Hi, all
there a thread safe problem to scope variable:
for example:
<%session
int a
/%session>
allocate a integer, and put it in session scope, but when a request is
touching it, another thread would delete it, and free the momery, so
cause Segmentfault.
modified version define a SmartPtr to hold the reference, to avoid it to
be recovery.
lin
Index: ecpp.h
===================================================================
--- ecpp.h (revision 1095)
+++ ecpp.h (working copy)
@@ -230,23 +230,21 @@
}
#define TNT_VAR(scope, type, varname, key, construct) \
- type* varname##_pointer; \
+ tnt::Scope::pointer_type varname##_ptr; #SmartPtr to hold reference \
{ \
const std::string varname##_scopekey = key; \
tnt::Scope& _scope = scope; \
- tnt::Scope::pointer_type _ptr = _scope.get(varname##_scopekey); \
- if (_ptr.getPointer()) \
- varname##_pointer = static_cast<tnt::PointerObject< type >*>( \
- _ptr.getPointer())->get(); \
- else \
+ varname##_ptr = _scope.get(varname##_scopekey); \
+ if (!varname##_ptr.getPointer()) \
{ \
tnt::PointerObject< type >* _poptr = new tnt::PointerObject< type >(); \
- _ptr = _poptr; \
- _poptr->set(varname##_pointer = new type construct); \
- _scope.put(varname##_scopekey, _ptr); \
+ varname##_ptr = _poptr; \
+ _poptr->set(new type construct); \
+ _scope.put(varname##_scopekey, varname##_ptr); \
} \
} \
- type& varname = *varname##_pointer;
+ type& varname = *static_cast<tnt::PointerObject< type >*>( \
+ varname##_ptr.getPointer())->get();
#define TNT_SESSION_COMPONENT_VAR(type, varname, key, construct) \
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