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/* -----------------------------------------------------------------------------
* director.swg
*
* This file contains support for director classes that proxy
* method calls from C++ to Ocaml extensions.
*
* ----------------------------------------------------------------------------- */
#ifdef __cplusplus
#include <string>
namespace Swig {
/* base class for director exceptions */
class DirectorException {
protected:
std::string swig_msg;
public:
DirectorException(const char* msg="") {
}
const char *getMessage() const {
return swig_msg.c_str();
}
virtual ~DirectorException() {}
};
/* type mismatch in the return value from a python method call */
class DirectorTypeMismatchException : public Swig::DirectorException {
public:
DirectorTypeMismatchException(const char* msg="") {
}
};
/* any python exception that occurs during a director method call */
class DirectorMethodException : public Swig::DirectorException {};
/* attempt to call a pure virtual method via a director method */
class DirectorPureVirtualException : public Swig::DirectorException {
public:
DirectorPureVirtualException(const char* msg="") {
}
static void raise(const char *msg) {
throw DirectorPureVirtualException(msg);
}
};
/* simple thread abstraction for pthreads on win32 */
#ifdef __THREAD__
#define __PTHREAD__
#if defined(_WIN32) || defined(__WIN32__)
#define pthread_mutex_lock EnterCriticalSection
#define pthread_mutex_unlock LeaveCriticalSection
#define pthread_mutex_t CRITICAL_SECTION
#define MUTEX_INIT(var) CRITICAL_SECTION var
#else
#include <pthread.h>
#define MUTEX_INIT(var) pthread_mutex_t var = PTHREAD_MUTEX_INITIALIZER
#endif
#endif
/* director base class */
class Director {
private:
/* pointer to the wrapped ocaml object */
CAML_VALUE swig_self;
/* flag indicating whether the object is owned by ocaml or c++ */
mutable bool swig_disown_flag;
public:
/* wrap a ocaml object, optionally taking ownership */
Director(CAML_VALUE self) : swig_self(self), swig_disown_flag(false) {
register_global_root(&swig_self);
}
/* discard our reference at destruction */
virtual ~Director() {
remove_global_root(&swig_self);
swig_disown();
// Disown is safe here because we're just divorcing a reference that
// points to us.
}
/* return a pointer to the wrapped ocaml object */
CAML_VALUE swig_get_self() const {
return swig_self;
}
/* acquire ownership of the wrapped ocaml object (the sense of "disown"
* is from ocaml) */
void swig_disown() const {
if (!swig_disown_flag) {
swig_disown_flag=true;
callback(*caml_named_value("caml_obj_disown"),swig_self);
}
}
};
}
#endif /* __cplusplus */
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