Changeset 4c60255 in mainline for kernel/generic/include/proc/thread.h

Timestamp:

2007-01-29T17:59:25Z (18 years ago)

Author:

Martin Decky <martin@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

c27c988

Parents:

3802fcd

Message:

move thread_t to thread.h

File:

• kernel/generic/include/proc/thread.h (modified) (2 diffs)

kernel/generic/include/proc/thread.h

@@ -47 +47 @@
 
 #define THREAD_STACK_SIZE       STACK_SIZE
+#define THREAD_NAME_BUFLEN      20
 
 extern char *thread_states[];
@@ -54 +55 @@
 #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. */
+
+/** Thread structure. There is one per thread. */
+typedef 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_t;
 
 /** Thread list lock.