_CRT_DISABLE_PERFCRIT_LOCKS

Disables performance-critical locking in I/O operations.

#define _CRT_DISABLE_PERFCRIT_LOCKS

Remarks

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.

See Also

Concepts

Global Constants