From: Karl Malbrain Date: Sat, 25 Jan 2014 01:09:03 +0000 (-0800) Subject: explain latch manager variations X-Git-Url: https://pd.if.org/git/?a=commitdiff_plain;h=df02ae76e0a3ef84bee95b9d4b7c767d9a6bb41a;hp=e9e90ddd341b614dfe898aa5440172dd44a673f4;p=btree explain latch manager variations --- diff --git a/README.md b/README.md index 48568f2..54f9d23 100644 --- a/README.md +++ b/README.md @@ -7,19 +7,19 @@ There are four major code sets in the standard btree source code: btree2q.c Single Threaded/MultiProcess with latching supplied by advisory file locking. Works with network file systems. -threads2h.c Multi-Threaded/Multi-Process with latching implemented with pthreads/SRW latches in a latch manager. +threads2h.c Multi-Threaded/Multi-Process with latching implemented by a latch manager with pthreads/SRW latches in the first few btree pages. -threads2i.c Multi-Threaded/Multi-Process with latching implemented with test & set locks in the btree pages with thread yield system calls during contention. +threads2i.c Multi-Threaded/Multi-Process with latching implemented by a latch manager with test & set latches in the first few btree pages with thread yield system calls during contention. -threads2j.c Multi-Threaded/Multi-Process with latching implemented with test & set locks in the btree pages with Linux futex system calls duriing contention. +threads2j.c Multi-Threaded/Multi-Process with latching implemented by a latch manager with test & set locks in the first few btree pages with Linux futex system calls during contention. The Foster set includes three types of latching: -Fosterbtreee.c Multi-Threaded/Single Process with latching implemented with pthreads/SRW latches in a latch manager. +Fosterbtreee.c Multi-Threaded/Single Process with latching implemented by a latch manager with pthreads/SRW latches in the first few btree pages. -Fosterbtreef.c Multi-Threaded/Multi-Process with latching implemented with test & set locks in the btree pages with thread yield system calls during contention. +Fosterbtreef.c Multi-Threaded/Multi-Process with latching implemented by a latch manager with test & set locks in the first few btree pages with thread yield system calls during contention. -Fosterbtreeg.c Multi-Threaded/Multi-Process with latching implemented with test & set locks in the btree pages with Linux futex system calls duriing contention. +Fosterbtreeg.c Multi-Threaded/Multi-Process with latching implemented by a latch manager with test & set locks in the first few btree pages with Linux futex system calls during contention. Compilation is achieved on linux or Windows by: