Streamly.Internal.Data.Time.Clock.Type
get time from the system clock
Clock types. A clock may be system-wide (that is, visible to all processes) or per-process (measuring time that is meaningful only within a process). All implementations shall support CLOCK_REALTIME. (The only suspend-aware monotonic is CLOCK_BOOTTIME on Linux.)
Constructors
Monotonic | The identifier for the system-wide monotonic clock, which is defined as
a clock measuring real time, whose value cannot be set via
|
Realtime | The identifier of the system-wide clock measuring real time. For this
clock, the value returned by |
ProcessCPUTime | The identifier of the CPU-time clock associated with the calling
process. For this clock, the value returned by |
ThreadCPUTime | The identifier of the CPU-time clock associated with the calling OS
thread. For this clock, the value returned by |
MonotonicRaw | (since Linux 2.6.28; Linux and Mac OSX) Similar to CLOCK_MONOTONIC, but provides access to a raw hardware-based time that is not subject to NTP adjustments or the incremental adjustments performed by adjtime(3). |
MonotonicCoarse | (since Linux 2.6.32; Linux and Mac OSX) A faster but less precise version of CLOCK_MONOTONIC. Use when you need very fast, but not fine-grained timestamps. |
Uptime | (since Linux 2.6.39; Linux and Mac OSX) Identical to CLOCK_MONOTONIC, except it also includes any time that the system is suspended. This allows applications to get a suspend-aware monotonic clock without having to deal with the complications of CLOCK_REALTIME, which may have discontinuities if the time is changed using settimeofday(2). |
RealtimeCoarse | (since Linux 2.6.32; Linux-specific) A faster but less precise version of CLOCK_REALTIME. Use when you need very fast, but not fine-grained timestamps. |