| 词汇 | semaphore |
| 释义 | semaphore noun[ U ] uk /ˈsem.ə.fɔːr/ us /ˈsem.ə.fɔːr/ a system of communication using two flags held in your hands that are moved into different positions to represent different letters, numbers, or symbols旗语 eyewave/iStock/Getty Images Plus/GettyImages Specific signs and symbols argent badge blue badge Britannia caduceus check something off dot Greek cross Kitemark L-plate Maltese cross Mayday Morse code patch pipe registered trademark service mark underscore vert X, x Examples of semaphoresemaphore By clause 6, a waiting process can synchronize with the relevant monitor and is granted access provided the corresponding semaphore is unlocked. Another algorithm, for proving freedom from deadlock for two transactions synchronizing with binary semaphores only was also described. The requirement that the semaphore remain non-negative at all times limits allocation to the available resources. Although it is a compound structure, it is treated as an atomic element by semaphore. Mutual exclusion is enforced by providing each resource with a semaphore. Any time a process wants to exchange data, it will wait for the semaphore. We focus on the interaction between processes - this interaction is through shared resources, which are given by their semaphores. Two important features of semaphores make them the ideal candidates for the means of synchronization for data dependency and data consistency (mutual exclusion). Before the process gets back, it posts the semaphore to unlock the data. The following example defines a simple reactive system where a set of user processes interact with a binary semaphore which provides mutual exclusion in the access to a critical region. Stoughton (1981) compares access control and information flow in a simple imperative language with semaphores. As a result, the semaphore is locked. I agree that there are problems associated with flashing indicators and with the semaphore type as well. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The next point on signalling where this system might be of advantage is in connection with the system of sending signals by semaphore or light. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The semaphore principle in approaching legislation is not always the best guide. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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