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Fork server to background when the client/server process receives SIGHUP

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Avoid losing the whole session when closing the terminal emulator of
the client/server process, only the client will be removed and the
server will be forked.
This commit is contained in:
Maxime Coste 2017-09-11 14:21:07 +08:00
parent fdf7cf3944
commit ba71f209af
1 changed files with 11 additions and 3 deletions
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14
src/main.cc
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@ -53,7 +53,7 @@ struct startup_error : runtime_error
};
inline void write_stdout(StringView str) { write(1, str); }
inline void write_stderr(StringView str) { write(2, str); }
inline void write_stderr(StringView str) { try { write(2, str); } catch (runtime_error&) {} }
String runtime_directory()
{
@ -337,6 +337,7 @@ void register_options()
static Client* local_client = nullptr;
static int local_client_exit = 0;
static sig_atomic_t sighup_raised = 0;
static UserInterface* local_ui = nullptr;
static bool convert_to_client_pending = false;
@ -412,8 +413,8 @@ std::unique_ptr<UserInterface> create_local_ui(UIType ui_type)
kak_assert(not local_ui);
local_ui = this;
m_old_sighup = set_signal_handler(SIGHUP, [](int) {
ClientManager::instance().remove_client(*local_client, false, -1);
static_cast<LocalUI*>(local_ui)->on_sighup();
sighup_raised = 1;
});
m_old_sigtstp = set_signal_handler(SIGTSTP, [](int) {
@ -645,7 +646,14 @@ int run_server(StringView session, StringView server_init,
client_manager.clear_window_trash();
buffer_manager.clear_buffer_trash();
if (convert_to_client_pending)
if (sighup_raised)
{
ClientManager::instance().remove_client(*local_client, true, 0);
if (not client_manager.empty() and fork_server_to_background())
return 0;
sighup_raised = 0;
}
else if (convert_to_client_pending)
{
String buffer_name = local_client->context().buffer().name();
String selections = selection_list_to_string(local_client->context().selections());