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fix win cpu monitor run once

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Signed-off-by: 21pages <pages21@163.com>
This commit is contained in:
21pages
2023-07-24 14:17:09 +08:00
parent dc0f21298e
commit 02456280d4
6 changed files with 30 additions and 23 deletions
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11
libs/hbb_common/src/platform/windows.rs
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@@ -42,7 +42,7 @@ impl Drop for RAIIPDHQuery {
}
}
pub unsafe fn start_cpu_performance_monitor() {
pub fn start_cpu_performance_monitor() {
// Code from:
// https://learn.microsoft.com/en-us/windows/win32/perfctrs/collecting-performance-data
// https://learn.microsoft.com/en-us/windows/win32/api/pdh/nf-pdh-pdhcollectquerydataex
@@ -50,7 +50,7 @@ pub unsafe fn start_cpu_performance_monitor() {
// https://aaron-margosis.medium.com/task-managers-cpu-numbers-are-all-but-meaningless-2d165b421e43
// Therefore we should compare with Precess Explorer rather than taskManager
std::thread::spawn(|| {
let f = || unsafe {
// load avg or cpu usage, test with prime95.
// Prefer cpu usage because we can get accurate value from Precess Explorer.
// const COUNTER_PATH: &'static str = "\\System\\Processor Queue Length\0";
@@ -80,7 +80,7 @@ pub unsafe fn start_cpu_performance_monitor() {
let mut counter_value: PDH_FMT_COUNTERVALUE = std::mem::zeroed();
let event = CreateEventA(std::ptr::null_mut(), FALSE, FALSE, std::ptr::null() as _);
if event.is_null() {
log::error!("CreateEventA failed: 0x{:X}", ret);
log::error!("CreateEventA failed");
return;
}
let _event: RAIIHandle = RAIIHandle(event);
@@ -126,6 +126,11 @@ pub unsafe fn start_cpu_performance_monitor() {
queue.push_back(counter_value.u.doubleValue().clone());
recent_valid.push_back(true);
}
};
use std::sync::Once;
static ONCE: Once = Once::new();
ONCE.call_once(|| {
std::thread::spawn(f);
});
}