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| author | Ian Lance Taylor <ian@gcc.gnu.org> | 2012-09-28 21:25:20 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@gcc.gnu.org> | 2012-09-28 21:25:20 +0000 |
| commit | ddd06f537235203ce3e9f7a2a5e454410317995c (patch) | |
| tree | c312f5f6a11f323dc9f8d70c8f1604219de561bb /libgo/runtime/malloc.h | |
| parent | e78410bf1198e3ce4a37678c991821359b0fde79 (diff) | |
| download | gcc-ddd06f537235203ce3e9f7a2a5e454410317995c.zip gcc-ddd06f537235203ce3e9f7a2a5e454410317995c.tar.gz gcc-ddd06f537235203ce3e9f7a2a5e454410317995c.tar.bz2 | |
runtime: Better detection of memory allocation request overflow.
From-SVN: r191841
Diffstat (limited to 'libgo/runtime/malloc.h')
| -rw-r--r-- | libgo/runtime/malloc.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/libgo/runtime/malloc.h b/libgo/runtime/malloc.h index 16bb449..96cb609 100644 --- a/libgo/runtime/malloc.h +++ b/libgo/runtime/malloc.h @@ -128,6 +128,15 @@ enum MaxGcproc = 4, }; +// Maximum memory allocation size, a hint for callers. +// This must be a #define instead of an enum because it +// is so large. +#if __SIZEOF_POINTER__ == 8 +#define MaxMem (16ULL<<30) /* 16 GB */ +#else +#define MaxMem ((uintptr)-1) +#endif + // A generic linked list of blocks. (Typically the block is bigger than sizeof(MLink).) struct MLink { |