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提交 b1404421 编写于 作者: B bernard.xiong@gmail.com
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remove soft timer tick increase 

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2108 bbd45198-f89e-11dd-88c7-29a3b14d5316
上级 e01d425b
隐藏空白更改
内联 并排
Showing with 350 addition and 335 deletion
src/clock.c
浏览文件 @ b1404421
......@@ -59,10 +59,9 @@ rt_tick_t rt_tick_get(void)
void rt_tick_set(rt_tick_t tick)
{
rt_base_t level;
level = rt_hw_interrupt_disable();
level = rt_hw_interrupt_disable();
rt_tick = tick;
rt_hw_interrupt_enable(level);
}
......
src/memheap.c
浏览文件 @ b1404421
/*
* File : memheap.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2012, RT-Thread Development Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2012-04-10 Bernard first implementation
*/
#include <rtthread.h>
#ifdef RT_USING_MEMHEAP
/* dynamic pool magic and mask */
#define RT_MEMHEAP_MAGIC 0x1ea01ea0
#define RT_MEMHEAP_MASK 0xfffffffe
#define RT_MEMHEAP_USED 0x01
#define RT_MEMHEAP_FREED 0x00
#define RT_MEMHEAP_IS_USED(i) ((i)->magic & RT_MEMHEAP_USED)
#define RT_MEMHEAP_MINIALLOC 12
#define RT_MEMHEAP_SIZE RT_ALIGN(sizeof(struct rt_memheap_item), RT_ALIGN_SIZE)
/*
* The initialized memory pool will be:
* +-----------------------------------+--------------------------+
* | whole freed memory block | Used Memory Block Tailer |
* +-----------------------------------+--------------------------+
*
* block_list --> whole freed memory block
*
* The length of Used Memory Block Tailer is 0, which is prevents block merging across list
*/
rt_err_t rt_memheap_init(struct rt_memheap* memheap, const char* name,
void *start_addr,
rt_uint32_t size)
{
struct rt_memheap_item *item;
RT_ASSERT(memheap != RT_NULL);
/* initialize pool object */
rt_object_init(&(memheap->parent), RT_Object_Class_MemHeap, name);
memheap->start_addr = start_addr;
memheap->pool_size = RT_ALIGN_DOWN(size, RT_ALIGN_SIZE);
memheap->available_size = memheap->pool_size - (2 * RT_MEMHEAP_SIZE);
/* initialize the free list header */
item = &(memheap->free_header);
item->magic = RT_MEMHEAP_MAGIC;
item->pool_ptr = memheap;
item->next = RT_NULL;
item->prev = RT_NULL;
item->next_free = item;
item->prev_free = item;
/* set the free list to free list header */
memheap->free_list = item;
/* initialize the first big memory block */
item = (struct rt_memheap_item*) start_addr;
item->magic = RT_MEMHEAP_MAGIC;
item->pool_ptr = memheap;
item->next = RT_NULL;
item->prev = RT_NULL;
item->next_free = item;
item->prev_free = item;
item->next = (struct rt_memheap_item *)
((rt_uint8_t*) item + memheap->available_size + RT_MEMHEAP_SIZE);
item->prev = item->next;
/* block list header */
memheap->block_list = item;
/* place the big memory block to free list */
item->next_free = memheap->free_list->next_free;
item->prev_free = memheap->free_list;
memheap->free_list->next_free->prev_free = item;
memheap->free_list->next_free = item;
/* move to the end of memory pool to build a small tailer block, which prevents block merging */
item = item->next;
/* it's a used memory block */
item->magic = RT_MEMHEAP_MAGIC | RT_MEMHEAP_USED;
item->pool_ptr = memheap;
item->next = (struct rt_memheap_item *) start_addr;
item->prev = (struct rt_memheap_item *) start_addr;
/* not in free list */
item->next_free = item->prev_free = RT_NULL;
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("memory heap: start addr 0x%08x, size %d, free list header 0x%08x",
start_addr, size, &(memheap->free_header)));
return RT_EOK;
}
rt_err_t rt_memheap_detach(struct rt_memheap* heap)
{
rt_object_detach(&(heap->parent));
/* Return a successful completion. */
return RT_EOK;
}
void* rt_memheap_alloc(struct rt_memheap *pool_ptr, rt_uint32_t size)
{
rt_uint32_t free_size;
struct rt_memheap_item *header_ptr;
RT_ASSERT(pool_ptr != RT_NULL);
/* align allocated size */
size = RT_ALIGN(size, RT_ALIGN_SIZE);
if (size < RT_MEMHEAP_MINIALLOC) size = RT_MEMHEAP_MINIALLOC;
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("allocate %d", size));
if (size < pool_ptr->available_size)
{
/* search on free list */
free_size = 0;
/* get the first free memory block */
header_ptr = pool_ptr->free_list->next_free;
while (header_ptr != pool_ptr->free_list && free_size < size)
{
/* get current freed memory block size */
free_size = (rt_uint32_t)(header_ptr->next) - (rt_uint32_t)header_ptr - RT_MEMHEAP_SIZE;
if (free_size < size)
{
/* move to next free memory block */
header_ptr = header_ptr->next_free;
}
}
/* determine if the memory is available. */
if (free_size >= size)
{
/* a block that satisfies the request has been found. */
/* determine if the block needs to be split. */
if (free_size >= (size + RT_MEMHEAP_SIZE + RT_MEMHEAP_MINIALLOC))
{
struct rt_memheap_item* new_ptr;
/* split the block. */
new_ptr = (struct rt_memheap_item*) (((rt_uint8_t*) header_ptr) + size + RT_MEMHEAP_SIZE);
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("split: h[0x%08x] nm[0x%08x] pm[0x%08x] to n[0x%08x]", header_ptr,
header_ptr->next, header_ptr->prev,
new_ptr));
/* mark the new block as a memory block and freed. */
new_ptr->magic = RT_MEMHEAP_MAGIC;
/* put the pool pointer into the new block. */
new_ptr->pool_ptr = pool_ptr;
/* break down the block list */
new_ptr->prev = header_ptr;
new_ptr->next = header_ptr->next;
header_ptr->next->prev = new_ptr;
header_ptr->next = new_ptr;
/* remove header ptr from free list */
header_ptr->next_free->prev_free = header_ptr->prev_free;
header_ptr->prev_free->next_free = header_ptr->next_free;
header_ptr->next_free = RT_NULL;
header_ptr->prev_free = RT_NULL;
/* insert new_ptr to free list */
new_ptr->next_free = pool_ptr->free_list->next_free;
new_ptr->prev_free = pool_ptr->free_list;
pool_ptr->free_list->next_free->prev_free = new_ptr;
pool_ptr->free_list->next_free = new_ptr;
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("new ptr: nf 0x%08x, pf 0x%08x",
new_ptr->next_free, new_ptr->prev_free));
/* decrement the available byte count. */
pool_ptr->available_size = pool_ptr->available_size - size - RT_MEMHEAP_SIZE;
}
else
{
/* decrement the entire free size from the available bytes count. */
pool_ptr->available_size = pool_ptr->available_size - free_size;
/* remove header_ptr from free list */
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("one block: h[0x%08x], nf 0x%08x, pf 0x%08x", header_ptr,
header_ptr->next_free, header_ptr->prev_free));
header_ptr->next_free->prev_free = header_ptr->prev_free;
header_ptr->prev_free->next_free = header_ptr->next_free;
header_ptr->next_free = RT_NULL;
header_ptr->prev_free = RT_NULL;
}
/* Mark the allocated block as not available. */
header_ptr->magic |= RT_MEMHEAP_USED;
/* Return a memory address to the caller. */
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("am: m[0x%08x], h[0x%08x], size: %d",
(void*) ((rt_uint8_t*)header_ptr + RT_MEMHEAP_SIZE), header_ptr, size);
return (void*) ((rt_uint8_t*)header_ptr + RT_MEMHEAP_SIZE));
}
}
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("allocate memory: failed\n"));
/* Return the completion status. */
return RT_NULL;
}
void rt_memheap_free(void* ptr)
{
struct rt_memheap *pool_ptr;
struct rt_memheap_item *header_ptr, *new_ptr;
rt_uint32_t insert_header;
/* set initial status as OK */
insert_header = 1; new_ptr = RT_NULL;
header_ptr = (struct rt_memheap_item*)((rt_uint8_t*)ptr - RT_MEMHEAP_SIZE);
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("free memory: m[0x%08x], h[0x%08x]", ptr, header_ptr));
/* check magic */
RT_ASSERT((header_ptr->magic & RT_MEMHEAP_MASK) == RT_MEMHEAP_MAGIC);
/* get pool ptr */
pool_ptr = header_ptr->pool_ptr;
/* Mark the memory as available. */
header_ptr->magic &= ~RT_MEMHEAP_USED;
/* Adjust the available number of bytes. */
pool_ptr->available_size = pool_ptr->available_size +
((rt_uint32_t)(header_ptr->next) -
(rt_uint32_t)header_ptr) - RT_MEMHEAP_SIZE;
/* Determine if the block can be merged with the previous neighbor. */
if (!RT_MEMHEAP_IS_USED(header_ptr->prev))
{
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("merge: left node 0x%08x", header_ptr->prev));
/* adjust the available number of bytes. */
pool_ptr->available_size = pool_ptr->available_size + RT_MEMHEAP_SIZE;
/* yes, merge block with previous neighbor. */
(header_ptr->prev)->next = header_ptr->next;
(header_ptr->next)->prev = header_ptr->prev;
/* move header pointer to previous. */
header_ptr = header_ptr->prev;
insert_header = 0; /* don't insert header to free list */
}
/* determine if the block can be merged with the next neighbor. */
if (!RT_MEMHEAP_IS_USED(header_ptr->next))
{
/* adjust the available number of bytes. */
pool_ptr->available_size = pool_ptr->available_size + RT_MEMHEAP_SIZE;
/* merge block with next neighbor. */
new_ptr = header_ptr->next;
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("merge: right node 0x%08x, nf 0x%08x, pf 0x%08x",
new_ptr, new_ptr->next_free, new_ptr->prev_free));
new_ptr->next->prev = header_ptr;
header_ptr->next = new_ptr->next;
/* remove new ptr from free list */
new_ptr->next_free->prev_free = new_ptr->prev_free;
new_ptr->prev_free->next_free = new_ptr->next_free;
}
if (insert_header)
{
/* no left merge, insert to free list */
header_ptr->next_free = pool_ptr->free_list->next_free;
header_ptr->prev_free = pool_ptr->free_list;
pool_ptr->free_list->next_free->prev_free = header_ptr;
pool_ptr->free_list->next_free = header_ptr;
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("insert to free list: nf 0x%08x, pf 0x%08x",
header_ptr->next_free, header_ptr->prev_free));
}
}
#endif
/*
* File : memheap.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2012, RT-Thread Development Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2012-04-10 Bernard first implementation
*/
#include <rtthread.h>
#ifdef RT_USING_MEMHEAP
/* dynamic pool magic and mask */
#define RT_MEMHEAP_MAGIC 0x1ea01ea0
#define RT_MEMHEAP_MASK 0xfffffffe
#define RT_MEMHEAP_USED 0x01
#define RT_MEMHEAP_FREED 0x00
#define RT_MEMHEAP_IS_USED(i) ((i)->magic & RT_MEMHEAP_USED)
#define RT_MEMHEAP_MINIALLOC 12
#define RT_MEMHEAP_SIZE RT_ALIGN(sizeof(struct rt_memheap_item), RT_ALIGN_SIZE)
/*
* The initialized memory pool will be:
* +-----------------------------------+--------------------------+
* | whole freed memory block | Used Memory Block Tailer |
* +-----------------------------------+--------------------------+
*
* block_list --> whole freed memory block
*
* The length of Used Memory Block Tailer is 0, which is prevents block merging across list
*/
rt_err_t rt_memheap_init(struct rt_memheap* memheap, const char* name,
void *start_addr,
rt_uint32_t size)
{
struct rt_memheap_item *item;
RT_ASSERT(memheap != RT_NULL);
/* initialize pool object */
rt_object_init(&(memheap->parent), RT_Object_Class_MemHeap, name);
memheap->start_addr = start_addr;
memheap->pool_size = RT_ALIGN_DOWN(size, RT_ALIGN_SIZE);
memheap->available_size = memheap->pool_size - (2 * RT_MEMHEAP_SIZE);
/* initialize the free list header */
item = &(memheap->free_header);
item->magic = RT_MEMHEAP_MAGIC;
item->pool_ptr = memheap;
item->next = RT_NULL;
item->prev = RT_NULL;
item->next_free = item;
item->prev_free = item;
/* set the free list to free list header */
memheap->free_list = item;
/* initialize the first big memory block */
item = (struct rt_memheap_item*) start_addr;
item->magic = RT_MEMHEAP_MAGIC;
item->pool_ptr = memheap;
item->next = RT_NULL;
item->prev = RT_NULL;
item->next_free = item;
item->prev_free = item;
item->next = (struct rt_memheap_item *)
((rt_uint8_t*) item + memheap->available_size + RT_MEMHEAP_SIZE);
item->prev = item->next;
/* block list header */
memheap->block_list = item;
/* place the big memory block to free list */
item->next_free = memheap->free_list->next_free;
item->prev_free = memheap->free_list;
memheap->free_list->next_free->prev_free = item;
memheap->free_list->next_free = item;
/* move to the end of memory pool to build a small tailer block, which prevents block merging */
item = item->next;
/* it's a used memory block */
item->magic = RT_MEMHEAP_MAGIC | RT_MEMHEAP_USED;
item->pool_ptr = memheap;
item->next = (struct rt_memheap_item *) start_addr;
item->prev = (struct rt_memheap_item *) start_addr;
/* not in free list */
item->next_free = item->prev_free = RT_NULL;
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("memory heap: start addr 0x%08x, size %d, free list header 0x%08x",
start_addr, size, &(memheap->free_header)));
return RT_EOK;
}
rt_err_t rt_memheap_detach(struct rt_memheap* heap)
{
rt_object_detach(&(heap->parent));
/* Return a successful completion. */
return RT_EOK;
}
void* rt_memheap_alloc(struct rt_memheap *pool_ptr, rt_uint32_t size)
{
rt_uint32_t free_size;
struct rt_memheap_item *header_ptr;
RT_ASSERT(pool_ptr != RT_NULL);
/* align allocated size */
size = RT_ALIGN(size, RT_ALIGN_SIZE);
if (size < RT_MEMHEAP_MINIALLOC) size = RT_MEMHEAP_MINIALLOC;
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("allocate %d", size));
if (size < pool_ptr->available_size)
{
/* search on free list */
free_size = 0;
/* get the first free memory block */
header_ptr = pool_ptr->free_list->next_free;
while (header_ptr != pool_ptr->free_list && free_size < size)
{
/* get current freed memory block size */
free_size = (rt_uint32_t)(header_ptr->next) - (rt_uint32_t)header_ptr - RT_MEMHEAP_SIZE;
if (free_size < size)
{
/* move to next free memory block */
header_ptr = header_ptr->next_free;
}
}
/* determine if the memory is available. */
if (free_size >= size)
{
/* a block that satisfies the request has been found. */
/* determine if the block needs to be split. */
if (free_size >= (size + RT_MEMHEAP_SIZE + RT_MEMHEAP_MINIALLOC))
{
struct rt_memheap_item* new_ptr;
/* split the block. */
new_ptr = (struct rt_memheap_item*) (((rt_uint8_t*) header_ptr) + size + RT_MEMHEAP_SIZE);
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("split: h[0x%08x] nm[0x%08x] pm[0x%08x] to n[0x%08x]", header_ptr,
header_ptr->next, header_ptr->prev,
new_ptr));
/* mark the new block as a memory block and freed. */
new_ptr->magic = RT_MEMHEAP_MAGIC;
/* put the pool pointer into the new block. */
new_ptr->pool_ptr = pool_ptr;
/* break down the block list */
new_ptr->prev = header_ptr;
new_ptr->next = header_ptr->next;
header_ptr->next->prev = new_ptr;
header_ptr->next = new_ptr;
/* remove header ptr from free list */
header_ptr->next_free->prev_free = header_ptr->prev_free;
header_ptr->prev_free->next_free = header_ptr->next_free;
header_ptr->next_free = RT_NULL;
header_ptr->prev_free = RT_NULL;
/* insert new_ptr to free list */
new_ptr->next_free = pool_ptr->free_list->next_free;
new_ptr->prev_free = pool_ptr->free_list;
pool_ptr->free_list->next_free->prev_free = new_ptr;
pool_ptr->free_list->next_free = new_ptr;
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("new ptr: nf 0x%08x, pf 0x%08x",
new_ptr->next_free, new_ptr->prev_free));
/* decrement the available byte count. */
pool_ptr->available_size = pool_ptr->available_size - size - RT_MEMHEAP_SIZE;
}
else
{
/* decrement the entire free size from the available bytes count. */
pool_ptr->available_size = pool_ptr->available_size - free_size;
/* remove header_ptr from free list */
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("one block: h[0x%08x], nf 0x%08x, pf 0x%08x", header_ptr,
header_ptr->next_free, header_ptr->prev_free));
header_ptr->next_free->prev_free = header_ptr->prev_free;
header_ptr->prev_free->next_free = header_ptr->next_free;
header_ptr->next_free = RT_NULL;
header_ptr->prev_free = RT_NULL;
}
/* Mark the allocated block as not available. */
header_ptr->magic |= RT_MEMHEAP_USED;
/* Return a memory address to the caller. */
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("am: m[0x%08x], h[0x%08x], size: %d",
(void*) ((rt_uint8_t*)header_ptr + RT_MEMHEAP_SIZE), header_ptr, size);
return (void*) ((rt_uint8_t*)header_ptr + RT_MEMHEAP_SIZE));
}
}
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("allocate memory: failed\n"));
/* Return the completion status. */
return RT_NULL;
}
void rt_memheap_free(void* ptr)
{
struct rt_memheap *pool_ptr;
struct rt_memheap_item *header_ptr, *new_ptr;
rt_uint32_t insert_header;
/* set initial status as OK */
insert_header = 1; new_ptr = RT_NULL;
header_ptr = (struct rt_memheap_item*)((rt_uint8_t*)ptr - RT_MEMHEAP_SIZE);
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("free memory: m[0x%08x], h[0x%08x]", ptr, header_ptr));
/* check magic */
RT_ASSERT((header_ptr->magic & RT_MEMHEAP_MASK) == RT_MEMHEAP_MAGIC);
/* get pool ptr */
pool_ptr = header_ptr->pool_ptr;
/* Mark the memory as available. */
header_ptr->magic &= ~RT_MEMHEAP_USED;
/* Adjust the available number of bytes. */
pool_ptr->available_size = pool_ptr->available_size +
((rt_uint32_t)(header_ptr->next) -
(rt_uint32_t)header_ptr) - RT_MEMHEAP_SIZE;
/* Determine if the block can be merged with the previous neighbor. */
if (!RT_MEMHEAP_IS_USED(header_ptr->prev))
{
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("merge: left node 0x%08x", header_ptr->prev));
/* adjust the available number of bytes. */
pool_ptr->available_size = pool_ptr->available_size + RT_MEMHEAP_SIZE;
/* yes, merge block with previous neighbor. */
(header_ptr->prev)->next = header_ptr->next;
(header_ptr->next)->prev = header_ptr->prev;
/* move header pointer to previous. */
header_ptr = header_ptr->prev;
insert_header = 0; /* don't insert header to free list */
}
/* determine if the block can be merged with the next neighbor. */
if (!RT_MEMHEAP_IS_USED(header_ptr->next))
{
/* adjust the available number of bytes. */
pool_ptr->available_size = pool_ptr->available_size + RT_MEMHEAP_SIZE;
/* merge block with next neighbor. */
new_ptr = header_ptr->next;
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("merge: right node 0x%08x, nf 0x%08x, pf 0x%08x",
new_ptr, new_ptr->next_free, new_ptr->prev_free));
new_ptr->next->prev = header_ptr;
header_ptr->next = new_ptr->next;
/* remove new ptr from free list */
new_ptr->next_free->prev_free = new_ptr->prev_free;
new_ptr->prev_free->next_free = new_ptr->next_free;
}
if (insert_header)
{
/* no left merge, insert to free list */
header_ptr->next_free = pool_ptr->free_list->next_free;
header_ptr->prev_free = pool_ptr->free_list;
pool_ptr->free_list->next_free->prev_free = header_ptr;
pool_ptr->free_list->next_free = header_ptr;
RT_DEBUG_LOG(RT_DEBUG_MEMHEAP, ("insert to free list: nf 0x%08x, pf 0x%08x",
header_ptr->next_free, header_ptr->prev_free));
}
}
#endif
src/timer.c
浏览文件 @ b1404421
......@@ -28,6 +28,9 @@ static rt_list_t rt_timer_list = RT_LIST_OBJECT_INIT(rt_timer_list);
#ifdef RT_USING_TIMER_SOFT
/* soft timer list */
static rt_list_t rt_soft_timer_list;
static struct rt_thread timer_thread;
ALIGN(RT_ALIGN_SIZE)
static rt_uint8_t timer_thread_stack[RT_TIMER_THREAD_STACK_SIZE];
#endif
#ifdef RT_USING_HOOK
......@@ -75,6 +78,15 @@ static void _rt_timer_init(rt_timer_t timer,
rt_list_init(&(timer->list));
}
static rt_tick_t rt_timer_list_next_timeout(rt_list_t* timer_list)
{
struct rt_timer* timer;
if (rt_list_isempty(timer_list)) return RT_TICK_MAX;
timer = rt_list_entry(timer_list->next, struct rt_timer, list);
return timer->timeout_tick;
}
/**
* @addtogroup Clock
*/
......@@ -211,13 +223,13 @@ rt_err_t rt_timer_start(rt_timer_t timer)
RT_OBJECT_HOOK_CALL(rt_object_take_hook, (&(timer->parent)));
/* disable interrupt */
level = rt_hw_interrupt_disable();
/* get timeout tick, the max timeout tick shall not great than RT_TICK_MAX/2 */
RT_ASSERT(timer->init_tick < RT_TICK_MAX/2);
timer->timeout_tick = rt_tick_get() + timer->init_tick;
/* disable interrupt */
level = rt_hw_interrupt_disable();
#ifdef RT_USING_TIMER_SOFT
if (timer->parent.flag & RT_TIMER_FLAG_SOFT_TIMER)
{
......@@ -249,12 +261,25 @@ rt_err_t rt_timer_start(rt_timer_t timer)
{
rt_list_insert_before(n, &(timer->list));
}
timer->parent.flag |= RT_TIMER_FLAG_ACTIVATED;
/* enable interrupt */
rt_hw_interrupt_enable(level);
#ifdef RT_USING_TIMER_SOFT
if (timer->parent.flag & RT_TIMER_FLAG_SOFT_TIMER)
{
/* check whether timer thread is ready */
if (timer_thread.stat != RT_THREAD_READY)
{
/* resume timer thread to check soft timer */
rt_thread_resume(&timer_thread);
rt_schedule();
}
}
#endif
return -RT_EOK;
}
......@@ -279,15 +304,15 @@ rt_err_t rt_timer_stop(rt_timer_t timer)
/* disable interrupt */
level = rt_hw_interrupt_disable();
/* change stat */
timer->parent.flag &= ~RT_TIMER_FLAG_ACTIVATED;
/* remove it from timer list */
rt_list_remove(&(timer->list));
/* enable interrupt */
rt_hw_interrupt_enable(level);
/* change stat */
timer->parent.flag &= ~RT_TIMER_FLAG_ACTIVATED;
return RT_EOK;
}
......@@ -333,9 +358,6 @@ rt_err_t rt_timer_control(rt_timer_t timer, rt_uint8_t cmd, void *arg)
*
* @note this function shall be invoked in operating system timer interrupt.
*/
#ifdef RT_USING_TIMER_SOFT
void rt_soft_timer_tick_increase(void);
#endif
void rt_timer_check(void)
{
struct rt_timer *t;
......@@ -391,32 +413,20 @@ void rt_timer_check(void)
/* enable interrupt */
rt_hw_interrupt_enable(level);
/* increase soft timer tick */
#ifdef RT_USING_TIMER_SOFT
rt_soft_timer_tick_increase();
#endif
RT_DEBUG_LOG(RT_DEBUG_TIMER, ("timer check leave\n"));
}
#ifdef RT_USING_TIMER_SOFT
static struct rt_thread timer_thread;
ALIGN(RT_ALIGN_SIZE)
static rt_uint8_t timer_thread_stack[RT_TIMER_THREAD_STACK_SIZE];
static struct rt_semaphore timer_sem;
static rt_uint16_t timer_ex_cnt;
void rt_soft_timer_tick_increase(void)
/**
* This function will return the next timeout tick in the system.
*
* @return the next timeout tick in the system
*/
rt_tick_t rt_timer_next_timeout_tick(void)
{
timer_ex_cnt ++;
if (timer_ex_cnt >= (RT_TICK_PER_SECOND / RT_TIMER_TICK_PER_SECOND))
{
timer_ex_cnt = 0;
rt_sem_release(&timer_sem);
}
return rt_timer_list_next_timeout(&rt_timer_list);
}
#ifdef RT_USING_TIMER_SOFT
/**
* This function will check timer list, if a timeout event happens, the
* corresponding timeout function will be invoked.
......@@ -469,8 +479,7 @@ void rt_soft_timer_check(void)
t->parent.flag &= ~RT_TIMER_FLAG_ACTIVATED;
}
}
else
break; /* not check anymore */
else break; /* not check anymore */
}
RT_DEBUG_LOG(RT_DEBUG_TIMER, ("software timer check leave\n"));
......@@ -479,17 +488,25 @@ void rt_soft_timer_check(void)
/* system timer thread entry */
static void rt_thread_timer_entry(void *parameter)
{
rt_tick_t next_timeout;
while (1)
{
/* take software timer semaphore */
rt_sem_take(&timer_sem, RT_WAITING_FOREVER);
next_timeout = rt_timer_list_next_timeout(&rt_soft_timer_list);
if (next_timeout == RT_TICK_MAX)
{
rt_thread_suspend(rt_thread_self());
rt_schedule();
}
else
{
rt_thread_delay(next_timeout);
}
/* lock scheduler */
rt_enter_critical();
/* check software timer */
rt_soft_timer_check();
/* unlock scheduler */
rt_exit_critical();
}
......@@ -517,7 +534,6 @@ void rt_system_timer_thread_init(void)
{
#ifdef RT_USING_TIMER_SOFT
rt_list_init(&rt_soft_timer_list);
rt_sem_init(&timer_sem, "timer", 0, RT_IPC_FLAG_FIFO);
/* start software timer thread */
rt_thread_init(&timer_thread,
......
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