Add struct example and decorator

Author: r41k0u

examples/execve5.py

@@ -1,9 +1,16 @@
-from pythonbpf import bpf, map, section, bpfglobal, compile
+from pythonbpf import bpf, map, struct, section, bpfglobal, compile
 from pythonbpf.helpers import ktime, pid
 from pythonbpf.maps import PerfEventArray
 
 from ctypes import c_void_p, c_int64, c_int32, c_uint64
 
+
+@bpf
+@struct
+class data_t:
+    pid: c_uint64
+    ts: c_uint64
+
 @bpf
 @map
 def events() -> PerfEventArray:

pythonbpf/decorators.py

@@ -9,11 +9,19 @@ def bpfglobal(func):
     func._is_bpfglobal = True
     return func
 
+
 def map(func):
     """Decorator to mark a function as a BPF map."""
     func._is_map = True
     return func
 
+
+def struct(cls):
+    """Decorator to mark a class as a BPF struct."""
+    cls._is_struct = True
+    return cls
+
+
 def section(name: str):
     def wrapper(fn):
         fn._section = name