diff options
| author | Peter Xu <peterx@redhat.com> | 2017-05-12 12:17:40 +0800 |
|---|---|---|
| committer | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2017-05-17 17:30:45 +0100 |
| commit | 22951aaaebb6c4c314c58ad576960a9c57695bbc (patch) | |
| tree | f1071715f4dbec35fdeca1703eaf6fb5815ebb74 /qapi | |
| parent | 99e15582dea30d4a7c6fa5be9196d0f4d759231c (diff) | |
| download | qemu-22951aaaebb6c4c314c58ad576960a9c57695bbc.zip qemu-22951aaaebb6c4c314c58ad576960a9c57695bbc.tar.gz qemu-22951aaaebb6c4c314c58ad576960a9c57695bbc.tar.bz2 | |
utils: provide size_to_str()
Moving the algorithm from print_type_size() into size_to_str() so that
other component can also leverage it. With that, refactor
print_type_size().
The assert() in that logic is removed though, since even UINT64_MAX
would not overflow.
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <1494562661-9063-3-git-send-email-peterx@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Diffstat (limited to 'qapi')
| -rw-r--r-- | qapi/string-output-visitor.c | 22 |
1 files changed, 6 insertions, 16 deletions
diff --git a/qapi/string-output-visitor.c b/qapi/string-output-visitor.c index 94ac821..53c2175 100644 --- a/qapi/string-output-visitor.c +++ b/qapi/string-output-visitor.c @@ -211,10 +211,8 @@ static void print_type_size(Visitor *v, const char *name, uint64_t *obj, Error **errp) { StringOutputVisitor *sov = to_sov(v); - static const char suffixes[] = { 'B', 'K', 'M', 'G', 'T', 'P', 'E' }; - uint64_t div, val; - char *out; - int i; + uint64_t val; + char *out, *psize; if (!sov->human) { out = g_strdup_printf("%"PRIu64, *obj); @@ -223,19 +221,11 @@ static void print_type_size(Visitor *v, const char *name, uint64_t *obj, } val = *obj; - - /* The exponent (returned in i) minus one gives us - * floor(log2(val * 1024 / 1000). The correction makes us - * switch to the higher power when the integer part is >= 1000. - */ - frexp(val / (1000.0 / 1024.0), &i); - i = (i - 1) / 10; - assert(i < ARRAY_SIZE(suffixes)); - div = 1ULL << (i * 10); - - out = g_strdup_printf("%"PRIu64" (%0.3g %c%s)", val, - (double)val/div, suffixes[i], i ? "iB" : ""); + psize = size_to_str(val); + out = g_strdup_printf("%"PRIu64" (%s)", val, psize); string_output_set(sov, out); + + g_free(psize); } static void print_type_bool(Visitor *v, const char *name, bool *obj, |