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Kernel+LibC: Implement sigtimedwait()

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This includes a new Thread::Blocker called SignalBlocker which blocks
until a signal of a matching type is pending. The current Blocker
implementation in the Kernel is very complicated, but cleaning it up is
a different yak for a different day.
This commit is contained in:
Idan Horowitz 2021-12-12 01:01:42 +02:00
parent 13d98999b7
commit 762e047ec9
8 changed files with 120 additions and 0 deletions
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6
Userland/Libraries/LibC/signal.cpp
View file

@ -163,6 +163,12 @@ int sigsuspend(const sigset_t* set)
return pselect(0, nullptr, nullptr, nullptr, nullptr, set);
}
int sigtimedwait(sigset_t const* set, siginfo_t* info, struct timespec const* timeout)
{
int rc = syscall(Syscall::SC_sigtimedwait, set, info, timeout);
__RETURN_WITH_ERRNO(rc, rc, -1);
}
const char* sys_signame[] = {
"INVAL",
"HUP",

1
Userland/Libraries/LibC/signal.h
View file

@ -27,6 +27,7 @@ int sigismember(const sigset_t*, int sig);
int sigprocmask(int how, const sigset_t* set, sigset_t* old_set);
int sigpending(sigset_t*);
int sigsuspend(const sigset_t*);
int sigtimedwait(sigset_t const*, siginfo_t*, struct timespec const*);
int raise(int sig);
int getsignalbyname(const char*);
const char* getsignalname(int);