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parrotlibrary.pmc
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parrotlibrary.pmc
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/*
Copyright (C) 2001-2014, Parrot Foundation.
=head1 NAME
src/pmc/parrotlibrary.pmc - ParrotLibrary PMC
=head1 DESCRIPTION
Class for holding info about a dynamic library.
Properties:
_filename full path/file of lib
_ro true after init
All ParrotLibrary PMCs are in interp->iglobals.
When a dynamic library (pmc or ops) is loaded, the load function returns
a ParrotLibrary PMC.
=head2 Methods
=over 4
=cut
*/
#define PMC_dlhandle(x) ((Parrot_ParrotLibrary_attributes*)PMC_data(x))->dl_handle
#define PMC_oplib_init(x) ((Parrot_ParrotLibrary_attributes*)PMC_data(x))->oplib_init
/* HEADERIZER HFILE: none */
/* HEADERIZER BEGIN: static */
/* HEADERIZER END: static */
pmclass ParrotLibrary auto_attrs provides library {
ATTR void * dl_handle; /* DLL handle */
ATTR void * oplib_init; /* oplib init function */
/*
=item C<void init()>
Initializes the library with a C<NULL> oplib init function.
=cut
*/
VTABLE void init() :no_wb {
UNUSED(SELF)
UNUSED(INTERP)
}
/*
=item C<void destroy()>
Destroys the library, closing the shared library.
=cut
*/
VTABLE void destroy() :no_wb {
void *dl_handle = PMC_dlhandle(SELF);
if (dl_handle)
Parrot_dlclose(dl_handle);
PARROT_GC_WRITE_BARRIER(INTERP, SELF);
}
/*
=item C<PMC *clone()>
Creates and returns a clone of the library.
=cut
*/
VTABLE PMC *clone() :no_wb {
PMC * const dest = Parrot_pmc_new(INTERP, SELF->vtable->base_type);
if (PMC_oplib_init(SELF))
PMC_oplib_init(dest) = PMC_oplib_init(SELF);
if (PMC_dlhandle(SELF)) {
PMC_dlhandle(dest) = PMC_dlhandle(SELF);
PObj_custom_destroy_SET(dest);
}
if (!PMC_IS_NULL(PMC_metadata(SELF)))
PMC_metadata(dest) = VTABLE_clone(INTERP, PMC_metadata(SELF));
return dest;
}
/*
=item C<INTVAL get_bool()>
Returns whether a library has been successfully loaded.
=cut
*/
VTABLE INTVAL get_bool() :no_wb {
UNUSED(INTERP)
return (PMC_dlhandle(SELF) != NULL);
}
/*
=item C<STRING *get_string()>
Returns the name of the loaded library.
=cut
*/
VTABLE STRING *get_string() :no_wb {
STRING * const key = CONST_STRING(INTERP, "_filename");
PMC * const prop = Parrot_pmc_getprop(INTERP, SELF, key);
return VTABLE_get_string(INTERP, prop);
}
/*
=item C<void *get_pointer()>
Gets the pointer to the shared library handle.
=cut
*/
VTABLE void *get_pointer() :no_wb {
UNUSED(INTERP)
return PMC_dlhandle(SELF);
}
/*
=item C<void set_pointer(void *handle)>
Sets the pointer to the shared library handle.
=cut
*/
VTABLE void set_pointer(void *handle) {
PMC_dlhandle(SELF) = handle;
PObj_custom_destroy_SET(SELF);
}
}
/*
=back
=cut
*/
/*
* Local variables:
* c-file-style: "parrot"
* End:
* vim: expandtab shiftwidth=4 cinoptions='\:2=2' :
*/