TCMalloc: restrict maximum size of memory ranges

third_party/tcmalloc/chromium/src/common.h

Index: third_party/tcmalloc/chromium/src/common.h
diff --git a/third_party/tcmalloc/chromium/src/common.h b/third_party/tcmalloc/chromium/src/common.h
index c8ceb61ca6ea64fd02e8236840cf91ca42a6844f..84c5c37be9ef4cea805b7e936f71fe8984beb649 100644
--- a/third_party/tcmalloc/chromium/src/common.h
+++ b/third_party/tcmalloc/chromium/src/common.h
@@ -144,6 +144,10 @@ inline Length pages(size_t bytes) {
       ((bytes & (kPageSize - 1)) > 0 ? 1 : 0);
 }
 
+// For security reasons, we want to limit the size of allocations.
+// See crbug.com/169327.
+bool IsAllocSizePermitted(size_t alloc_size);

[Chris Evans, 2013/01/15 01:53:08]

Mark it inline. Any maybe have the implementation inline too? It's no larger
than the pages() function above.

[jln (very slow on Chromium), 2013/01/15 02:00:51]

Let me know how strongly you feel about it. Since it does straddle compilation
units, if we really want it inline, we should put the implementation in the
header.

I don't feel strongly either way.

+
 // For larger allocation sizes, we use larger memory alignments to
 // reduce the number of size classes.
 int AlignmentForSize(size_t size);