[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

@@ -185,30 +185,34 @@ func WalkThreads(proc *SYSTEM_PROCESS_INFORMATION, fn func(t SYSTEM_THREAD_INFOR
 // the returned structure has methods to walk through the structure
 func GetSystemProcessInformation() (*SystemProcessInformationWalk, error) {
 	var (
-		oneKb      uint32 = 1024
+		oneKb     uint32 = 1024
-		allocKb    uint32 = 1
+		allocKb   uint32 = 1
-		allocBytes uint32 = allocKb * oneKb
+		buffer    []byte
-		buffer     []byte
+		usedBytes uint32
-		usedBytes  uint32
 	)
 
-	buffer = make([]byte, allocBytes)
+	// iterating instead of calling common.CallWithExpandingBuffer hangs forever
-
+	for {
-	st := common.CallWithExpandingBuffer(
+		var allocBytes uint32 = allocKb * oneKb
-		func() common.NtStatus {
+		buffer = make([]byte, allocBytes)
-			return common.NtQuerySystemInformation(
+
-				windows.SystemProcessInformation,
+		st := common.NtQuerySystemInformation(
-				&buffer[0],
+			windows.SystemProcessInformation,
-				allocBytes,
+			&buffer[0],
-				&usedBytes,
+			allocBytes,
-			)
+			&usedBytes,
-		},
+		)
-		&buffer,
+
-		&usedBytes,
+		if st == common.NtStatus(windows.STATUS_INFO_LENGTH_MISMATCH) {
-	)
+			allocKb *= 2
+			continue
+		}
+
+		if st.IsError() {
+			return nil, st.Error()
+		}
 
-	if st.IsError() {
+		break
-		return nil, st.Error()
 	}
 
 	return &SystemProcessInformationWalk{