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/*
* Test block device write threshold
*
* This work is licensed under the terms of the GNU LGPL, version 2 or later.
* See the COPYING.LIB file in the top-level directory.
*
*/
#include "qemu/osdep.h"
#include "block/block_int.h"
#include "block/write-threshold.h"
static void test_threshold_not_set_on_init(void)
{
uint64_t res;
BlockDriverState bs;
memset(&bs, 0, sizeof(bs));
g_assert(!bdrv_write_threshold_is_set(&bs));
res = bdrv_write_threshold_get(&bs);
g_assert_cmpint(res, ==, 0);
}
static void test_threshold_set_get(void)
{
uint64_t threshold = 4 * 1024 * 1024;
uint64_t res;
BlockDriverState bs;
memset(&bs, 0, sizeof(bs));
bdrv_write_threshold_set(&bs, threshold);
g_assert(bdrv_write_threshold_is_set(&bs));
res = bdrv_write_threshold_get(&bs);
g_assert_cmpint(res, ==, threshold);
}
static void test_threshold_multi_set_get(void)
{
uint64_t threshold1 = 4 * 1024 * 1024;
uint64_t threshold2 = 15 * 1024 * 1024;
uint64_t res;
BlockDriverState bs;
memset(&bs, 0, sizeof(bs));
bdrv_write_threshold_set(&bs, threshold1);
bdrv_write_threshold_set(&bs, threshold2);
res = bdrv_write_threshold_get(&bs);
g_assert_cmpint(res, ==, threshold2);
}
static void test_threshold_not_trigger(void)
{
uint64_t amount = 0;
uint64_t threshold = 4 * 1024 * 1024;
BlockDriverState bs;
BdrvTrackedRequest req;
memset(&bs, 0, sizeof(bs));
memset(&req, 0, sizeof(req));
req.offset = 1024;
req.bytes = 1024;
assert(bdrv_check_request(req.offset, req.bytes) == 0);
bdrv_write_threshold_set(&bs, threshold);
amount = bdrv_write_threshold_exceeded(&bs, &req);
g_assert_cmpuint(amount, ==, 0);
}
static void test_threshold_trigger(void)
{
uint64_t amount = 0;
uint64_t threshold = 4 * 1024 * 1024;
BlockDriverState bs;
BdrvTrackedRequest req;
memset(&bs, 0, sizeof(bs));
memset(&req, 0, sizeof(req));
req.offset = (4 * 1024 * 1024) - 1024;
req.bytes = 2 * 1024;
assert(bdrv_check_request(req.offset, req.bytes) == 0);
bdrv_write_threshold_set(&bs, threshold);
amount = bdrv_write_threshold_exceeded(&bs, &req);
g_assert_cmpuint(amount, >=, 1024);
}
typedef struct TestStruct {
const char *name;
void (*func)(void);
} TestStruct;
int main(int argc, char **argv)
{
size_t i;
TestStruct tests[] = {
{ "/write-threshold/not-set-on-init",
test_threshold_not_set_on_init },
{ "/write-threshold/set-get",
test_threshold_set_get },
{ "/write-threshold/multi-set-get",
test_threshold_multi_set_get },
{ "/write-threshold/not-trigger",
test_threshold_not_trigger },
{ "/write-threshold/trigger",
test_threshold_trigger },
{ NULL, NULL }
};
g_test_init(&argc, &argv, NULL);
for (i = 0; tests[i].name != NULL; i++) {
g_test_add_func(tests[i].name, tests[i].func);
}
return g_test_run();
}
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