Add cgo directives for cursor and txn, update Go version to 1.24

Author: JkLondon

go.mod

@@ -1,5 +1,5 @@
 module github.com/erigontech/mdbx-go
 
-go 1.20
+go 1.24
 
 require github.com/ianlancetaylor/cgosymbolizer v0.0.0-20241129212102-9c50ad6b591e

mdbx/cursor.go

@@ -1,17 +1,21 @@
 package mdbx
 
-/*
-#include <stdlib.h>
-#include <stdio.h>
-#include "mdbxgo.h"
-*/
 import "C"
 import (
 	"fmt"
 	"sync"
 	"unsafe"
 )
 
+/*
+#cgo nocallback mdbxgo_cursor_get
+#cgo noescape mdbxgo_cursor_get
+#include <stdlib.h>
+#include <stdio.h>
+#include "mdbxgo.h"
+*/
+import "C"
+
 const (
 	// Flags for Cursor.Get
 	//

mdbx/txn.go

@@ -1,6 +1,12 @@
 package mdbx
 
 /*
+#cgo nocallback mdbxgo_get
+#cgo noescape mdbxgo_get
+#cgo nocallback mdbxgo_put2
+#cgo noescape mdbxgo_put2
+#cgo nocallback mdbxgo_put1
+#cgo noescape mdbxgo_put1
 #include <stdlib.h>
 #include <stdio.h>
 #include "mdbxgo.h"