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Merge branch 'remove_extlib' into scheduler-framework

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Rongsong Shen 2026-09-04 06:49:06 +00:00
commit c4f2fec0d5
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7 changed files with 144 additions and 91 deletions
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src/include/xcelist.h Normal file
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#if !defined(__XCELIST_H__)
#define __XCELIST_H__ 1
/*
* Intrusive doubly-linked list.
*
* A list entry must have its `forw` and `back` pointers as its first two
* members so that a user-defined node (e.g. `struct { void* forw; void* back;
* ...payload... }`) can be safely cast to `xcelist_entry_t*`.
*
* The list head (`xcelist_t`) is itself layout-compatible with an entry: its
* `forw` field points to the first entry (or back to itself when empty) and
* its `back` field points to the last entry. `numEnts` tracks the entry count.
*
* This replaces the previously external `basiclib/list.h` (extralib) with the
* minimal subset of functionality actually used in-tree.
*/
typedef struct _xcelist_entry {
struct _xcelist_entry* forw;
struct _xcelist_entry* back;
} xcelist_entry_t;
typedef struct _xcelist {
/* head sentinel: must mirror xcelist_entry_t layout (forw/back first) */
xcelist_entry_t* forw;
xcelist_entry_t* back;
int numEnts;
char* name;
} xcelist_t;
/* Create an empty list. `name` is copied and may be NULL. Returns NULL on OOM. */
extern xcelist_t* list_create(const char* name);
/* Destroy a list. Does not free the entries; caller owns them. */
extern void list_destroy(xcelist_t* list);
/* Append `entry` to the back (tail) of `list`. */
extern void list_insert_entry_back(xcelist_t* list, xcelist_entry_t* entry);
/* Unlink `entry` from `list`. Does not free `entry`. */
extern void list_entry_remove(xcelist_t* list, xcelist_entry_t* entry);
#endif