mirror of https://github.com/oxen-io/lokinet
make an application context to simplify the main function
parent
956973cb84
commit
4a3a0fc556
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#ifndef LLARP_HPP
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#define LLARP_HPP
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#include <llarp.h>
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#include <iostream>
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#include <string>
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#include <thread>
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#include <vector>
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namespace llarp
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{
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struct Context
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{
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Context(std::ostream &stdout);
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~Context();
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int num_nethreads = 1;
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std::vector< std::thread > netio_threads;
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llarp_alloc mem;
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llarp_crypto crypto;
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llarp_router *router = nullptr;
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llarp_threadpool *worker = nullptr;
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llarp_logic *logic = nullptr;
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llarp_config *config = nullptr;
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llarp_nodedb *nodedb = nullptr;
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llarp_ev_loop *mainloop = nullptr;
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char nodedb_dir[256] = {0};
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bool
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LoadConfig(const std::string &fname);
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void
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Close();
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int
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Run();
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void
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HandleSignal(int sig);
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private:
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void
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SigINT();
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bool
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ReloadConfig();
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static void
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iter_config(llarp_config_iterator *itr, const char *section,
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const char *key, const char *val);
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void
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progress();
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std::string configfile;
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std::ostream &out;
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};
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}
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#endif
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@ -0,0 +1,203 @@
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#include <signal.h>
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#include <llarp.hpp>
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#include "logger.hpp"
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namespace llarp
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{
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Context::Context(std::ostream &stdout) : out(stdout)
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{
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}
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Context::~Context()
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{
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}
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void
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Context::progress()
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{
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out << "." << std::flush;
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}
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bool
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Context::ReloadConfig()
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{
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llarp::Info(__FILE__, LLARP_VERSION, " loading config at ", configfile);
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if(!llarp_load_config(config, configfile.c_str()))
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{
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llarp_config_iterator iter;
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iter.user = this;
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iter.visit = &iter_config;
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llarp_config_iter(config, &iter);
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return true;
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}
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return false;
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}
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void
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Context::iter_config(llarp_config_iterator *itr, const char *section,
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const char *key, const char *val)
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{
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Context *ctx = static_cast< Context * >(itr->user);
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if(!strcmp(section, "router"))
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{
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if(!strcmp(key, "worker-threads"))
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{
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int workers = atoi(val);
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if(workers > 0 && ctx->worker == nullptr)
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{
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ctx->worker = llarp_init_threadpool(workers, "llarp-worker");
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}
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}
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if(!strcmp(key, "net-threads"))
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{
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ctx->num_nethreads = atoi(val);
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if(ctx->num_nethreads <= 0)
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ctx->num_nethreads = 1;
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}
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}
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if(!strcmp(section, "netdb"))
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{
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if(!strcmp(key, "dir"))
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{
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strncpy(ctx->nodedb_dir, val, sizeof(ctx->nodedb_dir));
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}
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}
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}
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int
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Context::Run()
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{
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llarp_mem_stdlib(&mem);
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llarp_ev_loop_alloc(&mainloop);
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llarp_crypto_libsodium_init(&crypto);
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nodedb = llarp_nodedb_new(&mem, &crypto);
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if(nodedb_dir[0])
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{
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nodedb_dir[sizeof(nodedb_dir) - 1] = 0;
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if(llarp_nodedb_ensure_dir(nodedb_dir))
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{
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// ensure worker thread pool
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if(!worker)
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worker = llarp_init_threadpool(2, "llarp-worker");
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// ensure netio thread
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logic = llarp_init_logic(&mem);
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router = llarp_init_router(&mem, worker, mainloop, logic);
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if(llarp_configure_router(router, config))
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{
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llarp_run_router(router);
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// run net io thread
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auto netio = mainloop;
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while(num_nethreads--)
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{
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netio_threads.emplace_back([netio]() { llarp_ev_loop_run(netio); });
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pthread_setname_np(netio_threads.back().native_handle(),
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"llarp-netio");
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}
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llarp::Info(__FILE__, "running");
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llarp_logic_mainloop(logic);
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return 0;
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}
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else
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llarp::Error(__FILE__, "failed to start router");
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}
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else
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llarp::Error(__FILE__, "Failed to initialize nodedb");
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}
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else
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llarp::Error(__FILE__, "no nodedb defined");
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return 1;
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}
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void
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Context::HandleSignal(int sig)
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{
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if(sig == SIGINT)
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{
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llarp::Info(__FILE__, "SIGINT");
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SigINT();
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}
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if(sig == SIGHUP)
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{
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llarp::Info(__FILE__, "SIGHUP");
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ReloadConfig();
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}
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}
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void
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Context::SigINT()
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{
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if(logic)
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llarp_logic_stop(logic);
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if(mainloop)
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llarp_ev_loop_stop(mainloop);
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for(auto &t : netio_threads)
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{
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t.join();
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}
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netio_threads.clear();
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}
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void
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Context::Close()
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{
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progress();
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if(mainloop)
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llarp_ev_loop_stop(mainloop);
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progress();
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if(worker)
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llarp_threadpool_stop(worker);
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progress();
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if(worker)
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llarp_threadpool_join(worker);
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progress();
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if(logic)
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llarp_logic_stop(logic);
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progress();
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if(router)
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llarp_stop_router(router);
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progress();
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llarp_free_router(&router);
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progress();
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llarp_free_config(&config);
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progress();
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llarp_ev_loop_free(&mainloop);
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progress();
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llarp_free_threadpool(&worker);
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progress();
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llarp_free_logic(&logic);
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progress();
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llarp_nodedb_free(&nodedb);
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for(auto &t : netio_threads)
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{
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progress();
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t.join();
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}
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progress();
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netio_threads.clear();
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out << std::endl << "done" << std::endl;
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}
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bool
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Context::LoadConfig(const std::string &fname)
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{
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llarp_new_config(&config);
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configfile = fname;
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return ReloadConfig();
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}
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}
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