fixed double free bug of sequences

ext/opencv/cvchain.cpp

@@ -67,18 +67,8 @@ define_ruby_class()
 VALUE
 rb_allocate(VALUE klass)
 {
-  CvChain *ptr = ALLOC(CvChain);
+  CvChain *ptr;
-  return Data_Wrap_Struct(klass, 0, cvchain_free, ptr);
+  return Data_Make_Struct(klass, CvChain, 0, 0, ptr);
-}
-
-void
-cvchain_free(void *ptr)
-{
-  if (ptr) {
-    CvChain *chain = (CvChain*)ptr;
-    if (chain->storage)
-      cvReleaseMemStorage(&(chain->storage));
-  }
 }
 
 VALUE

ext/opencv/cvchain.h

@@ -22,7 +22,6 @@ VALUE rb_class();
 void define_ruby_class();
 
 VALUE rb_allocate(VALUE klass);
-void cvchain_free(void *ptr);
 
 VALUE rb_initialize(int argc, VALUE *argv, VALUE self);
 VALUE rb_origin(VALUE self);

ext/opencv/cvconnectedcomp.cpp

@@ -55,25 +55,11 @@ define_ruby_class()
   rb_define_method(rb_klass, "contour", RUBY_METHOD_FUNC(rb_contour), 0);
 }
 
-void
-cvconnectedcomp_free(void *ptr)
-{
-  if (ptr) {
-    CvConnectedComp* connected_comp = (CvConnectedComp*)ptr;
-    if (connected_comp->contour) {
-      CvContour *contour = (CvContour*)connected_comp->contour;
-      if (contour->storage)
-	cvReleaseMemStorage(&(contour->storage));
-    }
-    free(ptr);
-  }
-}
-
 VALUE
 rb_allocate(VALUE klass)
 {
   CvConnectedComp *ptr;
-  return Data_Make_Struct(klass, CvConnectedComp, 0, cvconnectedcomp_free, ptr);
+  return Data_Make_Struct(klass, CvConnectedComp, 0, -1, ptr);
 }
 
 VALUE

ext/opencv/cvcontour.cpp

@@ -80,39 +80,31 @@ define_ruby_class()
 VALUE
 rb_allocate(VALUE klass)
 {
-  CvContour *ptr = ALLOC(CvContour);
+  CvContour *ptr;
-  return Data_Wrap_Struct(klass, 0, cvcontour_free, ptr);
+  return Data_Make_Struct(klass, CvContour, mark_root_object, unresist_object, ptr);
-}
-
-void
-cvcontour_free(void *ptr)
-{
-  if (ptr) {
-    CvContour *contour = (CvContour*)ptr;
-    if (contour->storage)
-      cvReleaseMemStorage(&(contour->storage));
-  }
 }
 
 VALUE
 rb_initialize(int argc, VALUE *argv, VALUE self)
 {
-  CvMemStorage *storage;
+  VALUE storage;
-  VALUE storage_value;
+  rb_scan_args(argc, argv, "01", &storage);
-  if (rb_scan_args(argc, argv, "01", &storage_value) > 0) {
-    storage_value = CHECK_CVMEMSTORAGE(storage_value);
-    storage = CVMEMSTORAGE(storage_value);
-  }
-  else
-    storage = rb_cvCreateMemStorage(0);
 
+  if (NIL_P(storage))
+    storage = cCvMemStorage::new_object(0);
+  else
+    storage = CHECK_CVMEMSTORAGE(storage);
+
+  CvContour* contour = (CvContour*)DATA_PTR(self);
   try {
-    DATA_PTR(self) = (CvContour*)cvCreateSeq(CV_SEQ_ELTYPE_POINT, sizeof(CvContour),
+    contour = (CvContour*)cvCreateSeq(CV_SEQ_ELTYPE_POINT, sizeof(CvContour),
-					     sizeof(CvPoint), storage);
+				      sizeof(CvPoint), CVMEMSTORAGE(storage));
   }
   catch (cv::Exception& e) {
     raise_cverror(e);
   }
+  resist_root_object((CvSeq*)contour, storage);
+
   return self;
 }
 
@@ -270,7 +262,6 @@ VALUE
 rb_point_polygon_test(VALUE self, VALUE point, VALUE measure_dist)
 {
   int measure_dist_flag;
-  double dist;
 
   if (measure_dist == Qtrue)
     measure_dist_flag = 1;
@@ -279,6 +270,7 @@ rb_point_polygon_test(VALUE self, VALUE point, VALUE measure_dist)
   else
     measure_dist_flag = NUM2INT(measure_dist);
 
+  double dist = Qnil;
   try {
     dist = cvPointPolygonTest(CVARR(self), VALUE_TO_CVPOINT2D32F(point), measure_dist_flag);
   }

ext/opencv/cvseq.cpp

@@ -59,11 +59,20 @@ seqblock_class(void *ptr)
 }
 
 void
-resist_class_information_of_sequence(CvSeq *seq, VALUE klass)
+register_elem_class(CvSeq *seq, VALUE klass)
 {
   st_insert(seqblock_klass_table, (st_data_t)seq, (st_data_t)klass);
 }
 
+void
+unregister_elem_class(void *ptr)
+{
+  if (ptr) {
+    st_delete(seqblock_klass_table, (st_data_t*)&ptr, NULL);
+    unresist_object(ptr);
+  }
+}
+
 void
 define_ruby_class()
 {
@@ -111,18 +120,7 @@ VALUE
 rb_allocate(VALUE klass)
 {
   CvSeq *ptr = ALLOC(CvSeq);
-  return Data_Wrap_Struct(klass, 0, cvseq_free, ptr);
+  return Data_Wrap_Struct(klass, 0, unregister_elem_class, ptr);
-}
-
-void
-cvseq_free(void *ptr)
-{
-  if (ptr) {
-    CvSeq *seq = (CvSeq*)ptr;
-    st_delete(seqblock_klass_table, (st_data_t*)&ptr, NULL);
-    if (seq->storage)
-      cvReleaseMemStorage(&(seq->storage));
-  }
 }
 
 /*
@@ -138,15 +136,8 @@ VALUE
 rb_initialize(int argc, VALUE *argv, VALUE self)
 {
   VALUE klass, storage_value;
-  CvMemStorage *storage;
-
-  if (rb_scan_args(argc, argv, "11", &klass, &storage_value) > 1) {
-    storage_value = CHECK_CVMEMSTORAGE(storage_value);
-    storage = CVMEMSTORAGE(storage_value);
-  }
-  else
-    storage = rb_cvCreateMemStorage(0);
 
+  rb_scan_args(argc, argv, "11", &klass, &storage_value);
   if (!rb_obj_is_kind_of(klass, rb_cClass))
     raise_typeerror(klass, rb_cClass);
 
@@ -171,14 +162,22 @@ rb_initialize(int argc, VALUE *argv, VALUE self)
     rb_raise(rb_eArgError, "unsupport %s class for sequence-block.", rb_class2name(klass));
   
   CvSeq* seq = NULL;
+  if (NIL_P(storage_value)) {
+    storage_value = cCvMemStorage::new_object(0);
+  }
+  else {
+    storage_value = CHECK_CVMEMSTORAGE(storage_value);
+  }
+  
   try {
-    seq = cvCreateSeq(type, sizeof(CvSeq), size, storage);
+    seq = cvCreateSeq(type, sizeof(CvSeq), size, CVMEMSTORAGE(storage_value));
   }
   catch (cv::Exception& e) {
     raise_cverror(e);
   }
   DATA_PTR(self) = seq;
-  resist_class_information_of_sequence(seq, klass);
+  register_elem_class(seq, klass);
+  resist_root_object(seq, storage_value);
   
   return self;
 }
@@ -587,39 +586,13 @@ rb_remove(VALUE self, VALUE index)
   return self;
 }
 
-/*
-VALUE
-new_object(CvSeq *seq, VALUE klass)
-{
-  VALUE storage = cCvMemStorage::new_object();
-  VALUE object = REFER_OBJECT(rb_klass, seq, storage);
-  st_insert(seqblock_klass, (st_data_t)seq, (st_data_t)klass);
-  return object;
-}
-
-VALUE
-new_object(CvSeq *seq, VALUE klass, VALUE storage)
-{
-  VALUE object = REFER_OBJECT(rb_klass, seq, storage);
-  st_insert(seqblock_klass, (st_data_t)seq, (st_data_t)klass);
-  return object;
-}
-*/
-
-void
-unresist_cvseq(void *ptr)
-{
-  if (ptr)
-    st_delete(seqblock_klass_table, (st_data_t*)&ptr, NULL);
-}
-
 VALUE
 new_sequence(VALUE klass, CvSeq *seq, VALUE element_klass, VALUE storage)
 {
   resist_root_object(seq, storage);
   if (!NIL_P(element_klass))
-    resist_class_information_of_sequence(seq, element_klass);
+    register_elem_class(seq, element_klass);
-  return Data_Wrap_Struct(klass, mark_root_object, unresist_cvseq, seq);
+  return Data_Wrap_Struct(klass, mark_root_object, unregister_elem_class, seq);
 }
 
 VALUE

ext/opencv/cvseq.h

@@ -24,8 +24,6 @@ void define_ruby_class();
 VALUE seqblock_class(void *ptr);
 
 VALUE rb_allocate(VALUE klass);
-void free(void *ptr);
-void resist_class_information_of_sequence(CvSeq *seq, VALUE klass);
 
 VALUE rb_initialize(int argc, VALUE *argv, VALUE self);
 VALUE rb_total(VALUE self);