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AK/Userland: Use AK/Endian.h for portable byte swapping in ntpquery

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Create macros for the byte swap operations one would expect to be in
endian.h or byteswap.h in AK/Endian.h. It's likely a similar/different
change will be needed for BSDs, but there's no github action for those
added to the project yet.
This commit is contained in:
Andrew Kaster 2020-12-27 16:51:03 -07:00 committed by Andreas Kling
parent 42323d769a
commit 02fcf3974e
2 changed files with 26 additions and 2 deletions
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24
AK/Endian.h
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@ -29,6 +29,30 @@
#include <AK/Forward.h>
#include <AK/Platform.h>
#if defined(AK_OS_MACOS)
# include <libkern/OSByteOrder.h>
# include <machine/endian.h>
# define htobe16(x) OSSwapHostToBigInt16(x)
# define htole16(x) OSSwapHostToLittleInt16(x)
# define be16toh(x) OSSwapBigToHostInt16(x)
# define le16toh(x) OSSwapLittleToHostInt16(x)
# define htobe32(x) OSSwapHostToBigInt32(x)
# define htole32(x) OSSwapHostToLittleInt32(x)
# define be32toh(x) OSSwapBigToHostInt32(x)
# define le32toh(x) OSSwapLittleToHostInt32(x)
# define htobe64(x) OSSwapHostToBigInt64(x)
# define htole64(x) OSSwapHostToLittleInt64(x)
# define be64toh(x) OSSwapBigToHostInt64(x)
# define le64toh(x) OSSwapLittleToHostInt64(x)
# define __BIG_ENDIAN BIG_ENDIAN
# define __LITTLE_ENDIAN LITTLE_ENDIAN
# define __BYTE_ORDER BYTE_ORDER
#endif
namespace AK {
template<typename T>

4
Userland/ntpquery.cpp
View file

@ -26,10 +26,10 @@
#define _BSD_SOURCE
#define _DEFAULT_SOURCE
#include <AK/Endian.h>
#include <AK/Random.h>
#include <LibCore/ArgsParser.h>
#include <arpa/inet.h>
#include <endian.h>
#include <inttypes.h>
#include <math.h>
#include <netdb.h>
@ -303,7 +303,7 @@ int main(int argc, char** argv)
// When the system isn't under load, user-space t and packet_t are identical. If a shell with `yes` is running, it can be as high as 30ms in this program,
// which gets user-space time immediately after the recvmsg() call. In programs that have an event loop reading from multiple sockets, it could be higher.
printf("Receive latency: %" PRId64 ".%06d s\n", kernel_to_userspace_latency.tv_sec, (int)kernel_to_userspace_latency.tv_usec);
printf("Receive latency: %" PRId64 ".%06d s\n", (i64)kernel_to_userspace_latency.tv_sec, (int)kernel_to_userspace_latency.tv_usec);
}
// Parts of the "Clock Filter" computations, https://tools.ietf.org/html/rfc5905#section-10