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  1. #include <stdio.h>
  2.  
  3. struct NormalContext {};
  4. struct InterruptContext {};
  5.  
  6. template <typename Context>
  7. struct LockHelper {
  8.     template <typename Func, typename... Args>
  9.     static void call (Func f, Args... args)
  10.     {
  11.         printf("CLI\n");
  12.         //cli();
  13.         f(InterruptContext(), args...);
  14.         //sei();
  15.         printf("SEI\n");
  16.     }
  17. };
  18.  
  19. template <>
  20. struct LockHelper<InterruptContext> {
  21.     template <typename Func, typename... Args>
  22.     static void call (Func f, Args... args)
  23.     {
  24.         f(InterruptContext(), args...);
  25.     }
  26. };
  27.  
  28. #define CRITICAL_SECTION(this_context, lock_context, body) \
  29.     LockHelper<decltype(this_context)>::call([&](InterruptContext lock_context) body)
  30.  
  31. template <typename Context>
  32. void function1 (Context c)
  33. {
  34.     CRITICAL_SECTION(c, lock_c, {
  35.         // do your stuff
  36.         // could also call other functions, but use lock_c
  37.         // function3(lock_c, ...);
  38.         // lock_c is always an InterruptContext() so no cli/sei will be done from inside here
  39.     });
  40. }
  41.  
  42. template <typename Context>
  43. void function2 (Context c)
  44. {
  45.     function1(c);
  46. }
  47.  
  48. int main ()
  49. {
  50.     {
  51.         printf("Calling function from NormalContext, this one does CLI/SEI\n");
  52.         NormalContext c;
  53.         function2(c);
  54.     }
  55.  
  56.     {
  57.         printf("Calling function from InterruptContext, this one doesn't do CLI/SEI\n");
  58.         InterruptContext c;
  59.         function2(c);
  60.     }
  61. }
  62.  
  63.  
Success #stdin #stdout 0s 3296KB
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Standard input is empty
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Calling function from NormalContext, this one does CLI/SEI
CLI
SEI
Calling function from InterruptContext, this one doesn't do CLI/SEI
https://ideone.com/Yk4iys
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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