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Question: Have you ever thought to keep all global vars in one structure instead of g_barman?
Asked by Jeremy, the kid (178.147.28.x) on March 1 2013, 10:13pm
Reply on March 1 2013, 10:21pm (edited at March 1 2013, 10:29pm):
    Reasons against a global struct storing all global vars:
    1. You usually only initialize some of them to values other than 0 -- if using a single struct, the 0 variables will be encoded as 0s in the binary, whereas with individual variables the linker can put all 0-initialized values in the BSS.
    2. The file that defines that struct will probably be a pain to merge.

    I don't really see the upside.

    As a side note, I absolutely insist on all structs/classes that have non-trivial methods to have their member data begin with m_. Having to work with code that does not do this is completely maddening. Using g_ and s_ prefixes for global / static data is also a must*, and generally never causes any problem for me (even if sometimes you end up at the top level with 'static int g_foo' or 'int s_foo' which is misleading).

    * Note: static data without the s_ prefix is OK to me if the scope of that data is very small
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