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, 61 insertions, 0 deletions

diff --git a/dep/include/jemalloc/internal/mutex.h b/dep/include/jemalloc/internal/mutex.h
new file mode 100644
index 00000000000..108bfa8abfd
--- /dev/null
+++ b/dep/include/jemalloc/internal/mutex.h
@@ -0,0 +1,61 @@
+/******************************************************************************/
+#ifdef JEMALLOC_H_TYPES
+
+typedef pthread_mutex_t malloc_mutex_t;
+
+#endif /* JEMALLOC_H_TYPES */
+/******************************************************************************/
+#ifdef JEMALLOC_H_STRUCTS
+
+#endif /* JEMALLOC_H_STRUCTS */
+/******************************************************************************/
+#ifdef JEMALLOC_H_EXTERNS
+
+#ifdef JEMALLOC_LAZY_LOCK
+extern bool isthreaded;
+#else
+#  define isthreaded true
+#endif
+
+bool	malloc_mutex_init(malloc_mutex_t *mutex);
+
+#endif /* JEMALLOC_H_EXTERNS */
+/******************************************************************************/
+#ifdef JEMALLOC_H_INLINES
+
+#ifndef JEMALLOC_ENABLE_INLINE
+void	malloc_mutex_lock(malloc_mutex_t *mutex);
+bool	malloc_mutex_trylock(malloc_mutex_t *mutex);
+void	malloc_mutex_unlock(malloc_mutex_t *mutex);
+#endif
+
+#if (defined(JEMALLOC_ENABLE_INLINE) || defined(JEMALLOC_MUTEX_C_))
+JEMALLOC_INLINE void
+malloc_mutex_lock(malloc_mutex_t *mutex)
+{
+
+	if (isthreaded)
+		pthread_mutex_lock(mutex);
+}
+
+JEMALLOC_INLINE bool
+malloc_mutex_trylock(malloc_mutex_t *mutex)
+{
+
+	if (isthreaded)
+		return (pthread_mutex_trylock(mutex) != 0);
+	else
+		return (false);
+}
+
+JEMALLOC_INLINE void
+malloc_mutex_unlock(malloc_mutex_t *mutex)
+{
+
+	if (isthreaded)
+		pthread_mutex_unlock(mutex);
+}
+#endif
+
+#endif /* JEMALLOC_H_INLINES */
+/******************************************************************************/