diff options
| -rw-r--r-- | libbb/appletlib.c | 8 | ||||
| -rw-r--r-- | shell/hush.c | 9 |
2 files changed, 17 insertions, 0 deletions
diff --git a/libbb/appletlib.c b/libbb/appletlib.c index f760af2cb..2d01a3ae7 100644 --- a/libbb/appletlib.c +++ b/libbb/appletlib.c @@ -942,6 +942,14 @@ int main(int argc UNUSED_PARAM, char **argv) */ mallopt(M_MMAP_THRESHOLD, 32 * 1024 - 256); #endif +#if 0 /*def M_TOP_PAD*/ + /* When the program break is increased, then M_TOP_PAD bytes are added + * to the sbrk(2) request. When the heap is trimmed because of free(3), + * this much free space is preserved at the top of the heap. + * glibc default seems to be way too big: 128k, but need to verify. + */ + mallopt(M_TOP_PAD, 8 * 1024); +#endif #if !BB_MMU /* NOMMU re-exec trick sets high-order bit in first byte of name */ diff --git a/shell/hush.c b/shell/hush.c index 668b1f2b7..9b51f389e 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -9284,6 +9284,15 @@ static int FAST_FUNC builtin_memleak(char **argv UNUSED_PARAM) if (l < (unsigned long)p) l = (unsigned long)p; free(p); + +# if 0 /* debug */ + { + struct mallinfo mi = mallinfo(); + printf("top alloc:0x%lx malloced:%d+%d=%d\n", l, + mi.arena, mi.hblkhd, mi.arena + mi.hblkhd); + } +# endif + if (!G.memleak_value) G.memleak_value = l; |