forked from NG-SD-Plugins/PowerTools
59 lines
2 KiB
Python
59 lines
2 KiB
Python
import time
|
|
|
|
class Plugin:
|
|
CPU_COUNT = 8
|
|
|
|
# call from main_view.html with setCPUs(onclick_event) or call_plugin_method("set_cpus", count)
|
|
async def set_cpus(self, count) -> int:
|
|
print("Setting CPUs")
|
|
with open("/home/deck/PowerTools.log", "a") as f:
|
|
f.write(f"Setting {count} CPUs to active\n")
|
|
f.flush()
|
|
count = min(int(count), self.CPU_COUNT)
|
|
# never touch cpu0, since it's special
|
|
for cpu in range(1, count):
|
|
f.write(f"Setting CPU {cpu} to online\n")
|
|
enable_cpu(cpu)
|
|
for cpu in range(count, self.CPU_COUNT):
|
|
f.write(f"Setting CPU {cpu} to offline\n")
|
|
disable_cpu(cpu)
|
|
return self.CPU_COUNT
|
|
|
|
async def get_cpus(self) -> int:
|
|
online_count = 1 # cpu0 is always online
|
|
for cpu in range(1, self.CPU_COUNT):
|
|
online_count += int(status_cpu(cpu))
|
|
return online_count
|
|
|
|
# Asyncio-compatible long-running code, executed in a task when the plugin is loaded
|
|
async def _main(self):
|
|
with open("/home/deck/PowerTools.log", "w") as f:
|
|
f.write(f"Main loop\n")
|
|
pass
|
|
|
|
|
|
# these are stateless (well, the state is not saved internally) functions, so there's no need for these to be called like a class method
|
|
|
|
def cpu_online_path(cpu_number: int) -> str:
|
|
return f"/sys/devices/system/cpu/cpu{cpu_number}/online"
|
|
|
|
def write_to_sys(path, value: int):
|
|
with open(path, mode="w") as f:
|
|
f.write(str(value))
|
|
|
|
def read_from_sys(path):
|
|
with open(path, mode="r") as f:
|
|
return f.read(1)
|
|
|
|
def enable_cpu(cpu_number: int):
|
|
filepath = cpu_online_path(cpu_number)
|
|
write_to_sys(filepath, 1)
|
|
|
|
def disable_cpu(cpu_number: int):
|
|
filepath = cpu_online_path(cpu_number)
|
|
write_to_sys(filepath, 0)
|
|
|
|
def status_cpu(cpu_number: int) -> bool:
|
|
filepath = cpu_online_path(cpu_number)
|
|
return read_from_sys(filepath) == "1"
|