sd_bus_set_method_call_timeout, sd_bus_get_method_call_timeout — Set or query the default D-Bus method call timeout of a bus object
#include <systemd/sd-bus.h>
int sd_bus_set_method_call_timeout( | sd_bus *bus, |
uint64_t usec) ; |
int sd_bus_get_method_call_timeout( | sd_bus *bus, |
uint64_t *ret) ; |
sd_bus_set_method_call_timeout()
sets the default D-Bus method call
timeout of bus
to usec
microseconds.
sd_bus_get_method_call_timeout()
queries the default D-Bus method
call timeout of bus
. If no method call timeout was set using
sd_bus_set_method_call_timeout()
, the timeout is read from the
$SYSTEMD_BUS_TIMEOUT
environment variable. If this environment variable is
unset or does not contain a valid timeout, the implementation falls back to a predefined method
call timeout of 25 seconds. Note that $SYSTEMD_BUS_TIMEOUT
is read once and
cached so callers should not rely on being able to change the default method call timeout at
runtime by changing the value of $SYSTEMD_BUS_TIMEOUT
. Instead, call
sd_bus_set_method_call_timeout()
to change the default method call timeout.
On success, these functions return a non-negative integer. On failure, they return a negative errno-style error code.
Functions described here are available as a shared
library, which can be compiled against and linked to with the
libsystemd
pkg-config(1)
file.
The code described here uses
getenv(3),
which is declared to be not multi-thread-safe. This means that the code calling the functions described
here must not call
setenv(3)
from a parallel thread. It is recommended to only do calls to setenv()
from an early phase of the program when no other threads have been started.
sd_bus_set_method_call_timeout()
and
sd_bus_get_method_call_timeout()
were added in version 246.