A data-processing bolt makes it possible to make sure that only one person reaches a resource at a given moment. This is often used in the field of the accesses to file S on Operating systems multi-user, because if two program S modify the same file at the same time, the risk is of:

  • to cause errors in one of the two programs, even in both;
  • to leave the file at the end of the treatment in a complete inconsistency;
  • to damage the handled file.

Internal bonds

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