[LLVMbugs] [Bug 16847] New: GetMallocUsage returns wrong value

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=16847

            Bug ID: 16847
           Summary: GetMallocUsage returns wrong value
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Support Libraries
          Assignee: unassignedbugs at nondot.org
          Reporter: martin at se.inf.tu-dresden.de
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 11010
  --> http://llvm.org/bugs/attachment.cgi?id=11010&action=edit
Patch

GetMallocUsage should return the overall used space allocated by malloc.

Currently, the implementation just returns the space used by the arena (managed
by incrementing/decrementing the data segment). Nevertheless, requesting bigger
memory, malloc falls back to use mmap. That size should be counted as well.

Patch is attached.

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