diff options
Diffstat (limited to 'libtransport/src/core/io_module.cc')
-rw-r--r-- | libtransport/src/core/io_module.cc | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/libtransport/src/core/io_module.cc b/libtransport/src/core/io_module.cc new file mode 100644 index 000000000..fef0c1504 --- /dev/null +++ b/libtransport/src/core/io_module.cc @@ -0,0 +1,84 @@ +/* + * Copyright (c) 2021 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 <dlfcn.h> +#include <hicn/transport/core/io_module.h> +#include <hicn/transport/utils/log.h> + +#ifdef ANDROID +#include <io_modules/udp/hicn_forwarder_module.h> +#endif + +#include <deque> + +namespace transport { +namespace core { + +IoModule::~IoModule() {} + +IoModule *IoModule::load(const char *module_name) { +#ifdef ANDROID + return new HicnForwarderModule(); +#else + void *handle = 0; + IoModule *module = 0; + IoModule *(*creator)(void) = 0; + const char *error = 0; + + // open module + handle = dlopen(module_name, RTLD_NOW); + if (!handle) { + if ((error = dlerror()) != 0) { + TRANSPORT_LOGE("%s", error); + } + return 0; + } + + // link factory method + creator = (IoModule * (*)(void)) dlsym(handle, "create_module"); + if (!creator) { + if ((error = dlerror()) != 0) { + TRANSPORT_LOGE("%s", error); + return 0; + } + } + + // create object and return it + module = (*creator)(); + module->handle_ = handle; + + return module; +#endif +} + +bool IoModule::unload(IoModule *module) { + if (!module) { + return false; + } + +#ifdef ANDROID + delete module; +#else + // destroy object and close module + void *handle = module->handle_; + delete module; + dlclose(handle); +#endif + + return true; +} + +} // namespace core +} // namespace transport
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