - jni_implementations=jni_impl, - msg_handlers=msg_handlers, - handler_registration=handler_registration)) - jvpp_c_file.flush() - jvpp_c_file.close() - |