NAME ^

src/pmc/coroutine.pmc - Co-Routine PMC

DESCRIPTION ^

Coroutine extends Continuation to provide a subroutine that can stop in the middle, and start back up later at the point at which it stopped. See the Glossary for more information.

Flags ^

private0 call flip flop

private3 restore current sub after "flop". Used by generators.

Methods ^

void init()

Initializes the co-routine.

PMC *clone()

Clone the couroutine.

void destroy()

Destroys the coroutine.

*/

    void destroy () {
        Parrot_coro *sub = PMC_coro(SELF);

        if (sub->ctx)
            Parrot_free_context(interp, sub->ctx, 0);

        SUPER();
    }

    PMC *clone() {
        Parrot_coro *sub    = mem_allocate_typed(Parrot_coro);
        PMC         *ret    = pmc_new_noinit(INTERP, SELF->vtable->base_type);

        PObj_custom_mark_destroy_SETALL(ret);

        PMC_struct_val(ret) = sub;
        PMC_pmc_val(ret)    = PMCNULL;

        memcpy(sub, PMC_sub(SELF), sizeof (Parrot_coro));

        sub->name           = string_copy(INTERP, sub->name);

        return ret;
    }
/*

opcode_t *invoke(void *next)

Swaps the "context".

void mark()

Marks the coroutine as live.

HISTORY ^

Initial version by Melvin on 2002/06/6.


 parrot