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1532a2f9a2
In comparison to standard glibc allocator, jemalloc fargments adress space less, and scales linearly in multithreaded environment. Author: Jason Evans, mad props to him. --HG-- branch : trunk
103 lines
2.8 KiB
C
103 lines
2.8 KiB
C
/* include/jemalloc/jemalloc_defs.h. Generated from jemalloc_defs.h.in by configure. */
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#ifndef JEMALLOC_DEFS_H_
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#define JEMALLOC_DEFS_H_
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/*
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* If JEMALLOC_PREFIX is defined, it will cause all public APIs to be prefixed.
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* This makes it possible, with some care, to use multiple allocators
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* simultaneously.
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*
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* In many cases it is more convenient to manually prefix allocator function
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* calls than to let macros do it automatically, particularly when using
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* multiple allocators simultaneously. Define JEMALLOC_MANGLE before
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* #include'ing jemalloc.h in order to cause name mangling that corresponds to
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* the API prefixing.
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*/
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/* #undef JEMALLOC_PREFIX */
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#if (defined(JEMALLOC_PREFIX) && defined(JEMALLOC_MANGLE))
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/* #undef JEMALLOC_P */
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#endif
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/*
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* Hyper-threaded CPUs may need a special instruction inside spin loops in
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* order to yield to another virtual CPU.
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*/
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#define CPU_SPINWAIT __asm__ volatile("pause")
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/* Defined if __attribute__((...)) syntax is supported. */
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#define JEMALLOC_HAVE_ATTR
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#ifdef JEMALLOC_HAVE_ATTR
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# define JEMALLOC_ATTR(s) __attribute__((s))
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#else
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# define JEMALLOC_ATTR(s)
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#endif
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/*
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* JEMALLOC_DEBUG enables assertions and other sanity checks, and disables
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* inline functions.
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*/
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/* #undef JEMALLOC_DEBUG */
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/* JEMALLOC_STATS enables statistics calculation. */
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/* #undef JEMALLOC_STATS */
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/* JEMALLOC_PROF enables allocation profiling. */
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/* #undef JEMALLOC_PROF */
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/* Use libunwind for profile backtracing if defined. */
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/* #undef JEMALLOC_PROF_LIBUNWIND */
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/* Use libgcc for profile backtracing if defined. */
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/* #undef JEMALLOC_PROF_LIBGCC */
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/*
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* JEMALLOC_TINY enables support for tiny objects, which are smaller than one
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* quantum.
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*/
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#define JEMALLOC_TINY
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/*
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* JEMALLOC_TCACHE enables a thread-specific caching layer for small objects.
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* This makes it possible to allocate/deallocate objects without any locking
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* when the cache is in the steady state.
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*/
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#define JEMALLOC_TCACHE
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/*
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* JEMALLOC_DSS enables use of sbrk(2) to allocate chunks from the data storage
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* segment (DSS).
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*/
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/* #undef JEMALLOC_DSS */
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/* JEMALLOC_SWAP enables mmap()ed swap file support. */
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/* #undef JEMALLOC_SWAP */
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/* Support memory filling (junk/zero). */
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/* #undef JEMALLOC_FILL */
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/* Support optional abort() on OOM. */
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/* #undef JEMALLOC_XMALLOC */
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/* Support SYSV semantics. */
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/* #undef JEMALLOC_SYSV */
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/* Support lazy locking (avoid locking unless a second thread is launched). */
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#define JEMALLOC_LAZY_LOCK
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/* Determine page size at run time if defined. */
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/* #undef DYNAMIC_PAGE_SHIFT */
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/* One page is 2^STATIC_PAGE_SHIFT bytes. */
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#define STATIC_PAGE_SHIFT 12
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/* TLS is used to map arenas and magazine caches to threads. */
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/* #undef NO_TLS */
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/* sizeof(void *) == 2^LG_SIZEOF_PTR. */
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#define LG_SIZEOF_PTR 3
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/* sizeof(int) == 2^LG_SIZEOF_INT. */
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#define LG_SIZEOF_INT 2
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#endif /* JEMALLOC_DEFS_H_ */
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