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 October 29, 2017 Darwin
Mac OS X 10.12.6 - Generated Sun Oct 29 14:43:53 CDT 2017