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// Copyright (c) 2021 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_IPC_PROCESS_H
#define BITCOIN_IPC_PROCESS_H
#include <util/fs.h>
#include <memory>
#include <string>
namespace ipc {
class Protocol;
//! IPC process interface for spawning bitcoin processes and serving requests
//! in processes that have been spawned.
//!
//! There will be different implementations of this interface depending on the
//! platform (e.g. unix, windows).
class Process
{
public:
virtual ~Process() = default;
//! Spawn process and return socket file descriptor for communicating with
//! it.
virtual int spawn(const std::string& new_exe_name, const fs::path& argv0_path, int& pid) = 0;
//! Wait for spawned process to exit and return its exit code.
virtual int waitSpawned(int pid) = 0;
//! Parse command line and determine if current process is a spawned child
//! process. If so, return true and a file descriptor for communicating
//! with the parent process.
virtual bool checkSpawned(int argc, char* argv[], int& fd) = 0;
//! Canonicalize and connect to address, returning socket descriptor.
virtual int connect(const fs::path& data_dir,
const std::string& dest_exe_name,
std::string& address) = 0;
//! Create listening socket, bind and canonicalize address, and return socket descriptor.
virtual int bind(const fs::path& data_dir,
const std::string& exe_name,
std::string& address) = 0;
};
//! Constructor for Process interface. Implementation will vary depending on
//! the platform (unix or windows).
std::unique_ptr<Process> MakeProcess();
} // namespace ipc
#endif // BITCOIN_IPC_PROCESS_H
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