Commit Graph

3 Commits

Author SHA1 Message Date
Michael Stapelberg d638e3029a don’t use reversed identifiers for include guards (Thanks Markus)
Done with:

    sed -in 's/\(ifndef\|define\) _\([0-9A-Z_]*\)$/\1 I3_\2/' include/**/*.h

fixes #804
2012-09-21 15:36:25 +02:00
Michael Stapelberg e68a8dd86c shm-logging: implement i3-dump-log -f (follow)
This changes the SHM log format, it doesn’t use 0-bytes to separate
entries anymore. Instead of using lots of printf() calls in i3-dump-log,
we now do precisely one big write().

So, to be clear: i3-dump-log and i3 both need to be upgraded.
Mismatching versions will lead to garbage output (no crashes of i3, just
garbage output).

The -f flag uses an inter-process pthread_cond_t in the shared memory
header to broadcast the arrival of new messages to all i3-dump-log
processes. This internally uses futexes and thus doesn’t even mean a
kernel call in most cases. inter-process pthread_cond_ts require NPTL
(the Native Posix Thread Library, introduce in Linux 2.6).
2012-08-13 01:06:09 +02:00
Michael Stapelberg 89dded044b forgot include/shmlog.h 2012-01-07 14:59:58 +00:00