sd_bus_message_seal — Prepare a D-Bus message for transmission
#include <systemd/sd-bus.h>
int sd_bus_message_seal( | sd_bus_message *m, |
| uint64_t cookie, | |
uint64_t timeout_usec); |
sd_bus_message_seal() finishes the message m
and prepares it for transmission using
sd_bus_send(3).
cookie specifies the identifier used to match the message reply to its
corresponding request. timeout_usec specifies the maximum time in
microseconds to wait for a reply to arrive.
Note that in most scenarios, it is not necessary to call this function directly. sd_bus_call(3), sd_bus_call_async(3) and sd_bus_send(3) will seal any given messages if they have not been sealed yet.
On success, this function returns a non-negative integer. On failure, it returns 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.
All functions listed here are thread-agnostic and only a single thread may operate on a given object at any given time. Different threads may access the same object at different times. Multiple independent objects may be used from different threads in parallel.
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.