//
//===----------------------------------------------------------------------===//
+#ifndef LLVM_SUPPORT_TIMEVALUE_H
+#define LLVM_SUPPORT_TIMEVALUE_H
+
#include "llvm/Support/DataTypes.h"
#include <string>
-#ifndef LLVM_SYSTEM_TIMEVALUE_H
-#define LLVM_SYSTEM_TIMEVALUE_H
-
namespace llvm {
namespace sys {
/// This class is used where a precise fixed point in time is required. The
/// value permissible by the class. MinTime is some point
/// in the distant past, about 300 billion years BCE.
/// @brief The smallest possible time value.
- static const TimeValue MinTime;
+ static TimeValue MinTime() {
+ return TimeValue ( INT64_MIN,0 );
+ }
/// A constant TimeValue representing the largest time
/// value permissible by the class. MaxTime is some point
/// in the distant future, about 300 billion years AD.
/// @brief The largest possible time value.
- static const TimeValue MaxTime;
+ static TimeValue MaxTime() {
+ return TimeValue ( INT64_MAX,0 );
+ }
/// A constant TimeValue representing the base time,
/// or zero time of 00:00:00 (midnight) January 1st, 2000.
/// @brief 00:00:00 Jan 1, 2000 UTC.
- static const TimeValue ZeroTime;
+ static TimeValue ZeroTime() {
+ return TimeValue ( 0,0 );
+ }
/// A constant TimeValue for the Posix base time which is
/// 00:00:00 (midnight) January 1st, 1970.
/// @brief 00:00:00 Jan 1, 1970 UTC.
- static const TimeValue PosixZeroTime;
+ static TimeValue PosixZeroTime() {
+ return TimeValue ( PosixZeroTimeSeconds,0 );
+ }
/// A constant TimeValue for the Win32 base time which is
/// 00:00:00 (midnight) January 1st, 1601.
/// @brief 00:00:00 Jan 1, 1601 UTC.
- static const TimeValue Win32ZeroTime;
+ static TimeValue Win32ZeroTime() {
+ return TimeValue ( Win32ZeroTimeSeconds,0 );
+ }
/// @}
/// @name Types
MILLISECONDS_PER_SECOND = 1000, ///< One Thousand
NANOSECONDS_PER_MICROSECOND = 1000, ///< One Thousand
NANOSECONDS_PER_MILLISECOND = 1000000,///< One Million
- NANOSECONDS_PER_POSIX_TICK = 100, ///< Posix tick is 100 Hz (10ms)
- NANOSECONDS_PER_WIN32_TICK = 100 ///< Win32 tick is 100 Hz (10ms)
+ NANOSECONDS_PER_WIN32_TICK = 100 ///< Win32 tick is 10^7 Hz (10ns)
};
/// @}
/// @name Constructors
/// @{
public:
+ /// \brief Default construct a time value, initializing to ZeroTime.
+ TimeValue() : seconds_(0), nanos_(0) {}
+
/// Caller provides the exact value in seconds and nanoseconds. The
/// \p nanos argument defaults to zero for convenience.
/// @brief Explicit constructor
/// Determine if \p this is greater than or equal to \p that.
/// @returns True iff *this >= that.
- /// @brief True if this >= that.
int operator >= (const TimeValue &that) const {
if ( this->seconds_ > that.seconds_ ) {
return 1;
}
/// Determines if two TimeValue objects represent the same moment in time.
- /// @brief True iff *this == that.
- /// @brief True if this == that.
+ /// @returns True iff *this == that.
int operator == (const TimeValue &that) const {
return (this->seconds_ == that.seconds_) &&
(this->nanos_ == that.nanos_);
/// Determines if two TimeValue objects represent times that are not the
/// same.
- /// @return True iff *this != that.
- /// @brief True if this != that.
+ /// @returns True iff *this != that.
int operator != (const TimeValue &that) const { return !(*this == that); }
/// Adds two TimeValue objects together.
( nanos_ / NANOSECONDS_PER_MILLISECOND );
}
- /// Converts the TimeValue into the corresponding number of "ticks" for
- /// Posix, correcting for the difference in Posix zero time.
- /// @brief Convert to unix time (100 nanoseconds since 12:00:00a Jan 1,1970)
- uint64_t toPosixTime() const {
- uint64_t result = seconds_ - PosixZeroTime.seconds_;
- result += nanos_ / NANOSECONDS_PER_POSIX_TICK;
- return result;
- }
-
/// Converts the TimeValue into the corresponding number of seconds
/// since the epoch (00:00:00 Jan 1,1970).
uint64_t toEpochTime() const {
- return seconds_ - PosixZeroTime.seconds_;
+ return seconds_ - PosixZeroTimeSeconds;
}
/// Converts the TimeValue into the corresponding number of "ticks" for
/// Win32 platforms, correcting for the difference in Win32 zero time.
- /// @brief Convert to windows time (seconds since 12:00:00a Jan 1, 1601)
+ /// @brief Convert to Win32's FILETIME
+ /// (100ns intervals since 00:00:00 Jan 1, 1601 UTC)
uint64_t toWin32Time() const {
- uint64_t result = seconds_ - Win32ZeroTime.seconds_;
+ uint64_t result = (uint64_t)10000000 * (seconds_ - Win32ZeroTimeSeconds);
result += nanos_ / NANOSECONDS_PER_WIN32_TICK;
return result;
}
/// correction for the Posix zero time.
/// @brief Convert to timespec time (ala POSIX.1b)
void getTimespecTime( uint64_t& seconds, uint32_t& nanos ) const {
- seconds = seconds_ - PosixZeroTime.seconds_;
+ seconds = seconds_ - PosixZeroTimeSeconds;
nanos = nanos_;
}
/// TimeValue and assigns that value to \p this.
/// @brief Convert seconds form PosixTime to TimeValue
void fromEpochTime( SecondsType seconds ) {
- seconds_ = seconds + PosixZeroTime.seconds_;
+ seconds_ = seconds + PosixZeroTimeSeconds;
nanos_ = 0;
this->normalize();
}
/// corresponding TimeValue and assigns that value to \p this.
/// @brief Convert seconds form Windows FILETIME to TimeValue
void fromWin32Time( uint64_t win32Time ) {
- this->seconds_ = win32Time / 10000000 + Win32ZeroTime.seconds_;
+ this->seconds_ = win32Time / 10000000 + Win32ZeroTimeSeconds;
this->nanos_ = NanoSecondsType(win32Time % 10000000) * 100;
}
/// Store the values as a <timeval>.
SecondsType seconds_;///< Stores the seconds part of the TimeVal
NanoSecondsType nanos_; ///< Stores the nanoseconds part of the TimeVal
+
+ static const SecondsType PosixZeroTimeSeconds;
+ static const SecondsType Win32ZeroTimeSeconds;
/// @}
};
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