I did a "quick and dirty" implementation of pthread_mutex asking for a recursive
mutex. here is what epicsMutexTestHost shows on linux
Original
One lock pair completes in 0.969810 micro sec
One double recursive lock pair completes in 1.747160 micro sec
One quad recursive lock pair completes in 3.318290 micro sec
Fast
earth% epicsMutexTestHost
One lock pair completes in 0.423110 micro sec
One double recursive lock pair completes in 0.674220 micro sec
One quad recursive lock pair completes in 1.174490 micro sec
By the way. To get this to work I had to
#define _XOPEN_SOURCE 500
Marty
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