diff options
Diffstat (limited to 'share/swig/2.0.11/ruby/rubytracking.swg')
-rw-r--r-- | share/swig/2.0.11/ruby/rubytracking.swg | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/share/swig/2.0.11/ruby/rubytracking.swg b/share/swig/2.0.11/ruby/rubytracking.swg deleted file mode 100644 index 0a36f4a..0000000 --- a/share/swig/2.0.11/ruby/rubytracking.swg +++ /dev/null @@ -1,157 +0,0 @@ -/* ----------------------------------------------------------------------------- - * rubytracking.swg - * - * This file contains support for tracking mappings from - * Ruby objects to C++ objects. This functionality is needed - * to implement mark functions for Ruby's mark and sweep - * garbage collector. - * ----------------------------------------------------------------------------- */ - -#ifdef __cplusplus -extern "C" { -#endif - -/* Ruby 1.8 actually assumes the first case. */ -#if SIZEOF_VOIDP == SIZEOF_LONG -# define SWIG2NUM(v) LONG2NUM((unsigned long)v) -# define NUM2SWIG(x) (unsigned long)NUM2LONG(x) -#elif SIZEOF_VOIDP == SIZEOF_LONG_LONG -# define SWIG2NUM(v) LL2NUM((unsigned long long)v) -# define NUM2SWIG(x) (unsigned long long)NUM2LL(x) -#else -# error sizeof(void*) is not the same as long or long long -#endif - - -/* Global Ruby hash table to store Trackings from C/C++ - structs to Ruby Objects. -*/ -static VALUE swig_ruby_trackings = Qnil; - -/* Global variable that stores a reference to the ruby - hash table delete function. */ -static ID swig_ruby_hash_delete; - -/* Setup a Ruby hash table to store Trackings */ -SWIGRUNTIME void SWIG_RubyInitializeTrackings(void) { - /* Create a ruby hash table to store Trackings from C++ - objects to Ruby objects. */ - - /* Try to see if some other .so has already created a - tracking hash table, which we keep hidden in an instance var - in the SWIG module. - This is done to allow multiple DSOs to share the same - tracking table. - */ - ID trackings_id = rb_intern( "@__trackings__" ); - VALUE verbose = rb_gv_get("VERBOSE"); - rb_gv_set("VERBOSE", Qfalse); - swig_ruby_trackings = rb_ivar_get( _mSWIG, trackings_id ); - rb_gv_set("VERBOSE", verbose); - - /* No, it hasn't. Create one ourselves */ - if ( swig_ruby_trackings == Qnil ) - { - swig_ruby_trackings = rb_hash_new(); - rb_ivar_set( _mSWIG, trackings_id, swig_ruby_trackings ); - } - - /* Now store a reference to the hash table delete function - so that we only have to look it up once.*/ - swig_ruby_hash_delete = rb_intern("delete"); -} - -/* Get a Ruby number to reference a pointer */ -SWIGRUNTIME VALUE SWIG_RubyPtrToReference(void* ptr) { - /* We cast the pointer to an unsigned long - and then store a reference to it using - a Ruby number object. */ - - /* Convert the pointer to a Ruby number */ - return SWIG2NUM(ptr); -} - -/* Get a Ruby number to reference an object */ -SWIGRUNTIME VALUE SWIG_RubyObjectToReference(VALUE object) { - /* We cast the object to an unsigned long - and then store a reference to it using - a Ruby number object. */ - - /* Convert the Object to a Ruby number */ - return SWIG2NUM(object); -} - -/* Get a Ruby object from a previously stored reference */ -SWIGRUNTIME VALUE SWIG_RubyReferenceToObject(VALUE reference) { - /* The provided Ruby number object is a reference - to the Ruby object we want.*/ - - /* Convert the Ruby number to a Ruby object */ - return NUM2SWIG(reference); -} - -/* Add a Tracking from a C/C++ struct to a Ruby object */ -SWIGRUNTIME void SWIG_RubyAddTracking(void* ptr, VALUE object) { - /* In a Ruby hash table we store the pointer and - the associated Ruby object. The trick here is - that we cannot store the Ruby object directly - if - we do then it cannot be garbage collected. So - instead we typecast it as a unsigned long and - convert it to a Ruby number object.*/ - - /* Get a reference to the pointer as a Ruby number */ - VALUE key = SWIG_RubyPtrToReference(ptr); - - /* Get a reference to the Ruby object as a Ruby number */ - VALUE value = SWIG_RubyObjectToReference(object); - - /* Store the mapping to the global hash table. */ - rb_hash_aset(swig_ruby_trackings, key, value); -} - -/* Get the Ruby object that owns the specified C/C++ struct */ -SWIGRUNTIME VALUE SWIG_RubyInstanceFor(void* ptr) { - /* Get a reference to the pointer as a Ruby number */ - VALUE key = SWIG_RubyPtrToReference(ptr); - - /* Now lookup the value stored in the global hash table */ - VALUE value = rb_hash_aref(swig_ruby_trackings, key); - - if (value == Qnil) { - /* No object exists - return nil. */ - return Qnil; - } - else { - /* Convert this value to Ruby object */ - return SWIG_RubyReferenceToObject(value); - } -} - -/* Remove a Tracking from a C/C++ struct to a Ruby object. It - is very important to remove objects once they are destroyed - since the same memory address may be reused later to create - a new object. */ -SWIGRUNTIME void SWIG_RubyRemoveTracking(void* ptr) { - /* Get a reference to the pointer as a Ruby number */ - VALUE key = SWIG_RubyPtrToReference(ptr); - - /* Delete the object from the hash table by calling Ruby's - do this we need to call the Hash.delete method.*/ - rb_funcall(swig_ruby_trackings, swig_ruby_hash_delete, 1, key); -} - -/* This is a helper method that unlinks a Ruby object from its - underlying C++ object. This is needed if the lifetime of the - Ruby object is longer than the C++ object */ -SWIGRUNTIME void SWIG_RubyUnlinkObjects(void* ptr) { - VALUE object = SWIG_RubyInstanceFor(ptr); - - if (object != Qnil) { - DATA_PTR(object) = 0; - } -} - - -#ifdef __cplusplus -} -#endif |