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implement __aligned_malloc() and __aligned_free() #59
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2c06e96
implement __aligned_malloc() and __aligned_free()
gabylb 3178c2e
fix include_next typo
gabylb e29fb70
fix conflicts with system's time.h
gabylb 19a0e41
add assert for offset in __aligned_malloc
gabylb a8634ee
check size and alignment values
gabylb 51fe556
test __aligned_malloc with alignment 0
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Original file line number | Diff line number | Diff line change |
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#include "zos.h" | ||
#include "gtest/gtest.h" | ||
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#include <math.h> | ||
#include <unistd.h> | ||
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namespace { | ||
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constexpr int KB = 1024; | ||
constexpr int MB = KB * 1024; | ||
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#if (__TARGET_LIB__ >= 0x43010000) | ||
#define AlignedAlloc posix_memalign | ||
#else | ||
#define AlignedAlloc AlignedAlloc | ||
#endif | ||
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TEST(AlignedAlloc, TestOne) { | ||
size_t alignment = sysconf(_SC_PAGESIZE); | ||
size_t size = 123; | ||
void *ptr = __aligned_malloc(size, alignment); | ||
ASSERT_NE(ptr, nullptr); | ||
ASSERT_EQ(reinterpret_cast<size_t>(ptr) % alignment, 0); | ||
__aligned_free(ptr); | ||
} | ||
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TEST(AlignedAlloc, TestTwo) { | ||
size_t alignment; | ||
size_t size = 4096; | ||
void *ptr; | ||
for (int i=3; i<=30; i++) { | ||
alignment = powl(2, i); | ||
ASSERT_EQ(alignment % sizeof(void*), 0); | ||
ptr = __aligned_malloc(size, alignment); | ||
ASSERT_NE(ptr, nullptr); | ||
ASSERT_EQ(reinterpret_cast<size_t>(ptr) % alignment, 0); | ||
__aligned_free(ptr); | ||
} | ||
} | ||
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TEST(AlignedAlloc, TestThree) { | ||
size_t alignment; | ||
void *ptr; | ||
for (int i=3; i<=20; i++) { | ||
alignment = powl(2, i); | ||
ASSERT_EQ(alignment % sizeof(void*), 0); | ||
for (size_t size=1; size <= MB; size+=10) { | ||
ptr = __aligned_malloc(size, alignment); | ||
ASSERT_NE(ptr, nullptr); | ||
ASSERT_EQ(reinterpret_cast<size_t>(ptr) % alignment, 0); | ||
__aligned_free(ptr); | ||
} | ||
} | ||
} | ||
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} // namespace |
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Since you included other system headers you don't need to include this one directly.