/tags/0.2.0.1/kernel/trunk/generic/include/proc/thread.h |
---|
0,0 → 1,187 |
/* |
* Copyright (C) 2001-2004 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __THREAD_H__ |
#define __THREAD_H__ |
#include <arch/proc/thread.h> |
#include <synch/spinlock.h> |
#include <arch/context.h> |
#include <fpu_context.h> |
#include <arch/types.h> |
#include <typedefs.h> |
#include <time/timeout.h> |
#include <synch/rwlock.h> |
#include <synch/synch.h> |
#include <config.h> |
#include <adt/btree.h> |
#include <adt/list.h> |
#include <mm/slab.h> |
#include <proc/uarg.h> |
#define THREAD_STACK_SIZE STACK_SIZE |
/**< Thread states. */ |
enum state { |
Invalid, /**< It is an error, if thread is found in this state. */ |
Running, /**< State of a thread that is currently executing on some CPU. */ |
Sleeping, /**< Thread in this state is waiting for an event. */ |
Ready, /**< State of threads in a run queue. */ |
Entering, /**< Threads are in this state before they are first readied. */ |
Exiting, /**< After a thread calls thread_exit(), it is put into Exiting state. */ |
Undead /**< Threads that were not detached but exited are in the Undead state. */ |
}; |
extern char *thread_states[]; |
/**< Join types. */ |
typedef enum { |
None, |
TaskClnp, /**< The thread will be joined by ktaskclnp thread. */ |
TaskGC /**< The thread will be joined by ktaskgc thread. */ |
} thread_join_type_t; |
#define X_WIRED (1<<0) |
#define X_STOLEN (1<<1) |
#define THREAD_NAME_BUFLEN 20 |
/** Thread structure. There is one per thread. */ |
struct thread { |
link_t rq_link; /**< Run queue link. */ |
link_t wq_link; /**< Wait queue link. */ |
link_t th_link; /**< Links to threads within containing task. */ |
/** Lock protecting thread structure. |
* |
* Protects the whole thread structure except list links above. |
*/ |
SPINLOCK_DECLARE(lock); |
char name[THREAD_NAME_BUFLEN]; |
void (* thread_code)(void *); /**< Function implementing the thread. */ |
void *thread_arg; /**< Argument passed to thread_code() function. */ |
/** From here, the stored context is restored when the thread is scheduled. */ |
context_t saved_context; |
/** From here, the stored timeout context is restored when sleep times out. */ |
context_t sleep_timeout_context; |
/** From here, the stored interruption context is restored when sleep is interrupted. */ |
context_t sleep_interruption_context; |
bool sleep_interruptible; /**< If true, the thread can be interrupted from sleep. */ |
waitq_t *sleep_queue; /**< Wait queue in which this thread sleeps. */ |
timeout_t sleep_timeout; /**< Timeout used for timeoutable sleeping. */ |
volatile int timeout_pending; /**< Flag signalling sleep timeout in progress. */ |
/** True if this thread is executing copy_from_uspace(). False otherwise. */ |
bool in_copy_from_uspace; |
/** True if this thread is executing copy_to_uspace(). False otherwise. */ |
bool in_copy_to_uspace; |
/** |
* If true, the thread will not go to sleep at all and will |
* call thread_exit() before returning to userspace. |
*/ |
bool interrupted; |
thread_join_type_t join_type; /**< Who joinins the thread. */ |
bool detached; /**< If true, thread_join_timeout() cannot be used on this thread. */ |
waitq_t join_wq; /**< Waitq for thread_join_timeout(). */ |
fpu_context_t *saved_fpu_context; |
int fpu_context_exists; |
/* |
* Defined only if thread doesn't run. |
* It means that fpu context is in CPU that last time executes this thread. |
* This disables migration |
*/ |
int fpu_context_engaged; |
rwlock_type_t rwlock_holder_type; |
void (* call_me)(void *); /**< Funtion to be called in scheduler before the thread is put asleep. */ |
void *call_me_with; /**< Argument passed to call_me(). */ |
state_t state; /**< Thread's state. */ |
int flags; /**< Thread's flags. */ |
cpu_t *cpu; /**< Thread's CPU. */ |
task_t *task; /**< Containing task. */ |
__u64 ticks; /**< Ticks before preemption. */ |
int priority; /**< Thread's priority. Implemented as index to CPU->rq */ |
__u32 tid; /**< Thread ID. */ |
thread_arch_t arch; /**< Architecture-specific data. */ |
__u8 *kstack; /**< Thread's kernel stack. */ |
}; |
/** Thread list lock. |
* |
* This lock protects all link_t structures chained in threads_head. |
* Must be acquired before T.lock for each T of type thread_t. |
* |
*/ |
extern spinlock_t threads_lock; |
extern btree_t threads_btree; /**< B+tree containing all threads. */ |
extern void thread_init(void); |
extern thread_t *thread_create(void (* func)(void *), void *arg, task_t *task, int flags, char *name); |
extern void thread_ready(thread_t *t); |
extern void thread_exit(void) __attribute__((noreturn)); |
#ifndef thread_create_arch |
extern void thread_create_arch(thread_t *t); |
#endif |
extern void thread_sleep(__u32 sec); |
extern void thread_usleep(__u32 usec); |
#define thread_join(t) thread_join_timeout((t), SYNCH_NO_TIMEOUT, SYNCH_FLAGS_NONE) |
extern int thread_join_timeout(thread_t *t, __u32 usec, int flags); |
extern void thread_detach(thread_t *t); |
extern void thread_register_call_me(void (* call_me)(void *), void *call_me_with); |
extern void thread_print_list(void); |
extern void thread_destroy(thread_t *t); |
extern bool thread_exists(thread_t *t); |
/* Fpu context slab cache */ |
extern slab_cache_t *fpu_context_slab; |
/** Thread syscall prototypes. */ |
__native sys_thread_create(uspace_arg_t *uspace_uarg, char *uspace_name); |
__native sys_thread_exit(int uspace_status); |
#endif |
/tags/0.2.0.1/kernel/trunk/generic/include/proc/task.h |
---|
0,0 → 1,101 |
/* |
* Copyright (C) 2001-2004 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __TASK_H__ |
#define __TASK_H__ |
#include <typedefs.h> |
#include <synch/spinlock.h> |
#include <synch/mutex.h> |
#include <synch/futex.h> |
#include <adt/btree.h> |
#include <adt/list.h> |
#include <ipc/ipc.h> |
#include <security/cap.h> |
#include <arch/proc/task.h> |
/** Task structure. */ |
struct task { |
/** Task lock. |
* |
* Must be acquired before threads_lock and thread lock of any of its threads. |
*/ |
SPINLOCK_DECLARE(lock); |
char *name; |
thread_t *main_thread; /**< Pointer to the main thread. */ |
link_t th_head; /**< List of threads contained in this task. */ |
as_t *as; /**< Address space. */ |
task_id_t taskid; /**< Unique identity of task */ |
/** If this is true, new threads can become part of the task. */ |
bool accept_new_threads; |
count_t refcount; /**< Number of references (i.e. threads). */ |
cap_t capabilities; /**< Task capabilities. */ |
/* IPC stuff */ |
answerbox_t answerbox; /**< Communication endpoint */ |
phone_t phones[IPC_MAX_PHONES]; |
atomic_t active_calls; /**< Active asynchronous messages. |
* It is used for limiting uspace to |
* certain extent. */ |
task_arch_t arch; /**< Architecture specific task data. */ |
/** |
* Serializes access to the B+tree of task's futexes. This mutex is |
* independent on the task spinlock. |
*/ |
mutex_t futexes_lock; |
btree_t futexes; /**< B+tree of futexes referenced by this task. */ |
}; |
extern spinlock_t tasks_lock; |
extern btree_t tasks_btree; |
extern void task_init(void); |
extern task_t *task_create(as_t *as, char *name); |
extern void task_destroy(task_t *t); |
extern task_t *task_run_program(void *program_addr, char *name); |
extern task_t *task_find_by_id(task_id_t id); |
extern int task_kill(task_id_t id); |
#ifndef task_create_arch |
extern void task_create_arch(task_t *t); |
#endif |
#ifndef task_destroy_arch |
extern void task_destroy_arch(task_t *t); |
#endif |
extern __native sys_task_get_id(task_id_t *uspace_task_id); |
#endif |
/tags/0.2.0.1/kernel/trunk/generic/include/proc/scheduler.h |
---|
0,0 → 1,64 |
/* |
* Copyright (C) 2001-2004 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __SCHEDULER_H__ |
#define __SCHEDULER_H__ |
#include <synch/spinlock.h> |
#include <time/clock.h> /* HZ */ |
#include <typedefs.h> |
#include <atomic.h> |
#include <adt/list.h> |
#define RQ_COUNT 16 |
#define NEEDS_RELINK_MAX (HZ) |
/** Scheduler run queue structure. */ |
struct runq { |
SPINLOCK_DECLARE(lock); |
link_t rq_head; /**< List of ready threads. */ |
count_t n; /**< Number of threads in rq_ready. */ |
}; |
extern atomic_t nrdy; |
extern void scheduler_init(void); |
extern void scheduler_fpu_lazy_request(void); |
extern void scheduler(void); |
extern void kcpulb(void *arg); |
extern void sched_print_list(void); |
/* |
* To be defined by architectures: |
*/ |
extern void before_task_runs_arch(void); |
extern void before_thread_runs_arch(void); |
extern void after_thread_ran_arch(void); |
#endif |
/tags/0.2.0.1/kernel/trunk/generic/include/proc/uarg.h |
---|
0,0 → 1,43 |
/* |
* Copyright (C) 2006 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __UARG_H__ |
#define __UARG_H__ |
/** Structure passed to uinit kernel thread as argument. */ |
typedef struct uspace_arg { |
void *uspace_entry; |
void *uspace_stack; |
void (* uspace_thread_function)(); |
void *uspace_thread_arg; |
struct uspace_arg *uspace_uarg; |
} uspace_arg_t; |
#endif |