91 lines
2.9 KiB
Rust
91 lines
2.9 KiB
Rust
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use collections::{String, Vec};
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use core::str;
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use context;
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use syscall::error::Result;
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pub fn resource() -> Result<Vec<u8>> {
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let mut string = format!("{:<6}{:<6}{:<6}{:<6}{:<6}{:<8}{}\n",
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"PID",
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"PPID",
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"UID",
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"GID",
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"STAT",
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"MEM",
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"NAME");
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{
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let contexts = context::contexts();
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for (_id, context_lock) in contexts.iter() {
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let context = context_lock.read();
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let mut memory = 0;
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if let Some(ref kfx) = context.kstack {
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memory += kfx.len();
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}
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if let Some(ref kstack) = context.kstack {
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memory += kstack.len();
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}
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for shared_mem in context.image.iter() {
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shared_mem.with(|mem| {
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memory += mem.size();
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});
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}
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if let Some(ref heap) = context.heap {
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heap.with(|heap| {
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memory += heap.size();
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});
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}
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if let Some(ref stack) = context.stack {
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memory += stack.size();
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}
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let memory_string = if memory >= 1024 * 1024 * 1024 {
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format!("{} GB", memory / 1024 / 1024 / 1024)
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} else if memory >= 1024 * 1024 {
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format!("{} MB", memory / 1024 / 1024)
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} else if memory >= 1024 {
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format!("{} KB", memory / 1024)
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} else {
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format!("{} B", memory)
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};
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let mut stat_string = String::new();
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if context.stack.is_some() {
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stat_string.push('U');
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} else {
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stat_string.push('K');
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}
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match context.status {
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context::Status::Runnable => {
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stat_string.push('R');
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},
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context::Status::Blocked => if context.wake.is_some() {
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stat_string.push('S');
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} else {
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stat_string.push('B');
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},
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context::Status::Exited(_status) => {
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stat_string.push('Z');
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}
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}
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if context.running {
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stat_string.push('+');
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}
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let name_bytes = context.name.lock();
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let name = str::from_utf8(&name_bytes).unwrap_or("");
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string.push_str(&format!("{:<6}{:<6}{:<6}{:<6}{:<6}{:<8}{}\n",
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context.id,
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context.ppid,
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context.euid,
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context.egid,
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stat_string,
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memory_string,
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name));
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}
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}
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Ok(string.into_bytes())
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}
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