Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
_CRT_DISABLE_PERFCRIT_LOCKS

_CRT_DISABLE_PERFCRIT_LOCKS

Disables performance-critical locking in I/O operations.

#define _CRT_DISABLE_PERFCRIT_LOCKS

Defining this symbol can improve performance in single-threaded I/O-bound programs by forcing all I/O operations to assume a single-threaded I/O model. For more information, see Multithreaded Libraries Performance.

Show:
© 2015 Microsoft