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Merged
hexagonal-sun merged 2 commits into from
Apr 3, 2026
Merged

More proc_pid_stat memory reporting #277

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5dd4bb2
proc_pid_stat add processor and num_threads
arihant2math Mar 30, 2026
5da64ab
memory info in /proc/pid/stat
arihant2math Mar 31, 2026
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8 changes: 8 additions & 0 deletions libkernel/src/memory/proc_vm/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -84,10 +84,18 @@ impl<AS: UserAddressSpace> ProcessVM<AS> {
}
}

pub fn mm(&self) -> &MemoryMap<AS> {
&self.mm
}

pub fn mm_mut(&mut self) -> &mut MemoryMap<AS> {
&mut self.mm
}

pub fn start_brk(&self) -> VA {
self.brk.start_address()
}

pub fn current_brk(&self) -> VA {
self.brk.end_address()
}
Expand Down
59 changes: 50 additions & 9 deletions src/drivers/fs/proc/task/task_file.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -103,6 +103,41 @@ Threads:\t{tasks}\n",
TaskFileType::Comm => format!("{name}\n", name = name.as_str()),
TaskFileType::State => format!("{state}\n"),
TaskFileType::Stat => {
let vm = task.vm.lock_save_irq();

let mut vsize = 0;
let mut startcode = 0;
let mut endcode = 0;
let mut startstack = 0;
let mut start_data = 0;
let mut end_data = 0;

for vma in vm.mm().iter_vmas() {
let start = vma.region().start_address().value();
let end = vma.region().end_address().value();
vsize += vma.region().size();

if vma.name() == "[stack]" {
startstack = start;
} else if vma.permissions().execute {
if startcode == 0 || start < startcode {
startcode = start;
}
if end > endcode {
endcode = end;
}
} else if vma.permissions().write && !vma.name().starts_with('[') {
if start_data == 0 || start < start_data {
start_data = start;
}
if end > end_data {
end_data = end;
}
}
}

let start_brk = vm.start_brk().value();

let mut output = String::new();
output.push_str(&format!("{} ", task.process.tgid.value())); // pid
output.push_str(&format!("({}) ", name.as_str())); // comm
Expand Down Expand Up @@ -130,15 +165,15 @@ Threads:\t{tasks}\n",
output.push_str(&format!("{} ", 0)); // cstime
output.push_str(&format!("{} ", *task.process.priority.lock_save_irq())); // priority
output.push_str(&format!("{} ", 0)); // nice
output.push_str(&format!("{} ", 0)); // num_threads
output.push_str(&format!("{} ", task.process.tasks.lock_save_irq().len())); // num_threads
output.push_str(&format!("{} ", 0)); // itrealvalue
output.push_str(&format!("{} ", 0)); // starttime
output.push_str(&format!("{} ", 0)); // vsize
output.push_str(&format!("{vsize} ")); // vsize
output.push_str(&format!("{} ", 0)); // rss
output.push_str(&format!("{} ", 0)); // rsslim
output.push_str(&format!("{} ", 0)); // startcode
output.push_str(&format!("{} ", 0)); // endcode
output.push_str(&format!("{} ", 0)); // startstack
output.push_str(&format!("{startcode} ")); // startcode
output.push_str(&format!("{endcode} ")); // endcode
output.push_str(&format!("{startstack} ")); // startstack
output.push_str(&format!("{} ", 0)); // kstkesp
output.push_str(&format!("{} ", 0)); // kstkeip
output.push_str(&format!("{} ", 0)); // signal
Expand All @@ -149,15 +184,21 @@ Threads:\t{tasks}\n",
output.push_str(&format!("{} ", 0)); // nswap
output.push_str(&format!("{} ", 0)); // cnswap
output.push_str(&format!("{} ", 0)); // exit_signal
output.push_str(&format!("{} ", 0)); // processor
output.push_str(&format!(
"{} ",
task.sched_data
.lock_save_irq()
.as_ref()
.map_or(0, |s| s.last_cpu)
)); // processor
output.push_str(&format!("{} ", 0)); // rt_priority
output.push_str(&format!("{} ", 0)); // policy
output.push_str(&format!("{} ", 0)); // delayacct_blkio_ticks
output.push_str(&format!("{} ", 0)); // guest_time
output.push_str(&format!("{} ", 0)); // cguest_time
output.push_str(&format!("{} ", 0)); // start_data
output.push_str(&format!("{} ", 0)); // end_data
output.push_str(&format!("{} ", 0)); // start_brk
output.push_str(&format!("{start_data} ")); // start_data
output.push_str(&format!("{end_data} ")); // end_data
output.push_str(&format!("{start_brk} ")); // start_brk
output.push_str(&format!("{} ", 0)); // arg_start
output.push_str(&format!("{} ", 0)); // arg_end
output.push_str(&format!("{} ", 0)); // env_start
Expand Down
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