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

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the default allocator uses mmap.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24349 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-11-14 07:00:29 +00:00
parent 0b14259eb2
commit 513a9547f5
1 changed files with 12 additions and 10 deletions
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22
lib/System/Unix/Process.inc
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@ -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);