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Deduplicated sigaction() boilerplate

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This commit is contained in:
Thomas Snider 2017-03-22 13:29:41 -07:00
parent 02d64bd929
commit 81a3857c4e
1 changed files with 19 additions and 14 deletions
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33
src/init.cpp
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@ -265,18 +265,31 @@ void Shutdown()
}
/**
* Signal handlers are very limited in what they are allowed to do, so:
* Signal handlers are very limited in what they are allowed to do.
* The execution context the handler is invoked in is not guaranteed,
* so we restrict handler operations to just touching variables:
*/
void HandleSIGTERM(int)
static void HandleSIGTERM(int)
{
fRequestShutdown = true;
}
void HandleSIGHUP(int)
static void HandleSIGHUP(int)
{
fReopenDebugLog = true;
}
#ifndef WIN32
static void registerSignalHandler(int signal, void(*handler)(int))
{
struct sigaction sa;
sa.sa_handler = handler;
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
sigaction(signal, &sa, NULL);
}
#endif
bool static Bind(CConnman& connman, const CService &addr, unsigned int flags) {
if (!(flags & BF_EXPLICIT) && IsLimited(addr))
return false;
@ -848,19 +861,11 @@ bool AppInitBasicSetup()
}
// Clean shutdown on SIGTERM
struct sigaction sa;
sa.sa_handler = HandleSIGTERM;
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
sigaction(SIGTERM, &sa, NULL);
sigaction(SIGINT, &sa, NULL);
registerSignalHandler(SIGTERM, HandleSIGTERM);
registerSignalHandler(SIGINT, HandleSIGTERM);
// Reopen debug.log on SIGHUP
struct sigaction sa_hup;
sa_hup.sa_handler = HandleSIGHUP;
sigemptyset(&sa_hup.sa_mask);
sa_hup.sa_flags = 0;
sigaction(SIGHUP, &sa_hup, NULL);
registerSignalHandler(SIGHUP, HandleSIGHUP);
// Ignore SIGPIPE, otherwise it will bring the daemon down if the client closes unexpectedly
signal(SIGPIPE, SIG_IGN);