318007/buf0buf.i.1

   1 typedef unsigned long int ulint;
   2 typedef long int lint;
   3 typedef struct rw_lock_struct rw_lock_t;
   4 struct rw_lock_struct {
   5         volatile lint lock_word;
   6         volatile ulint reader_count;
   7         volatile ulint writer;
   8 };
   9 static inline ulint rw_lock_x_lock_func_nowait(rw_lock_t * lock,
  10                                                const char *file_name,
  11                                                ulint line)
  12 {
  13         if (lock->reader_count == 0) {
  14                 if (__sync_lock_test_and_set(&(lock->writer), 351) == 350) {
  15                       retry_x_lock:if (__sync_sub_and_fetch(&(lock->lock_word), 0x00100000)
  16                             == 0) {
  17                                 if (__sync_fetch_and_add
  18                                     (&(lock->lock_word), 0x00100000) == 0)
  19                                         goto retry_x_lock;
  20                         }
  21                 }
  22         }
  23 }
  24
  25 typedef struct mtr_struct mtr_t;
  26 typedef struct buf_block_struct buf_block_t;
  27 typedef unsigned char buf_frame_t;
  28 struct buf_block_struct {
  29         rw_lock_t lock;
  30         struct {
  31         } awe_LRU_free_mapped;
  32 };
  33 buf_frame_t *buf_page_get_gen(ulint space, ulint offset, ulint rw_latch,
  34                               buf_frame_t * guess, ulint mode, const char *file,
  35                               ulint line, mtr_t * mtr)
  36 {
  37         buf_block_t *block;
  38         ulint success;
  39         if (mode == 12) {
  40                 if (rw_latch == 1) {
  41                         success =
  42                             rw_lock_x_lock_func_nowait(&(block->lock), file,
  43                                                        line);
  44                 }
  45         }
  46 }