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Diff for /libelwix/src/ring.c between versions 1.5.2.1 and 1.6

version 1.5.2.1, 2026/02/10 18:23:53 version 1.6, 2026/02/11 13:36:09
Line 329  lrb_isfull(lrbuf_t *lrb) Line 329  lrb_isfull(lrbuf_t *lrb)
 }  }
   
 /*  /*
    * lrb_getw() - Get address for write
    *
    * @lrb = Linear ring buffer
    * @len = Return available buffer length for write
    * return: NULL error or !=NULL pointer for write
    * remark: After use of lrb_getw() and write to pointer.
    *              You should update ring buffer with lrb_enqueue(,NULL,wrote_len,)
    */
   void *
   lrb_getw(lrbuf_t *lrb, size_t *len)
   {
           int h;
   
           if (!lrb || !lrb->lrb_data || !lrb->lrb_size)
                   return NULL;
   
           h = atomic_load_explicit((atomic_int*) &lrb->lrb_head, memory_order_relaxed);
           if (len)
                   *len = lrb->lrb_size - h;
   
           return (lrb->lrb_data + h);
   }
   
   /*
  * lrb_enqueue() - Enqueue data to buffer   * lrb_enqueue() - Enqueue data to buffer
  *   *
  * @lrb = Linear ring buffer   * @lrb = Linear ring buffer
Line 364  lrb_enqueue(lrbuf_t *lrb, void *data, size_t len, int  Line 388  lrb_enqueue(lrbuf_t *lrb, void *data, size_t len, int 
         h = atomic_load_explicit((atomic_int*) &lrb->lrb_head, memory_order_relaxed);          h = atomic_load_explicit((atomic_int*) &lrb->lrb_head, memory_order_relaxed);
         n = lrb->lrb_size - h;          n = lrb->lrb_size - h;
         if (len < n) {          if (len < n) {
                memcpy(lrb->lrb_data + h, data, len);                if (data)
                         memcpy(lrb->lrb_data + h, data, len);
                 n = h + len;                  n = h + len;
         } else {          } else {
                memcpy(lrb->lrb_data + h, data, n);                if (data) {
                memcpy(lrb->lrb_data, data + n, len - n);                        memcpy(lrb->lrb_data + h, data, n);
                         memcpy(lrb->lrb_data, data + n, len - n);
                 }
                 n = len - n;                  n = len - n;
         }          }
   
Line 387  lrb_enqueue(lrbuf_t *lrb, void *data, size_t len, int  Line 414  lrb_enqueue(lrbuf_t *lrb, void *data, size_t len, int 
                 t2 = atomic_load_explicit((atomic_int*) &lrb->lrb_tail, memory_order_acquire);                  t2 = atomic_load_explicit((atomic_int*) &lrb->lrb_tail, memory_order_acquire);
         atomic_store_explicit((atomic_int*) &lrb->lrb_full, (h == t2), memory_order_release);          atomic_store_explicit((atomic_int*) &lrb->lrb_full, (h == t2), memory_order_release);
         return 0;          return 0;
   }
   
   /*
    * lrb_getr() - Get address for read
    *
    * @lrb = Linear ring buffer
    * @len = Return available data length for read
    * return: NULL error or !=NULL pointer for read
    * remark: After use of lrb_getr() and read from pointer.
    *              You could update ring buffer with lrb_dequeue(,NULL,read_len)
    */
   void *
   lrb_getr(lrbuf_t *lrb, size_t *len)
   {
           int t;
   
           if (!lrb || !lrb->lrb_data || !lrb->lrb_size)
                   return NULL;
   
           t = atomic_load_explicit((atomic_int*) &lrb->lrb_tail, memory_order_acquire);
           if (len)
                   lrb_queued(lrb, *len);
   
           return (lrb->lrb_data + t);
 }  }
   
 /*  /*
Removed from v.1.5.2.1  
changed lines
  Added in v.1.6

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