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| author | Justus Winter <4winter@informatik.uni-hamburg.de> | 2014-02-01 02:15:05 +0100 |
|---|---|---|
| committer | Justus Winter <4winter@informatik.uni-hamburg.de> | 2014-02-01 16:38:08 +0100 |
| commit | df47f83ed98e4ce356af8d34de05b549f4f9c912 (patch) | |
| tree | 45165e5a32c145c24cef230da20cf54c4997344f | |
| parent | fe7cd805567e1f4d1ed92d87b216e2dc78249892 (diff) | |
kern: add a name field to struct task
* kern/task.c (task_create): Initialize name with the address of the task.
* kern/task.h (TASK_NAME_SIZE): New definition.
(struct task): Add field name.
| -rw-r--r-- | kern/task.c | 3 | ||||
| -rw-r--r-- | kern/task.h | 9 |
2 files changed, 12 insertions, 0 deletions
diff --git a/kern/task.c b/kern/task.c index 13b3c76..0b5a6f7 100644 --- a/kern/task.c +++ b/kern/task.c @@ -45,6 +45,7 @@ #include <kern/slab.h> #include <kern/kalloc.h> #include <kern/processor.h> +#include <kern/printf.h> #include <kern/sched_prim.h> /* for thread_wakeup */ #include <kern/ipc_tt.h> #include <kern/syscall_emulation.h> @@ -164,6 +165,8 @@ kern_return_t task_create( } #endif /* FAST_TAS */ + snprintf (new_task->name, sizeof new_task->name, "%p", new_task); + ipc_task_enable(new_task); *child_task = new_task; 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) |