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.