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insert balance doesn't need parent #4

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insert balance doesn't need parent #4

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0a391bb
insert balance doesn't need parent
epsilon-0 Aug 26, 2024
28ff2ca
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epsilon-0 Aug 26, 2024
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12 changes: 7 additions & 5 deletions include/tree.h
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Original file line number Diff line number Diff line change
Expand Up @@ -333,14 +333,15 @@ name##_RB_RANK(const struct type *elm) \
#define _RB_GENERATE_INSERT(name, type, field, cmp, attr) \
\
attr struct type * \
name##_RB_INSERT_BALANCE(struct name *head, struct type *parent, \
struct type *elm) \
name##_RB_INSERT_BALANCE(struct name *head, struct type *elm) \
{ \
struct type *child, *gpar; \
struct type *child, *gpar, *parent; \
uintptr_t elmdir, sibdir; \
\
child = NULL; \
gpar = NULL; \
_RB_GET_PARENT(elm, parent, field); \
_RB_STACK_POP(head, parent); \
do { \
/* elm has not been promoted yet */ \
_RB_ASSERT(parent != NULL); \
Expand Down Expand Up @@ -390,15 +391,16 @@ name##_RB_INSERT_BALANCE(struct name *head, struct type *parent, \
/* Inserts a node into the RB tree */ \
attr struct type * \
name##_RB_INSERT_FINISH(struct name *head, struct type *parent, \
uintptr_t insdir, struct type *elm) \
uintptr_t insdir, struct type *elm) \
{ \
struct type *tmp = elm; \
_RB_SET_PARENT(elm, parent, field); \
_RB_STACK_PUSH(head, parent); \
if (_RB_GET_CHILD(parent, insdir, field)) \
_RB_SET_CHILD(parent, insdir, elm, field); \
else { \
_RB_SET_CHILD(parent, insdir, elm, field); \
tmp = name##_RB_INSERT_BALANCE(head, parent, elm); \
tmp = name##_RB_INSERT_BALANCE(head, elm); \
_RB_STACK_POP(head, parent); \
_RB_GET_PARENT(tmp, parent, field); \
} \
Expand Down
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