xnu-792.6.70.tar.gz

[apple/xnu.git] / osfmk / kern / task.h

diff --git a/osfmk/kern/task.h b/osfmk/kern/task.h
index 07645a4a12d61e066e39542be007c3e2cf4176e1..050f669067812ddc4be7dd63986d219f4373c4b8 100644 (file)
--- a/osfmk/kern/task.h
+++ b/osfmk/kern/task.h
@@ -1,24 +1,21 @@
 /*
 /*

- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.

  *
  * @APPLE_LICENSE_HEADER_START@
  * 
  *
  * @APPLE_LICENSE_HEADER_START@
  * 

- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * The contents of this file constitute Original Code as defined in and
+ * are subject to the Apple Public Source License Version 1.1 (the
+ * "License").  You may not use this file except in compliance with the
+ * License.  Please obtain a copy of the License at
+ * http://www.apple.com/publicsource and read it before using this file.

  * 
  * 

- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- * 
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * This Original Code and all software distributed under the License are
+ * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER

  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.

  * 
  * @APPLE_LICENSE_HEADER_END@
  */
  * 
  * @APPLE_LICENSE_HEADER_END@
  */


@@ -83,9 +80,7 @@
 
 #include <kern/kern_types.h>
 #include <mach/mach_types.h>
 
 #include <kern/kern_types.h>
 #include <mach/mach_types.h>

-#include <vm/pmap.h>
-
-#ifdef __APPLE_API_PRIVATE
+#include <sys/cdefs.h>

 
 #ifdef MACH_KERNEL_PRIVATE
 
 
 #ifdef MACH_KERNEL_PRIVATE
 


@@ -96,19 +91,17 @@
 #include <mach/mach_param.h>
 #include <mach/task_info.h>
 #include <mach/exception_types.h>
 #include <mach/mach_param.h>
 #include <mach/task_info.h>
 #include <mach/exception_types.h>

-#include <mach_prof.h>
-#include <machine/task.h>
+
+#include <kern/cpu_data.h>

 #include <kern/queue.h>
 #include <kern/exception.h>
 #include <kern/lock.h>
 #include <kern/queue.h>
 #include <kern/exception.h>
 #include <kern/lock.h>

-#include <kern/syscall_emulation.h>
-#include <norma_task.h>
+#include <kern/thread.h>
+

 #include <mach_host.h>
 #include <mach_host.h>

-#include <fast_tas.h>
-#include <task_swapper.h>
-#include <kern/thread_act.h>
+#include <mach_prof.h>

 
 

-typedef struct task {
+struct task {

        /* Synchronization/destruction information */
        decl_mutex_data(,lock)          /* Task's lock */
        int             ref_count;      /* Number of references to me */
        /* Synchronization/destruction information */
        decl_mutex_data(,lock)          /* Task's lock */
        int             ref_count;      /* Number of references to me */


@@ -120,22 +113,9 @@ typedef struct task {
        void            *user_data;     /* Arbitrary data settable via IPC */
        int             suspend_count;  /* Internal scheduling only */
 
        void            *user_data;     /* Arbitrary data settable via IPC */
        int             suspend_count;  /* Internal scheduling only */
 

-#if    TASK_SWAPPER
-       /* Task swapper data */
-       unsigned short  swap_state;     /* swap state (e.g. IN/OUT) */
-       unsigned short  swap_flags;     /* swap flags (e.g. MAKE_UNSWAPP) */
-       unsigned int    swap_stamp;     /* when last swapped */
-       unsigned long   swap_rss;       /* size (pages) when last swapped */
-       int             swap_ast_waiting; /* number of threads that have not */
-                                         /* reached a clean point and halted */
-       int             swap_nswap;     /* number of times this task swapped */
-       queue_chain_t   swapped_tasks;  /* list of non-resident tasks */
-#endif /* TASK_SWAPPER */
-

        /* Threads in this task */
        queue_head_t    threads;
        int                             thread_count;
        /* Threads in this task */
        queue_head_t    threads;
        int                             thread_count;

-       int                             res_thread_count;

        int                             active_thread_count;
 
        processor_set_t processor_set;  /* processor set for new threads */
        int                             active_thread_count;
 
        processor_set_t processor_set;  /* processor set for new threads */


@@ -157,8 +137,8 @@ typedef struct task {
        audit_token_t   audit_token;
         
        /* Statistics */
        audit_token_t   audit_token;
         
        /* Statistics */

-       time_value_t    total_user_time;        /* user time for dead threads */
-       time_value_t    total_system_time;      /* system time for dead threads */
+       uint64_t                total_user_time;        /* terminated threads only */
+       uint64_t                total_system_time;

 
 #if    MACH_PROF
        boolean_t       task_profiled;  /* is task being profiled ? */
 
 #if    MACH_PROF
        boolean_t       task_profiled;  /* is task being profiled ? */


@@ -184,22 +164,12 @@ typedef struct task {
        int             semaphores_owned;       /* number of semaphores owned */
        int             lock_sets_owned;        /* number of lock sets owned  */
 
        int             semaphores_owned;       /* number of semaphores owned */
        int             lock_sets_owned;        /* number of lock sets owned  */
 

-       /* User space system call emulation support */
-       struct  eml_dispatch    *eml_dispatch;
-
-        /* Ledgers */
+       /* Ledgers */

        struct ipc_port *wired_ledger_port;
        struct ipc_port *paged_ledger_port;
        struct ipc_port *wired_ledger_port;
        struct ipc_port *paged_ledger_port;

-       unsigned long   priv_flags;     /* privelege resource flags */
+       unsigned int    priv_flags;                     /* privilege resource flags */
+#define VM_BACKING_STORE_PRIV  0x1

         
         

-#if    NORMA_TASK
-       long            child_node;     /* if != -1, node for new children */
-#endif /* NORMA_TASK */
-#if    FAST_TAS
-       vm_offset_t     fast_tas_base;
-       vm_offset_t     fast_tas_end;
-#endif /* FAST_TAS */
-       MACHINE_TASK

        integer_t faults;              /* faults counter */
         integer_t pageins;             /* pageins counter */
         integer_t cow_faults;          /* copy on write fault counter */
        integer_t faults;              /* faults counter */
         integer_t pageins;             /* pageins counter */
         integer_t cow_faults;          /* copy on write fault counter */


@@ -211,93 +181,129 @@ typedef struct task {
 #ifdef  MACH_BSD 
        void *bsd_info;
 #endif  
 #ifdef  MACH_BSD 
        void *bsd_info;
 #endif  

-       vm_offset_t     system_shared_region;
-       vm_offset_t     dynamic_working_set;
+       struct shared_region_mapping    *system_shared_region;
+       struct tws_hash                 *dynamic_working_set;

        uint32_t taskFeatures[2];               /* Special feature for this task */
 #define tf64BitAddr    0x80000000              /* Task has 64-bit addressing */
 #define tf64BitData    0x40000000              /* Task has 64-bit data registers */
        uint32_t taskFeatures[2];               /* Special feature for this task */
 #define tf64BitAddr    0x80000000              /* Task has 64-bit addressing */
 #define tf64BitData    0x40000000              /* Task has 64-bit data registers */

-} Task;
+#define task_has_64BitAddr(task)       \
+        (((task)->taskFeatures[0] & tf64BitAddr) != 0)
+#define task_set_64BitAddr(task)       \
+        ((task)->taskFeatures[0] |= tf64BitAddr)
+#define task_clear_64BitAddr(task)     \
+        ((task)->taskFeatures[0] &= ~tf64BitAddr)
+
+};

 
 #define task_lock(task)                mutex_lock(&(task)->lock)
 #define task_lock_try(task)    mutex_try(&(task)->lock)
 #define task_unlock(task)      mutex_unlock(&(task)->lock)
 
 
 #define task_lock(task)                mutex_lock(&(task)->lock)
 #define task_lock_try(task)    mutex_try(&(task)->lock)
 #define task_unlock(task)      mutex_unlock(&(task)->lock)
 

-#define        itk_lock_init(task)     mutex_init(&(task)->itk_lock_data, \
-                                          ETAP_THREAD_TASK_ITK)
+#define        itk_lock_init(task)     mutex_init(&(task)->itk_lock_data, 0)

 #define        itk_lock(task)          mutex_lock(&(task)->itk_lock_data)
 #define        itk_unlock(task)        mutex_unlock(&(task)->itk_lock_data)
 
 #define        itk_lock(task)          mutex_lock(&(task)->itk_lock_data)
 #define        itk_unlock(task)        mutex_unlock(&(task)->itk_lock_data)
 

-#define task_reference_locked(task) ((task)->ref_count++)
+#define task_reference_internal(task)          \
+                       hw_atomic_add(&(task)->ref_count, 1)

 
 

-/*
- *   priv_flags definitions
- */
-#define VM_BACKING_STORE_PRIV  0x1
+#define task_deallocate_internal(task)         \
+                       hw_atomic_sub(&(task)->ref_count, 1)

 
 

-/*
- *     Internal only routines
- */
+#define task_reference(task)                                   \
+MACRO_BEGIN                                                                            \
+       if ((task) != TASK_NULL)                                        \
+               task_reference_internal(task);                  \
+MACRO_END

 
 

-extern void task_backing_store_privileged(
-                               task_t task);
+extern kern_return_t   kernel_task_create(
+                                                       task_t                  task,
+                                                       vm_offset_t             map_base,
+                                                       vm_size_t               map_size,
+                                                       task_t                  *child);

 
 /* Initialize task module */
 extern void            task_init(void);
 
 
 /* Initialize task module */
 extern void            task_init(void);
 

-/* task create */
-extern kern_return_t   task_create_internal(
-                               task_t          parent_task,
-                               boolean_t       inherit_memory,
-                               task_t          *child_task);   /* OUT */
+#define        current_task_fast()     (current_thread()->task)
+#define current_task()         current_task_fast()

 
 

-extern void            consider_task_collect(void);
+#else  /* MACH_KERNEL_PRIVATE */

 
 

-#define        current_task_fast()     (current_act_fast()->task)
-#define current_task()         current_task_fast()
+__BEGIN_DECLS
+
+extern task_t  current_task(void);
+
+extern void            task_reference(task_t   task);
+
+__END_DECLS

 
 #endif /* MACH_KERNEL_PRIVATE */
 
 
 #endif /* MACH_KERNEL_PRIVATE */
 

-extern task_t          kernel_task;
+__BEGIN_DECLS
+
+#ifdef XNU_KERNEL_PRIVATE

 
 

-/* Temporarily hold all threads in a task */
+/* Hold all threads in a task */

 extern kern_return_t   task_hold(
 extern kern_return_t   task_hold(

-                               task_t  task);
+                                                       task_t          task);

 
 

-/* Release temporary hold on all threads in a task */
+/* Release hold on all threads in a task */

 extern kern_return_t   task_release(
 extern kern_return_t   task_release(

-                               task_t  task);
+                                                       task_t          task);

 
 

-/* Get a task prepared for major changes */
+/* Halt all other threads in the current task */

 extern kern_return_t   task_halt(
 extern kern_return_t   task_halt(

-                               task_t  task);
+                                                       task_t          task);
+
+extern kern_return_t   task_terminate_internal(
+                                                       task_t                  task);
+
+extern kern_return_t   task_create_internal(
+                                                       task_t          parent_task,
+                                                       boolean_t       inherit_memory,
+                                                       task_t          *child_task);   /* OUT */

 
 

-#if defined(MACH_KERNEL_PRIVATE) || defined(BSD_BUILD)

 extern kern_return_t   task_importance(
                                                        task_t                  task,
                                                        integer_t               importance);
 extern kern_return_t   task_importance(
                                                        task_t                  task,
                                                        integer_t               importance);

-#endif
+
+extern void            task_set_64bit(
+                                       task_t          task,
+                                       boolean_t       is64bit);
+
+extern void            task_backing_store_privileged(
+                                       task_t          task);
+
+extern void            task_working_set_disable(
+                                       task_t          task);
+
+/* Get number of activations in a task */
+extern int             get_task_numacts(
+                                       task_t          task);
+

 
 /* JMM - should just be temporary (implementation in bsd_kern still) */
 
 /* JMM - should just be temporary (implementation in bsd_kern still) */

-extern void    *get_bsdtask_info(task_t);

 extern void    set_bsdtask_info(task_t,void *);
 extern void    set_bsdtask_info(task_t,void *);

-extern vm_map_t get_task_map(task_t);
+extern vm_map_t get_task_map_reference(task_t);

 extern vm_map_t        swap_task_map(task_t, vm_map_t);
 extern pmap_t  get_task_pmap(task_t);
 
 extern vm_map_t        swap_task_map(task_t, vm_map_t);
 extern pmap_t  get_task_pmap(task_t);
 

-extern boolean_t       task_reference_try(task_t task);
+extern boolean_t       is_kerneltask(task_t task);

 
 

-#endif /* __APPLE_API_PRIVATE */
+#endif /* XNU_KERNEL_PRIVATE */

 
 

-#if            !defined(MACH_KERNEL_PRIVATE)
+#ifdef KERNEL_PRIVATE

 
 

-extern task_t  current_task(void);
+extern void    *get_bsdtask_info(task_t);
+extern vm_map_t get_task_map(task_t);

 
 

-#endif /* MACH_KERNEL_TASK */
+#endif /* KERNEL_PRIVATE */

 
 

-/* Take reference on task (make sure it doesn't go away) */
-extern void            task_reference(task_t   task);
+extern task_t  kernel_task;
+
+extern void            task_deallocate(
+                                       task_t          task);

 
 

-/* Remove reference to task */
-extern void            task_deallocate(task_t  task);
+__END_DECLS

 
 #endif /* _KERN_TASK_H_ */
 
 #endif /* _KERN_TASK_H_ */