mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-05-24 06:12:27 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Support non-blocking i/o across platforms

Browse source 
This change introduces new tests for `O_NONBLOCK` and `SOCK_NONBLOCK` to
confirm that non-blocking i/o is now working on all supported platforms,
including Windows. For example, you can now say on Windows, MacOS, etc.:

    socket(AF_INET, SOCK_STREAM | SOCK_NONBLOCK, IPPROTO_TCP);

To create a non-blocking IPv4 TCP socket. Or you can enable non-blocking
i/o on an existing socket / pipe / etc. file descriptor by calling fcntl

    fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_NONBLOCK);

This functionality is polyfilled on older Linux kernels too, e.g. RHEL5.
Now that fcntl() support is much better the FIOCLEX / FIONCLEX polyfills
for ioctl() have been removed since they're ugly non-POSIX diameond APIs

This change fixes a weakness in kprintf() that was causing Windows trace
tools to frequently crash.
This commit is contained in:
Justine Tunney 2023-07-23 02:56:47 -07:00
parent 5c9e03e3e0
commit 1d4eb08fa1
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
102 changed files with 678 additions and 331 deletions
Download patch file Download diff file Expand all files Collapse all files

8
libc/sock/socket-nt.c
View file

@ -24,7 +24,6 @@
#include "libc/nt/winsock.h"
#include "libc/sock/internal.h"
#include "libc/sock/yoink.inc"
#include "libc/sysv/consts/fio.h"
#include "libc/sysv/consts/ipproto.h"
#include "libc/sysv/consts/o.h"
#include "libc/sysv/consts/so.h"
@ -52,13 +51,6 @@ textwindows int sys_socket_nt(int family, int type, int protocol) {
oflags = 0;
if (type & SOCK_CLOEXEC) oflags |= O_CLOEXEC;
if (type & SOCK_NONBLOCK) oflags |= O_NONBLOCK;
if (type & SOCK_NONBLOCK) {
if (__sys_ioctlsocket_nt(h, FIONBIO, (uint32_t[1]){1}) == -1) {
__sys_closesocket_nt(h);
__releasefd(fd);
return __winsockerr();
}
}
sockfd = calloc(1, sizeof(struct SockFd));
sockfd->family = family;
sockfd->type = truetype;