From 5cfe482ffc3dd8f99f9ea79ed50fef14e6fa8ad1 Mon Sep 17 00:00:00 2001
From: roccowong95 <roccowong95@outlook.com>
Date: Tue, 23 Apr 2019 19:13:54 +0800
Subject: [PATCH] [process io][linux] add ReadChars and WriteChars to
 IOCounterStat, collected from /proc/${pid}/io rchar and wchar

---
 process/process.go       | 2 ++
 process/process_linux.go | 4 ++++
 2 files changed, 6 insertions(+)

diff --git a/process/process.go b/process/process.go
index a9d10e0..0140aa2 100644
--- a/process/process.go
+++ b/process/process.go
@@ -70,6 +70,8 @@ type IOCountersStat struct {
 	WriteCount uint64 `json:"writeCount"`
 	ReadBytes  uint64 `json:"readBytes"`
 	WriteBytes uint64 `json:"writeBytes"`
+	ReadChars  uint64 `json:"readChars"`
+	WriteChars uint64 `json:"writeChars"`
 }
 
 type NumCtxSwitchesStat struct {
diff --git a/process/process_linux.go b/process/process_linux.go
index 8ae99ff..d58c56f 100644
--- a/process/process_linux.go
+++ b/process/process_linux.go
@@ -950,6 +950,10 @@ func (p *Process) fillFromIOWithContext(ctx context.Context) (*IOCountersStat, e
 			ret.ReadBytes = t
 		case "write_bytes":
 			ret.WriteBytes = t
+		case "rchar":
+			ret.ReadChars = t
+		case "wchar":
+			ret.WriteChars = t
 		}
 	}