-Fosterbtreee.c Multi-Threaded/Single Process with latches hosted by the buffer pool manager
-Fosterbtreef.c Multi-Threaded/Multi-Process with latches hosted by a latch manager using the first few pages of the btree.
-Fosterbtreeg.c Multi-Threaded/Multi-Process with latches implemented with test & set locks in the btree pages.
+Fosterbtreee.c Multi-Threaded/Single Process with latching implemented with pthreads/SRW latches in a latch manager.
+
+Fosterbtreef.c Multi-Threaded/Multi-Process with latching implemented with test & set locks in the btree pages with thread yield system calls during contention.
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+Fosterbtreeg.c Multi-Threaded/Multi-Process with latching implemented with test & set locks in the btree pages with Linux futex system calls duriing contention.