diff options
Diffstat (limited to 'kern/task.h')
| -rw-r--r-- | kern/task.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/kern/task.h b/kern/task.h index e852033..7ae10cd 100644 --- a/kern/task.h +++ b/kern/task.h @@ -48,6 +48,13 @@ #include <vm/vm_types.h> #include <machine/task.h> +/* + * Task name buffer size. The size is chosen so that struct task fits + * into three cache lines. The size of a cache line on a typical CPU + * is 64 bytes. + */ +#define TASK_NAME_SIZE 32 + struct task { /* Synchronization/destruction information */ decl_simple_lock_data(,lock) /* Task's lock */ @@ -113,6 +120,8 @@ struct task { natural_t cow_faults; /* copy-on-write faults counter */ natural_t messages_sent; /* messages sent counter */ natural_t messages_received; /* messages received counter */ + + char name[TASK_NAME_SIZE]; }; #define task_lock(task) simple_lock(&(task)->lock) |