Fix concurrency bug with CLOCK_bit and latch->pin

[btree] / README.md

diff --git a/README.md b/README.md
index 4a81c1ae04abdd60f2e2ed94bb8957196335be74..338a020cef284359185f25ebc9969272cea235b7 100644 (file)
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 Btree-source-code
 =================
 
-A working project for High-concurrency B-tree source code in C
+A working project for High-concurrency B-tree source code in C.  You probably want to download threadskv6.c for the latest developement version.
 
 Here are files in the btree source code:
 
@@ -25,6 +25,12 @@ threadskv2.c Multi-Threaded/Multi-Process based on threadskv1 that replaces the
 
 threadskv3.c   Multi-Threaded/Multi-Process based on threadskv1 that introduces librarian filler slots in the linear key array to minimize data movement when a new key is inserted into the middle of the array.
 
+threadskv4b.c  Multi-Threaded/Multi-Process based on threadskv3 that manages duplicate keys added to the btree.
+
+threadskv5.c   Multi-Threaded/Multi-Process based on threadskv4b that supports bi-directional cursors through the btree. Also supports raw disk partitions for btrees.
+
+threadskv6.c   Multi-Threaded/Single-Process with traditional buffer pool manager using the swap device.  Based on threadskv5 and btree2u.
+
 Compilation is achieved on linux or Windows by:
 
 gcc -D STANDALONE threads2h.c -lpthread