This partially reverts commit b130b35f4, "Update #include's: remove
unused and add missing ones", but fixes the following compiler and
analyzer warnings of Apple Xcode 5:
"Semantic issue: No previous prototype for function 'yyy'"
The "deheader" tool (<http://www.catb.org/~esr/deheader/>) has been
used to find unused #include directives as well as missing ones.
Tested on:
- A/UX 3.1.1
- ArchLinux (2014-03-17)
- Debian GNU/Hurd
- Debian GNU/Linux 6.0.9
- Debian GNU/Linux 7.4
- Fedora 20
- FreeBSD 9.2
- OpenBSD 4.8
- OpenBSD 5.1
- OS X 10.9
- Solaris 11
This fixes the following gcc warning, emitted by Xcode:
src/ngircd/sighandlers.c: In function 'Signal_Callback':
src/ngircd/sighandlers.c:239: warning: implicit conversion shortens 64-bit value into a 32-bit value
Signals_Init() must only be called once.
This does not affect any ngircd release version.
Earlier version of this patch moved the io and sighandler
initialization before the while() loop, but as Alexander
Barton noticed that broke all systems without builtin select
support in io.c...
- declare signals_catch[] array not between the function implementations.
- rename now local function NGIRCd_Rehash() to Rehash().
- remove empty and therefore not used "catch SIGHUP; break;".
This patch allows ngIRCd to dump its internal state (connected clients,
actual configuration) when compiled with --enable-debug. The daemon
catches two more signals:
- SIGUSR1: toggle debug mode (on/off),
- SIGUSR2: dump internal state to console/syslog.
now that the main signal handling is done from the dispatcher
loop we can call NGIRCD_Rehash() directly.
the /REHASH handler can queue the Rehash() function for
execution by sending a SIGHUP. It will be run when we
return back to the dispatch loop.
Allows to defer/queue signal processing for execution on the next
event dispatch call, i.e. we can perform any signal action in
normal, non-signal context.
Example uses:
- Reload everything on HUP without writing a global "SIGHUP_received"
variable
- Dump status of internal Lists on SIGUSR1, etc.
Alexander Barton