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Introducing MEM_CP_{GET_[NON_NULL_]POINTER, SET_[NON_NULL_]POINTER} getters / setters for compressed pointers.

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JerryScript-DCO-1.0-Signed-off-by: Ruben Ayrapetyan r.ayrapetyan@samsung.com
This commit is contained in:
Ruben Ayrapetyan
2015-05-13 20:54:41 +03:00
parent da86a52fe9
commit c4e7f56562
6 changed files with 62 additions and 58 deletions
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jerry-core/ecma/base/ecma-globals.h
+2 -2
View File
@@ -38,12 +38,12 @@
* The offset is shifted right by MEM_ALIGNMENT_LOG.
* Least significant MEM_ALIGNMENT_LOG bits of non-shifted offset are zeroes.
*/
#define ECMA_POINTER_FIELD_WIDTH MEM_COMPRESSED_POINTER_WIDTH
#define ECMA_POINTER_FIELD_WIDTH MEM_CP_WIDTH
/**
* The NULL value for compressed pointers
*/
#define ECMA_NULL_POINTER MEM_COMPRESSED_POINTER_NULL
#define ECMA_NULL_POINTER MEM_CP_NULL
/**
* @}
jerry-core/ecma/base/ecma-helpers.h
+9 -26
View File
@@ -27,44 +27,27 @@
#include "mem-allocator.h"
/**
* Get value of pointer from specified non-null compressed pointer field.
* Get value of pointer from specified non-null compressed pointer.
*/
#define ECMA_GET_NON_NULL_POINTER(type, field) \
((type *) mem_decompress_pointer (field))
#define ECMA_GET_NON_NULL_POINTER(type, field) MEM_CP_GET_NON_NULL_POINTER (type, field)
/**
* Get value of pointer from specified compressed pointer field.
* Get value of pointer from specified compressed pointer.
*/
#define ECMA_GET_POINTER(type, field) \
(((unlikely (field == ECMA_NULL_POINTER)) ? NULL : ECMA_GET_NON_NULL_POINTER (type, field)))
#define ECMA_GET_POINTER(type, field) MEM_CP_GET_POINTER (type, field)
/**
* Set value of non-null compressed pointer field so that it will correspond
* Set value of non-null compressed pointer so that it will correspond
* to specified non_compressed_pointer.
*/
#define ECMA_SET_NON_NULL_POINTER(field, non_compressed_pointer) \
(field) = (mem_compress_pointer (non_compressed_pointer) & \
((((mem_cpointer_t) 1u) << ECMA_POINTER_FIELD_WIDTH) - 1))
#define ECMA_SET_NON_NULL_POINTER(field, non_compressed_pointer) MEM_CP_SET_NON_NULL_POINTER (field, \
non_compressed_pointer)
/**
* Set value of compressed pointer field so that it will correspond
* Set value of compressed pointer so that it will correspond
* to specified non_compressed_pointer.
*/
#define ECMA_SET_POINTER(field, non_compressed_pointer) \
do \
{ \
auto __temp_pointer = non_compressed_pointer; \
non_compressed_pointer = __temp_pointer; \
} while (0); \
\
if (unlikely ((non_compressed_pointer) == NULL)) \
{ \
(field) = ECMA_NULL_POINTER; \
} \
else \
{ \
ECMA_SET_NON_NULL_POINTER (field, non_compressed_pointer); \
}
#define ECMA_SET_POINTER(field, non_compressed_pointer) MEM_CP_SET_POINTER (field, non_compressed_pointer)
/* ecma-helpers-value.c */
extern bool ecma_is_value_empty (ecma_value_t value);