diff options
Diffstat (limited to 'nuttx/mm/mm_gran.h')
| -rw-r--r-- | nuttx/mm/mm_gran.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/nuttx/mm/mm_gran.h b/nuttx/mm/mm_gran.h index d8a334e29..4a76397c8 100644 --- a/nuttx/mm/mm_gran.h +++ b/nuttx/mm/mm_gran.h @@ -43,6 +43,7 @@ #include <nuttx/config.h> #include <stdint.h> +#include <semaphore.h> #include <nuttx/gran.h> @@ -87,6 +88,7 @@ struct gran_s { uint8_t log2gran; /* Log base 2 of the size of one granule */ uint16_t ngranules; /* The total number of (aligned) granules in the heap */ + sem_t exclsem; /* For exclusive access to the GAT */ uintptr_t heapstart; /* The aligned start of the granule heap */ uint32_t gat[1]; /* Start of the granule allocation table */ }; @@ -105,4 +107,22 @@ extern FAR struct gran_s *g_graninfo; * Public Function Prototypes ****************************************************************************/ +/**************************************************************************** + * Name: gran_semtake and gran_semgive + * + * Description: + * Managed semaphore for the granule allocator. gran_semgive is + * implemented as a macro. + * + * Input Parameters: + * priv - Pointer to the gran state + * + * Returned Value: + * None + * + ****************************************************************************/ + +void gran_semtake(FAR struct gran_s *priv); +#define gran_semgive(p) sem_post(&(p)->exclsem); + #endif /* __MM_MM_GRAN_H */ |