future proofing against glob order of file

backend-simulators/pim/pim-simulator/src/bin/pim-simulator/main.rs

@@ -1,4 +1,4 @@
-use anyhow::{Context, Result, bail};
+use anyhow::{bail, Context, Result};
 use clap::Parser;
 use glob::glob;
 use pimcore::json_to_instruction::json_to_executor;
@@ -55,7 +55,6 @@ fn main() -> Result<()> {
     Ok(())
 }
 
-
 fn populate_crossbar(args: &Args, executor: &mut pimcore::Executable) {
     let num_cores = executor.cpu_mut().num_core();
 
@@ -94,12 +93,10 @@ fn populate_crossbar(args: &Args, executor: &mut pimcore::Executable) {
                     .execute_store(&bytes)
                     .unwrap();
             }
-
         }
     }
 }
 
-
 fn dump_memory(mut executor: pimcore::Executable, args: &Args) -> Result<()> {
     let dumps: Vec<(i32, i32)> = args
         .dump
@@ -171,12 +168,18 @@ fn retrive_cores(args: &Args) -> Result<Vec<Value>, anyhow::Error> {
     } else if let Some(folder) = args.folder.as_ref() {
         let pattern = folder.join("core*.json");
         let pattern_str = pattern.to_str().context("Invalid path encoding")?;
-        let paths: Vec<_> = glob(pattern_str)?.collect();
+        let mut paths: Vec<_> = glob(pattern_str)?.map(|x| x.unwrap()).collect();
+        paths.sort_by_cached_key(|x| {
+            let mut x = x.file_stem().expect("Extracting the stem").to_str().expect("File not utf-8");
+            x = &x[5..];
+            x.parse::<i32>().unwrap()
+        });
+
         if paths.is_empty() {
             bail!("No core*.json files found in {:?}", folder);
         }
         for entry in paths {
-            let path = entry?;
+            let path = entry;
             let content = fs::read_to_string(&path)
                 .with_context(|| format!("Failed to read core file: {:?}", path))?;
             let json: Value = serde_json::from_str(&content)