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Add a generic malloc test for MALLOC_ALIGNMENT
1. Add sysdeps/generic/malloc-size.h to define size related macros for malloc. 2. Move x86_64/tst-mallocalign1.c to malloc and replace ALIGN_MASK with MALLOC_ALIGN_MASK. 3. Add tst-mallocalign1 to tests-exclude-mcheck for i386 and x32 since mcheck doesn't honor MALLOC_ALIGNMENT.
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@ -21,46 +21,7 @@
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#include <malloc-machine.h>
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#include <malloc-sysdep.h>
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/* INTERNAL_SIZE_T is the word-size used for internal bookkeeping of
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chunk sizes.
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The default version is the same as size_t.
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While not strictly necessary, it is best to define this as an
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unsigned type, even if size_t is a signed type. This may avoid some
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artificial size limitations on some systems.
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On a 64-bit machine, you may be able to reduce malloc overhead by
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defining INTERNAL_SIZE_T to be a 32 bit `unsigned int' at the
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expense of not being able to handle more than 2^32 of malloced
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space. If this limitation is acceptable, you are encouraged to set
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this unless you are on a platform requiring 16byte alignments. In
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this case the alignment requirements turn out to negate any
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potential advantages of decreasing size_t word size.
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Implementors: Beware of the possible combinations of:
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- INTERNAL_SIZE_T might be signed or unsigned, might be 32 or 64 bits,
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and might be the same width as int or as long
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- size_t might have different width and signedness as INTERNAL_SIZE_T
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- int and long might be 32 or 64 bits, and might be the same width
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To deal with this, most comparisons and difference computations
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among INTERNAL_SIZE_Ts should cast them to unsigned long, being
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aware of the fact that casting an unsigned int to a wider long does
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not sign-extend. (This also makes checking for negative numbers
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awkward.) Some of these casts result in harmless compiler warnings
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on some systems. */
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#ifndef INTERNAL_SIZE_T
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# define INTERNAL_SIZE_T size_t
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#endif
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/* The corresponding word size. */
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#define SIZE_SZ (sizeof (INTERNAL_SIZE_T))
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/* The corresponding bit mask value. */
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#define MALLOC_ALIGN_MASK (MALLOC_ALIGNMENT - 1)
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#include <malloc-size.h>
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/* Called in the parent process before a fork. */
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void __malloc_fork_lock_parent (void) attribute_hidden;
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