Teach -track-memory to work on darwin. Looking at sbrk doesn't work because

the default allocator uses mmap.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24349 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/System/Unix/Process.inc b/lib/System/Unix/Process.inc
index e5a93786aa43bff4323a01818340e54483c9beb4..f73444f0c05b766f46221e9e569183b5099bb2aa 100644 (file)
--- a/lib/System/Unix/Process.inc
+++ b/lib/System/Unix/Process.inc
@@ -21,6 +21,9 @@
 #ifdef HAVE_MALLOC_H
 #include <malloc.h>
 #endif
+#ifdef HAVE_MALLOC_MALLOC_H
+#include <malloc/malloc.h>
+#endif
 
 //===----------------------------------------------------------------------===//
 //=== WARNING: Implementation here must contain only generic UNIX code that
@@ -43,23 +46,20 @@ Process::GetPageSize()
   return static_cast<unsigned>(page_size);
 }
 
-#if defined(HAVE_SBRK)
-static char* som = reinterpret_cast<char*>(::sbrk(0));
-#endif
-
-size_t 
-Process::GetMallocUsage()
-{
+size_t Process::GetMallocUsage() {
 #if defined(HAVE_MALLINFO)
   struct mallinfo mi;
   mi = ::mallinfo();
   return mi.uordblks;
+#elif defined(HAVE_MSTATS) && defined(HAVE_MALLOC_MALLOC_H)
+  return mstats().bytes_used;   // darwin
 #elif defined(HAVE_SBRK)
   // Note this is only an approximation and more closely resembles
   // the value returned by mallinfo in the arena field.
-  char * eom = (char*) sbrk(0);
-  if (eom != ((char*)-1) && som != ((char*)-1))
-    return eom - som;
+  static char *StartOfMemory = reinterpret_cast<char*>(::sbrk(0));
+  char *EndOfMemory = (char*)sbrk(0);
+  if (EndOfMemory != ((char*)-1) && StartOfMemory != ((char*)-1))
+    return EndOfMemory - StartOfMemory;
   else
     return 0;
 #else
@@ -74,6 +74,8 @@ Process::GetTotalMemoryUsage()
 #if defined(HAVE_MALLINFO)
   struct mallinfo mi = ::mallinfo();
   return mi.uordblks + mi.hblkhd;
+#elif defined(HAVE_MSTATS) && defined(HAVE_MALLOC_MALLOC_H)
+  return mstats().bytes_total;   // darwin
 #elif defined(HAVE_GETRUSAGE)
   struct rusage usage;
   ::getrusage(RUSAGE_SELF, &usage);