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Fix bugs with recent change

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This change makes further effort towards improving our poll()
implementation on the New Technology. The stdin worker didn't work out
so well for Python so it's not being used for now. System call tracing
with the --strace flag should now be less noisy now on Windows unless
you modify the strace.internal.h defines to turn on some optional ones
that are most useful for debugging the system call wrappers.
This commit is contained in:
Justine Tunney 2022-04-16 10:40:23 -07:00
parent 933411ba99
commit dc0ea6640e
127 changed files with 1354 additions and 866 deletions
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12
libc/calls/read-nt.c
View file

@ -26,6 +26,7 @@
#include "libc/errno.h"
#include "libc/intrin/kprintf.h"
#include "libc/limits.h"
#include "libc/nt/enum/filetype.h"
#include "libc/nt/enum/wait.h"
#include "libc/nt/errors.h"
#include "libc/nt/files.h"
@ -40,15 +41,20 @@ static textwindows ssize_t sys_read_nt_impl(struct Fd *fd, void *data,
size_t size, ssize_t offset) {
uint32_t err, got, avail;
struct NtOverlapped overlap;
if (fd->worker) {
if (GetFileType(fd->handle) == kNtFileTypePipe) {
for (;;) {
if (!PeekNamedPipe(fd->handle, 0, 0, 0, &avail, 0)) break;
if (avail) break;
if (SleepEx(__SIG_POLLING_INTERVAL_MS, true) == kNtWaitIoCompletion ||
_check_interrupts(true, g_fds.p)) {
POLLTRACE("sys_read_nt polling");
if (SleepEx(__SIG_POLLING_INTERVAL_MS, true) == kNtWaitIoCompletion) {
POLLTRACE("IOCP EINTR");
}
if (_check_interrupts(true, g_fds.p)) {
POLLTRACE("sys_read_nt interrupted");
return eintr();
}
}
POLLTRACE("sys_read_nt ready to read");
}
if (ReadFile(fd->handle, data, _clampio(size), &got,
_offset2overlap(fd->handle, offset, &overlap))) {