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Unix manual page for os_log_create. (host=minya system=Darwin)
os_log_create(3) BSD Library Functions Manual os_log_create(3)
NAME
os_log_create -- create an object that tracks the state of logging for a
given system.
SYNOPSIS
#include <os/log.h>
os_log_t
os_log_create(const char *subsystem, const char *category);
DESCRIPTION
Use os_log_create to create an object that can be passed to os_log(3)
calls. Log messages to this object will be marked with the object's sub-
system and category name. The behavior of log messages to this object
can be configured using the log(1) command.
EXAMPLES
Create a new os_log_t object and log a message:
#include <os/log.h>
/* create a log object for the subsystem, specifically the "connections" category" */
os_log_t log = os_log_create("com.example.widget", "connections");
/* log a connection related message */
os_log(log, "connection state changed: %d interface: %s", if, interface);
SEE ALSO
log(1), os_log(3)
Darwin November 14, 2024 Darwin