Import jemalloc 9ef7f5dc34ff02f50d401e41c8d9a4a928e7c2aa (dev branch,

prior to 3.0.0 release) as contrib/jemalloc, and integrate it into libc.
The code being imported by this commit diverged from
lib/libc/stdlib/malloc.c in March 2010, which means that a portion of
the jemalloc 1.0.0 ChangeLog entries are relevant, as are the entries
for all subsequent releases.

1 files changed, 76 insertions, 0 deletions

diff --git a/contrib/jemalloc/include/jemalloc/jemalloc_FreeBSD.h b/contrib/jemalloc/include/jemalloc/jemalloc_FreeBSD.h
new file mode 100644
index 0000000..2c5797f
--- /dev/null
+++ b/contrib/jemalloc/include/jemalloc/jemalloc_FreeBSD.h
@@ -0,0 +1,76 @@
+/*
+ * Override settings that were generated in jemalloc_defs.h as necessary.
+ */
+
+#undef JEMALLOC_OVERRIDE_VALLOC
+
+#ifndef MALLOC_PRODUCTION
+#define	JEMALLOC_DEBUG
+#endif
+
+/*
+ * The following are architecture-dependent, so conditionally define them for
+ * each supported architecture.
+ */
+#undef CPU_SPINWAIT
+#undef JEMALLOC_TLS_MODEL
+#undef STATIC_PAGE_SHIFT
+#undef LG_SIZEOF_PTR
+#undef LG_SIZEOF_INT
+#undef LG_SIZEOF_LONG
+#undef LG_SIZEOF_INTMAX_T
+
+#ifdef __i386__
+#  define LG_SIZEOF_PTR		2
+#  define CPU_SPINWAIT		__asm__ volatile("pause")
+#  define JEMALLOC_TLS_MODEL	__attribute__((tls_model("initial-exec")))
+#endif
+#ifdef __ia64__
+#  define LG_SIZEOF_PTR		3
+#endif
+#ifdef __sparc64__
+#  define LG_SIZEOF_PTR		3
+#  define JEMALLOC_TLS_MODEL	__attribute__((tls_model("initial-exec")))
+#endif
+#ifdef __amd64__
+#  define LG_SIZEOF_PTR		3
+#  define CPU_SPINWAIT		__asm__ volatile("pause")
+#  define JEMALLOC_TLS_MODEL	__attribute__((tls_model("initial-exec")))
+#endif
+#ifdef __arm__
+#  define LG_SIZEOF_PTR		2
+#endif
+#ifdef __mips__
+#  define LG_SIZEOF_PTR		2
+#endif
+#ifdef __powerpc64__
+#  define LG_SIZEOF_PTR		3
+#elif defined(__powerpc__)
+#  define LG_SIZEOF_PTR		2
+#endif
+
+#ifndef JEMALLOC_TLS_MODEL
+#  define JEMALLOC_TLS_MODEL	/* Default. */
+#endif
+#ifdef __clang__
+#  undef JEMALLOC_TLS_MODEL
+#  define JEMALLOC_TLS_MODEL	/* clang does not support tls_model yet. */
+#endif
+
+#define	STATIC_PAGE_SHIFT	PAGE_SHIFT
+#define	LG_SIZEOF_INT		2
+#define	LG_SIZEOF_LONG		LG_SIZEOF_PTR
+#define	LG_SIZEOF_INTMAX_T	3
+
+/* Disable lazy-lock machinery, mangle isthreaded, and adjust its type. */
+#undef JEMALLOC_LAZY_LOCK
+extern int __isthreaded;
+#define	isthreaded		((bool)__isthreaded)
+
+/* Mangle. */
+#define	open			_open
+#define	read			_read
+#define	write			_write
+#define	close			_close
+#define	pthread_mutex_lock	_pthread_mutex_lock
+#define	pthread_mutex_unlock	_pthread_mutex_unlock