os_signpost_interval_begin
Marks the start of a time interval in your code using a signpost.
Declaration
#define os_signpost_interval_begin(log, interval_id, name, ...)Parameters
- log:
A log object to log the signpost to.
- interval_id:
A signpost identifier used to disambiguate between signposts with the same name.
- name:
The name of the signpost.
- …:
Optional. If specified, provide a format string, followed by the expected number of arguments in the order that they appear in the string.
Discussion
Calling this function is equivalent to calling os_signpost_emit_with_type with a type of OS_SIGNPOST_INTERVAL_BEGIN.