From 6ed8aac6bbf35165646a147f5b16881024074ce8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9D=8E=E9=80=9A=E6=B4=B2?= <zhangsongcui3371@sina.com>
Date: Fri, 13 Mar 2026 09:52:18 +0800
Subject: [PATCH] FFlist: adds `ffListReserve`

---
 src/common/FFlist.h      | 9 +++++++++
 src/common/impl/FFlist.c | 6 +-----
 2 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/src/common/FFlist.h b/src/common/FFlist.h
index 4ef1239bd..ec7801212 100644
--- a/src/common/FFlist.h
+++ b/src/common/FFlist.h
@@ -106,6 +106,15 @@ static inline void ffListClear(FFlist* list)
     list->length = 0;
 }
 
+static inline void ffListReserve(FFlist* list, uint32_t newCapacity)
+{
+    if (__builtin_expect(newCapacity <= list->capacity, false))
+        return;
+
+    list->data = (uint8_t*) realloc(list->data, (size_t) newCapacity * list->elementSize);
+    list->capacity = newCapacity;
+}
+
 #define FF_LIST_FOR_EACH(itemType, itemVarName, listVar) \
     assert(sizeof(itemType) == (listVar).elementSize); \
     for(itemType* itemVarName = (itemType*)(listVar).data; \
diff --git a/src/common/impl/FFlist.c b/src/common/impl/FFlist.c
index 55dc28671..f389ced41 100644
--- a/src/common/impl/FFlist.c
+++ b/src/common/impl/FFlist.c
@@ -6,11 +6,7 @@
 void* ffListAdd(FFlist* list)
 {
     if(list->length == list->capacity)
-    {
-        list->capacity = list->capacity == 0 ? FF_LIST_DEFAULT_ALLOC : list->capacity * 2;
-        // realloc(NULL, newSize) is same as malloc(newSize)
-        list->data = realloc(list->data, (size_t)list->capacity * list->elementSize);
-    }
+        ffListReserve(list, list->capacity == 0 ? FF_LIST_DEFAULT_ALLOC : list->capacity * 2);
 
     ++list->length;
     return ffListGet(list, list->length - 1);