libretro.drivers.perf.driver¶

Protocol definition for the performance counter interface.

See also

libretro.api.perf: The matching ctypes types and callback definitions.

Classes

PerfDriver

Protocol for drivers that expose the libretro performance-counter interface.

class PerfDriver[source]¶

Bases: Protocol

Protocol for drivers that expose the libretro performance-counter interface.

See also

libretro.api.perf: The matching ctypes types and callback definitions.

abstractmethod get_time_usec()[source]¶

Return the current wall-clock time in microseconds.

See also

retro_perf_get_time_usec_t: The C function pointer type whose signature this method implements.

Return type:: int

abstractmethod get_cpu_features()[source]¶

Return a bitmask of CPU features available to the core.

See also

CpuFeatures: Bit flags describing each supported CPU feature.

Return type:: CpuFeatures

abstractmethod get_perf_counter()[source]¶

Return the current value of the high-resolution performance counter.

Units are driver-defined but consistent within a single process.

See also

retro_perf_get_counter_t: The C function pointer type whose signature this method implements.

Return type:: int

abstractmethod perf_register(counter)[source]¶

Parameters:: counter (retro_perf_counter) – The counter struct to register.

See also

retro_perf_register_t: The C function pointer type whose signature this method implements.

Return type:: None

abstractmethod perf_start(counter)[source]¶

Start measuring a previously registered performance counter.

Parameters:: counter (retro_perf_counter) – The counter to start.

See also

retro_perf_start_t: The C function pointer type whose signature this method implements.

Return type:: None

abstractmethod perf_stop(counter)[source]¶

Stop measuring a previously started performance counter.

Parameters:: counter (retro_perf_counter) – The counter to stop.

See also

retro_perf_stop_t: The C function pointer type whose signature this method implements.

Return type:: None

abstractmethod perf_log()[source]¶

Emit accumulated performance-counter measurements to the driver’s log sink.

See also

retro_perf_log_t: The C function pointer type whose signature this method implements.

Return type:: None

__init__(*args, **kwargs)¶

classmethod __new__(*args, **kwargs)¶