diff options
-rw-r--r-- | file.c | 14 |
1 files changed, 13 insertions, 1 deletions
@@ -3499,7 +3499,19 @@ rb_thread_flock(void *data) * * Example: * - * File.new("testfile").flock(File::LOCK_UN) #=> 0 + * # write lock + * # don't use "w" because it truncates the file before lock. + * File.open("testfile", File::WRONLY|File::CREAT, 0644) {|f| + * f.flock(File::LOCK_EX) + * f.truncate(0) + * f.write "new content" + * } + * + * # read lock + * File.open("testfile", "r") {|f| + * f.flock(File::LOCK_SH) + * p f.read + * } * */ |