diff options
Diffstat (limited to 'kern/task.h')
| -rw-r--r-- | kern/task.h | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/kern/task.h b/kern/task.h index 9bfea571..2a4c28fc 100644 --- a/kern/task.h +++ b/kern/task.h @@ -39,6 +39,7 @@ #include <mach/time_value.h> #include <mach/mach_param.h> #include <mach/task_info.h> +#include <mach_debug/mach_debug_types.h> #include <kern/kern_types.h> #include <kern/lock.h> #include <kern/queue.h> @@ -48,11 +49,22 @@ #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 */ int ref_count; /* Number of references to me */ - boolean_t active; /* Task has not been terminated */ + + /* Flags */ + unsigned int active:1, /* Task has not been terminated */ + /* boolean_t */ may_assign:1, /* can assigned pset be changed? */ + assign_active:1; /* waiting for may_assign */ /* Miscellaneous */ vm_map_t map; /* Address space description */ @@ -63,8 +75,6 @@ struct task { queue_head_t thread_list; /* list of threads */ int thread_count; /* number of threads */ processor_set_t processor_set; /* processor set for new threads */ - boolean_t may_assign; /* can assigned pset be changed? */ - boolean_t assign_active; /* waiting for may_assign */ /* User-visible scheduling information */ int user_stop_count; /* outstanding stops */ @@ -111,6 +121,8 @@ 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) @@ -158,6 +170,9 @@ extern kern_return_t task_assign( extern kern_return_t task_assign_default( task_t task, boolean_t assign_threads); +extern kern_return_t task_set_name( + task_t task, + kernel_debug_name_t name); extern void consider_task_collect(void); /* @@ -167,6 +182,7 @@ extern void consider_task_collect(void); extern void task_init(void); extern void task_reference(task_t); extern void task_deallocate(task_t); +extern void task_hold_locked(task_t); extern kern_return_t task_hold(task_t); extern kern_return_t task_dowait(task_t, boolean_t); extern kern_return_t task_release(task_t); |