66 lines
2.6 KiB
C++
66 lines
2.6 KiB
C++
/**
|
|
******************************************************************************
|
|
* Xenia : Xbox 360 Emulator Research Project *
|
|
******************************************************************************
|
|
* Copyright 2015 Ben Vanik. All rights reserved. *
|
|
* Released under the BSD license - see LICENSE in the root for more details. *
|
|
******************************************************************************
|
|
*/
|
|
|
|
#ifndef XENIA_BASE_CLOCK_H_
|
|
#define XENIA_BASE_CLOCK_H_
|
|
|
|
#include <cstdint>
|
|
|
|
namespace xe {
|
|
|
|
class Clock {
|
|
public:
|
|
// Host ticks-per-second.
|
|
static uint64_t host_tick_frequency();
|
|
// Queries the current host tick count.
|
|
static uint64_t QueryHostTickCount();
|
|
// Host time, in FILETIME format.
|
|
static uint64_t QueryHostSystemTime();
|
|
// Queries the milliseconds since the host began.
|
|
static uint32_t QueryHostUptimeMillis();
|
|
|
|
// Guest time scalar.
|
|
static double guest_time_scalar();
|
|
// Sets the guest time scalar, adjusting tick and wall clock speed.
|
|
// Ex: 1x=normal, 2x=double speed, 1/2x=half speed.
|
|
static void set_guest_time_scalar(double scalar);
|
|
// Guest ticks-per-second.
|
|
static uint64_t guest_tick_frequency();
|
|
// Sets the guest ticks-per-second.
|
|
static void set_guest_tick_frequency(uint64_t frequency);
|
|
// Time based used for the guest system time.
|
|
static uint64_t guest_system_time_base();
|
|
// Sets the guest time base, used for computing the system time.
|
|
// By default this is the current system time.
|
|
static void set_guest_system_time_base(uint64_t time_base);
|
|
// Queries the current guest tick count, accounting for frequency adjustment
|
|
// and scaling.
|
|
static uint64_t QueryGuestTickCount();
|
|
// Queries the guest time, in FILETIME format, accounting for scaling.
|
|
static uint64_t QueryGuestSystemTime();
|
|
// Queries the milliseconds since the guest began, accounting for scaling.
|
|
static uint32_t QueryGuestUptimeMillis();
|
|
|
|
// Sets the guest tick count for the current thread.
|
|
static void SetGuestTickCount(uint64_t tick_count);
|
|
// Sets the system time for the current thread.
|
|
static void SetGuestSystemTime(uint64_t system_time);
|
|
|
|
// Scales a time duration in milliseconds, from guest time.
|
|
static uint32_t ScaleGuestDurationMillis(uint32_t guest_ms);
|
|
// Scales a time duration in 100ns ticks like FILETIME, from guest time.
|
|
static int64_t ScaleGuestDurationFileTime(int64_t guest_file_time);
|
|
// Scales a time duration represented as a timeval, from guest time.
|
|
static void ScaleGuestDurationTimeval(int32_t* tv_sec, int32_t* tv_usec);
|
|
};
|
|
|
|
} // namespace xe
|
|
|
|
#endif // XENIA_BASE_CLOCK_H_
|