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Remove TimeValue usage from llvm/Support

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Summary:
This is a follow-up to D25416. It removes all usages of TimeValue from
llvm/Support library (except for the actual TimeValue declaration), and replaces
them with appropriate usages of std::chrono. To facilitate this, I have added
small utility functions for converting time points and durations into appropriate
OS-specific types (FILETIME, struct timespec, ...).

Reviewers: zturner, mehdi_amini

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D25730

llvm-svn: 284966
This commit is contained in:
Pavel Labath
2016-10-24 10:59:17 +00:00
parent 407fd070b7
commit 757ca886cd
15 changed files with 151 additions and 114 deletions
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10
llvm/lib/Support/Timer.cpp
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@@ -116,8 +116,10 @@ static inline size_t getMemUsage() {
}
TimeRecord TimeRecord::getCurrentTime(bool Start) {
using Seconds = std::chrono::duration<double, std::ratio<1>>;
TimeRecord Result;
sys::TimeValue now(0,0), user(0,0), sys(0,0);
sys::TimePoint<> now;
std::chrono::nanoseconds user, sys;
if (Start) {
Result.MemUsed = getMemUsage();
@@ -127,9 +129,9 @@ TimeRecord TimeRecord::getCurrentTime(bool Start) {
Result.MemUsed = getMemUsage();
}
Result.WallTime = now.seconds() + now.microseconds() / 1000000.0;
Result.UserTime = user.seconds() + user.microseconds() / 1000000.0;
Result.SystemTime = sys.seconds() + sys.microseconds() / 1000000.0;
Result.WallTime = Seconds(now.time_since_epoch()).count();
Result.UserTime = Seconds(user).count();
Result.SystemTime = Seconds(sys).count();
return Result;
}