From: Richard W.M. Jones <rjones@redhat.com>
Date: Tue, 21 Feb 2012 13:57:07 +0000 (+0000)
Subject: Compare job names intelligently, so "job$9" < "job$10".
X-Git-Tag: 0.0.1~14
X-Git-Url: http://git.annexia.org/?p=whenjobs.git;a=commitdiff_plain;h=28d4576308b10064eda39827c419aa33e1041041;hp=bf5d28ff726e12696717c556b3a5426384270837

Compare job names intelligently, so "job$9" < "job$10".
---

diff --git a/daemon/daemon.ml b/daemon/daemon.ml
index fd986fb..a6cc2fa 100644
--- a/daemon/daemon.ml
+++ b/daemon/daemon.ml
@@ -210,7 +210,7 @@ and reevaluate_whenjobs jobnames =
   let set = loop StringSet.empty jobnames in
   let jobnames = StringSet.elements set in
   (* Ensure the jobs always run in predictable (name) order. *)
-  let jobnames = List.sort compare jobnames in
+  let jobnames = List.sort compare_jobnames jobnames in
   List.iter run_job
     (List.map (fun jobname -> StringMap.find jobname !jobs) jobnames)
 
@@ -263,7 +263,8 @@ and schedule_next_everyjob () =
     if jobs <> [] then (
       (* Ensure the jobs always run in predictable (name) order. *)
       let jobs =
-        List.sort (fun { job_name = a } { job_name = b } -> compare a b) jobs in
+        List.sort (fun {job_name = a} {job_name = b} -> compare_jobnames a b)
+          jobs in
 
       if !debug then
         Syslog.notice "scheduling job(s) %s to run at %s"
@@ -356,5 +357,21 @@ and cleanup_job job dir =
   let cmd = sprintf "rm -rf '%s'" dir in
   ignore (Sys.command cmd)
 
+(* Intelligent comparison of job names. *)
+and compare_jobnames name1 name2 =
+  try
+    let len1 = String.length name1
+    and len2 = String.length name2 in
+    if len1 > 4 && len2 > 4 &&
+      String.sub name1 0 4 = "job$" && String.sub name2 0 4 = "job$"
+    then (
+      let i1 = int_of_string (String.sub name1 4 (len1-4)) in
+      let i2 = int_of_string (String.sub name2 4 (len2-4)) in
+      compare i1 i2
+    )
+    else raise Not_found
+  with _ ->
+    compare name1 name2
+
 let main_loop () =
   Unixqueue.run esys