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Packing ecma_object_t to 8 bytes.

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This commit is contained in:
Ruben Ayrapetyan
2014-08-29 17:38:05 +04:00
parent 8e14f32806
commit 1d02085dc6
8 changed files with 364 additions and 180 deletions
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src/libecmaobjects/ecma-gc.c
+49 -14
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@@ -30,6 +30,7 @@
#include "ecma-helpers.h"
#include "globals.h"
#include "jerry-libc.h"
#include "jrt-bit-fields.h"
/**
* Global lists of objects sorted by generation identifier.
@@ -47,7 +48,9 @@ ecma_gc_get_object_refs (ecma_object_t *object_p) /**< object */
{
JERRY_ASSERT (object_p != NULL);
return object_p->gc_info.refs;
return (uint32_t) jrt_extract_bit_field (object_p->container,
ECMA_OBJECT_GC_REFS_POS,
ECMA_OBJECT_GC_REFS_WIDTH);
} /* ecma_gc_get_object_refs */
/**
@@ -59,9 +62,10 @@ ecma_gc_set_object_refs (ecma_object_t *object_p, /**< object */
{
JERRY_ASSERT (object_p != NULL);
object_p->gc_info.refs = refs & ((1u << CONFIG_ECMA_REFERENCE_COUNTER_WIDTH) - 1);
JERRY_ASSERT (object_p->gc_info.refs == refs);
object_p->container = jrt_set_bit_field_value (object_p->container,
refs,
ECMA_OBJECT_GC_REFS_POS,
ECMA_OBJECT_GC_REFS_WIDTH);
} /* ecma_gc_set_object_refs */
/**
@@ -72,7 +76,13 @@ ecma_gc_get_object_generation (ecma_object_t *object_p) /**< object */
{
JERRY_ASSERT (object_p != NULL);
return object_p->gc_info.generation;
ecma_gc_gen_t ret = (ecma_gc_gen_t) jrt_extract_bit_field (object_p->container,
ECMA_OBJECT_GC_GENERATION_POS,
ECMA_OBJECT_GC_GENERATION_WIDTH);
JERRY_ASSERT (ret < ECMA_GC_GEN_COUNT);
return ret;
} /* ecma_gc_get_object_generation */
/**
@@ -85,7 +95,10 @@ ecma_gc_set_object_generation (ecma_object_t *object_p, /**< object */
JERRY_ASSERT (object_p != NULL);
JERRY_ASSERT (generation < ECMA_GC_GEN_COUNT);
object_p->gc_info.generation = generation;
object_p->container = jrt_set_bit_field_value (object_p->container,
generation,
ECMA_OBJECT_GC_GENERATION_POS,
ECMA_OBJECT_GC_GENERATION_WIDTH);
} /* ecma_gc_set_object_generation */
/**
@@ -96,7 +109,12 @@ ecma_gc_get_object_next (ecma_object_t *object_p) /**< object */
{
JERRY_ASSERT (object_p != NULL);
return ECMA_GET_POINTER (object_p->gc_info.next_cp);
JERRY_ASSERT (sizeof (uintptr_t) * JERRY_BITSINBYTE >= ECMA_OBJECT_PROPERTIES_CP_WIDTH);
uintptr_t next_cp = (uintptr_t) jrt_extract_bit_field (object_p->container,
ECMA_OBJECT_GC_NEXT_CP_POS,
ECMA_OBJECT_GC_NEXT_CP_WIDTH);
return ECMA_GET_POINTER (next_cp);
} /* ecma_gc_get_object_next */
/**
@@ -108,7 +126,14 @@ ecma_gc_set_object_next (ecma_object_t *object_p, /**< object */
{
JERRY_ASSERT (object_p != NULL);
ECMA_SET_POINTER (object_p->gc_info.next_cp, next_object_p);
uintptr_t next_cp;
ECMA_SET_POINTER (next_cp, next_object_p);
JERRY_ASSERT (sizeof (uintptr_t) * JERRY_BITSINBYTE >= ECMA_OBJECT_PROPERTIES_CP_WIDTH);
object_p->container = jrt_set_bit_field_value (object_p->container,
next_cp,
ECMA_OBJECT_GC_NEXT_CP_POS,
ECMA_OBJECT_GC_NEXT_CP_WIDTH);
} /* ecma_gc_set_object_next */
/**
@@ -119,7 +144,9 @@ ecma_gc_is_object_visited (ecma_object_t *object_p) /**< object */
{
JERRY_ASSERT (object_p != NULL);
return object_p->gc_info.visited;
return jrt_extract_bit_field (object_p->container,
ECMA_OBJECT_GC_VISITED_POS,
ECMA_OBJECT_GC_VISITED_WIDTH);
} /* ecma_gc_is_object_visited */
/**
@@ -131,7 +158,10 @@ ecma_gc_set_object_visited (ecma_object_t *object_p, /**< object */
{
JERRY_ASSERT (object_p != NULL);
object_p->gc_info.visited = is_visited;
object_p->container = jrt_set_bit_field_value (object_p->container,
is_visited,
ECMA_OBJECT_GC_VISITED_POS,
ECMA_OBJECT_GC_VISITED_WIDTH);
} /* ecma_gc_set_object_visited */
/**
@@ -142,7 +172,9 @@ ecma_gc_is_object_may_ref_younger_objects (ecma_object_t *object_p) /**< object
{
JERRY_ASSERT (object_p != NULL);
return object_p->gc_info.may_ref_younger_objects;
return jrt_extract_bit_field (object_p->container,
ECMA_OBJECT_GC_REFS_POS,
ECMA_OBJECT_GC_REFS_WIDTH);
} /* ecma_gc_is_object_may_ref_younger_objects */
/**
@@ -154,7 +186,10 @@ ecma_gc_set_object_may_ref_younger_objects (ecma_object_t *object_p, /**< object
{
JERRY_ASSERT (object_p != NULL);
object_p->gc_info.may_ref_younger_objects = is_may_ref_younger_objects;
object_p->container = jrt_set_bit_field_value (object_p->container,
is_may_ref_younger_objects,
ECMA_OBJECT_GC_MAY_REF_YOUNGER_OBJECTS_POS,
ECMA_OBJECT_GC_MAY_REF_YOUNGER_OBJECTS_WIDTH);
} /* ecma_gc_set_object_may_ref_younger_objects */
/**
@@ -362,9 +397,9 @@ ecma_gc_mark (ecma_object_t *object_p, /**< start object */
}
case ECMA_INTERNAL_PROPERTY_PROTOTYPE: /* the property's value is located in ecma_object_t
(see above in the routine) */
(see above in the routine) */
case ECMA_INTERNAL_PROPERTY_EXTENSIBLE: /* the property's value is located in ecma_object_t
(see above in the routine) */
(see above in the routine) */
{
JERRY_UNREACHABLE();
}