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Make improvements

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- Improved async signal safety of read() particularly for longjmp()
- Started adding cancel cleanup handlers for locks / etc on Windows
- Make /dev/tty work better particularly for uses like `foo | less`
- Eagerly read console input into a linked list, so poll can signal
- Fix some libc definitional bugs, which configure scripts detected
This commit is contained in:
Justine Tunney 2023-09-21 07:30:39 -07:00
parent d6c2830850
commit 0c5dd7b342
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GPG key ID: BE714B4575D6E328
85 changed files with 1062 additions and 671 deletions
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11
libc/proc/kill-nt.c
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@ -18,11 +18,14 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/calls.h"
#include "libc/errno.h"
#include "libc/intrin/atomic.h"
#include "libc/intrin/dll.h"
#include "libc/nt/errors.h"
#include "libc/nt/runtime.h"
#include "libc/proc/proc.internal.h"
#include "libc/sysv/errfuns.h"
#include "libc/thread/thread.h"
#include "libc/thread/tls.h"
#ifdef __x86_64__
static textwindows int sys_kill_nt_impl(int pid, int sig) {
@ -50,7 +53,6 @@ static textwindows int sys_kill_nt_impl(int pid, int sig) {
}
textwindows int sys_kill_nt(int pid, int sig) {
int rc;
if (!(0 <= sig && sig <= 64)) return einval();
// XXX: NT doesn't really have process groups. For instance the
@ -66,9 +68,14 @@ textwindows int sys_kill_nt(int pid, int sig) {
return raise(sig);
}
int rc;
uint64_t m;
m = atomic_exchange(&__get_tls()->tib_sigmask, -1);
__proc_lock();
pthread_cleanup_push((void *)__proc_unlock, 0);
rc = sys_kill_nt_impl(pid, sig);
__proc_unlock();
pthread_cleanup_pop(true);
atomic_store_explicit(&__get_tls()->tib_sigmask, m, memory_order_release);
return rc;
}