[issue-1357] manually allocating increasing buffer

load/load_windows.go

@@ -11,7 +11,7 @@ import (
 	"time"
 
 	"github.com/shirou/gopsutil/v3/internal/common"
-	"github.com/shirou/gopsutil/v3/internal/procstats"
+	"github.com/shirou/gopsutil/v3/procstats"
 )
 
 var (

procstats/procstats_windows.go

@@ -187,30 +187,34 @@ func GetSystemProcessInformation() (*SystemProcessInformationWalk, error) {
 	var (
 		oneKb     uint32 = 1024
 		allocKb   uint32 = 1
-		allocBytes uint32 = allocKb * oneKb
 		buffer    []byte
 		usedBytes uint32
 	)
 
+	// iterating instead of calling common.CallWithExpandingBuffer hangs forever
+	for {
+		var allocBytes uint32 = allocKb * oneKb
 		buffer = make([]byte, allocBytes)
 
-	st := common.CallWithExpandingBuffer(
+		st := common.NtQuerySystemInformation(
-		func() common.NtStatus {
-			return common.NtQuerySystemInformation(
 			windows.SystemProcessInformation,
 			&buffer[0],
 			allocBytes,
 			&usedBytes,
 		)
-		},
+
-		&buffer,
+		if st == common.NtStatus(windows.STATUS_INFO_LENGTH_MISMATCH) {
-		&usedBytes,
+			allocKb *= 2
-	)
+			continue
+		}
 
 		if st.IsError() {
 			return nil, st.Error()
 		}
 
+		break
+	}
+
 	return &SystemProcessInformationWalk{
 		SizeInBytes: usedBytes,
 		Offset:      0,