7f0ebbc69
Denys Vlasenko
2016-10-03
Subject
hush: add commented-out debug printouts in "memleak" built-in
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libbb/appletlib.c+8 -0
| @@ -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 */ | |
shell/hush.c+9 -0
| @@ -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; | |