Class: Concurrent::CAtomic

Inherits:

Object

• Object
• Concurrent::CAtomic

Includes:

AtomicDirectUpdate, AtomicNumericCompareAndSetWrapper

Defined in:

lib/concurrent/atomic_reference/ruby.rb

Overview

An object reference that may be updated atomically.

Testing with ruby 2.1.2

*** Sequential updates ***
                 user     system      total        real
no lock      0.000000   0.000000   0.000000 (  0.005502)
mutex        0.030000   0.000000   0.030000 (  0.025158)
MutexAtomic  0.100000   0.000000   0.100000 (  0.103096)
CAtomic      0.040000   0.000000   0.040000 (  0.034012)

*** Parallel updates ***
                 user     system      total        real
no lock      0.010000   0.000000   0.010000 (  0.009387)
mutex        0.030000   0.010000   0.040000 (  0.032545)
MutexAtomic  0.830000   2.280000   3.110000 (  2.146622)
CAtomic      0.040000   0.000000   0.040000 (  0.038332)

Testing with jruby 1.9.3

*** Sequential updates ***
                 user     system      total        real
no lock      0.170000   0.000000   0.170000 (  0.051000)
mutex        0.370000   0.010000   0.380000 (  0.121000)
MutexAtomic  1.530000   0.020000   1.550000 (  0.471000)
JavaAtomic   0.370000   0.010000   0.380000 (  0.112000)

*** Parallel updates ***
                 user     system      total        real
no lock      0.390000   0.000000   0.390000 (  0.105000)
mutex        0.480000   0.040000   0.520000 (  0.145000)
MutexAtomic  1.600000   0.180000   1.780000 (  0.511000)
JavaAtomic   0.460000   0.010000   0.470000 (  0.131000)

See Also:

• http://docs.oracle.com/javase/8/docs/api/java/util/concurrent/atomic/AtomicReference.html
• http://docs.oracle.com/javase/8/docs/api/java/util/concurrent/atomic/package-summary.html

Instance Method Summary

• #_compare_and_set ⇒ Object
• #get ⇒ Object
• #get_and_set ⇒ Object
• #initialize ⇒ Object constructor
• #set ⇒ Object

Methods included from AtomicNumericCompareAndSetWrapper

#compare_and_set

Methods included from AtomicDirectUpdate

#try_update, #update

Constructor Details

#initialize ⇒ Object

# File 'lib/concurrent/atomic_reference/ruby.rb', line 22

Instance Method Details

#_compare_and_set ⇒ Object

# File 'lib/concurrent/atomic_reference/ruby.rb', line 34

#get ⇒ Object

# File 'lib/concurrent/atomic_reference/ruby.rb', line 25

#get_and_set ⇒ Object

# File 'lib/concurrent/atomic_reference/ruby.rb', line 31

#set ⇒ Object

# File 'lib/concurrent/atomic_reference/ruby.rb', line 28