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import re
from pathlib import Path
import psutil
from rich import box
from rich.panel import Panel
from rich.table import Table
from rich.text import Text
from textual.widget import Widget
from .braille_stream import BrailleStream
def val_to_color(val: float, minval: float, maxval: float) -> str:
t = (val - minval) / (maxval - minval)
k = round(t * 3)
return {0: "blue", 1: "cyan", 2: "cyan", 3: "green"}[k]
# https://stackoverflow.com/a/312464/353337
def chunks(lst, n):
for i in range(0, len(lst), n):
yield lst[i : i + n]
# https://stackoverflow.com/a/6473724/353337
def transpose(lst):
return list(map(list, zip(*lst)))
def flatten(lst):
return [item for sublist in lst for item in sublist]
def get_cpu_model():
# cpuinfo does computation in addition to reading data, see
# <https://github.com/workhorsy/py-cpuinfo/issues/155#issuecomment-678923252>.
# Try to work around this.
# TODO keep an eye on the above bug.
try:
# On Linux, the file contains lines like
# ```
# model name : Intel(R) Core(TM) i5-8350U CPU @ 1.70GHz
# ```
with open("/proc/cpuinfo") as f:
content = f.read()
m = re.search(r"model name\t: (.*)", content)
model_name = m.group(1)
except Exception:
import cpuinfo
model_name = cpuinfo.get_cpu_info()["brand_raw"]
return model_name
def get_current_temps():
# First try manually reading the temperatures. (pyutil is slow.)
for key in ["coretemp", "k10temp"]:
path = Path(f"/sys/devices/platform/{key}.0/hwmon/hwmon6/")
if not path.is_dir():
continue
k = 1
temps = []
while True:
file = path / f"temp{k}_input"
if not file.exists():
break
with open(file) as f:
content = f.read()
temps.append(int(content) / 1000)
k += 1
return temps
# Not try psutil.sensors_temperatures().
# Slow, see <https://github.com/giampaolo/psutil/issues/2082>.
try:
temps = psutil.sensors_temperatures()
except AttributeError:
return None
else:
# coretemp: intel, k10temp: amd
# <https://github.com/nschloe/tiptop/issues/37>
for key in ["coretemp", "k10temp"]:
if key not in temps:
continue
return [t.current for t in temps[key]]
return None
def get_current_freq():
# psutil.cpu_freq() is slow, so first try something else:
# <https://github.com/nschloe/tiptop/issues/37>
candidates = [
"/sys/devices/system/cpu/cpufreq/policy0/scaling_cur_freq",
"/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq",
]
for candidate in candidates:
file = Path(candidate)
if file.exists():
with open(file) as f:
content = f.read()
return int(content) / 1000
c = psutil.cpu_freq()
if hasattr(c, "current"):
cpu_freq = c.current
if psutil.__version__ == "5.9.0" and cpu_freq < 10:
# Work around <https://github.com/giampaolo/psutil/issues/2049>
cpu_freq *= 1000
return cpu_freq
return None
class CPU(Widget):
def on_mount(self):
self.width = 0
self.height = 0
# self.max_graph_width = 200
self.num_cores = psutil.cpu_count(logical=False)
num_threads = psutil.cpu_count(logical=True)
# 8 threads, 4 cores -> [[0, 4], [1, 5], [2, 6], [3, 7]]
assert num_threads % self.num_cores == 0
self.core_threads = transpose(list(chunks(range(num_threads), self.num_cores)))
self.cpu_total_stream = BrailleStream(50, 7, 0.0, 100.0)
self.thread_load_streams = [
BrailleStream(10, 1, 0.0, 100.0)
for _ in range(num_threads)
# BlockCharStream(10, 1, 0.0, 100.0) for _ in range(num_threads)
]
temps = get_current_temps()
if temps is None:
self.has_cpu_temp = False
self.has_core_temps = False
else:
self.has_cpu_temp = len(temps) > 0
self.has_core_temps = len(temps) == 1 + self.num_cores
temps = get_current_temps()
temp_low = 30.0
# TODO read from file
temp_high = 100.0
if self.has_cpu_temp:
self.temp_total_stream = BrailleStream(
50, 7, temp_low, temp_high, flipud=True
)
if self.has_core_temps:
self.core_temp_streams = [
BrailleStream(5, 1, temp_low, temp_high)
for _ in range(self.num_cores)
]
self.has_fan_rpm = False
try:
fan_current = list(psutil.sensors_fans().values())[0][0].current
except (AttributeError, IndexError):
pass
else:
self.has_fan_rpm = True
fan_low = 0
# Sometimes, psutil/computers will incorrectly report a fan
# speed of 2 ** 16 - 1; dismiss that.
if fan_current == 65535:
fan_current = 1
fan_high = max(fan_current, 1)
self.fan_stream = BrailleStream(50, 1, fan_low, fan_high)
box_title = ", ".join(
[
f"{self.num_cores} core" + ("s" if self.num_cores > 1 else ""),
f"{num_threads} thread" + ("s" if num_threads > 1 else ""),
]
)
self.info_box = Panel(
"",
title=box_title,
title_align="left",
subtitle=None,
subtitle_align="left",
border_style="white",
box=box.SQUARE,
expand=False,
)
self.panel = Panel(
"",
title=f"[b]cpu[/] - {get_cpu_model()}",
title_align="left",
border_style="white",
box=box.SQUARE,
)
# immediately collect data to refresh info_box_width
self.collect_data()
self.set_interval(2.0, self.collect_data)
def collect_data(self):
# CPU loads
self.cpu_total_stream.add_value(psutil.cpu_percent())
#
load_per_thread = psutil.cpu_percent(percpu=True)
assert isinstance(load_per_thread, list)
for stream, load in zip(self.thread_load_streams, load_per_thread):
stream.add_value(load)
# CPU temperatures
if self.has_cpu_temp or self.has_core_temps:
temps = get_current_temps()
assert temps is not None
if self.has_cpu_temp:
self.temp_total_stream.add_value(temps[0])
if self.has_core_temps:
for stream, temp in zip(self.core_temp_streams, temps[1:]):
stream.add_value(temp)
lines_cpu = self.cpu_total_stream.graph
current_val_string = f"{self.cpu_total_stream.values[-1]:5.1f}%"
lines0 = lines_cpu[0][: -len(current_val_string)] + current_val_string
lines_cpu = [lines0] + lines_cpu[1:]
#
cpu_total_graph = "[blue]" + "\n".join(lines_cpu) + "[/]\n"
#
if self.has_cpu_temp:
lines_temp = self.temp_total_stream.graph
current_val_string = f"{round(self.temp_total_stream.values[-1]):3d}°C"
lines0 = lines_temp[-1][: -len(current_val_string)] + current_val_string
lines_temp = lines_temp[:-1] + [lines0]
cpu_total_graph += "[magenta]" + "\n".join(lines_temp) + "[/]"
# construct right info box
self._refresh_info_box(load_per_thread)
t = Table(expand=True, show_header=False, padding=0, box=None)
# Add ratio 1 to expand that column as much as possible
t.add_column("graph", no_wrap=True, ratio=1)
t.add_column("box", no_wrap=True, justify="left", vertical="middle")
t.add_row(cpu_total_graph, self.info_box)
if self.has_fan_rpm:
fan_current = list(psutil.sensors_fans().values())[0][0].current
# See command above
if fan_current == 65535:
fan_current = self.fan_stream.maxval
if fan_current > self.fan_stream.maxval:
# TODO There should be a method that also rewrites all previous values
self.fan_stream.maxval = fan_current
self.fan_stream.add_value(fan_current)
string = f" {fan_current}rpm"
graph = (
"[cyan]" + self.fan_stream.graph[-1][: -len(string)] + string + "[/]"
)
t.add_row(graph, "")
self.panel.renderable = t
# textual method
self.refresh()
def _refresh_info_box(self, load_per_thread):
lines = []
for core_id, thread_ids in enumerate(self.core_threads):
line = []
for i in thread_ids:
color = val_to_color(load_per_thread[i], 0.0, 100.0)
line.append(
f"[{color}]"
+ f"{self.thread_load_streams[i].graph[0]}"
+ f"{round(self.thread_load_streams[i].values[-1]):3d}%"
+ "[/]"
)
if self.has_core_temps:
stream = self.core_temp_streams[core_id]
val = stream.values[-1]
color = "magenta" if val < 70.0 else "red"
line.append(
f"[{color}]{stream.graph[0]} {round(stream.values[-1])}°C[/]"
)
lines.append(" ".join(line))
self.info_box.renderable = "\n".join(lines)
cpu_freq = get_current_freq()
if cpu_freq is
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