Update SQLite3 Drivers

Update bundled drivers to version 1.2.4.

vendor/plugins/sqlite3-ruby/test/native-vs-dl.rb

@@ -0,0 +1,126 @@
+$:.unshift "../lib", "../ext/sqlite3_api"
+
+require 'sqlite3'
+
+require 'benchmark'
+
+N = 1000
+
+$VERBOSE=nil
+
+puts "database creation..."
+Benchmark.bm( 7 ) do |x|
+  x.report('dl') do
+    N.times do
+      File.delete "test.db" rescue nil
+      SQLite3::Database.open( "test.db", :driver => "DL" ).close
+    end
+  end
+  x.report('native') do
+    N.times do
+      File.delete "test.db" rescue nil
+      SQLite3::Database.open( "test.db", :driver => "Native" ).close
+    end
+  end
+end
+File.delete "test.db" rescue nil
+
+SQLite3::Database.open( "test.db" ).close
+
+puts
+puts "database open..."
+Benchmark.bm( 7 ) do |x|
+  x.report('dl') do
+    N.times do
+      SQLite3::Database.open( "test.db", :driver => "DL" ).close
+    end
+  end
+  x.report('native') do
+    N.times do
+      SQLite3::Database.open( "test.db", :driver => "Native" ).close
+    end
+  end
+end
+File.delete "test.db" rescue nil
+
+dl = SQLite3::Database.open( "test-dl.db", :driver => "DL" )
+native = SQLite3::Database.open( "test-native.db", :driver => "Native" )
+
+dl.execute "create table foo (a,b)"
+native.execute "create table foo (a,b)"
+
+puts
+puts "insertions"
+Benchmark.bm( 7 ) do |x|
+  x.report('dl') do
+    dl.transaction do
+      N.times do |i|
+        dl.execute "insert into foo values (#{i}, #{i+1})"
+      end
+    end
+  end
+  x.report('native') do
+    native.transaction do
+      N.times do |i|
+        native.execute "insert into foo values (#{i}, #{i+1})"
+      end
+    end
+  end
+end
+
+puts
+puts "insertions using prepared statement"
+Benchmark.bm( 7 ) do |x|
+  x.report('dl') do
+    dl.transaction do
+      dl.prepare "insert into foo values (?,?)" do |stmt|
+        N.times { |i| stmt.execute i, i+1 }
+      end
+    end
+  end
+  x.report('native') do
+    native.transaction do
+      native.prepare( "insert into foo values (?,?)" ) do |stmt|
+        N.times { |i| stmt.execute i, i+1 }
+      end
+    end
+  end
+end
+
+dl.close
+native.close
+File.delete "test-dl.db" rescue nil
+File.delete "test-native.db" rescue nil
+
+dl = SQLite3::Database.open( "test-dl.db", :driver => "DL" )
+native = SQLite3::Database.open( "test-native.db", :driver => "Native" )
+
+dl.execute "create table foo (a,b)"
+dl.execute "insert into foo values (1,2)"
+dl.execute "insert into foo values (3,4)"
+dl.execute "insert into foo values (5,6)"
+
+native.execute "create table foo (a,b)"
+native.execute "insert into foo values (1,2)"
+native.execute "insert into foo values (3,4)"
+native.execute "insert into foo values (5,6)"
+
+puts
+puts "queries"
+Benchmark.bm( 7 ) do |x|
+  x.report('dl') do
+    N.times do
+      dl.execute "select * from foo"
+    end
+  end
+  x.report('native') do
+    N.times do
+      native.execute "select * from foo"
+    end
+  end
+end
+
+dl.close
+native.close
+File.delete "test-dl.db" rescue nil
+File.delete "test-native.db" rescue nil