linux-2.6.33/wait_on_bit() の履歴(No.1)

• 履歴一覧
• 差分 を表示
• 現在との差分 を表示
• ソース を表示
• linux-2.6.33/wait_on_bit() へ行く。
  • 1 (2012-10-05 (金) 11:52:25)

参照元†

• linux-2.6.33/__wait_on_buffer()

説明†

• パス: [[linux-2.6.33/]]

• FIXME: これは何？
  • 説明

引数†

• void *word
• int bit
• int (*action)(void *)
• unsigned mode

返り値†

• int

参考†

実装†

/**
 * wait_on_bit - wait for a bit to be cleared
 * @word: the word being waited on, a kernel virtual address
 * @bit: the bit of the word being waited on
 * @action: the function used to sleep, which may take special actions
 * @mode: the task state to sleep in
 *
 * There is a standard hashed waitqueue table for generic use. This
 * is the part of the hashtable's accessor API that waits on a bit.
 * For instance, if one were to have waiters on a bitflag, one would
 * call wait_on_bit() in threads waiting for the bit to clear.
 * One uses wait_on_bit() where one is waiting for the bit to clear,
 * but has no intention of setting it.
 */
static inline int wait_on_bit(void *word, int bit,
				int (*action)(void *), unsigned mode)
{
	if (!test_bit(bit, word))

• • linux-2.6.33/test_bit()

		return 0;
	return out_of_line_wait_on_bit(word, bit, action, mode);

• • linux-2.6.33/out_of_line_wait_on_bit()

}

コメント†