Use jemalloc as memory allocator on linux.

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

1 files changed, 102 insertions, 0 deletions

diff --git a/dep/include/jemalloc/jemalloc_defs.h b/dep/include/jemalloc/jemalloc_defs.h
new file mode 100644
index 00000000000..e8acaed3abd
--- /dev/null
+++ b/dep/include/jemalloc/jemalloc_defs.h
@@ -0,0 +1,102 @@
+/* include/jemalloc/jemalloc_defs.h.  Generated from jemalloc_defs.h.in by configure.  */
+#ifndef JEMALLOC_DEFS_H_
+#define	JEMALLOC_DEFS_H_
+
+/*
+ * If JEMALLOC_PREFIX is defined, it will cause all public APIs to be prefixed.
+ * This makes it possible, with some care, to use multiple allocators
+ * simultaneously.
+ *
+ * In many cases it is more convenient to manually prefix allocator function
+ * calls than to let macros do it automatically, particularly when using
+ * multiple allocators simultaneously.  Define JEMALLOC_MANGLE before
+ * #include'ing jemalloc.h in order to cause name mangling that corresponds to
+ * the API prefixing.
+ */
+/* #undef JEMALLOC_PREFIX */
+#if (defined(JEMALLOC_PREFIX) && defined(JEMALLOC_MANGLE))
+/* #undef JEMALLOC_P */
+#endif
+
+/*
+ * Hyper-threaded CPUs may need a special instruction inside spin loops in
+ * order to yield to another virtual CPU.
+ */
+#define CPU_SPINWAIT __asm__ volatile("pause")
+
+/* Defined if __attribute__((...)) syntax is supported. */
+#define JEMALLOC_HAVE_ATTR 
+#ifdef JEMALLOC_HAVE_ATTR
+#  define JEMALLOC_ATTR(s) __attribute__((s))
+#else
+#  define JEMALLOC_ATTR(s)
+#endif
+
+/*
+ * JEMALLOC_DEBUG enables assertions and other sanity checks, and disables
+ * inline functions.
+ */
+/* #undef JEMALLOC_DEBUG */
+
+/* JEMALLOC_STATS enables statistics calculation. */
+/* #undef JEMALLOC_STATS */
+
+/* JEMALLOC_PROF enables allocation profiling. */
+/* #undef JEMALLOC_PROF */
+
+/* Use libunwind for profile backtracing if defined. */
+/* #undef JEMALLOC_PROF_LIBUNWIND */
+
+/* Use libgcc for profile backtracing if defined. */
+/* #undef JEMALLOC_PROF_LIBGCC */
+
+/*
+ * JEMALLOC_TINY enables support for tiny objects, which are smaller than one
+ * quantum.
+ */
+#define JEMALLOC_TINY 
+
+/*
+ * JEMALLOC_TCACHE enables a thread-specific caching layer for small objects.
+ * This makes it possible to allocate/deallocate objects without any locking
+ * when the cache is in the steady state.
+ */
+#define JEMALLOC_TCACHE 
+
+/*
+ * JEMALLOC_DSS enables use of sbrk(2) to allocate chunks from the data storage
+ * segment (DSS).
+ */
+/* #undef JEMALLOC_DSS */
+
+/* JEMALLOC_SWAP enables mmap()ed swap file support. */
+/* #undef JEMALLOC_SWAP */
+
+/* Support memory filling (junk/zero). */
+/* #undef JEMALLOC_FILL */
+
+/* Support optional abort() on OOM. */
+/* #undef JEMALLOC_XMALLOC */
+
+/* Support SYSV semantics. */
+/* #undef JEMALLOC_SYSV */
+
+/* Support lazy locking (avoid locking unless a second thread is launched). */
+#define JEMALLOC_LAZY_LOCK 
+
+/* Determine page size at run time if defined. */
+/* #undef DYNAMIC_PAGE_SHIFT */
+
+/* One page is 2^STATIC_PAGE_SHIFT bytes. */
+#define STATIC_PAGE_SHIFT 12
+
+/* TLS is used to map arenas and magazine caches to threads. */
+/* #undef NO_TLS */
+
+/* sizeof(void *) == 2^LG_SIZEOF_PTR. */
+#define LG_SIZEOF_PTR 3
+
+/* sizeof(int) == 2^LG_SIZEOF_INT. */
+#define LG_SIZEOF_INT 2
+
+#endif /* JEMALLOC_DEFS_H_ */