DSSContext disposal: just mark it with CFFI's gc function; works great.

Doing this, all the user needs to do is keep the ctx pointer reference alive to keep the context alive. No need to further complicate tracking it.

Author: PMeira

dss/IDSS.py

@@ -322,7 +322,7 @@ def NewContext(self) -> Self:
         '''
         ffi = self._api_util.ffi
         lib = self._api_util.lib_unpatched
-        new_ctx = lib.ctx_New()
+        new_ctx = ffi.gc(lib.ctx_New(), lib.ctx_Dispose)
         new_api_util = CffiApiUtil(ffi, lib, new_ctx)
         return IDSS(new_api_util)
 

dss/_cffi_api_util.py

@@ -205,12 +205,12 @@ def __init__(self, ffi, lib, ctx=None):
         CffiApiUtil._ADV_TYPES = self.lib.DSS_Get_EnableArrayDimensions()
 
 
-    def __delete__(self):
-        if self.ctx is None:
-            return
+    # def __delete__(self):
+    #     if self.ctx is None:
+    #         return
 
-        if self.lib.ctx_Get_Prime() != self.ctx and self.owns_ctx:
-            self.lib.ctx_Dispose(self.ctx)
+    #     if self.lib.ctx_Get_Prime() != self.ctx and self.owns_ctx:
+    #         self.lib.ctx_Dispose(self.ctx)
 
     def init_buffers(self):
         tmp_string_pointers = (self.ffi.new('char****'), self.ffi.new('int32_t**'))