Type Alias

dispatch_source_memorypressure_flags_t

Memory pressure events.

Declaration

typedef unsigned long dispatch_source_memorypressure_flags_t;

Topics

Memory Pressure Event Flags

DISPATCH_MEMORYPRESSURE_WARN

The system memory pressure condition is at the warning stage.

DISPATCH_MEMORYPRESSURE_NORMAL

The system memory pressure condition has returned to normal.

DISPATCH_MEMORYPRESSURE_CRITICAL

The system memory pressure condition is at the critical stage.

See Also

Getting Dispatch Source Attributes

dispatch_source_get_data

Returns pending data for the dispatch source.

dispatch_source_get_mask

Returns the mask of events monitored by the dispatch source.

dispatch_source_get_handle

Returns the underlying system handle associated with the specified dispatch source.

dispatch_source_merge_data

Merges data into a dispatch source and submits its event handler block to its target queue.

dispatch_source_proc_flags_t

Events related to a process.

dispatch_source_vnode_flags_t

Events involving a change to a file system object.

Beta Software

This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.

Learn more about using Apple's beta software