Berkeley DB

db_env_set_func_yield

						#include <db.h>
						int
						db_env_set_func_yield(int (*func_yield)(void));
					

Description

The Berkeley DB library requires the ability to yield the processor from the current thread of control to any other waiting threads of control. The func_yield argument must conform to the following interface:

int yield(void); 

The func_yield function must be able to cause the rescheduling of all participants in the current Berkeley DB environment, whether threaded or not. It may be incorrect to supply a thread yield function if more than a single process is operating in the Berkeley DB environment. This is because many thread-yield functions will not allow other processes to run, and the contested lock may be held by another process, not ...