[Tarantool-patches] [PATCH luajit v2 4/7] core: introduce new mem_L field

[Sergey Ostanevich]

Hi!

Just some nits in the message, LGTM.

Sergos.

> On 25 Dec 2020, at 18:26, Sergey Kaplun <skaplun at tarantool.org> wrote:
> 
> To determine currently allocating coroutine (that may not be equal to
> currently executed one) a new field called mem_L is added to
                               remove^^^^^^^                  ^ the
> global_State structure. This field is set on each allocation event and
> stores the coroutine address that is used for allocation.
> 
> Part of tarantool/tarantool#5442
> ---
> src/lj_gc.c  | 2 ++
> src/lj_obj.h | 1 +
> 2 files changed, 3 insertions(+)
> 
> diff --git a/src/lj_gc.c b/src/lj_gc.c
> index 44c8aa1..800fb2c 100644
> --- a/src/lj_gc.c
> +++ b/src/lj_gc.c
> @@ -852,6 +852,8 @@ void *lj_mem_realloc(lua_State *L, void *p, GCSize osz, GCSize nsz)
> {
>   global_State *g = G(L);
>   lua_assert((osz == 0) == (p == NULL));
> +
> +  setgcref(g->mem_L, obj2gco(L));
>   p = g->allocf(g->allocd, p, osz, nsz);
>   if (p == NULL && nsz > 0)
>     lj_err_mem(L);
> diff --git a/src/lj_obj.h b/src/lj_obj.h
> index 7fb715e..c94617d 100644
> --- a/src/lj_obj.h
> +++ b/src/lj_obj.h
> @@ -649,6 +649,7 @@ typedef struct global_State {
>   BCIns bc_cfunc_int;	/* Bytecode for internal C function calls. */
>   BCIns bc_cfunc_ext;	/* Bytecode for external C function calls. */
>   GCRef cur_L;		/* Currently executing lua_State. */
> +  GCRef mem_L;		/* Currently allocating lua_State. */
>   MRef jit_base;	/* Current JIT code L->base or NULL. */
>   MRef ctype_state;	/* Pointer to C type state. */
>   GCRef gcroot[GCROOT_MAX];  /* GC roots. */
> -- 
> 2.28.0
>