[En-Nut-Discussion] NutEnterCritical vs NutEnterCriticalAccess()

[Uwe Bonnes]

>>>>> "Nathan" == Nathan Moore <nategoose at gmail.com> writes:

    Nathan> How about something like the following for each target cpu?
    Nathan> #define NutCriticalUpdate( VARIABLE, VALUE) \ do { \ size_t sz_
    Nathan> = sizeof(typeof(VARIABLE)); \ size_t sza_ =
    Nathan> sizeof(sig_atomic_t); \ typeof(VARIABLE) * VP_ = &(VARIABLE); \
    Nathan> typeof(VALUE) VAL_ = (VALUE); \ if (sz_ == sza_ &&
    Nathan> is_alligned(VP_) { \ *VP_ = VAL_; \ } else if (sz_ < sza) { \ /*
    Nathan> special consideration for cpu */ \ } else { \
    Nathan> NutEnterCritical(); \ *VP_ = VAL_; \ NutExitCritical(); \ } \ }
    Nathan> while (0) _______________________________________________
 This sounds interesting however:
- This is a GNU extention, and so deprecated for common code
- This only on direction, for writing the variable and more code for reading the
  variable is needed.
Bye
-- 
Uwe Bonnes                bon at elektron.ikp.physik.tu-darmstadt.de

Institut fuer Kernphysik  Schlossgartenstrasse 9  64289 Darmstadt
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