mirror of https://github.com/bitcoin/bitcoin.git
79 lines
2.5 KiB
C++
79 lines
2.5 KiB
C++
// Copyright (c) 2021-2022 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include <common/system.h>
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#include <interfaces/init.h>
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#include <interfaces/ipc.h>
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#include <ipc/capnp/protocol.h>
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#include <ipc/process.h>
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#include <ipc/protocol.h>
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#include <logging.h>
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#include <tinyformat.h>
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#include <util/fs.h>
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#include <cstdio>
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#include <cstdlib>
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#include <functional>
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#include <memory>
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#include <stdexcept>
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#include <string.h>
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#include <string>
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#include <unistd.h>
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#include <utility>
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#include <vector>
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namespace ipc {
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namespace {
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class IpcImpl : public interfaces::Ipc
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{
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public:
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IpcImpl(const char* exe_name, const char* process_argv0, interfaces::Init& init)
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: m_exe_name(exe_name), m_process_argv0(process_argv0), m_init(init),
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m_protocol(ipc::capnp::MakeCapnpProtocol()), m_process(ipc::MakeProcess())
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{
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}
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std::unique_ptr<interfaces::Init> spawnProcess(const char* new_exe_name) override
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{
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int pid;
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int fd = m_process->spawn(new_exe_name, m_process_argv0, pid);
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LogPrint(::BCLog::IPC, "Process %s pid %i launched\n", new_exe_name, pid);
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auto init = m_protocol->connect(fd, m_exe_name);
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Ipc::addCleanup(*init, [this, new_exe_name, pid] {
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int status = m_process->waitSpawned(pid);
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LogPrint(::BCLog::IPC, "Process %s pid %i exited with status %i\n", new_exe_name, pid, status);
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});
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return init;
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}
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bool startSpawnedProcess(int argc, char* argv[], int& exit_status) override
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{
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exit_status = EXIT_FAILURE;
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int32_t fd = -1;
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if (!m_process->checkSpawned(argc, argv, fd)) {
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return false;
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}
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m_protocol->serve(fd, m_exe_name, m_init);
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exit_status = EXIT_SUCCESS;
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return true;
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}
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void addCleanup(std::type_index type, void* iface, std::function<void()> cleanup) override
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{
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m_protocol->addCleanup(type, iface, std::move(cleanup));
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}
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Context& context() override { return m_protocol->context(); }
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const char* m_exe_name;
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const char* m_process_argv0;
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interfaces::Init& m_init;
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std::unique_ptr<Protocol> m_protocol;
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std::unique_ptr<Process> m_process;
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};
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} // namespace
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} // namespace ipc
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namespace interfaces {
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std::unique_ptr<Ipc> MakeIpc(const char* exe_name, const char* process_argv0, Init& init)
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{
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return std::make_unique<ipc::IpcImpl>(exe_name, process_argv0, init);
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}
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} // namespace interfaces
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