* PStore content update perf optimization. Patch by Masaki Matsushita.

  See #5248.

* lib/pstore.rb (save_data):

  * Delete inadequate Marshal check.

  * Deferred file truncation: when writing the new content, truncate
    the saved file to the data size after writing the data, instead of
    truncating whole bytes before writing data.

  * Deferred MD5 calculation: when comparing MD5 hash to check the
    content modification, calculate MD5 hash of new data iif the
    content length is differ from the old one.

  * Compare content size with String#bytesize instead of String#size.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@34083 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 19 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 666f8edc2b..0cc1414929 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,22 @@
+Tue Dec 20 23:50:12 2011  Hiroshi Nakamura  <nahi@ruby-lang.org>
+
+	* PStore content update perf optimization. Patch by Masaki Matsushita.
+	  See #5248.
+
+	* lib/pstore.rb (save_data):
+
+	  * Delete inadequate Marshal check.
+
+	  * Deferred file truncation: when writing the new content, truncate
+	    the saved file to the data size after writing the data, instead of
+	    truncating whole bytes before writing data.
+
+	  * Deferred MD5 calculation: when comparing MD5 hash to check the
+	    content modification, calculate MD5 hash of new data iif the
+	    content length is differ from the old one.
+
+	  * Compare content size with String#bytesize instead of String#size.
+
 Tue Dec 20 21:00:30 2011  Tadayoshi Funaba  <tadf@dotrb.org>
 
 	* ext/date/date_core.c: uses to_integer instead.