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Only one alloc per init_new.

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Patrick Pelissier committed 2017-03-15 22:06:50 +01:00
1 parent 4fa296c379
commit ba37d183a7
1 file changed
+22 -13
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m-shared.h
+22 -13
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@@ -64,6 +64,11 @@
type *data; \
} *M_C3(shared_, name, _t)[1]; \
\
typedef struct M_C3(shared_contain_, name, _s) { \
type data; \
struct M_C3(shared_, name, _s) ptr; \
} M_C3(shared_contain_, name, _t)[1]; \
\
typedef union { \
type *ptr; \
const type *cptr; \
@@ -91,7 +96,7 @@
*shared = NULL; \
return; \
} \
ptr = M_MEMORY_ALLOC (struct M_C3(shared_, name, _s)); \
ptr = M_GET_NEW oplist (struct M_C3(shared_, name, _s)); \
if (ptr == NULL) { \
M_MEMORY_FULL(sizeof(struct M_C3(shared_, name, _s))); \
return; \
@@ -105,19 +110,15 @@
static inline void \
M_C3(shared_, name, _init_new)(M_C3(shared_, name, _t) shared) \
{ \
struct M_C3(shared_, name, _s) *ptr; \
ptr = M_MEMORY_ALLOC (struct M_C3(shared_, name, _s)); \
if (ptr == NULL) { \
M_MEMORY_FULL(sizeof(struct M_C3(shared_, name, _s))); \
return; \
} \
type *data; \
data = M_GET_NEW oplist (sizeof (type) ); \
if (data == NULL) { \
M_MEMORY_FREE(ptr); \
M_MEMORY_FULL(sizeof(type)); \
/* NOTE: Alloc 1 struct with both structures. */ \
struct M_C3(shared_contain_, name, _s) *p = \
M_GET_NEW oplist (struct M_C3(shared_contain_, name, _s)); \
if (p == NULL) { \
M_MEMORY_FULL(sizeof(struct M_C3(shared_contain_, name, _s))); \
return; \
} \
struct M_C3(shared_, name, _s) *ptr = &p->ptr; \
type *data = &p->data; \
M_GET_INIT oplist(*data); \
ptr->cpt = 1; \
ptr->data = data; \
@@ -152,7 +153,15 @@
if (atomic_fetch_sub(&((*dest)->cpt), 1) == 1) { \
M_GET_CLEAR oplist (*(*dest)->data); \
M_GET_DEL oplist ((*dest)->data); \
M_MEMORY_FREE (*dest); \
/* Test if the shared pointer and the type are part of the same \
structure */ \
/* Note: Not sure it is 100% standard compliant, but I am \
pretty sure than no implementation breaks on this. */ \
if (M_TYPE_FROM_FIELD(struct M_C3(shared_contain_, name,_s), \
(*dest)->data, type, data) \
!= M_TYPE_FROM_FIELD(struct M_C3(shared_contain_, name,_s), \
*dest, struct M_C3(shared_, name, _s), ptr) ) \
M_GET_DEL oplist (*dest); \
} \
*dest = NULL; \
} \