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author | Mattias Andrée <maandree@kth.se> | 2017-12-11 23:13:37 +0100 |
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committer | Mattias Andrée <maandree@kth.se> | 2017-12-11 23:13:37 +0100 |
commit | e35ba8684be9951fa2129503477ccd5ed6e4e5fc (patch) | |
tree | 756292d5a18ad6011a9311fdea8159f474385b65 /doc/man/bus_read.3 | |
parent | typo (diff) | |
download | bus-3.1.7.tar.gz bus-3.1.7.tar.bz2 bus-3.1.7.tar.xz |
Simplify, do not install examples or info manual, and change license3.1.7
Signed-off-by: Mattias Andrée <maandree@kth.se>
Diffstat (limited to 'doc/man/bus_read.3')
-rw-r--r-- | doc/man/bus_read.3 | 79 |
1 files changed, 0 insertions, 79 deletions
diff --git a/doc/man/bus_read.3 b/doc/man/bus_read.3 deleted file mode 100644 index 1caadfb..0000000 --- a/doc/man/bus_read.3 +++ /dev/null @@ -1,79 +0,0 @@ -.TH BUS_READ 3 BUS-%VERSION% -.SH NAME -bus_read, bus_read_timed - Listen for new messages a bus -.SH SYNOPSIS -.LP -.nf -#include <bus.h> -.P -int bus_read(const bus_t *\fIbus\fP, int (*\fIcallback\fP)(const char *\fImessage\fP, void *\fIuser_data\fP), - void *\fIuser_data\fP); -int bus_read_timed(const bus_t *\fIbus\fP, int (*\fIcallback\fP)(const char *\fImessage\fP, void *\fIuser_data\fP), - void *\fIuser_data\fP, const struct timespec *\fItimeout\fP, clockid_t \fIclockid\fP); -.fi -.SH DESCRIPTION -The -.BR bus_read () -function waits for new message to be sent on the bus specified in -\fIbus\fP, as provieded by a previous call to the -.BR bus_open () -function. Once a message is received, the \fIcallback\fP function is -invoked. The \fImessage\fP argument to the callback is the received -message, and \fIuser_data\fP for \fIcallback\fP should be -\fIuser_data\fP from -.BR bus_read (). -However, once -.BR bus_read () -has ensured that it will receive any message sent on the bus, it shall -invoke the \fIcallback\fP function with \fImessage\fP set to \fINULL\fP, -to notify the process that it can perform any action that requires that -it is listening on the bus. -.PP -After \fIcallback\fP returns, \fImessage\fP may be override. Therefore -\fIcallback\fP should copy \fImessage\fP and start a new thread that -uses the copy of \fImessage\fP. \fIcallback\fP shall return -1 on -failure, 0 if -.BR bus_read () -should stop listening or 1 if -.BR bus_read () -should continue listening. -.PP -The -.BR bus_read_timed () -function behaves like -.BR bus_read (), -except it will automatically fail and set \fIerrno\fP to \fBEAGAIN\fP -when the specified time has passed. The time is specified as an -absolute time using the parameter \fItimeout\fP. The behaviour is -unspecified if \fItimeout\fP is \fINULL\fP. \fItimeout\fP is measured -with the clock whose ID is specified by the \fIclockid\fP parameter. -This clock must be a predicitable clock. -.SH RETURN VALUES -Upon successful completion, these functions returns 0. Otherwise the -function returns -1 and sets \fIerrno\fP to indicate the error. -.SH ERRORS -The -.BR bus_read (3) -function may fail and set \fIerrno\fP to any of the errors specified for -.BR semop (3). -The -.BR bus_read_timed (3) -function may also set \fIerrno\fP to any of the errors specified for -.BR clock_gettime (3). -.SH SEE ALSO -.BR bus-create (1), -.BR bus (5), -.BR libbus (7), -.BR bus_open (3), -.BR bus_write (3), -.BR bus_poll (3), -.BR semop (3), -.BR clock_gettime (3) -.SH AUTHORS -Principal author, Mattias Andrée. See the LICENSE file for the full -list of authors. -.SH LICENSE -MIT/X Consortium License. -.SH BUGS -Please report bugs to https://github.com/maandree/bus/issues or to -maandree@member.fsf.org |