d82a5e6a34
Implement the *allocx() API, which is a successor to the *allocm() API.
The *allocx() functions are slightly simpler to use because they have
fewer parameters, they directly return the results of primary interest,
and mallocx()/rallocx() avoid the strict aliasing pitfall that
allocm()/rallocx() share with posix_memalign(). The following code
violates strict aliasing rules:
foo_t *foo;
allocm((void **)&foo, NULL, 42, 0);
whereas the following is safe:
foo_t *foo;
void *p;
allocm(&p, NULL, 42, 0);
foo = (foo_t *)p;
mallocx() does not have this problem:
foo_t *foo = (foo_t *)mallocx(42, 0);
79 lines
2.4 KiB
C
79 lines
2.4 KiB
C
/*
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* By default application code must explicitly refer to mangled symbol names,
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* so that it is possible to use jemalloc in conjunction with another allocator
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* in the same application. Define JEMALLOC_MANGLE in order to cause automatic
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* name mangling that matches the API prefixing that happened as a result of
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* --with-mangling and/or --with-jemalloc-prefix configuration settings.
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*/
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#ifdef JEMALLOC_MANGLE
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# ifndef JEMALLOC_NO_DEMANGLE
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# define JEMALLOC_NO_DEMANGLE
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# endif
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# define malloc_conf je_malloc_conf
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# define malloc_message je_malloc_message
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# define malloc je_malloc
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# define calloc je_calloc
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# define posix_memalign je_posix_memalign
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# define aligned_alloc je_aligned_alloc
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# define realloc je_realloc
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# define free je_free
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# define mallocx je_mallocx
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# define rallocx je_rallocx
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# define xallocx je_xallocx
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# define sallocx je_sallocx
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# define dallocx je_dallocx
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# define nallocx je_nallocx
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# define mallctl je_mallctl
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# define mallctlnametomib je_mallctlnametomib
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# define mallctlbymib je_mallctlbymib
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# define malloc_stats_print je_malloc_stats_print
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# define malloc_usable_size je_malloc_usable_size
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# define memalign je_memalign
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# define valloc je_valloc
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# ifdef JEMALLOC_EXPERIMENTAL
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# define allocm je_allocm
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# define rallocm je_rallocm
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# define sallocm je_sallocm
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# define dallocm je_dallocm
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# define nallocm je_nallocm
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# endif
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#endif
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/*
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* The je_* macros can be used as stable alternative names for the public
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* jemalloc API if JEMALLOC_NO_DEMANGLE is defined. This is primarily meant
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* for use in jemalloc itself, but it can be used by application code to
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* provide isolation from the name mangling specified via --with-mangling
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* and/or --with-jemalloc-prefix.
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*/
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#ifndef JEMALLOC_NO_DEMANGLE
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# undef je_malloc_conf
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# undef je_malloc_message
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# undef je_malloc
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# undef je_calloc
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# undef je_posix_memalign
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# undef je_aligned_alloc
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# undef je_realloc
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# undef je_free
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# undef je_malloc_usable_size
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# undef je_malloc_stats_print
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# undef je_mallctl
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# undef je_mallctlnametomib
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# undef je_mallctlbymib
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# undef je_memalign
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# undef je_valloc
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# undef je_mallocx
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# undef je_rallocx
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# undef je_xallocx
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# undef je_sallocx
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# undef je_dallocx
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# undef je_nallocx
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# ifdef JEMALLOC_EXPERIMENTAL
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# undef je_allocm
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# undef je_rallocm
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# undef je_sallocm
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# undef je_dallocm
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# undef je_nallocm
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# endif
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#endif
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