From 199264441fb966752d44df546dcb2015f6c273e5 Mon Sep 17 00:00:00 2001
From: Pierre Gimalac <pierre.gimalac@datadoghq.com>
Date: Thu, 22 Aug 2024 16:48:31 +0200
Subject: [PATCH] feat: parse StartCode, EndCode, and StartStack in
 /proc/pid/stat

Signed-off-by: Pierre Gimalac <pierre.gimalac@datadoghq.com>
---
 proc_stat.go      | 12 +++++++++---
 proc_stat_test.go |  3 +++
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/proc_stat.go b/proc_stat.go
index 06a8d931c..3328556bd 100644
--- a/proc_stat.go
+++ b/proc_stat.go
@@ -101,6 +101,12 @@ type ProcStat struct {
 	RSS int
 	// Soft limit in bytes on the rss of the process.
 	RSSLimit uint64
+	// The address above which program text can run.
+	StartCode uint64
+	// The address below which program text can run.
+	EndCode uint64
+	// The address of the start (i.e., bottom) of the stack.
+	StartStack uint64
 	// CPU number last executed on.
 	Processor uint
 	// Real-time scheduling priority, a number in the range 1 to 99 for processes
@@ -177,9 +183,9 @@ func (p Proc) Stat() (ProcStat, error) {
 		&s.VSize,
 		&s.RSS,
 		&s.RSSLimit,
-		&ignoreUint64,
-		&ignoreUint64,
-		&ignoreUint64,
+		&s.StartCode,
+		&s.EndCode,
+		&s.StartStack,
 		&ignoreUint64,
 		&ignoreUint64,
 		&ignoreUint64,
diff --git a/proc_stat_test.go b/proc_stat_test.go
index 8abd67f60..6cfa1cc42 100644
--- a/proc_stat_test.go
+++ b/proc_stat_test.go
@@ -55,6 +55,9 @@ func TestProcStat(t *testing.T) {
 		have uint64
 	}{
 		{name: "RSS Limit", want: 18446744073709551615, have: s.RSSLimit},
+		{name: "Start Code", want: 4194304, have: s.StartCode},
+		{name: "End Code", want: 6294284, have: s.EndCode},
+		{name: "Start Stack", want: 140736914091744, have: s.StartStack},
 		{name: "delayacct_blkio_ticks", want: 31, have: s.DelayAcctBlkIOTicks},
 	} {
 		if test.want != test.have {