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Cygwin: signal: implement signalfd

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First cut of a signalfd implementation.

Still TODO: Non-polling select.

This should mostly work as on Linux except for missing support
for some members of struct signalfd_siginfo, namely ssi_fd,
ssi_band (both SIGIO/SIGPOLL, not fully implemented) and ssi_trapno
(HW exception, required HW support).

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen
2019-01-13 23:13:33 +01:00
parent 8ae26f96ae
commit 9d13a2995c
17 changed files with 397 additions and 4 deletions
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3
winsup/cygwin/include/cygwin/version.h
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@ -502,12 +502,13 @@ details. */
330: Add CLOCK_REALTIME_COARSE, CLOCK_MONOTONIC_RAW, CLOCK_MONOTONIC_COARSE,
CLOCK_BOOTTIME.
331: Add timer_getoverrun, DELAYTIMER_MAX.
332: Add signalfd.
Note that we forgot to bump the api for ualarm, strtoll, strtoull,
sigaltstack, sethostname. */
#define CYGWIN_VERSION_API_MAJOR 0
#define CYGWIN_VERSION_API_MINOR 331
#define CYGWIN_VERSION_API_MINOR 332
/* There is also a compatibity version number associated with the shared memory
regions. It is incremented when incompatible changes are made to the shared