58 lines
2 KiB
Python
58 lines
2 KiB
Python
import time
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class Plugin:
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CPU_COUNT = 8
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# call from main_view.html with setCPUs(onclick_event) or call_plugin_method("set_cpus", count)
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async def set_cpus(self, count) -> int:
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print("Setting CPUs")
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with open("/home/deck/PowerTools.log", "a") as f:
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f.write(f"Setting {count} CPUs to active\n")
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f.flush()
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count = min(int(count), self.CPU_COUNT)
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# never touch cpu0, since it's special
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for cpu in range(1, count):
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f.write(f"Setting CPU {cpu} to online\n")
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enable_cpu(cpu)
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for cpu in range(count, self.CPU_COUNT):
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f.write(f"Setting CPU {cpu} to offline\n")
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disable_cpu(cpu)
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return self.CPU_COUNT
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async def get_cpus(self) -> int:
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online_count = 1 # cpu0 is always online
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for cpu in range(1, self.CPU_COUNT):
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online_count += int(status_cpu(cpu))
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return online_count
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# Asyncio-compatible long-running code, executed in a task when the plugin is loaded
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async def _main(self):
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with open("/home/deck/PowerTools.log", "w") as f:
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f.write(f"Main loop\n")
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pass
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# 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
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def cpu_online_path(cpu_number: int) -> str:
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return f"/sys/devices/system/cpu/cpu{cpu_number}/online"
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def write_to_sys(path, value: int):
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with open(path, mode="w") as f:
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f.write(str(value))
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def read_from_sys(path):
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with open(path, mode="r") as f:
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return f.read(1)
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def enable_cpu(cpu_number: int):
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filepath = cpu_online_path(cpu_number)
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write_to_sys(filepath, 1)
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def disable_cpu(cpu_number: int):
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filepath = cpu_online_path(cpu_number)
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write_to_sys(filepath, 0)
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def status_cpu(cpu_number: int) -> bool:
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filepath = cpu_online_path(cpu_number)
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return read_from_sys(filepath) == "1"
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