From 4e9da25009f28f5c01cae4ebc754dc9923059d4d Mon Sep 17 00:00:00 2001
From: Dan Snyder <snyderdan46@gmail.com>
Date: Tue, 14 Jan 2025 18:30:55 -0500
Subject: [PATCH] Include visit order in stats

---
 src/server.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/server.c b/src/server.c
index f2040df..e841d4d 100644
--- a/src/server.c
+++ b/src/server.c
@@ -190,9 +190,9 @@ void aggregateStats(Process *head) {
       break;
     }
 
-    current->visited = 1;
-    current->level = depth;
     visited++;
+    current->visited = visited; // store to tag the order the process is visited
+    current->level = depth;
 
     if (depth > maxdepth) maxdepth = depth;
 
@@ -329,6 +329,7 @@ char *readProcesses(char *procdir) {
     sprintf(buffer,
             "pid=\"%d\",ppid=\"%d\",label=\"%s\",lxc=\"%d\"",
             cur->pid, cur->ppid, cur->label, cur->lxc);
+    // process specific stats
     ptr += sprintf(ptr, "process_cpu_time_seconds{%s} %f\n", buffer, (double) cur->cpuTime / clocks);
     ptr += sprintf(ptr, "process_num_threads{%s} %lu\n", buffer, cur->nThreads);
     ptr += sprintf(ptr, "process_resident_bytes{%s} %lu\n", buffer, cur->resident);
@@ -336,12 +337,15 @@ char *readProcesses(char *procdir) {
     ptr += sprintf(ptr, "process_fileio_bytes_written{%s} %lu\n", buffer, cur->written);
     ptr += sprintf(ptr, "process_fileio_bytes_read{%s} %lu\n", buffer, cur->read);
     ptr += sprintf(ptr, "process_is_kernel_process{%s} %d\n", buffer, cur->iskernel);
-    ptr += sprintf(ptr, "process_tree_depth{%s} %d\n", buffer, cur->level);
+    // cumulative fields
     ptr += sprintf(ptr, "process_cumulative_cpu_time_seconds{%s} %lu\n", buffer, cur->cCpuTime);
     ptr += sprintf(ptr, "process_cumulative_resident_bytes{%s} %lu\n", buffer, cur->cMemory);
     ptr += sprintf(ptr, "process_cumulative_swap_bytes{%s} %lu\n", buffer, cur->cSwap);
     ptr += sprintf(ptr, "process_cumulative_bytes_read{%s} %lu\n", buffer, cur->cRead);
     ptr += sprintf(ptr, "process_cumulative_bytes_written{%s} %lu\n", buffer, cur->cWrite);
+    // stats used to make flame chart
+    ptr += sprintf(ptr, "process_tree_depth{%s} %d\n", buffer, cur->level);
+    ptr += sprintf(ptr, "process_visit_index{%s} %d\n", buffer, cur->visited);
     // free and proceed
     Process *prev = cur;
     cur = cur->next;