* benchmark/bm_vm3_thread_mutex.rb: remove it.

* benchmark/bm_vm3_thread_mutex[1-3].rb: added 3 benchmarks.
  1: one thread with one mutex (no contention).
  2: two threads with one mutex (contention).
  3: 1000 threads with one mutex (huge number of contention)
  Abobe removed benchmark was type 3.
  Therefore, this commit adds type 1 and 2 benchmark.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32020 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,14 @@
+Sun Jun 12 13:33:52 2011  Koichi Sasada  <ko1@atdot.net>
+
+	* benchmark/bm_vm3_thread_mutex.rb: remove it.
+
+	* benchmark/bm_vm3_thread_mutex[1-3].rb: added 3 benchmarks.
+	    1: one thread with one mutex (no contention).
+	    2: two threads with one mutex (contention).
+	    3: 1000 threads with one mutex (huge number of contention)
+	  Abobe removed benchmark was type 3.
+	  Therefore, this commit adds type 1 and 2 benchmark.
+
 Sun Jun 12 11:16:59 2011  Tanaka Akira  <akr@fsij.org>
 
 	* io.c: use select() appropriately for sendfile().

benchmark/bm_vm3_thread_mutex1.rb

@@ -0,0 +1,21 @@
+# one thread, one mutex (no contention)
+
+require 'thread'
+m = Mutex.new
+r = 0
+max = 1000
+lmax = max * max
+(1..1).map{
+  Thread.new{
+    i=0
+    while i<lmax
+      i+=1
+      m.synchronize{
+        r += 1
+      }
+    end
+  }
+}.each{|e|
+  e.join
+}
+raise r.to_s if r != max * max

benchmark/bm_vm3_thread_mutex2.rb

@@ -0,0 +1,21 @@
+# two threads, one mutex
+
+require 'thread'
+m = Mutex.new
+r = 0
+max = 1000
+lmax = (max * max)/2
+(1..2).map{
+  Thread.new{
+    i=0
+    while i<lmax
+      i+=1
+      m.synchronize{
+        r += 1
+      }
+    end
+  }
+}.each{|e|
+  e.join
+}
+raise r.to_s if r != max * max

benchmark/bm_vm3_thread_mutex3.rb

@@ -1,18 +1,20 @@
-require 'thread'
-m = Mutex.new
-r = 0
-max = 1000
-(1..max).map{
-  Thread.new{
-    i=0
-    while i<max
-      i+=1
-      m.synchronize{
-        r += 1
-      }
-    end
-  }
-}.each{|e|
-  e.join
-}
-raise r.to_s if r != max * max
+# 1000 threads, one mutex
+
+require 'thread'
+m = Mutex.new
+r = 0
+max = 1000
+(1..max).map{
+  Thread.new{
+    i=0
+    while i<max
+      i+=1
+      m.synchronize{
+        r += 1
+      }
+    end
+  }
+}.each{|e|
+  e.join
+}
+raise r.to_s if r != max * max