diff options
Diffstat (limited to 'cpukit/score/cpu/no_cpu/rtems/score/cpu.h')
| -rw-r--r-- | cpukit/score/cpu/no_cpu/rtems/score/cpu.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/cpukit/score/cpu/no_cpu/rtems/score/cpu.h b/cpukit/score/cpu/no_cpu/rtems/score/cpu.h index fbf207ad80..739a6a8a42 100644 --- a/cpukit/score/cpu/no_cpu/rtems/score/cpu.h +++ b/cpukit/score/cpu/no_cpu/rtems/score/cpu.h @@ -574,6 +574,18 @@ typedef struct { * is the stack pointer. */ uint32_t stack_pointer; + +#ifdef RTEMS_SMP + /** + * @brief On SMP configurations the thread context must contain a boolean + * indicator if this context is executing on a processor. + * + * This field must be updated during a context switch. The context switch + * to the heir must wait until the heir context indicates that it is no + * longer executing on a processor. + */ + volatile bool is_executing; +#endif } Context_Control; /** @@ -1582,6 +1594,12 @@ register struct Per_CPU_Control *_CPU_Per_CPU_current asm( "rX" ); { __asm__ volatile ( "" : : : "memory" ); } + + /** + * @brief Macro to return the is executing field of the thread context. + */ + #define _CPU_Context_Get_is_executing( _context ) \ + ( ( _context )->is_executing ) #endif #ifdef __cplusplus |