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util/cache_test: Add mesa-db test for adding cache entry bigger than empty cache

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Add Mesa-DB regression test for a segfault bug that happened when a cache
entry bigger than size-limit of the cache is added to empty cache.

Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Acked-by: Timothy Arceri <tarceri@itsqueeze.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30988>
This commit is contained in:
Dmitry Osipenko 2024-10-17 20:11:54 +03:00 • committed by Marge Bot
parent 5ec424c6be
commit f76ed795de
1 changed files with 32 additions and 0 deletions
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32
src/util/tests/cache_test.cpp
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@ -666,6 +666,36 @@ test_put_and_get_between_instances_with_eviction(const char *driver_id)
disk_cache_destroy(cache[0]);
disk_cache_destroy(cache[1]);
}
static void
test_put_big_sized_entry_to_empty_cache(const char *driver_id)
{
static uint8_t blob[4096];
uint8_t blob_key[20];
struct disk_cache *cache;
char *result;
size_t size;
#ifdef SHADER_CACHE_DISABLE_BY_DEFAULT
setenv("MESA_SHADER_CACHE_DISABLE", "false", 1);
#endif /* SHADER_CACHE_DISABLE_BY_DEFAULT */
setenv("MESA_SHADER_CACHE_MAX_SIZE", "1K", 1);
cache = disk_cache_create("test", driver_id, 0);
disk_cache_compute_key(cache, blob, sizeof(blob), blob_key);
disk_cache_put(cache, blob_key, blob, sizeof(blob), NULL);
disk_cache_wait_for_idle(cache);
result = (char *) disk_cache_get(cache, blob_key, &size);
EXPECT_NE(result, nullptr) << "disk_cache_get(cache) with existing item (pointer)";
EXPECT_EQ(size, sizeof(blob)) << "disk_cache_get of(cache) existing item (size)";
free(result);
disk_cache_destroy(cache);
}
#endif /* ENABLE_SHADER_CACHE */
class Cache : public ::testing::Test {
@ -786,6 +816,8 @@ TEST_F(Cache, Database)
test_put_and_get_between_instances_with_eviction(driver_id);
test_put_big_sized_entry_to_empty_cache(driver_id);
unsetenv("MESA_DISK_CACHE_DATABASE_NUM_PARTS");
err = rmrf_local(CACHE_TEST_TMP);