[Support/Timer] Make GetMallocUsage() aware of jemalloc.

Differential Revision:	D7657
Reviewed by:	shankarke, majnemer

llvm-svn: 229824

cmake/config-ix.cmake

@@ -163,6 +163,7 @@ if( HAVE_SYS_UIO_H )
   check_symbol_exists(writev sys/uio.h HAVE_WRITEV)
 endif()
 check_symbol_exists(nearbyintf math.h HAVE_NEARBYINTF)
+check_symbol_exists(mallctl malloc_np.h HAVE_MALLCTL)
 check_symbol_exists(mallinfo malloc.h HAVE_MALLINFO)
 check_symbol_exists(malloc_zone_statistics malloc/malloc.h
                     HAVE_MALLOC_ZONE_STATISTICS)

include/llvm/Config/config.h.cmake

@@ -222,6 +222,9 @@
 /* Define to 1 if you have the `malloc_zone_statistics' function. */
 #cmakedefine HAVE_MALLOC_ZONE_STATISTICS ${HAVE_MALLOC_ZONE_STATISTICS}
 
+/* Define to 1 if you have the `mallctl` function. */
+#cmakedefine HAVE_MALLCTL ${HAVE_MALLCTL}
+
 /* Define to 1 if you have the `mkdtemp' function. */
 #cmakedefine HAVE_MKDTEMP ${HAVE_MKDTEMP}
 

include/llvm/Config/config.h.in

@@ -210,6 +210,9 @@
 /* Define if mallinfo() is available on this platform. */
 #undef HAVE_MALLINFO
 
+/* Define if mallctl() is available on this plaform. */
+#undef HAVE_MALLCTL
+
 /* Define to 1 if you have the <malloc.h> header file. */
 #undef HAVE_MALLOC_H
 

lib/Support/Unix/Process.inc

@@ -39,6 +39,9 @@
     !defined(__OpenBSD__) && !defined(__Bitrig__)
 #include <malloc.h>
 #endif
+#if defined(HAVE_MALLCTL)
+#include <malloc_np.h>
+#endif
 #ifdef HAVE_MALLOC_MALLOC_H
 #include <malloc/malloc.h>
 #endif
@@ -98,6 +101,13 @@ size_t Process::GetMallocUsage() {
   malloc_statistics_t Stats;
   malloc_zone_statistics(malloc_default_zone(), &Stats);
   return Stats.size_in_use;   // darwin
+#elif defined(HAVE_MALLCTL)
+  size_t alloc, sz;
+  sz = sizeof(size_t);
+  if (mallctl("stats.allocated", &alloc, &sz, NULL, 0) == 0)
+    return alloc;
+  else
+    return 0;
 #elif defined(HAVE_SBRK)
   // Note this is only an approximation and more closely resembles
   // the value returned by mallinfo in the arena field.