Re: user type segfault

[Paul Kienzle]

David Bateman wrote:

> Just one wish, is it possible to fool the register_type() call into
> doing the locking? If it is then no other changes are needed in other
> source files to fix this for all existing loadable types. Other each
> loadable type with need to be modified to perform the locking.
Not really, or at least not nicely.

I'm guessing that the register_type call is used by the builtin types as 
well, so we
will need macros in defun-dld.h to override it.  E.g.,
   inline void nop(void) {}
   #define register_type register_type(), mlock(__DLDNAME__),nop
Then
   mytype::register_type()
becomes
  mytype::register_type(),mlock(__DLDNAME__),nop()
Problem 1: register_type is a circular definition.  Is that allowed?
Problem 2: how do we define __DLDNAME__?
__DLDNAME__ can't be a C++ constant because it must exist in
the global scope.  Multiple DEFUN_DLD's in the same file would
collide.  I don't know how to define a macro within a macro.

Paul Kienzle
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