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Diffstat (limited to 'nuttx/sched/os_internal.h')
| -rw-r--r-- | nuttx/sched/os_internal.h | 291 |
1 files changed, 0 insertions, 291 deletions
diff --git a/nuttx/sched/os_internal.h b/nuttx/sched/os_internal.h deleted file mode 100644 index 262a40ccc..000000000 --- a/nuttx/sched/os_internal.h +++ /dev/null @@ -1,291 +0,0 @@ -/**************************************************************************** - * sched/os_internal.h - * - * Copyright (C) 2007-2013 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <gnutt@nuttx.org> - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. 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. - * 3. Neither the name NuttX nor the names of its contributors may be - * used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "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 - * COPYRIGHT OWNER OR CONTRIBUTORS 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 __SCHED_OS_INTERNAL_H -#define __SCHED_OS_INTERNAL_H - -/**************************************************************************** - * Included Files - ****************************************************************************/ - -#include <nuttx/config.h> - -#include <sys/types.h> -#include <stdbool.h> -#include <queue.h> -#include <sched.h> - -#include <nuttx/kmalloc.h> - -/**************************************************************************** - * Pre-processor Definitions - ****************************************************************************/ - -/* OS CRASH CODES: All must lie in the range 0-99 */ - -enum os_crash_codes_e -{ - OSERR_NOERROR = 0, /* No error */ - OSERR_NOTIMPLEMENTED, /* Feature is not implemented */ - OSERR_INTERNAL, /* Internal logic error */ - OSERR_UNEXPECTEDISR, /* Received unexpected interrupt */ - OSERR_UNDEFINEDINSN, /* Undefined instruction */ - OSERR_ERREXCEPTION, /* Other CPU-detected errors */ - OSERR_OUTOFMEMORY, /* Insufficient memory */ - OSERR_OUTOFMESSAGES, /* Out of messages */ - OSERR_NOIDLETASK, /* There is no idle task */ - OSERR_MQNONEMPTYCOUNT, /* Expected waiter for non-empty queue */ - OSERR_MQNOTFULLCOUNT, /* Expected waiter for non-full queue */ - OSERR_MQNOWAITER, /* Expected a queue for the waiter */ - OSERR_BADWAITSEM, /* Already waiting for a semaphore */ - OSERR_BADMSGTYPE, /* Tried to free a bad message type */ - OSERR_FAILEDTOADDSIGNAL, /* Failed to add pending signal */ - OSERR_FAILEDTOREMOVESIGNAL, /* Failed to remove pending signal */ - OSERR_TIMEOUTNOTCB, /* Timed out, but not TCB registered */ - OSERR_NOPENDINGSIGNAL, /* Expected a signal to be pending */ - OSERR_BADDELETESTATE, /* Bad state in task deletion */ - OSERR_WDOGNOTFOUND, /* Active watchdog not found */ - OSERR_EXITFROMINTERRUPT, /* Interrupt code attempted to exit */ - OSERR_BADUNBLOCKSTATE, /* Attempt to unblock from bad state */ - OSERR_BADBLOCKSTATE, /* Attempt to block from bad state */ - OSERR_BADREPRIORITIZESTATE /* Attempt to reprioritize in bad state or priority */ -}; - -/* Special task IDS. Any negative PID is invalid. */ - -#define NULL_TASK_PROCESS_ID (pid_t)0 -#define INVALID_PROCESS_ID (pid_t)-1 - -/* Although task IDs can take the (positive, non-zero) - * range of pid_t, the number of tasks that will be supported - * at any one time is (artificially) limited by the CONFIG_MAX_TASKS - * configuration setting. Limiting the number of tasks speeds certain - * OS functions (this is the only limitation in the number of - * tasks built into the design). - */ - -#define MAX_TASKS_MASK (CONFIG_MAX_TASKS-1) -#define PIDHASH(pid) ((pid) & MAX_TASKS_MASK) - -/* One processor family supported by NuttX has a single, fixed hardware stack. - * That is the 8051 family. So for that family only, there is a variant form - * of kernel_thread() that does not take a stack size parameter. The following - * helper macro is provided to work around the ugliness of that exception. - */ - -#ifndef CONFIG_CUSTOM_STACK -# define KERNEL_THREAD(n,p,s,e,a) kernel_thread(n,p,s,e,a) -#else -# define KERNEL_THREAD(n,p,s,e,a) kernel_thread(n,p,e,a) -#endif - -/* A more efficient ways to access the errno */ - -#define SET_ERRNO(e) \ - { _TCB *rtcb = _TCB*)g_readytorun.head; rtcb->pterrno = (e); } - -#define _SET_TCB_ERRNO(t,e) \ - { (t)->pterrno = (e); } - -/**************************************************************************** - * Public Type Definitions - ****************************************************************************/ - -/* This structure defines the format of the hash table that - * is used to (1) determine if a task ID is unique, and (2) - * to map a process ID to its corresponding TCB. - */ - -struct pidhash_s -{ - FAR _TCB *tcb; - pid_t pid; -}; - -typedef struct pidhash_s pidhash_t; - -/* This structure defines an element of the g_tasklisttable[]. - * This table is used to map a task_state enumeration to the - * corresponding task list. - */ - -struct tasklist_s -{ - DSEG volatile dq_queue_t *list; /* Pointer to the task list */ - bool prioritized; /* true if the list is prioritized */ -}; - -typedef struct tasklist_s tasklist_t; - -/**************************************************************************** - * Global Variables - ****************************************************************************/ - -/* Declared in os_start.c ***************************************************/ - -/* The state of a task is indicated both by the task_state field of the TCB - * and by a series of task lists. All of these tasks lists are declared - * below. Although it is not always necessary, most of these lists are - * prioritized so that common list handling logic can be used (only the - * g_readytorun, the g_pendingtasks, and the g_waitingforsemaphore lists need - * to be prioritized). - */ - -/* This is the list of all tasks that are ready to run. The head of this - * list is the currently active task; the tail of this list is always the - * IDLE task. - */ - -extern volatile dq_queue_t g_readytorun; - -/* This is the list of all tasks that are ready-to-run, but cannot be placed - * in the g_readytorun list because: (1) They are higher priority than the - * currently active task at the head of the g_readytorun list, and (2) the - * currently active task has disabled pre-emption. - */ - -extern volatile dq_queue_t g_pendingtasks; - -/* This is the list of all tasks that are blocked waiting for a semaphore */ - -extern volatile dq_queue_t g_waitingforsemaphore; - -/* This is the list of all tasks that are blocked waiting for a signal */ - -#ifndef CONFIG_DISABLE_SIGNALS -extern volatile dq_queue_t g_waitingforsignal; -#endif - -/* This is the list of all tasks that are blocked waiting for a message - * queue to become non-empty. - */ - -#ifndef CONFIG_DISABLE_MQUEUE -extern volatile dq_queue_t g_waitingformqnotempty; -#endif - -/* This is the list of all tasks that are blocked waiting for a message - * queue to become non-full. - */ - -#ifndef CONFIG_DISABLE_MQUEUE -extern volatile dq_queue_t g_waitingformqnotfull; -#endif - -/* This is the list of all tasks that are blocking waiting for a page fill */ - -#ifdef CONFIG_PAGING -extern volatile dq_queue_t g_waitingforfill; -#endif - -/* This the list of all tasks that have been initialized, but not yet - * activated. NOTE: This is the only list that is not prioritized. - */ - -extern volatile dq_queue_t g_inactivetasks; - -/* This is the list of dayed memory deallocations that need to be handled - * within the IDLE loop. These deallocations get queued by sched_free() - * if the OS attempts to deallocate memory while it is within an interrupt - * handler. - */ - -extern volatile sq_queue_t g_delayeddeallocations; - -/* This is the value of the last process ID assigned to a task */ - -extern volatile pid_t g_lastpid; - -/* The following hash table is used for two things: - * - * 1. This hash table greatly speeds the determination of a new unique - * process ID for a task, and - * 2. Is used to quickly map a process ID into a TCB. - * - * It has the side effects of using more memory and limiting the number - * of tasks to CONFIG_MAX_TASKS. - */ - -extern pidhash_t g_pidhash[CONFIG_MAX_TASKS]; - -/* This is a table of task lists. This table is indexed by the task state - * enumeration type (tstate_t) and provides a pointer to the associated - * static task list (if there is one) as well as a boolean indication as to - * if the list is an ordered list or not. - */ - -extern const tasklist_t g_tasklisttable[NUM_TASK_STATES]; - -/**************************************************************************** - * Public Function Prototypes - ****************************************************************************/ - -int os_bringup(void); -#ifdef CONFIG_SCHED_CHILD_STATUS -void weak_function task_initialize(void); -#endif -void task_start(void); -int task_schedsetup(FAR _TCB *tcb, int priority, start_t start, - main_t main, uint8_t ttype); -int task_argsetup(FAR _TCB *tcb, FAR const char *name, FAR const char *argv[]); -void task_exithook(FAR _TCB *tcb, int status); -int task_deletecurrent(void); - -#ifndef CONFIG_CUSTOM_STACK -int kernel_thread(FAR const char *name, int priority, int stack_size, - main_t entry, FAR const char *argv[]); -#else -int kernel_thread(FAR const char *name, int priority, main_t entry, - FAR const char *argv[]); -#endif -bool sched_addreadytorun(FAR _TCB *rtrtcb); -bool sched_removereadytorun(FAR _TCB *rtrtcb); -bool sched_addprioritized(FAR _TCB *newTcb, DSEG dq_queue_t *list); -bool sched_mergepending(void); -void sched_addblocked(FAR _TCB *btcb, tstate_t task_state); -void sched_removeblocked(FAR _TCB *btcb); -int sched_setpriority(FAR _TCB *tcb, int sched_priority); -#ifdef CONFIG_PRIORITY_INHERITANCE -int sched_reprioritize(FAR _TCB *tcb, int sched_priority); -#else -# define sched_reprioritize(tcb,sched_priority) sched_setpriority(tcb,sched_priority) -#endif -FAR _TCB *sched_gettcb(pid_t pid); -bool sched_verifytcb(FAR _TCB *tcb); - -int sched_releasetcb(FAR _TCB *tcb); -void sched_garbagecollection(void); - -#endif /* __SCHED_OS_INTERNAL_H */ |