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Make win32 i/o signals atomic and longjmp() safe

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This commit is contained in:
Justine Tunney 2023-11-04 20:29:25 -07:00
parent 585c86e2a4
commit d7917ea076
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GPG key ID: BE714B4575D6E328
20 changed files with 381 additions and 263 deletions
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4
libc/calls/write-nt.c
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@ -49,7 +49,6 @@ static inline void RaiseSignal(int sig) {
static textwindows ssize_t sys_write_nt_impl(int fd, void *data, size_t size,
ssize_t offset,
uint64_t waitmask) {
uint64_t m;
struct Fd *f = g_fds.p + fd;
bool isconsole = f->kind == kFdConsole;
@ -78,9 +77,7 @@ static textwindows ssize_t sys_write_nt_impl(int fd, void *data, size_t size,
// return edquot(); /* handled by consts.sh */
case kNtErrorBrokenPipe: // broken pipe
case kNtErrorNoData: // closing named pipe
m = __sig_beginwait(waitmask);
RaiseSignal(SIGPIPE);
__sig_finishwait(m);
return epipe();
case kNtErrorAccessDenied: // write doesn't return EACCESS
return ebadf();
@ -111,7 +108,6 @@ static textwindows ssize_t sys_write_nt2(int fd, const struct iovec *iov,
total += rc;
if (opt_offset != -1) opt_offset += rc;
if (rc < iov[i].iov_len) break;
waitmask = -1; // disable eintr/ecanceled for remaining iovecs
}
return total;
} else {