diff options
Diffstat (limited to 'vespamalloc/src/tests/test1/new_test.cpp')
| -rw-r--r-- | vespamalloc/src/tests/test1/new_test.cpp | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/vespamalloc/src/tests/test1/new_test.cpp b/vespamalloc/src/tests/test1/new_test.cpp index dfa67f2aa7c..9ea4418aad5 100644 --- a/vespamalloc/src/tests/test1/new_test.cpp +++ b/vespamalloc/src/tests/test1/new_test.cpp @@ -1,6 +1,7 @@ // Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root. #include <vespa/vespalib/testkit/testapp.h> #include <vespa/vespalib/util/size_literals.h> +#include <vespa/vespalib/util/optimized.h> #include <vespa/log/log.h> #include <malloc.h> #include <dlfcn.h> @@ -250,4 +251,43 @@ TEST("test realloc large buffers") { EXPECT_EQUAL(1, mallopt(M_MMAP_THRESHOLD, 1_Gi)); } +void verify_alignment(void * ptr, size_t align, size_t min_sz) { + EXPECT_NOT_EQUAL(ptr, nullptr); + EXPECT_EQUAL(0u, size_t(ptr) & (align-1)); + assert(0ul == (size_t(ptr) & (align-1))); + EXPECT_GREATER_EQUAL(malloc_usable_size(ptr), min_sz); + free(ptr); +} + +TEST("test memalign") { + verify_alignment(memalign(0, 0), 1, 1); + verify_alignment(memalign(0, 1), 1, 1); + verify_alignment(memalign(1, 0), 1, 1); + + for (size_t align : {3,7,19}) { + // According to man pages these should fail, but it seems it rounds up and does best effort + verify_alignment(memalign(align, 73), 1ul << vespalib::Optimized::msbIdx(align), 73); + } + for (size_t align : {1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536}) { + verify_alignment(memalign(align, 1), align, 1); + } +} + +TEST("test aligned_alloc") { + verify_alignment(aligned_alloc(0, 0), 1, 1); + verify_alignment(aligned_alloc(0, 1), 1, 1); + verify_alignment(aligned_alloc(1, 0), 1, 1); + for (size_t align : {3,7,19}) { + // According to man pages these should fail, but it seems it rounds up and does best effort + verify_alignment(aligned_alloc(align, align*7), 1ul << vespalib::Optimized::msbIdx(align), align*7); + } + for (size_t align : {1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536}) { + verify_alignment(aligned_alloc(align, align*7), align, align*7); + } + for (size_t sz : {31,33,63}) { + // According to man pages these should fail, but it seems it rounds up and does best effort + verify_alignment(aligned_alloc(32, sz), 32, sz); + } +} + TEST_MAIN() { TEST_RUN_ALL(); } |