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Make signal handling work well across platforms

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- Fix sigsuspend() on XNU
- Fix strsignal() on non-Linux
- Add unit tests for strsignal()
- Add unit tests for setitimer()
- Add unit tests for sigsuspend()
- Rewrite setitimer() for New Technology
- Rewrite nanosleep() for New Technology
- Polyfill SIGALRM on the New Technology
- select(0,0,0,0) on NT now calls pause()
- Remove some NTDLL calls that aren't needed
- Polyfill SA_NOCLDWAIT on the New Technology
- Polyfill SA_RESETHAND on the New Technology
- Polyfill sigprocmask() on the New Technology
- Polyfill SIGCHLD+SIG_IGN on the New Technology
- Polyfill SA_RESTART masking on the New Technology
- Deliver console signals from main thread on New Technology
- Document SA_RESTART behavior w/ @sarestartable / @norestart
- System call trace in MODE=dbg now prints inherited FDs and signal mask
This commit is contained in:
Justine Tunney 2022-03-25 07:11:44 -07:00
parent 3b9e66ecba
commit 072e1d2910
82 changed files with 1388 additions and 450 deletions
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12
libc/sock/select-nt.c
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@ -17,6 +17,7 @@
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/bits/popcnt.h"
#include "libc/calls/calls.h"
#include "libc/calls/internal.h"
#include "libc/macros.internal.h"
#include "libc/mem/mem.h"
@ -119,12 +120,13 @@ int sys_select_nt(int nfds, fd_set *readfds, fd_set *writefds,
} else if (timeout) {
req.tv_sec = timeout->tv_sec;
req.tv_nsec = timeout->tv_usec * 1000;
if ((rc = sys_nanosleep_nt(&req, &rem)) != -1) {
timeout->tv_sec = rem.tv_sec;
timeout->tv_usec = rem.tv_nsec / 1000;
}
rem.tv_sec = 0;
rem.tv_nsec = 0;
rc = sys_nanosleep_nt(&req, &rem);
timeout->tv_sec = rem.tv_sec;
timeout->tv_usec = rem.tv_nsec / 1000;
} else {
rc = einval();
rc = pause();
}
return rc;
}