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Add isc_mem_overmem unit test

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The new unit isc_mem_overmem unit test sets hi and lo water marks and
then does allocations to go over:

0. x < lo_water
1. lo_water < x < hi_water
2. x > hi_water
3. lo_water < x < hi_water
4. < lo_water
This commit is contained in:
Ondřej Surý
2023-11-29 12:42:38 +01:00
parent 3383331d06
commit 0b865c781a
1 changed files with 35 additions and 0 deletions
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35
tests/isc/mem_test.c
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@@ -291,6 +291,40 @@ ISC_RUN_TEST_IMPL(isc_mem_reallocate) {
isc_mem_free(mctx, data);
}
ISC_RUN_TEST_IMPL(isc_mem_overmem) {
isc_mem_t *omctx = NULL;
isc_mem_create(&omctx);
assert_non_null(omctx);
isc_mem_setwater(omctx, 1024, 512);
/* inuse < lo_water */
void *data1 = isc_mem_allocate(omctx, 256);
assert_false(isc_mem_isovermem(omctx));
/* lo_water < inuse < hi_water */
void *data2 = isc_mem_allocate(omctx, 512);
assert_false(isc_mem_isovermem(omctx));
/* hi_water < inuse */
void *data3 = isc_mem_allocate(omctx, 512);
assert_true(isc_mem_isovermem(omctx));
/* lo_water < inuse < hi_water */
isc_mem_free(omctx, data2);
assert_true(isc_mem_isovermem(omctx));
/* inuse < lo_water */
isc_mem_free(omctx, data3);
assert_false(isc_mem_isovermem(omctx));
/* inuse == 0 */
isc_mem_free(omctx, data1);
assert_false(isc_mem_isovermem(omctx));
isc_mem_destroy(&omctx);
}
#if ISC_MEM_TRACKLINES
/* test mem with no flags */
@@ -486,6 +520,7 @@ ISC_TEST_ENTRY(isc_mem_inuse)
ISC_TEST_ENTRY(isc_mem_zeroget)
ISC_TEST_ENTRY(isc_mem_reget)
ISC_TEST_ENTRY(isc_mem_reallocate)
ISC_TEST_ENTRY(isc_mem_overmem)
#if ISC_MEM_TRACKLINES
ISC_TEST_ENTRY(isc_mem_noflags)