[libc]更新 libc timer id 分配方式 (#7744)

components/libc/compilers/common/ctime.c

@@ -877,6 +877,8 @@ RTM_EXPORT(rt_timespec_to_tick);
 
 #ifdef RT_USING_POSIX_TIMER
 
+#include <resource_id.h>
+
 #define ACTIVE 1
 #define NOT_ACTIVE 0
 
@@ -940,72 +942,9 @@ static void rtthread_timer_wrapper(void *timerobj)
 
 #define TIMER_ID_MAX 50
 static struct timer_obj *_g_timerid[TIMER_ID_MAX];
-static int timerid_idx = 0;
+static void *timer_id[TIMER_ID_MAX];
-RT_DEFINE_SPINLOCK(_timer_id_lock);
+static resource_id_t id_timer = RESOURCE_ID_INIT(TIMER_ID_MAX, timer_id);
 
-void timer_id_init(void)
-{
-    for (int i = 0; i < TIMER_ID_MAX; i++)
-    {
-        _g_timerid[i] = NULL;
-    }
-    timerid_idx = 0;
-}
-
-int timer_id_alloc(void)
-{
-    for (int i = 0; i < timerid_idx; i++)
-    {
-        if (_g_timerid[i] == NULL)
-            return i;
-    }
-    if (timerid_idx < TIMER_ID_MAX)
-    {
-        timerid_idx++;
-        return timerid_idx; /* todo */
-    }
-
-    return -1;
-}
-
-void timer_id_lock()
-{
-    rt_hw_spin_lock(&_timer_id_lock);
-}
-
-void timer_id_unlock()
-{
-    rt_hw_spin_unlock(&_timer_id_lock);
-}
-
-struct timer_obj *timer_id_get(rt_ubase_t timerid)
-{
-    struct timer_obj *timer;
-
-    if (timerid < 0 || timerid >= TIMER_ID_MAX)
-    {
-        return NULL;
-    }
-
-    timer_id_lock();
-    if (_g_timerid[timerid] == NULL)
-    {
-        timer_id_unlock();
-        LOG_E("can not find timer!");
-        return NULL;
-    }
-    timer = _g_timerid[timerid];
-    timer_id_unlock();
-    return timer;
-}
-
-int timer_id_put(int id)
-{
-    if (_g_timerid[id] == NULL)
-        return -1;
-    _g_timerid[id] = NULL;
-    return 0;
-}
 /**
  * @brief Create a per-process timer.
  *
@@ -1064,17 +1003,14 @@ int timer_create(clockid_t clockid, struct sigevent *evp, timer_t *timerid)
             rt_timer_init(&timer->timer, timername, rtthread_timer_wrapper, timer, 0, RT_TIMER_FLAG_ONE_SHOT | RT_TIMER_FLAG_SOFT_TIMER);
     }
 
-    timer_id_lock();
+    _timerid = resource_id_get(&id_timer);
-    _timerid = timer_id_alloc();
     if (_timerid < 0)
     {
-        timer_id_unlock();
         LOG_E("_timerid overflow!");
         return -1; /* todo:memory leak */
     }
     _g_timerid[_timerid] = timer;
     *timerid = (timer_t)(rt_ubase_t)_timerid;
-    timer_id_unlock();
 
     return 0;
 }
@@ -1098,17 +1034,14 @@ int timer_delete(timer_t timerid)
         return -1;
     }
 
-    timer_id_lock();
     if (_g_timerid[ktimerid] == NULL)
     {
-        timer_id_unlock();
         rt_set_errno(EINVAL);
         LOG_E("can not find timer!");
         return -1;
     }
     timer = _g_timerid[ktimerid];
-    timer_id_put(ktimerid);
+    resource_id_put(&id_timer, ktimerid);
-    timer_id_unlock();
     if (timer == RT_NULL)
     {
         rt_set_errno(EINVAL);
@@ -1162,7 +1095,7 @@ int timer_gettime(timer_t timerid, struct itimerspec *its)
     struct timer_obj *timer;
     rt_uint32_t seconds, nanoseconds;
 
-    timer = timer_id_get((rt_ubase_t)timerid);
+    timer = _g_timerid[(rt_ubase_t)timerid];
 
     if (timer == NULL)
     {
@@ -1241,7 +1174,8 @@ RTM_EXPORT(timer_gettime);
 int timer_settime(timer_t timerid, int flags, const struct itimerspec *value,
                   struct itimerspec *ovalue)
 {
-    struct timer_obj *timer = timer_id_get((rt_ubase_t)timerid);
+    struct timer_obj *timer;
+    timer = _g_timerid[(rt_ubase_t)timerid];
     if (timer == NULL ||
         value->it_interval.tv_nsec < 0 ||
         value->it_interval.tv_nsec >= NANOSECOND_PER_SECOND ||

components/libc/posix/Kconfig

@@ -57,6 +57,7 @@ config RT_USING_POSIX_CLOCK
 
 config RT_USING_POSIX_TIMER
     select RT_USING_TIMER_SOFT
+    select RT_USING_RESOURCE_ID
     bool "Enable timer APIs, timer_create()/timer_gettime() etc"
     default n
 

components/libc/posix/ipc/Kconfig

@@ -5,6 +5,7 @@ config RT_USING_POSIX_PIPE
     select RT_USING_POSIX_FS
     select RT_USING_POSIX_DEVIO
     select RT_USING_POSIX_POLL
+    select RT_USING_RESOURCE_ID
     default n
 
 config RT_USING_POSIX_PIPE_SIZE

components/utilities/Kconfig

@@ -221,6 +221,10 @@ config RT_USING_ADT
     default y if ARCH_MM_MMU
     default n
 
+config RT_USING_RESOURCE_ID
+    bool "Enable resource id"
+    default n
+
 source "$RTT_DIR/components/utilities/rt-link/Kconfig"
 
 endmenu

components/utilities/resource/SConscript

@@ -3,6 +3,6 @@ from building import *
 cwd     = GetCurrentDir()
 src     = Glob('*.c')
 CPPPATH = [cwd]
-group   = DefineGroup('Utilities', src, depend = ['RT_USING_POSIX_PIPE'], CPPPATH = CPPPATH)
+group   = DefineGroup('Utilities', src, depend = ['RT_USING_RESOURCE_ID'], CPPPATH = CPPPATH)
 
 Return('group')