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- Fix bugs in kDos2Errno definition
- malloc() should now be thread safe
- Fix bug in rollup.com header generator
- Fix open(O_APPEND) on the New Technology
- Fix select() on the New Technology and test it
- Work towards refactoring i/o for thread safety
- Socket reads and writes on NT now poll for signals
- Work towards i/o completion ports on the New Technology
- Make read() and write() intermittently check for signals
- Blinkenlights keyboard i/o so much better on NT w/ poll()
- You can now poll() files and sockets at the same time on NT
- Fix bug in appendr() that manifests with dlmalloc footers off
This commit is contained in:
Justine Tunney 2022-04-14 23:39:48 -07:00
parent 233144b19d
commit 933411ba99
266 changed files with 8761 additions and 4344 deletions
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71
libc/sock/recvfrom-nt.c
View file

@ -1,5 +1,5 @@
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8
-*-│ │vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
@ -16,13 +16,17 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/assert.h"
#include "libc/calls/internal.h"
#include "libc/calls/sig.internal.h"
#include "libc/calls/strace.internal.h"
#include "libc/nt/enum/wait.h"
#include "libc/nt/errors.h"
#include "libc/nt/struct/overlapped.h"
#include "libc/nt/winsock.h"
#include "libc/sock/internal.h"
#include "libc/sock/yoink.inc"
#include "libc/sysv/errfuns.h"
/**
* Performs recv(), recvfrom(), or readv() on Windows NT.
* Performs datagram receive on New Technology.
*
* @param fd must be a socket
* @return number of bytes received, or -1 w/ errno
@ -31,14 +35,53 @@ textwindows ssize_t sys_recvfrom_nt(struct Fd *fd, const struct iovec *iov,
size_t iovlen, uint32_t flags,
void *opt_out_srcaddr,
uint32_t *opt_inout_srcaddrsize) {
uint32_t got;
ssize_t rc;
uint32_t i, got = 0;
struct NtIovec iovnt[16];
got = 0;
if (WSARecvFrom(fd->handle, iovnt, __iovec2nt(iovnt, iov, iovlen), &got,
&flags, opt_out_srcaddr, opt_inout_srcaddrsize, NULL,
NULL) != -1) {
return got;
} else {
return __winsockerr();
struct NtOverlapped overlapped = {.hEvent = WSACreateEvent()};
if (_check_interrupts(true, g_fds.p)) return eintr();
if (!WSARecvFrom(fd->handle, iovnt, __iovec2nt(iovnt, iov, iovlen), &got,
&flags, opt_out_srcaddr, opt_inout_srcaddrsize, &overlapped,
NULL)) {
rc = got;
goto Finished;
}
if (WSAGetLastError() != kNtErrorIoPending) {
STRACE("WSARecvFrom failed %lm");
rc = __winsockerr();
goto Finished;
}
for (;;) {
i = WSAWaitForMultipleEvents(1, &overlapped.hEvent, true,
__SIG_POLLING_INTERVAL_MS, true);
if (i == kNtWaitFailed) {
STRACE("WSAWaitForMultipleEvents failed %lm");
rc = __winsockerr();
goto Finished;
} else if (i == kNtWaitTimeout) {
if (_check_interrupts(true, g_fds.p)) {
rc = eintr();
goto Finished;
}
} else if (i == kNtWaitIoCompletion) {
STRACE("IOCP TRIGGERED EINTR");
} else {
break;
}
}
if (!WSAGetOverlappedResult(fd->handle, &overlapped, &got, false, &flags)) {
STRACE("WSAGetOverlappedResult failed %lm");
rc = __winsockerr();
goto Finished;
}
rc = got;
Finished:
WSACloseEvent(overlapped.hEvent);
return rc;
}