include/kernel/critical.h

   1 #ifndef _CRITICAL_H
   2 #define _CRITICAL_H
   3
   4 #include <stdint.h>
   5 #include <exceptions.h>
   6
   7 extern volatile int critical_section_count;
   8
   9 static inline void enter_critical_section()
  10 {
  11     if (!critical_section_count) {
  12         arch_disable_interrupts();
  13     }
  14
  15     critical_section_count++;
  16 }
  17
  18 static inline void exit_critical_section()
  19 {
  20     if (!(--critical_section_count)) {
  21         arch_enable_interrupts();
  22     }
  23 }
  24
  25 #endif /* _CRITICAL_H */