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LibC: Mark a bunch of functions as cancellation points

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Tim Schumacher 2022-06-12 15:15:09 +02:00 • committed by Brian Gianforcaro
parent 899fd74f8e
commit c85f307e62
Notes: sideshowbarker 2024-07-17 08:39:41 +09:00
15 changed files with 78 additions and 0 deletions
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7
Userland/Libraries/LibC/signal.cpp
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@ -6,6 +6,7 @@
#include <AK/Format.h>
#include <assert.h>
#include <bits/pthread_cancel.h>
#include <errno.h>
#include <setjmp.h>
#include <signal.h>
@ -175,6 +176,8 @@ void siglongjmp(jmp_buf env, int val)
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/sigsuspend.html
int sigsuspend(sigset_t const* set)
{
__pthread_maybe_cancel();
int rc = syscall(SC_sigsuspend, set);
__RETURN_WITH_ERRNO(rc, rc, -1);
}
@ -182,6 +185,8 @@ int sigsuspend(sigset_t const* set)
// https://pubs.opengroup.org/onlinepubs/009604499/functions/sigwait.html
int sigwait(sigset_t const* set, int* sig)
{
__pthread_maybe_cancel();
int rc = syscall(Syscall::SC_sigtimedwait, set, nullptr, nullptr);
VERIFY(rc != 0);
if (rc < 0)
@ -199,6 +204,8 @@ int sigwaitinfo(sigset_t const* set, siginfo_t* info)
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/sigtimedwait.html
int sigtimedwait(sigset_t const* set, siginfo_t* info, struct timespec const* timeout)
{
__pthread_maybe_cancel();
int rc = syscall(Syscall::SC_sigtimedwait, set, info, timeout);
__RETURN_WITH_ERRNO(rc, rc, -1);
}