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Ported #962 to C++.

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Improved alignment calculation logic.
Fixed test for zone.
Now, align parameter must be 2^n (n >=0). e.g. 1,2,4,8,16, ...
This commit is contained in:
Takatoshi Kondo
2021-08-29 12:40:28 +09:00
parent 76f5af0593
commit 860f7fce55
5 changed files with 37 additions and 9 deletions
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6
test/zone.cpp
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@@ -8,7 +8,7 @@ BOOST_AUTO_TEST_CASE(allocate_align)
msgpack::zone z;
char* start = (char*)z.allocate_align(1);
BOOST_CHECK_EQUAL(0ul, reinterpret_cast<std::size_t>(start) % sizeof(int));
for (std::size_t s = 1; s < sizeof(int); ++s) {
for (std::size_t s = 1; s < sizeof(int); s <<= 1) {
z.allocate_no_align(s);
char* buf_a = (char*)z.allocate_align(1);
BOOST_CHECK_EQUAL(0ul, reinterpret_cast<std::size_t>(buf_a) % sizeof(int));
@@ -18,10 +18,10 @@ BOOST_AUTO_TEST_CASE(allocate_align)
BOOST_AUTO_TEST_CASE(allocate_align_custom)
{
msgpack::zone z;
for (std::size_t align = 1; align < 64; ++align) {
for (std::size_t align = 1; align < 64; align <<= 1) {
char* start = (char*)z.allocate_align(1, align);
BOOST_CHECK_EQUAL(0ul, reinterpret_cast<std::size_t>(start) % align);
for (std::size_t s = 1; s < align; ++s) {
for (std::size_t s = 1; s < align; s <<= 1) {
z.allocate_no_align(s);
char* buf_a = (char*)z.allocate_align(1, align);
BOOST_CHECK_EQUAL(0ul, reinterpret_cast<std::size_t>(buf_a) % align);