Quick mutex question

This is a discussion on Quick mutex question within the Linux Programming forums, part of the Platform Specific Boards category; Compiler: GCC 2.95.4 Platform: Debian Thread Library: pth from GNU Ok say I have a struct such as Code: struct ...

  1. #1
    & the hat of GPL slaying Thantos's Avatar
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    Quick mutex question

    Compiler: GCC 2.95.4
    Platform: Debian
    Thread Library: pth from GNU

    Ok say I have a struct such as
    Code:
    struct blah {
      int x;
      int y;
      int c;
      /* blah blah blah */
      pth_mutex_t lock;
    };
    and I lock it with
    Code:
    struct blah blahblah;
    pth_acquire(&blahblah.lock, 0, NULL);
    Does it lock the entire structure? If not how do I lock the entire thing?

    At the time of this posting gnu.org is down so I'm not able to look there and the man page doesn't seem to explain it clearly.

    Thanks

  2. #2
    & the hat of GPL slaying Thantos's Avatar
    Join Date
    Sep 2001
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    Oh I think I might be misunderstanding it. The commands don't lock it per se but acts like a check point. So if its not open the thread waits till it is then you know its safe to change the data.

    Is this mostly correct?

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