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event/SocketMonitor: Schedule() returns bool

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This commit is contained in:
Max Kellermann 2019-12-18 17:46:33 +01:00
parent a8661b5931
commit 732bdc800d
2 changed files with 19 additions and 11 deletions
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16
src/event/SocketMonitor.cxx
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@ -68,20 +68,24 @@ SocketMonitor::Close() noexcept
Steal().Close(); Steal().Close();
} }
void bool
SocketMonitor::Schedule(unsigned flags) noexcept SocketMonitor::Schedule(unsigned flags) noexcept
{ {
assert(IsDefined()); assert(IsDefined());
if (flags == GetScheduledFlags()) if (flags == GetScheduledFlags())
return; return true;
bool success;
if (scheduled_flags == 0) if (scheduled_flags == 0)
loop.AddFD(fd.Get(), flags, *this); success = loop.AddFD(fd.Get(), flags, *this);
else if (flags == 0) else if (flags == 0)
loop.RemoveFD(fd.Get(), *this); success = loop.RemoveFD(fd.Get(), *this);
else else
loop.ModifyFD(fd.Get(), flags, *this); success = loop.ModifyFD(fd.Get(), flags, *this);
scheduled_flags = flags; if (success)
scheduled_flags = flags;
return success;
} }

14
src/event/SocketMonitor.hxx
View File

@ -98,18 +98,22 @@ public:
return scheduled_flags; return scheduled_flags;
} }
void Schedule(unsigned flags) noexcept; /**
* @return true on success, false on error (with errno set if
* USE_EPOLL is defined)
*/
bool Schedule(unsigned flags) noexcept;
void Cancel() noexcept { void Cancel() noexcept {
Schedule(0); Schedule(0);
} }
void ScheduleRead() noexcept { bool ScheduleRead() noexcept {
Schedule(GetScheduledFlags() | READ | HANGUP | ERROR); return Schedule(GetScheduledFlags() | READ | HANGUP | ERROR);
} }
void ScheduleWrite() noexcept { bool ScheduleWrite() noexcept {
Schedule(GetScheduledFlags() | WRITE); return Schedule(GetScheduledFlags() | WRITE);
} }
void CancelRead() noexcept { void CancelRead() noexcept {