LXR qemu/tests/unit/test-write-threshold.c

   1/*
   2 * Test block device write threshold
   3 *
   4 * This work is licensed under the terms of the GNU LGPL, version 2 or later.
   5 * See the COPYING.LIB file in the top-level directory.
   6 *
   7 */
   8
   9#include "qemu/osdep.h"
  10#include "block/block_int.h"
  11#include "block/write-threshold.h"
  12
  13
  14static void test_threshold_not_trigger(void)
  15{
  16    uint64_t threshold = 4 * 1024 * 1024;
  17    BlockDriverState bs;
  18
  19    memset(&bs, 0, sizeof(bs));
  20
  21    bdrv_write_threshold_set(&bs, threshold);
  22    bdrv_write_threshold_check_write(&bs, 1024, 1024);
  23    g_assert_cmpuint(bdrv_write_threshold_get(&bs), ==, threshold);
  24}
  25
  26
  27static void test_threshold_trigger(void)
  28{
  29    uint64_t threshold = 4 * 1024 * 1024;
  30    BlockDriverState bs;
  31
  32    memset(&bs, 0, sizeof(bs));
  33
  34    bdrv_write_threshold_set(&bs, threshold);
  35    bdrv_write_threshold_check_write(&bs, threshold - 1024, 2 * 1024);
  36    g_assert_cmpuint(bdrv_write_threshold_get(&bs), ==, 0);
  37}
  38
  39
  40int main(int argc, char **argv)
  41{
  42    g_test_init(&argc, &argv, NULL);
  43    g_test_add_func("/write-threshold/not-trigger", test_threshold_not_trigger);
  44    g_test_add_func("/write-threshold/trigger", test_threshold_trigger);
  45
  46    return g_test_run();
  47}
  48