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authorGravatar Abseil Team <absl-team@google.com>2018-12-04 11:01:12 -0800
committerGravatar Ashley Hedberg <ahedberg@google.com>2018-12-04 16:54:40 -0500
commitfcb104594b0bb4b8ac306cb2f55ecdad40974683 (patch)
treed2d79d246c6a894ca6716f47c15ebb7b8796b36a /absl/synchronization/internal/kernel_timeout.h
parent6c7de165d1c82684359ccb630bb5f83263fa5ebc (diff)
Creation of LTS branch "lts_2018_12_18"20181200
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Diffstat (limited to 'absl/synchronization/internal/kernel_timeout.h')
-rw-r--r--absl/synchronization/internal/kernel_timeout.h30
1 files changed, 16 insertions, 14 deletions
diff --git a/absl/synchronization/internal/kernel_timeout.h b/absl/synchronization/internal/kernel_timeout.h
index 3d3dc0cb..34ae94ec 100644
--- a/absl/synchronization/internal/kernel_timeout.h
+++ b/absl/synchronization/internal/kernel_timeout.h
@@ -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>
@@ -37,7 +34,7 @@
#include "absl/time/time.h"
namespace absl {
-inline namespace lts_2018_06_20 {
+inline namespace lts_2018_12_18 {
namespace synchronization_internal {
class Futex;
@@ -80,7 +77,7 @@ class KernelTimeout {
if (x <= 0) x = 1;
// A time larger than what can be represented to the kernel is treated
// as no timeout.
- if (x == std::numeric_limits<int64_t>::max()) x = 0;
+ if (x == (std::numeric_limits<int64_t>::max)()) x = 0;
return x;
}
@@ -94,7 +91,7 @@ class KernelTimeout {
ERROR,
"Tried to create a timespec from a non-timeout; never do this.");
// But we'll try to continue sanely. no-timeout ~= saturated timeout.
- n = std::numeric_limits<int64_t>::max();
+ n = (std::numeric_limits<int64_t>::max)();
}
// Kernel APIs validate timespecs as being at or after the epoch,
@@ -105,7 +102,7 @@ class KernelTimeout {
struct timespec abstime;
int64_t seconds = std::min(n / kNanosPerSecond,
- int64_t{std::numeric_limits<time_t>::max()});
+ int64_t{(std::numeric_limits<time_t>::max)()});
abstime.tv_sec = static_cast<time_t>(seconds);
abstime.tv_nsec =
static_cast<decltype(abstime.tv_nsec)>(n % kNanosPerSecond);
@@ -118,9 +115,14 @@ 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; // NOLINT
+ 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
@@ -129,13 +131,13 @@ class KernelTimeout {
if (ns_ >= now) {
// Round up so that Now() + ms_from_now >= ns_.
constexpr uint64_t max_nanos =
- std::numeric_limits<int64_t>::max() - 999999u;
+ (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;
}
@@ -146,6 +148,6 @@ class KernelTimeout {
};
} // namespace synchronization_internal
-} // inline namespace lts_2018_06_20
+} // inline namespace lts_2018_12_18
} // namespace absl
#endif // ABSL_SYNCHRONIZATION_INTERNAL_KERNEL_TIMEOUT_H_