mirror of
https://github.com/bitcoin/bitcoin.git
synced 2025-01-28 12:07:32 -03:00
3e33d170cc
These are currently empty structs but they will be used to pass some function and object pointers from bitcoin application code to IPC hooks that run, for example, when a remote object is created or destroyed, or a new process is created.
78 lines
2.5 KiB
C++
78 lines
2.5 KiB
C++
// 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.
|
|
|
|
#include <fs.h>
|
|
#include <interfaces/init.h>
|
|
#include <interfaces/ipc.h>
|
|
#include <ipc/capnp/protocol.h>
|
|
#include <ipc/process.h>
|
|
#include <ipc/protocol.h>
|
|
#include <logging.h>
|
|
#include <tinyformat.h>
|
|
#include <util/system.h>
|
|
|
|
#include <functional>
|
|
#include <memory>
|
|
#include <stdexcept>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <string>
|
|
#include <unistd.h>
|
|
#include <utility>
|
|
#include <vector>
|
|
|
|
namespace ipc {
|
|
namespace {
|
|
class IpcImpl : public interfaces::Ipc
|
|
{
|
|
public:
|
|
IpcImpl(const char* exe_name, const char* process_argv0, interfaces::Init& init)
|
|
: m_exe_name(exe_name), m_process_argv0(process_argv0), m_init(init),
|
|
m_protocol(ipc::capnp::MakeCapnpProtocol()), m_process(ipc::MakeProcess())
|
|
{
|
|
}
|
|
std::unique_ptr<interfaces::Init> spawnProcess(const char* new_exe_name) override
|
|
{
|
|
int pid;
|
|
int fd = m_process->spawn(new_exe_name, m_process_argv0, pid);
|
|
LogPrint(::BCLog::IPC, "Process %s pid %i launched\n", new_exe_name, pid);
|
|
auto init = m_protocol->connect(fd, m_exe_name);
|
|
Ipc::addCleanup(*init, [this, new_exe_name, pid] {
|
|
int status = m_process->waitSpawned(pid);
|
|
LogPrint(::BCLog::IPC, "Process %s pid %i exited with status %i\n", new_exe_name, pid, status);
|
|
});
|
|
return init;
|
|
}
|
|
bool startSpawnedProcess(int argc, char* argv[], int& exit_status) override
|
|
{
|
|
exit_status = EXIT_FAILURE;
|
|
int32_t fd = -1;
|
|
if (!m_process->checkSpawned(argc, argv, fd)) {
|
|
return false;
|
|
}
|
|
m_protocol->serve(fd, m_exe_name, m_init);
|
|
exit_status = EXIT_SUCCESS;
|
|
return true;
|
|
}
|
|
void addCleanup(std::type_index type, void* iface, std::function<void()> cleanup) override
|
|
{
|
|
m_protocol->addCleanup(type, iface, std::move(cleanup));
|
|
}
|
|
Context& context() override { return m_protocol->context(); }
|
|
const char* m_exe_name;
|
|
const char* m_process_argv0;
|
|
interfaces::Init& m_init;
|
|
std::unique_ptr<Protocol> m_protocol;
|
|
std::unique_ptr<Process> m_process;
|
|
};
|
|
} // namespace
|
|
} // namespace ipc
|
|
|
|
namespace interfaces {
|
|
std::unique_ptr<Ipc> MakeIpc(const char* exe_name, const char* process_argv0, Init& init)
|
|
{
|
|
return std::make_unique<ipc::IpcImpl>(exe_name, process_argv0, init);
|
|
}
|
|
} // namespace interfaces
|