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authorAndrew Tridgell <tridge@samba.org>2006-10-19 10:02:26 +0000
committerGerald (Jerry) Carter <jerry@samba.org>2007-10-10 14:21:29 -0500
commit5370afe8c2d9f4b77711010f2ce9ea4fc33886c4 (patch)
tree75f3698fe8f2b2eab6b018bcad9f9242c51ac095 /source4/lib/talloc
parentc3e4b2d2782832bcb0072cd7cbb7f0f94910d4bc (diff)
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r19412: some rather strange looking changes to talloc that gain us about 50%
in the talloc benchmark. These changes were driven by some cachegrind profiles, with the biggest improvements coming from inlining some functions. I don't think it would be a good idea to start spreading inline and likely()/unlikely() in other parts of Samba, as the benefit in most code will be very small, but talloc() is such a speed critical part of Samba that I think these changes are worthwhile (This used to be commit 8644708c3f42d249b5d1fd2bde37aeb35288da13)
Diffstat (limited to 'source4/lib/talloc')
-rw-r--r--source4/lib/talloc/talloc.c510
1 files changed, 299 insertions, 211 deletions
diff --git a/source4/lib/talloc/talloc.c b/source4/lib/talloc/talloc.c
index 87b4d51ba4..bae1942f43 100644
--- a/source4/lib/talloc/talloc.c
+++ b/source4/lib/talloc/talloc.c
@@ -77,6 +77,17 @@
#endif
#endif
+/* these macros gain us a few percent of speed on gcc */
+#if (__GNUC__ >= 3)
+/* the strange !! is to ensure that __builtin_expect() takes either 0 or 1
+ as its first argument */
+#define likely(x) __builtin_expect(!!(x), 1)
+#define unlikely(x) __builtin_expect(!!(x), 0)
+#else
+#define likely(x) x
+#define unlikely(x) x
+#endif
+
/* this null_context is only used if talloc_enable_leak_report() or
talloc_enable_leak_report_full() is called, otherwise it remains
NULL
@@ -106,15 +117,16 @@ struct talloc_chunk {
#define TC_PTR_FROM_CHUNK(tc) ((void *)(TC_HDR_SIZE + (char*)tc))
/* panic if we get a bad magic value */
-static struct talloc_chunk *talloc_chunk_from_ptr(const void *ptr)
+static inline struct talloc_chunk *talloc_chunk_from_ptr(const void *ptr)
{
const char *pp = (const char *)ptr;
struct talloc_chunk *tc = discard_const_p(struct talloc_chunk, pp - TC_HDR_SIZE);
- if ((tc->flags & ~0xF) != TALLOC_MAGIC) {
- TALLOC_ABORT("Bad talloc magic value - unknown value");
- }
- if (tc->flags & TALLOC_FLAG_FREE) {
- TALLOC_ABORT("Bad talloc magic value - double free");
+ if (unlikely((tc->flags & (TALLOC_FLAG_FREE | ~0xF)) != TALLOC_MAGIC)) {
+ if (tc->flags & TALLOC_FLAG_FREE) {
+ TALLOC_ABORT("Bad talloc magic value - double free");
+ } else {
+ TALLOC_ABORT("Bad talloc magic value - unknown value");
+ }
}
return tc;
}
@@ -163,23 +175,43 @@ void *talloc_parent(const void *ptr)
return tc? TC_PTR_FROM_CHUNK(tc) : NULL;
}
+/*
+ find parents name
+*/
+const char *talloc_parent_name(const void *context)
+{
+ struct talloc_chunk *tc;
+
+ if (unlikely(context == NULL)) {
+ return NULL;
+ }
+
+ tc = talloc_chunk_from_ptr(context);
+ while (tc && tc->prev) tc = tc->prev;
+ if (tc) {
+ tc = tc->parent;
+ }
+ return tc->name;
+}
+
+
/*
Allocate a bit of memory as a child of an existing pointer
*/
-void *_talloc(const void *context, size_t size)
+static inline void *__talloc(const void *context, size_t size)
{
struct talloc_chunk *tc;
- if (context == NULL) {
+ if (unlikely(context == NULL)) {
context = null_context;
}
- if (size >= MAX_TALLOC_SIZE) {
+ if (unlikely(size >= MAX_TALLOC_SIZE)) {
return NULL;
}
tc = (struct talloc_chunk *)malloc(TC_HDR_SIZE+size);
- if (tc == NULL) return NULL;
+ if (unlikely(tc == NULL)) return NULL;
tc->size = size;
tc->flags = TALLOC_MAGIC;
@@ -188,16 +220,19 @@ void *_talloc(const void *context, size_t size)
tc->name = NULL;
tc->refs = NULL;
- if (context) {
+ if (likely(context)) {
struct talloc_chunk *parent = talloc_chunk_from_ptr(context);
- tc->parent = parent;
-
if (parent->child) {
parent->child->parent = NULL;
+ tc->next = parent->child;
+ tc->next->prev = tc;
+ } else {
+ tc->next = NULL;
}
-
- _TLIST_ADD(parent->child, tc);
+ tc->parent = parent;
+ tc->prev = NULL;
+ parent->child = tc;
} else {
tc->next = tc->prev = tc->parent = NULL;
}
@@ -205,7 +240,6 @@ void *_talloc(const void *context, size_t size)
return TC_PTR_FROM_CHUNK(tc);
}
-
/*
setup a destructor to be called on free of a pointer
the destructor should return 0 on success, or -1 on failure.
@@ -223,7 +257,7 @@ void _talloc_set_destructor(const void *ptr, int (*destructor)(void *))
*/
int talloc_increase_ref_count(const void *ptr)
{
- if (!talloc_reference(null_context, ptr)) {
+ if (unlikely(!talloc_reference(null_context, ptr))) {
return -1;
}
return 0;
@@ -240,6 +274,33 @@ static int talloc_reference_destructor(struct talloc_reference_handle *handle)
}
/*
+ more efficient way to add a name to a pointer - the name must point to a
+ true string constant
+*/
+static inline void _talloc_set_name_const(const void *ptr, const char *name)
+{
+ struct talloc_chunk *tc = talloc_chunk_from_ptr(ptr);
+ tc->name = name;
+}
+
+/*
+ internal talloc_named_const()
+*/
+static inline void *_talloc_named_const(const void *context, size_t size, const char *name)
+{
+ void *ptr;
+
+ ptr = __talloc(context, size);
+ if (unlikely(ptr == NULL)) {
+ return NULL;
+ }
+
+ _talloc_set_name_const(ptr, name);
+
+ return ptr;
+}
+
+/*
make a secondary reference to a pointer, hanging off the given context.
the pointer remains valid until both the original caller and this given
context are freed.
@@ -252,13 +313,13 @@ void *_talloc_reference(const void *context, const void *ptr)
{
struct talloc_chunk *tc;
struct talloc_reference_handle *handle;
- if (ptr == NULL) return NULL;
+ if (unlikely(ptr == NULL)) return NULL;
tc = talloc_chunk_from_ptr(ptr);
- handle = (struct talloc_reference_handle *)talloc_named_const(context,
+ handle = (struct talloc_reference_handle *)_talloc_named_const(context,
sizeof(struct talloc_reference_handle),
TALLOC_MAGIC_REFERENCE);
- if (handle == NULL) return NULL;
+ if (unlikely(handle == NULL)) return NULL;
/* note that we hang the destructor off the handle, not the
main context as that allows the caller to still setup their
@@ -269,6 +330,152 @@ void *_talloc_reference(const void *context, const void *ptr)
return handle->ptr;
}
+
+/*
+ internal talloc_free call
+*/
+static inline int _talloc_free(void *ptr)
+{
+ struct talloc_chunk *tc;
+
+ if (unlikely(ptr == NULL)) {
+ return -1;
+ }
+
+ tc = talloc_chunk_from_ptr(ptr);
+
+ if (unlikely(tc->refs)) {
+ int is_child;
+ /* check this is a reference from a child or grantchild
+ * back to it's parent or grantparent
+ *
+ * in that case we need to remove the reference and
+ * call another instance of talloc_free() on the current
+ * pointer.
+ */
+ is_child = talloc_is_parent(tc->refs, ptr);
+ _talloc_free(tc->refs);
+ if (is_child) {
+ return _talloc_free(ptr);
+ }
+ return -1;
+ }
+
+ if (unlikely(tc->flags & TALLOC_FLAG_LOOP)) {
+ /* we have a free loop - stop looping */
+ return 0;
+ }
+
+ if (unlikely(tc->destructor)) {
+ talloc_destructor_t d = tc->destructor;
+ if (d == (talloc_destructor_t)-1) {
+ return -1;
+ }
+ tc->destructor = (talloc_destructor_t)-1;
+ if (d(ptr) == -1) {
+ tc->destructor = d;
+ return -1;
+ }
+ tc->destructor = NULL;
+ }
+
+ if (tc->parent) {
+ _TLIST_REMOVE(tc->parent->child, tc);
+ if (tc->parent->child) {
+ tc->parent->child->parent = tc->parent;
+ }
+ } else {
+ if (tc->prev) tc->prev->next = tc->next;
+ if (tc->next) tc->next->prev = tc->prev;
+ }
+
+ tc->flags |= TALLOC_FLAG_LOOP;
+
+ while (tc->child) {
+ /* we need to work out who will own an abandoned child
+ if it cannot be freed. In priority order, the first
+ choice is owner of any remaining reference to this
+ pointer, the second choice is our parent, and the
+ final choice is the null context. */
+ void *child = TC_PTR_FROM_CHUNK(tc->child);
+ const void *new_parent = null_context;
+ if (unlikely(tc->child->refs)) {
+ struct talloc_chunk *p = talloc_parent_chunk(tc->child->refs);
+ if (p) new_parent = TC_PTR_FROM_CHUNK(p);
+ }
+ if (unlikely(_talloc_free(child) == -1)) {
+ if (new_parent == null_context) {
+ struct talloc_chunk *p = talloc_parent_chunk(ptr);
+ if (p) new_parent = TC_PTR_FROM_CHUNK(p);
+ }
+ talloc_steal(new_parent, child);
+ }
+ }
+
+ tc->flags |= TALLOC_FLAG_FREE;
+ free(tc);
+ return 0;
+}
+
+/*
+ move a lump of memory from one talloc context to another return the
+ ptr on success, or NULL if it could not be transferred.
+ passing NULL as ptr will always return NULL with no side effects.
+*/
+void *_talloc_steal(const void *new_ctx, const void *ptr)
+{
+ struct talloc_chunk *tc, *new_tc;
+
+ if (unlikely(!ptr)) {
+ return NULL;
+ }
+
+ if (unlikely(new_ctx == NULL)) {
+ new_ctx = null_context;
+ }
+
+ tc = talloc_chunk_from_ptr(ptr);
+
+ if (unlikely(new_ctx == NULL)) {
+ if (tc->parent) {
+ _TLIST_REMOVE(tc->parent->child, tc);
+ if (tc->parent->child) {
+ tc->parent->child->parent = tc->parent;
+ }
+ } else {
+ if (tc->prev) tc->prev->next = tc->next;
+ if (tc->next) tc->next->prev = tc->prev;
+ }
+
+ tc->parent = tc->next = tc->prev = NULL;
+ return discard_const_p(void, ptr);
+ }
+
+ new_tc = talloc_chunk_from_ptr(new_ctx);
+
+ if (unlikely(tc == new_tc || tc->parent == new_tc)) {
+ return discard_const_p(void, ptr);
+ }
+
+ if (tc->parent) {
+ _TLIST_REMOVE(tc->parent->child, tc);
+ if (tc->parent->child) {
+ tc->parent->child->parent = tc->parent;
+ }
+ } else {
+ if (tc->prev) tc->prev->next = tc->next;
+ if (tc->next) tc->next->prev = tc->prev;
+ }
+
+ tc->parent = new_tc;
+ if (new_tc->child) new_tc->child->parent = NULL;
+ _TLIST_ADD(new_tc->child, tc);
+
+ return discard_const_p(void, ptr);
+}
+
+
+
/*
remove a secondary reference to a pointer. This undo's what
talloc_reference() has done. The context and pointer arguments
@@ -279,7 +486,7 @@ static int talloc_unreference(const void *context, const void *ptr)
struct talloc_chunk *tc = talloc_chunk_from_ptr(ptr);
struct talloc_reference_handle *h;
- if (context == NULL) {
+ if (unlikely(context == NULL)) {
context = null_context;
}
@@ -295,7 +502,7 @@ static int talloc_unreference(const void *context, const void *ptr)
return -1;
}
- return talloc_free(h);
+ return _talloc_free(h);
}
/*
@@ -332,7 +539,7 @@ int talloc_unlink(const void *context, void *ptr)
tc_p = talloc_chunk_from_ptr(ptr);
if (tc_p->refs == NULL) {
- return talloc_free(ptr);
+ return _talloc_free(ptr);
}
new_p = talloc_parent_chunk(tc_p->refs);
@@ -360,8 +567,8 @@ static const char *talloc_set_name_v(const void *ptr, const char *fmt, va_list a
{
struct talloc_chunk *tc = talloc_chunk_from_ptr(ptr);
tc->name = talloc_vasprintf(ptr, fmt, ap);
- if (tc->name) {
- talloc_set_name_const(tc->name, ".name");
+ if (likely(tc->name)) {
+ _talloc_set_name_const(tc->name, ".name");
}
return tc->name;
}
@@ -379,15 +586,6 @@ const char *talloc_set_name(const void *ptr, const char *fmt, ...)
return name;
}
-/*
- more efficient way to add a name to a pointer - the name must point to a
- true string constant
-*/
-void talloc_set_name_const(const void *ptr, const char *name)
-{
- struct talloc_chunk *tc = talloc_chunk_from_ptr(ptr);
- tc->name = name;
-}
/*
create a named talloc pointer. Any talloc pointer can be named, and
@@ -400,15 +598,15 @@ void *talloc_named(const void *context, size_t size, const char *fmt, ...)
void *ptr;
const char *name;
- ptr = _talloc(context, size);
- if (ptr == NULL) return NULL;
+ ptr = __talloc(context, size);
+ if (unlikely(ptr == NULL)) return NULL;
va_start(ap, fmt);
name = talloc_set_name_v(ptr, fmt, ap);
va_end(ap);
- if (name == NULL) {
- talloc_free(ptr);
+ if (unlikely(name == NULL)) {
+ _talloc_free(ptr);
return NULL;
}
@@ -416,34 +614,15 @@ void *talloc_named(const void *context, size_t size, const char *fmt, ...)
}
/*
- create a named talloc pointer. Any talloc pointer can be named, and
- talloc_named() operates just like talloc() except that it allows you
- to name the pointer.
-*/
-void *talloc_named_const(const void *context, size_t size, const char *name)
-{
- void *ptr;
-
- ptr = _talloc(context, size);
- if (ptr == NULL) {
- return NULL;
- }
-
- talloc_set_name_const(ptr, name);
-
- return ptr;
-}
-
-/*
return the name of a talloc ptr, or "UNNAMED"
*/
const char *talloc_get_name(const void *ptr)
{
struct talloc_chunk *tc = talloc_chunk_from_ptr(ptr);
- if (tc->name == TALLOC_MAGIC_REFERENCE) {
+ if (unlikely(tc->name == TALLOC_MAGIC_REFERENCE)) {
return ".reference";
}
- if (tc->name) {
+ if (likely(tc->name)) {
return tc->name;
}
return "UNNAMED";
@@ -457,9 +636,9 @@ const char *talloc_get_name(const void *ptr)
void *talloc_check_name(const void *ptr, const char *name)
{
const char *pname;
- if (ptr == NULL) return NULL;
+ if (unlikely(ptr == NULL)) return NULL;
pname = talloc_get_name(ptr);
- if (pname == name || strcmp(pname, name) == 0) {
+ if (likely(pname == name || strcmp(pname, name) == 0)) {
return discard_const_p(void, ptr);
}
return NULL;
@@ -482,15 +661,15 @@ void *talloc_init(const char *fmt, ...)
*/
talloc_enable_null_tracking();
- ptr = _talloc(NULL, 0);
- if (ptr == NULL) return NULL;
+ ptr = __talloc(NULL, 0);
+ if (unlikely(ptr == NULL)) return NULL;
va_start(ap, fmt);
name = talloc_set_name_v(ptr, fmt, ap);
va_end(ap);
- if (name == NULL) {
- talloc_free(ptr);
+ if (unlikely(name == NULL)) {
+ _talloc_free(ptr);
return NULL;
}
@@ -506,7 +685,7 @@ void talloc_free_children(void *ptr)
{
struct talloc_chunk *tc;
- if (ptr == NULL) {
+ if (unlikely(ptr == NULL)) {
return;
}
@@ -520,11 +699,11 @@ void talloc_free_children(void *ptr)
final choice is the null context. */
void *child = TC_PTR_FROM_CHUNK(tc->child);
const void *new_parent = null_context;
- if (tc->child->refs) {
+ if (unlikely(tc->child->refs)) {
struct talloc_chunk *p = talloc_parent_chunk(tc->child->refs);
if (p) new_parent = TC_PTR_FROM_CHUNK(p);
}
- if (talloc_free(child) == -1) {
+ if (unlikely(_talloc_free(child) == -1)) {
if (new_parent == null_context) {
struct talloc_chunk *p = talloc_parent_chunk(ptr);
if (p) new_parent = TC_PTR_FROM_CHUNK(p);
@@ -535,6 +714,32 @@ void talloc_free_children(void *ptr)
}
/*
+ Allocate a bit of memory as a child of an existing pointer
+*/
+void *_talloc(const void *context, size_t size)
+{
+ return __talloc(context, size);
+}
+
+/*
+ externally callable talloc_set_name_const()
+*/
+void talloc_set_name_const(const void *ptr, const char *name)
+{
+ _talloc_set_name_const(ptr, name);
+}
+
+/*
+ create a named talloc pointer. Any talloc pointer can be named, and
+ talloc_named() operates just like talloc() except that it allows you
+ to name the pointer.
+*/
+void *talloc_named_const(const void *context, size_t size, const char *name)
+{
+ return _talloc_named_const(context, size, name);
+}
+
+/*
free a talloc pointer. This also frees all child pointers of this
pointer recursively
@@ -544,68 +749,7 @@ void talloc_free_children(void *ptr)
*/
int talloc_free(void *ptr)
{
- struct talloc_chunk *tc;
- int old_errno;
-
- if (ptr == NULL) {
- return -1;
- }
-
- tc = talloc_chunk_from_ptr(ptr);
-
- if (tc->refs) {
- int is_child;
- /* check this is a reference from a child or grantchild
- * back to it's parent or grantparent
- *
- * in that case we need to remove the reference and
- * call another instance of talloc_free() on the current
- * pointer.
- */
- is_child = talloc_is_parent(tc->refs, ptr);
- talloc_free(tc->refs);
- if (is_child) {
- return talloc_free(ptr);
- }
- return -1;
- }
-
- if (tc->flags & TALLOC_FLAG_LOOP) {
- /* we have a free loop - stop looping */
- return 0;
- }
-
- if (tc->destructor) {
- talloc_destructor_t d = tc->destructor;
- if (d == (talloc_destructor_t)-1) {
- return -1;
- }
- tc->destructor = (talloc_destructor_t)-1;
- if (d(ptr) == -1) {
- tc->destructor = d;
- return -1;
- }
- tc->destructor = NULL;
- }
-
- if (tc->parent) {
- _TLIST_REMOVE(tc->parent->child, tc);
- if (tc->parent->child) {
- tc->parent->child->parent = tc->parent;
- }
- } else {
- if (tc->prev) tc->prev->next = tc->next;
- if (tc->next) tc->next->prev = tc->prev;
- }
-
- tc->flags |= TALLOC_FLAG_LOOP;
- talloc_free_children(ptr);
-
- tc->flags |= TALLOC_FLAG_FREE;
- old_errno = errno;
- free(tc);
- errno = old_errno;
- return 0;
+ return _talloc_free(ptr);
}
@@ -620,24 +764,24 @@ void *_talloc_realloc(const void *context, void *ptr, size_t size, const char *n
void *new_ptr;
/* size zero is equivalent to free() */
- if (size == 0) {
- talloc_free(ptr);
+ if (unlikely(size == 0)) {
+ _talloc_free(ptr);
return NULL;
}
- if (size >= MAX_TALLOC_SIZE) {
+ if (unlikely(size >= MAX_TALLOC_SIZE)) {
return NULL;
}
/* realloc(NULL) is equavalent to malloc() */
if (ptr == NULL) {
- return talloc_named_const(context, size, name);
+ return _talloc_named_const(context, size, name);
}
tc = talloc_chunk_from_ptr(ptr);
/* don't allow realloc on referenced pointers */
- if (tc->refs) {
+ if (unlikely(tc->refs)) {
return NULL;
}
@@ -653,7 +797,7 @@ void *_talloc_realloc(const void *context, void *ptr, size_t size, const char *n
#else
new_ptr = realloc(tc, size + TC_HDR_SIZE);
#endif
- if (!new_ptr) {
+ if (unlikely(!new_ptr)) {
tc->flags &= ~TALLOC_FLAG_FREE;
return NULL;
}
@@ -675,68 +819,11 @@ void *_talloc_realloc(const void *context, void *ptr, size_t size, const char *n
}
tc->size = size;
- talloc_set_name_const(TC_PTR_FROM_CHUNK(tc), name);
+ _talloc_set_name_const(TC_PTR_FROM_CHUNK(tc), name);
return TC_PTR_FROM_CHUNK(tc);
}
-/*
- move a lump of memory from one talloc context to another return the
- ptr on success, or NULL if it could not be transferred.
- passing NULL as ptr will always return NULL with no side effects.
-*/
-void *_talloc_steal(const void *new_ctx, const void *ptr)
-{
- struct talloc_chunk *tc, *new_tc;
-
- if (!ptr) {
- return NULL;
- }
-
- if (new_ctx == NULL) {
- new_ctx = null_context;
- }
-
- tc = talloc_chunk_from_ptr(ptr);
-
- if (new_ctx == NULL) {
- if (tc->parent) {
- _TLIST_REMOVE(tc->parent->child, tc);
- if (tc->parent->child) {
- tc->parent->child->parent = tc->parent;
- }
- } else {
- if (tc->prev) tc->prev->next = tc->next;
- if (tc->next) tc->next->prev = tc->prev;
- }
-
- tc->parent = tc->next = tc->prev = NULL;
- return discard_const_p(void, ptr);
- }
-
- new_tc = talloc_chunk_from_ptr(new_ctx);
-
- if (tc == new_tc || tc->parent == new_tc) {
- return discard_const_p(void, ptr);
- }
-
- if (tc->parent) {
- _TLIST_REMOVE(tc->parent->child, tc);
- if (tc->parent->child) {
- tc->parent->child->parent = tc->parent;
- }
- } else {
- if (tc->prev) tc->prev->next = tc->next;
- if (tc->next) tc->next->prev = tc->prev;
- }
-
- tc->parent = new_tc;
- if (new_tc->child) new_tc->child->parent = NULL;
- _TLIST_ADD(new_tc->child, tc);
-
- return discard_const_p(void, ptr);
-}
-
/*
a wrapper around talloc_steal() for situations where you are moving a pointer
between two structures, and want the old pointer to be set to NULL
@@ -880,12 +967,12 @@ static void talloc_report_depth_FILE_helper(const void *ptr, int depth, int max_
return;
}
- fprintf(f, "%*s%-30s contains %6lu bytes in %3lu blocks (ref %d)\n",
+ fprintf(f, "%*s%-30s contains %6lu bytes in %3lu blocks (ref %d) %p\n",
depth*4, "",
name,
(unsigned long)talloc_total_size(ptr),
(unsigned long)talloc_total_blocks(ptr),
- (int)talloc_reference_count(ptr));
+ (int)talloc_reference_count(ptr), ptr);
#if 0
fprintf(f, "content: ");
@@ -956,7 +1043,7 @@ static void talloc_report_null_full(void)
void talloc_enable_null_tracking(void)
{
if (null_context == NULL) {
- null_context = talloc_named_const(NULL, 0, "null_context");
+ null_context = _talloc_named_const(NULL, 0, "null_context");
}
}
@@ -965,7 +1052,7 @@ void talloc_enable_null_tracking(void)
*/
void talloc_disable_null_tracking(void)
{
- talloc_free(null_context);
+ _talloc_free(null_context);
null_context = NULL;
}
@@ -992,7 +1079,7 @@ void talloc_enable_leak_report_full(void)
*/
void *_talloc_zero(const void *ctx, size_t size, const char *name)
{
- void *p = talloc_named_const(ctx, size, name);
+ void *p = _talloc_named_const(ctx, size, name);
if (p) {
memset(p, '\0', size);
@@ -1007,9 +1094,9 @@ void *_talloc_zero(const void *ctx, size_t size, const char *name)
*/
void *_talloc_memdup(const void *t, const void *p, size_t size, const char *name)
{
- void *newp = talloc_named_const(t, size, name);
+ void *newp = _talloc_named_const(t, size, name);
- if (newp) {
+ if (likely(newp)) {
memcpy(newp, p, size);
}
@@ -1026,8 +1113,8 @@ char *talloc_strdup(const void *t, const char *p)
return NULL;
}
ret = (char *)talloc_memdup(t, p, strlen(p) + 1);
- if (ret) {
- talloc_set_name_const(ret, ret);
+ if (likely(ret)) {
+ _talloc_set_name_const(ret, ret);
}
return ret;
}
@@ -1066,11 +1153,11 @@ char *talloc_strndup(const void *t, const char *p, size_t n)
for (len=0; len<n && p[len]; len++) ;
- ret = (char *)_talloc(t, len + 1);
+ ret = (char *)__talloc(t, len + 1);
if (!ret) { return NULL; }
memcpy(ret, p, len);
ret[len] = 0;
- talloc_set_name_const(ret, ret);
+ _talloc_set_name_const(ret, ret);
return ret;
}
@@ -1096,11 +1183,11 @@ char *talloc_vasprintf(const void *t, const char *fmt, va_list ap)
return NULL;
}
- ret = (char *)_talloc(t, len+1);
+ ret = (char *)__talloc(t, len+1);
if (ret) {
va_copy(ap2, ap);
vsnprintf(ret, len+1, fmt, ap2);
- talloc_set_name_const(ret, ret);
+ _talloc_set_name_const(ret, ret);
}
return ret;
@@ -1160,7 +1247,7 @@ char *talloc_vasprintf_append(char *s, const char *fmt, va_list ap)
va_copy(ap2, ap);
vsnprintf(s+s_len, len+1, fmt, ap2);
- talloc_set_name_const(s, s);
+ _talloc_set_name_const(s, s);
return s;
}
@@ -1188,7 +1275,7 @@ void *_talloc_array(const void *ctx, size_t el_size, unsigned count, const char
if (count >= MAX_TALLOC_SIZE/el_size) {
return NULL;
}
- return talloc_named_const(ctx, el_size * count, name);
+ return _talloc_named_const(ctx, el_size * count, name);
}
/*
@@ -1233,7 +1320,7 @@ static int talloc_autofree_destructor(void *ptr)
static void talloc_autofree(void)
{
- talloc_free(autofree_context);
+ _talloc_free(autofree_context);
}
/*
@@ -1243,7 +1330,7 @@ static void talloc_autofree(void)
void *talloc_autofree_context(void)
{
if (autofree_context == NULL) {
- autofree_context = talloc_named_const(NULL, 0, "autofree_context");
+ autofree_context = _talloc_named_const(NULL, 0, "autofree_context");
talloc_set_destructor(autofree_context, talloc_autofree_destructor);
atexit(talloc_autofree);
}
@@ -1307,6 +1394,7 @@ void talloc_show_parents(const void *context, FILE *file)
tc = tc->parent;
}
}
+ fflush(file);
}
/*