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unix: Allow -X heapsize number take 'w' specifier for word size adjustment.

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The specifier should go after the number, before size suffix like 'k' or 'm'.
E.g.: "-X heapsize=100wk" will use 100K heap on 32-bit system and 200K - on
64-bit.
This commit is contained in:
Paul Sokolovsky 2014-11-05 02:08:38 +02:00 committed by Damien George
parent 7860c2a68a
commit 98d8d59c33
1 changed files with 13 additions and 0 deletions
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13
unix/main.c
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@ -314,11 +314,24 @@ void pre_process_options(int argc, char **argv) {
char *end;
heap_size = strtol(argv[a + 1] + sizeof("heapsize=") - 1, &end, 0);
// Don't bring unneeded libc dependencies like tolower()
// If there's 'w' immediately after number, adjust it for
// target word size. Note that it should be *before* size
// suffix like K or M, to avoid confusion with kilowords,
// etc. the size is still in bytes, just can be adjusted
// for word size (taking 32bit as baseline).
bool word_adjust = false;
if ((*end | 0x20) == 'w') {
word_adjust = true;
end++;
}
if ((*end | 0x20) == 'k') {
heap_size *= 1024;
} else if ((*end | 0x20) == 'm') {
heap_size *= 1024 * 1024;
}
if (word_adjust) {
heap_size = heap_size * BYTES_PER_WORD / 4;
}
#endif
} else {
exit(usage(argv));