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improving signal handling of the App class

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hyung-hwan
2018-09-06 09:59:54 +00:00
parent e8804b20ec
commit 5f29d1670f
3 changed files with 111 additions and 38 deletions
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20
qse/include/qse/si/App.hpp
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@ -41,20 +41,22 @@ public:
App (Mmgr* mmgr) QSE_CPP_NOEXCEPT;
virtual ~App () QSE_CPP_NOEXCEPT;
int daemonize (bool chdir_to_root = true, int fork_count = 1) QSE_CPP_NOEXCEPT;
int daemonize (bool chdir_to_root = true, int fork_count = 1, bool root_only = false) QSE_CPP_NOEXCEPT;
int chroot (const qse_mchar_t* mpath) QSE_CPP_NOEXCEPT;
int chroot (const qse_wchar_t* wpath) QSE_CPP_NOEXCEPT;
#if 0
int switchUser (uid_t uid, gid_t gid, bool permanently) QSE_CPP_NOEXCEPT;
int switchUser (qse_uid_t uid, qse_gid_t gid, bool permanently) QSE_CPP_NOEXCEPT;
int restoreUser () QSE_CPP_NOEXCEPT;
#endif
virtual void on_signal (int sig) { }
int subscribeToSignal (int sig, bool accept);
int subscribeToAllSignals (bool accept);
void unsubscribeFromSignal (int sig);
void unsubscribeFromAllSignals ();
typedef void (*SignalHandler) (int sig);
static qse_size_t _sighrs[2][QSE_NSIGS];
@ -70,17 +72,13 @@ public:
int guardProcess (const qse_mchar_t* proc_name);
protected:
bool _root_only;
private:
App* _prev_app;
App* _next_app;
public:
struct _SigLink
{
enum
enum State
{
UNHANDLED,
ACCEPTED,
@ -90,17 +88,23 @@ public:
_SigLink(): _prev(QSE_NULL), _next(QSE_NULL), _state(UNHANDLED) {}
App* _prev;
App* _next;
int _state;
State _state;
};
_SigLink _sig[QSE_NSIGS];
long int _guarded_child_pid;
protected:
static int set_signal_handler_no_mutex (int sig, SignalHandler sighr);
static int unset_signal_handler_no_mutex (int sig);
int subscribe_to_signal_no_mutex (int sig, _SigLink::State reqstate);
void unsubscribe_from_signal_no_mutex (int sig);
void unsubscribe_from_all_signals_no_mutex ();
void on_guard_signal (int sig);
static void handle_signal (int sig);
};
// functor as a template parameter