class Atomic
Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
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Define update methods that delegate to @ref field
Define update methods that use direct paths
Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
extend Rubinius’s version adding aliases and numeric logic
Public Instance Methods
Source
# File lib/atomic/numeric_cas_wrapper.rb, line 15 def compare_and_set(expected, new) if expected.kind_of? Numeric while true old = get return false unless old.kind_of? Numeric return false unless old == expected result = _compare_and_set(old, new) return result if result end else _compare_and_set(expected, new) end end
Source
# File lib/atomic/delegated_update.rb, line 25 def try_update old_value = @ref.get new_value = yield old_value unless @ref.compare_and_set(old_value, new_value) if $VERBOSE raise ConcurrentUpdateError, "Update failed" else raise ConcurrentUpdateError, "Update failed", ConcurrentUpdateError::CONC_UP_ERR_BACKTRACE end end new_value end
Source
# File lib/atomic/delegated_update.rb, line 20 def update true until @ref.compare_and_set(old_value = @ref.get, new_value = yield(old_value)) new_value end
Pass the current value to the given block, replacing it with the block’s result. May retry if the value changes during the block’s execution.