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authormatz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>1999-11-17 07:30:37 +0000
committermatz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>1999-11-17 07:30:37 +0000
commit8e48dc16e97a783a69f0972b4882ad2faae561ea (patch)
treec25927a4f286e4ed5f3c7637076332e99287b089 /lib/pstore.rb
parent943e99e62746388456955729e9f8417f3df5f8b5 (diff)
19991117
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@564 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'lib/pstore.rb')
-rw-r--r--lib/pstore.rb11
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/pstore.rb b/lib/pstore.rb
index 2aa9864..cc90207 100644
--- a/lib/pstore.rb
+++ b/lib/pstore.rb
@@ -78,6 +78,16 @@ class PStore
begin
@transaction = true
value = file = nil
+ lock = @filename + ".lock"
+ loop do
+ begin
+ File::symlink("pstore::#$$", lock)
+ break
+ rescue Errno::EEXIST
+ rescue
+ sleep 1
+ end
+ end
begin
File::open(@filename, "r") do |file|
@table = Marshal.load(file)
@@ -112,6 +122,7 @@ class PStore
ensure
@table = nil
@transaction = false
+ File::unlink(lock)
end
value
end