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65 lines
1.7 KiB
C++
65 lines
1.7 KiB
C++
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef RUNTIME_PLATFORM_UTILS_MACOS_H_
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#define RUNTIME_PLATFORM_UTILS_MACOS_H_
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#include <libkern/OSByteOrder.h> // NOLINT
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namespace dart {
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inline int Utils::CountLeadingZeros(uword x) {
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#if defined(ARCH_IS_32_BIT)
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return __builtin_clzl(x);
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#elif defined(ARCH_IS_64_BIT)
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return __builtin_clzll(x);
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#else
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#error Architecture is not 32-bit or 64-bit.
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#endif
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}
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inline int Utils::CountTrailingZeros(uword x) {
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#if defined(ARCH_IS_32_BIT)
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return __builtin_ctzl(x);
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#elif defined(ARCH_IS_64_BIT)
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return __builtin_ctzll(x);
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#else
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#error Architecture is not 32-bit or 64-bit.
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#endif
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}
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inline uint16_t Utils::HostToBigEndian16(uint16_t value) {
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return OSSwapHostToBigInt16(value);
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}
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inline uint32_t Utils::HostToBigEndian32(uint32_t value) {
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return OSSwapHostToBigInt32(value);
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}
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inline uint64_t Utils::HostToBigEndian64(uint64_t value) {
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return OSSwapHostToBigInt64(value);
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}
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inline uint16_t Utils::HostToLittleEndian16(uint16_t value) {
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return OSSwapHostToLittleInt16(value);
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}
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inline uint32_t Utils::HostToLittleEndian32(uint32_t value) {
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return OSSwapHostToLittleInt32(value);
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}
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inline uint64_t Utils::HostToLittleEndian64(uint64_t value) {
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return OSSwapHostToLittleInt64(value);
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}
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inline char* Utils::StrError(int err, char* buffer, size_t bufsize) {
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if (strerror_r(err, buffer, bufsize) != 0) {
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snprintf(buffer, bufsize, "%s", "strerror_r failed");
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}
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return buffer;
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}
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} // namespace dart
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#endif // RUNTIME_PLATFORM_UTILS_MACOS_H_
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