Support non-blocking i/o across platforms

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

View file

@ -947,7 +947,6 @@ syscon ioctl FIONCLEX 0x5450 0x5450 0x20006602 0x20006602 0x20006602 0
#syscon ioctl FIONWRITE 0x0 0x0 0x0 0x0 0x40046677 0x0 0x0 -1 # [FreeBSD Generalization] bytes queued in FD's output buffer (same as TIOCOUTQ for TTY FDs; see also SO_SNDBUF)
#syscon ioctl FIONSPACE 0x0 0x0 0x0 0x0 0x40046676 0x0 0x0 -1 # [FreeBSD Generalization] capacity of FD's output buffer, e.g. equivalent to TIOCGSERIAL w/ UART
syscon ioctl SIOCGIFCONF 0x8912 0x8912 0xc00c6924 0xc00c6924 0xc0106924 0xc0106924 0xc0106924 0
syscon ioctl SIOCATMARK 0x8905 0x8905 0x40047307 0x40047307 0x40047307 0x40047307 0x40047307 0x40047307 # use sockatmark(); determines if oob is available; bsd consensus
syscon ioctl SIOCADDMULTI 0x8931 0x8931 0x80206931 0x80206931 0x80206931 0x80206931 0x80206931 0 # bsd consensus
syscon ioctl SIOCDELMULTI 0x8932 0x8932 0x80206932 0x80206932 0x80206932 0x80206932 0x80206932 0 # bsd consensus
syscon ioctl SIOCDIFADDR 0x8936 0x8936 0x80206919 0x80206919 0x80206919 0x80206919 0x80206919 0 # bsd consensus