Class: File

Inherits:
Object
  • Object
show all
Defined in:
lib/fsdb/file-lock.rb

Overview

Extensions to the File class for non-blocking file locking, and for recording a Format in the File object.

Constant Summary collapse

CAN_DELETE_OPEN_FILE = 
!FSDB::PLATFORM_IS_WINDOWS
CAN_OPEN_DIR = 
!FSDB::PLATFORM_IS_WINDOWS
LOCK_BLOCK_FIXED_VER =

Hurray!

"1.8.2"
LOCK_DOESNT_BLOCK = 
[RUBY_VERSION, LOCK_BLOCK_FIXED_VER].
map {|s| s.split('.')}.sort[0].join('.') ==  LOCK_BLOCK_FIXED_VER

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#format ⇒ Object

Returns the value of attribute format.



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# File 'lib/fsdb/file-lock.rb', line 5

def format
  @format
end

Instance Method Details

#fcntl_lock ⇒ Object 



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# File 'ext/fsdb/fcntl-lock.c', line 64

static VALUE
rb_file_fcntl_lock (obj, operation)
VALUE obj;

#lock_exclusive(lock_type) ⇒ Object

Get an exclusive (i.e., write) lock on the file. If the lock is not available, wait for it without blocking other ruby threads.



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# File 'lib/fsdb/file-lock.rb', line 17

def lock_exclusive lock_type    # :nodoc
end

#lock_shared(lock_type) ⇒ Object

Get a shared (i.e., read) lock on the file. If the lock is not available, wait for it without blocking other ruby threads.



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# File 'lib/fsdb/file-lock.rb', line 20

def lock_shared lock_type   # :nodoc
end