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signal() semantics are pretty unclearly specified. For example, depending on OS kernel and libc, the handler may be returned to SIG_DFL (hence the inner call to read the signal handler). Moving to sigaction() means the behaviour is consistently defined. Using SA_NOCLDWAIT also allows us to avoid calling the non-reentrant function die() in the handler. Some addditional notes for archival purposes: * NRK pointed out errno of waitpid could also theoretically get clobbered. * The original patch was iterated on and modified by NRK and Hiltjo: * SIG_DFL was changed to SIG_IGN, this is required, atleast on older systems such as tested on Slackware 11. * signals are not blocked using sigprocmask, because in theory it would briefly for example also ignore a SIGTERM signal. It is OK if waitpid() is (in theory interrupted). POSIX reference: "Consequences of Process Termination": https://pubs.opengroup.org/onlinepubs/9699919799/functions/_Exit.html#tag_16_01_03_01 |
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config.def.h | ||
config.mk | ||
drw.c | ||
drw.h | ||
dwm.1 | ||
dwm.c | ||
dwm.png | ||
LICENSE | ||
Makefile | ||
README | ||
transient.c | ||
util.c | ||
util.h |
dwm - dynamic window manager ============================ dwm is an extremely fast, small, and dynamic window manager for X. Requirements ------------ In order to build dwm you need the Xlib header files. Installation ------------ Edit config.mk to match your local setup (dwm is installed into the /usr/local namespace by default). Afterwards enter the following command to build and install dwm (if necessary as root): make clean install Running dwm ----------- Add the following line to your .xinitrc to start dwm using startx: exec dwm In order to connect dwm to a specific display, make sure that the DISPLAY environment variable is set correctly, e.g.: DISPLAY=foo.bar:1 exec dwm (This will start dwm on display :1 of the host foo.bar.) In order to display status info in the bar, you can do something like this in your .xinitrc: while xsetroot -name "`date` `uptime | sed 's/.*,//'`" do sleep 1 done & exec dwm Configuration ------------- The configuration of dwm is done by creating a custom config.h and (re)compiling the source code.