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Reduce the size of the jerry_context_t structure (#2981)

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This patch substitutes several global pointer with compressed pointers to reduce the size of the structure.

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu
This commit is contained in:
Robert Fancsik
2019-08-06 13:18:44 +02:00
committed by GitHub
parent 14a9a1a1f0
commit dec9dbc926
5 changed files with 31 additions and 40 deletions
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jerry-core/ecma/builtin-objects/ecma-builtins.c
+13 -12
View File
@@ -276,7 +276,7 @@ ecma_builtin_is (ecma_object_t *obj_p, /**< pointer to an object */
/* If a built-in object is not instantiated, its value is NULL,
hence it cannot be equal to a valid object. */
return (obj_p == JERRY_CONTEXT (ecma_builtin_objects)[builtin_id]);
return (obj_p == ECMA_GET_POINTER (ecma_object_t, JERRY_CONTEXT (ecma_builtin_objects)[builtin_id]));
} /* ecma_builtin_is */
/**
@@ -292,12 +292,12 @@ ecma_builtin_get (ecma_builtin_id_t builtin_id) /**< id of built-in to check on
{
JERRY_ASSERT (builtin_id < ECMA_BUILTIN_ID__COUNT);
if (JERRY_UNLIKELY (JERRY_CONTEXT (ecma_builtin_objects)[builtin_id] == NULL))
if (JERRY_UNLIKELY (JERRY_CONTEXT (ecma_builtin_objects)[builtin_id] == JMEM_CP_NULL))
{
ecma_instantiate_builtin (builtin_id);
}
return JERRY_CONTEXT (ecma_builtin_objects)[builtin_id];
return ECMA_GET_NON_NULL_POINTER (ecma_object_t, JERRY_CONTEXT (ecma_builtin_objects)[builtin_id]);
} /* ecma_builtin_get */
/**
@@ -311,9 +311,9 @@ ecma_builtin_get (ecma_builtin_id_t builtin_id) /**< id of built-in to check on
inline ecma_object_t * JERRY_ATTR_ALWAYS_INLINE
ecma_builtin_get_global (void)
{
JERRY_ASSERT (JERRY_CONTEXT (ecma_builtin_objects)[ECMA_BUILTIN_ID_GLOBAL] != NULL);
JERRY_ASSERT (JERRY_CONTEXT (ecma_builtin_objects)[ECMA_BUILTIN_ID_GLOBAL] != JMEM_CP_NULL);
return JERRY_CONTEXT (ecma_builtin_objects)[ECMA_BUILTIN_ID_GLOBAL];
return ECMA_GET_NON_NULL_POINTER (ecma_object_t, JERRY_CONTEXT (ecma_builtin_objects)[ECMA_BUILTIN_ID_GLOBAL]);
} /* ecma_builtin_get_global */
/**
@@ -339,7 +339,7 @@ static void
ecma_instantiate_builtin (ecma_builtin_id_t obj_builtin_id) /**< built-in id */
{
JERRY_ASSERT (obj_builtin_id < ECMA_BUILTIN_ID__COUNT);
JERRY_ASSERT (JERRY_CONTEXT (ecma_builtin_objects)[obj_builtin_id] == NULL);
JERRY_ASSERT (JERRY_CONTEXT (ecma_builtin_objects)[obj_builtin_id] == JMEM_CP_NULL);
ecma_builtin_descriptor_t builtin_desc = ecma_builtin_descriptors[obj_builtin_id];
ecma_builtin_id_t object_prototype_builtin_id = (ecma_builtin_id_t) (builtin_desc >> ECMA_BUILTIN_PROTOTYPE_ID_SHIFT);
@@ -352,11 +352,12 @@ ecma_instantiate_builtin (ecma_builtin_id_t obj_builtin_id) /**< built-in id */
}
else
{
if (JERRY_CONTEXT (ecma_builtin_objects)[object_prototype_builtin_id] == NULL)
if (JERRY_CONTEXT (ecma_builtin_objects)[object_prototype_builtin_id] == JMEM_CP_NULL)
{
ecma_instantiate_builtin (object_prototype_builtin_id);
}
prototype_obj_p = JERRY_CONTEXT (ecma_builtin_objects)[object_prototype_builtin_id];
prototype_obj_p = ECMA_GET_NON_NULL_POINTER (ecma_object_t,
JERRY_CONTEXT (ecma_builtin_objects)[object_prototype_builtin_id]);
JERRY_ASSERT (prototype_obj_p != NULL);
}
@@ -502,7 +503,7 @@ ecma_instantiate_builtin (ecma_builtin_id_t obj_builtin_id) /**< built-in id */
}
}
JERRY_CONTEXT (ecma_builtin_objects)[obj_builtin_id] = obj_p;
ECMA_SET_NON_NULL_POINTER (JERRY_CONTEXT (ecma_builtin_objects)[obj_builtin_id], obj_p);
} /* ecma_instantiate_builtin */
/**
@@ -515,10 +516,10 @@ ecma_finalize_builtins (void)
id < ECMA_BUILTIN_ID__COUNT;
id = (ecma_builtin_id_t) (id + 1))
{
if (JERRY_CONTEXT (ecma_builtin_objects)[id] != NULL)
if (JERRY_CONTEXT (ecma_builtin_objects)[id] != JMEM_CP_NULL)
{
ecma_deref_object (JERRY_CONTEXT (ecma_builtin_objects)[id]);
JERRY_CONTEXT (ecma_builtin_objects)[id] = NULL;
ecma_deref_object (ECMA_GET_NON_NULL_POINTER (ecma_object_t, JERRY_CONTEXT (ecma_builtin_objects)[id]));
JERRY_CONTEXT (ecma_builtin_objects)[id] = JMEM_CP_NULL;
}
}
} /* ecma_finalize_builtins */