9c9ea37770
`posix_memalign` requires the `alignment` to be at least `sizeof(void *)`. Previously, `MEM_mallocN_aligned` would simply return `NULL` if a too small `alignment` was used. This was an OS specific issue. The solution is to use a minimal alignment of `8` for all aligned allocations. The unit tests have been extended to test more possible alignments (some of which were broken before). Reviewers: brecht Differential Revision: https://developer.blender.org/D6660
124 lines
2.1 KiB
C++
124 lines
2.1 KiB
C++
/* Apache License, Version 2.0 */
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#include "testing/testing.h"
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extern "C" {
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#include "BLI_utildefines.h"
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}
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#include "MEM_guardedalloc.h"
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#define CHECK_ALIGNMENT(ptr, align) EXPECT_EQ((size_t)ptr % align, 0)
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namespace {
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void DoBasicAlignmentChecks(const int alignment)
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{
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int *foo, *bar;
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foo = (int *)MEM_mallocN_aligned(sizeof(int) * 10, alignment, "test");
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CHECK_ALIGNMENT(foo, alignment);
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bar = (int *)MEM_dupallocN(foo);
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CHECK_ALIGNMENT(bar, alignment);
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MEM_freeN(bar);
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foo = (int *)MEM_reallocN(foo, sizeof(int) * 5);
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CHECK_ALIGNMENT(foo, alignment);
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foo = (int *)MEM_recallocN(foo, sizeof(int) * 5);
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CHECK_ALIGNMENT(foo, alignment);
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MEM_freeN(foo);
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}
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} // namespace
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TEST(guardedalloc, LockfreeAlignedAlloc1)
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{
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DoBasicAlignmentChecks(1);
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}
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TEST(guardedalloc, GuardedAlignedAlloc1)
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{
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MEM_use_guarded_allocator();
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DoBasicAlignmentChecks(1);
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}
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TEST(guardedalloc, LockfreeAlignedAlloc2)
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{
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DoBasicAlignmentChecks(2);
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}
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TEST(guardedalloc, GuardedAlignedAlloc2)
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{
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MEM_use_guarded_allocator();
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DoBasicAlignmentChecks(2);
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}
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TEST(guardedalloc, LockfreeAlignedAlloc4)
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{
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DoBasicAlignmentChecks(4);
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}
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TEST(guardedalloc, GuardedAlignedAlloc4)
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{
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MEM_use_guarded_allocator();
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DoBasicAlignmentChecks(4);
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}
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TEST(guardedalloc, LockfreeAlignedAlloc8)
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{
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DoBasicAlignmentChecks(8);
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}
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TEST(guardedalloc, GuardedAlignedAlloc8)
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{
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MEM_use_guarded_allocator();
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DoBasicAlignmentChecks(8);
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}
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TEST(guardedalloc, LockfreeAlignedAlloc16)
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{
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DoBasicAlignmentChecks(16);
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}
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TEST(guardedalloc, GuardedAlignedAlloc16)
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{
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MEM_use_guarded_allocator();
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DoBasicAlignmentChecks(16);
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}
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TEST(guardedalloc, LockfreeAlignedAlloc32)
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{
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DoBasicAlignmentChecks(32);
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}
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TEST(guardedalloc, GuardedAlignedAlloc32)
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{
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MEM_use_guarded_allocator();
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DoBasicAlignmentChecks(32);
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}
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TEST(guardedalloc, LockfreeAlignedAlloc256)
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{
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DoBasicAlignmentChecks(256);
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}
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TEST(guardedalloc, GuardedAlignedAlloc256)
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{
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MEM_use_guarded_allocator();
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DoBasicAlignmentChecks(256);
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}
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TEST(guardedalloc, LockfreeAlignedAlloc512)
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{
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DoBasicAlignmentChecks(512);
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}
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TEST(guardedalloc, GuardedAlignedAlloc512)
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{
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MEM_use_guarded_allocator();
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DoBasicAlignmentChecks(512);
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}
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