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top: optimize

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This commit is contained in:
Bluemangoo
2025-03-10 18:28:45 +08:00
parent d29e05ad44
commit db8ecf5691
1 changed files with 16 additions and 17 deletions
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src/uu/top/src/header.rs
+16 -17
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@@ -35,11 +35,6 @@ extern "C" {
) -> libc::c_int;
}
#[cfg(target_os = "macos")]
fn todo() -> String {
"TODO".into()
}
fn format_memory(memory_b: u64, unit: u64) -> f64 {
ByteSize::b(memory_b).0 as f64 / unit as f64
}
@@ -55,6 +50,7 @@ pub fn get_nusers_systemd() -> uucore::error::UResult<usize> {
use uucore::error::USimpleError;
use uucore::libc::*;
// SAFETY: sd_booted to check if system is booted with systemd.
unsafe {
// systemd
if sd_booted() > 0 {
@@ -210,25 +206,28 @@ fn cpu() -> String {
interrupt_time: 0,
interrupt_count: 0,
};
// SAFETY: malloc is safe to use here. We free the memory after we are done with it. If action fails, all "time" will be 0.
unsafe {
let len = n_cpu * size_of::<SystemProcessorPerformanceInformation>();
let data = malloc(len);
let _ = NtQuerySystemInformation(
let status = NtQuerySystemInformation(
windows_sys::Wdk::System::SystemInformation::SystemProcessorPerformanceInformation,
data,
(n_cpu * size_of::<SystemProcessorPerformanceInformation>()) as u32,
std::ptr::null_mut(),
);
for i in 0..n_cpu {
let cpu = data.add(i * size_of::<SystemProcessorPerformanceInformation>())
as *const SystemProcessorPerformanceInformation;
let cpu = cpu.as_ref().unwrap();
cpu_load.idle_time += cpu.idle_time;
cpu_load.kernel_time += cpu.kernel_time;
cpu_load.user_time += cpu.user_time;
cpu_load.dpc_time += cpu.dpc_time;
cpu_load.interrupt_time += cpu.interrupt_time;
cpu_load.interrupt_count += cpu.interrupt_count;
if status == 0 {
for i in 0..n_cpu {
let cpu = data.add(i * size_of::<SystemProcessorPerformanceInformation>())
as *const SystemProcessorPerformanceInformation;
let cpu = cpu.as_ref().unwrap();
cpu_load.idle_time += cpu.idle_time;
cpu_load.kernel_time += cpu.kernel_time;
cpu_load.user_time += cpu.user_time;
cpu_load.dpc_time += cpu.dpc_time;
cpu_load.interrupt_time += cpu.interrupt_time;
cpu_load.interrupt_count += cpu.interrupt_count;
}
}
}
let total = cpu_load.idle_time
@@ -249,7 +248,7 @@ fn cpu() -> String {
//TODO: Implement for macos
#[cfg(target_os = "macos")]
fn cpu() -> String {
todo()
"TODO".into()
}
fn memory(scale_summary_mem: Option<&String>) -> String {