| 35,129 → 35,25 |
|---|
| #ifndef KERN_THREAD_H_ |
| #define KERN_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/waitq.h> |
| #include <proc/task.h> |
| #include <cpu.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 <arch/cpu.h> |
| #include <mm/tlb.h> |
| #include <proc/uarg.h> |
| |
| #define THREAD_STACK_SIZE STACK_SIZE |
| |
| /** Thread states. */ |
| typedef enum { |
| 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. */ |
| } state_t; |
| |
| 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; |
| |
| /* Thread flags */ |
| #define THREAD_FLAG_WIRED (1<<0) /**< Thread cannot be migrated to another CPU. */ |
| #define THREAD_FLAG_STOLEN (1<<1) /**< Thread was migrated to another CPU and has not run yet. */ |
| #define THREAD_FLAG_USPACE (1<<2) /**< Thread executes in userspace. */ |
| #define THREAD_FLAG_WIRED (1 << 0) /**< Thread cannot be migrated to another CPU. */ |
| #define THREAD_FLAG_STOLEN (1 << 1) /**< Thread was migrated to another CPU and has not run yet. */ |
| #define THREAD_FLAG_USPACE (1 << 2) /**< Thread executes in userspace. */ |
| |
| #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. */ |
| |
| uint64_t ticks; /**< Ticks before preemption. */ |
| |
| uint64_t cycles; /**< Thread accounting. */ |
| uint64_t last_cycle; /**< Last sampled cycle. */ |
| bool uncounted; /**< Thread doesn't affect accumulated accounting. */ |
| |
| int priority; /**< Thread's priority. Implemented as index to CPU->rq */ |
| uint32_t tid; /**< Thread ID. */ |
| |
| thread_arch_t arch; /**< Architecture-specific data. */ |
| |
| uint8_t *kstack; /**< Thread's kernel stack. */ |
| }; |
| |
| /** Thread list lock. |
| * |
| * This lock protects all link_t structures chained in threads_head. |
| 195,6 → 91,7 |
|---|
| extern void thread_destroy(thread_t *t); |
| extern void thread_update_accounting(void); |
| extern bool thread_exists(thread_t *t); |
| extern void thread_interrupt_sleep(thread_t *t); |
| |
| /* Fpu context slab cache */ |
| extern slab_cache_t *fpu_context_slab; |