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Merge pull request #143 from rongjiecomputer/kernel

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Remove dependency of windows.h in kernel_timeout.h
This commit is contained in:
Xiaoyi Zhang 2018-07-18 15:02:13 -04:00 committed by GitHub
commit 44aa275286
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 10 additions and 8 deletions
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18
absl/synchronization/internal/kernel_timeout.h
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@ -25,9 +25,6 @@
#ifndef ABSL_SYNCHRONIZATION_INTERNAL_KERNEL_TIMEOUT_H_
#define ABSL_SYNCHRONIZATION_INTERNAL_KERNEL_TIMEOUT_H_
#ifdef _WIN32
#include <intsafe.h>
#endif
#include <time.h>
#include <algorithm>
#include <limits>
@ -117,9 +114,14 @@ class KernelTimeout {
// Windows. Callers should recognize that the return value is a
// relative duration (it should be recomputed by calling this method
// in the case of a spurious wakeup).
DWORD InMillisecondsFromNow() const {
// This header file may be included transitively by public header files,
// so we define our own DWORD and INFINITE instead of getting them from
// <intsafe.h> and <WinBase.h>.
typedef unsigned long DWord;
DWord InMillisecondsFromNow() const {
constexpr DWord kInfinite = std::numeric_limits<DWord>::max();
if (!has_timeout()) {
return INFINITE;
return kInfinite;
}
// The use of absl::Now() to convert from absolute time to
// relative time means that absl::Now() cannot use anything that
@ -131,10 +133,10 @@ class KernelTimeout {
std::numeric_limits<int64_t>::max() - 999999u;
uint64_t ms_from_now =
(std::min<uint64_t>(max_nanos, ns_ - now) + 999999u) / 1000000u;
if (ms_from_now > std::numeric_limits<DWORD>::max()) {
return INFINITE;
if (ms_from_now > kInfinite) {
return kInfinite;
}
return static_cast<DWORD>(ms_from_now);
return static_cast<DWord>(ms_from_now);
}
return 0;
}