generic-library/cxx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

N3191: C++ Timeout Specification

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@119909 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Howard Hinnant
2010-11-20 19:16:30 +00:00
parent f048fe3a09
commit f8f852138f
23 changed files with 63 additions and 63 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
src/chrono.cpp
View File

@@ -44,7 +44,7 @@ system_clock::from_time_t(time_t t)
return system_clock::time_point(seconds(t));
}
// monotonic_clock
// steady_clock
#if __APPLE__
// mach_absolute_time() * MachInfo.numer / MachInfo.denom is the number of
@@ -58,15 +58,15 @@ system_clock::from_time_t(time_t t)
#pragma GCC visibility push(hidden)
static
monotonic_clock::rep
monotonic_simplified()
steady_clock::rep
steady_simplified()
{
return mach_absolute_time();
}
static
double
compute_monotonic_factor()
compute_steady_factor()
{
mach_timebase_info_data_t MachInfo;
mach_timebase_info(&MachInfo);
@@ -74,32 +74,32 @@ compute_monotonic_factor()
}
static
monotonic_clock::rep
monotonic_full()
steady_clock::rep
steady_full()
{
static const double factor = compute_monotonic_factor();
return static_cast<monotonic_clock::rep>(mach_absolute_time() * factor);
static const double factor = compute_steady_factor();
return static_cast<steady_clock::rep>(mach_absolute_time() * factor);
}
typedef monotonic_clock::rep (*FP)();
typedef steady_clock::rep (*FP)();
static
FP
init_monotonic_clock()
init_steady_clock()
{
mach_timebase_info_data_t MachInfo;
mach_timebase_info(&MachInfo);
if (MachInfo.numer == MachInfo.denom)
return &monotonic_simplified;
return &monotonic_full;
return &steady_simplified;
return &steady_full;
}
#pragma GCC visibility pop
monotonic_clock::time_point
monotonic_clock::now()
steady_clock::time_point
steady_clock::now()
{
static FP fp = init_monotonic_clock();
static FP fp = init_steady_clock();
return time_point(duration(fp()));
}
@@ -109,12 +109,12 @@ monotonic_clock::now()
// _POSIX_MONOTONIC_CLOCK and fall back to something else if those
// don't exist.
// Warning: If this is not truly monotonic, then it is non-conforming. It is
// Warning: If this is not truly steady, then it is non-conforming. It is
// better for it to not exist and have the rest of libc++ use system_clock
// instead.
monotonic_clock::time_point
monotonic_clock::now()
steady_clock::time_point
steady_clock::now()
{
struct timespec tp;
if (0 != clock_gettime(CLOCK_MONOTONIC, &tp))