Began hw4/task1. Created functions.

hw4/task1/Cargo.toml

@@ -0,0 +1,7 @@
+[package]
+name = "task1"
+version = "0.1.0"
+authors = ["Joshua Rutschmann <joshua.rutschmann@gmx.de>"]
+
+[dependencies]
+procinfo = "^0.4.2"

hw4/task1/src/main.rs

@@ -0,0 +1,9 @@
+extern crate procinfo;
+
+mod readproc;
+mod pstree;
+
+fn main() {
+    println!("Hello, world!");
+    println!("{:?}", readproc::self_pids());
+}

hw4/task1/src/readproc.rs

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+use procinfo::pid::Stat;
+use procinfo::pid;
+
+pub fn self_pids() -> Result<(i32, i32), &'static str>{
+    match pid::stat_self() {
+        Ok(stat) => { Ok((stat.pid, stat.ppid)) }
+        Err(_) => { Err("Fehler") }
+    }
+}
+
+pub fn get_pid_command(pid: i32) -> Result<String, &'static str> {
+    match pid::stat(pid) {
+        Ok(stat) => { Ok(stat.command) }
+        Err(_) => { Err("Fehler") }
+    }
+}
+
+pub fn get_last_created_command() -> Result<String, &'static str> {
+    match pid::stat_self() {
+        Ok(stat) => { Ok(stat.command) }
+        Err(_) => { Err("Fehler") }
+    }
+
+}
+
+pub fn get_thread_count(pid: i32) -> Result<u32, &'static str> {
+    match pid::stat(pid) {
+        Ok(stat) => { Ok(stat.num_threads as u32) }
+        Err(_) => { Err("Fehler") }
+    }
+}