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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.
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102 changed files with 678 additions and 331 deletions
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@ -947,7 +947,6 @@ syscon ioctl FIONCLEX 0x5450 0x5450 0x20006602 0x20006602 0x20006602 0
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#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)
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#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
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syscon ioctl SIOCGIFCONF 0x8912 0x8912 0xc00c6924 0xc00c6924 0xc0106924 0xc0106924 0xc0106924 0
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syscon ioctl SIOCATMARK 0x8905 0x8905 0x40047307 0x40047307 0x40047307 0x40047307 0x40047307 0x40047307 # use sockatmark(); determines if oob is available; bsd consensus
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syscon ioctl SIOCADDMULTI 0x8931 0x8931 0x80206931 0x80206931 0x80206931 0x80206931 0x80206931 0 # bsd consensus
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syscon ioctl SIOCDELMULTI 0x8932 0x8932 0x80206932 0x80206932 0x80206932 0x80206932 0x80206932 0 # bsd consensus
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syscon ioctl SIOCDIFADDR 0x8936 0x8936 0x80206919 0x80206919 0x80206919 0x80206919 0x80206919 0 # bsd consensus
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