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  1. Core Server
  2. SERVER-5739

Race condition in SOMETIMES/MONGO_SOMETIMES macros

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    Details

    • Backwards Compatibility:
      Fully Compatible
    • Operating System:
      ALL
    • Sprint:
      Dev Tools 2018-11-19

      Description

      The definition of MONGO_SOMETIMES contains a race condition. It's current implementation is as follows:

      #define MONGO_SOMETIMES( occasion, howOften ) for( static unsigned occasion = 0; ++occasion % howOften == 0; )

      Plain-and-simple not thread safe.

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          is related to

          Bug - A problem which impairs or prevents the functions of the product. SERVER-37247 Rarely macro should log first use of deprecated command

          • Major - P3 - Major loss of function.
          • Closed

          Task - A task that needs to be done. SERVER-14536 Helgrind suppressions for race-prone counters.cpp code

          • Trivial - P5 - Cosmetic problem like misspelt words or misaligned text.
          • Closed

            Activity

              People

              Assignee:
              billy.donahue Billy Donahue
              Reporter:
              schwerin Andy Schwerin
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                Dates

                Created:
                Updated:
                Resolved: