v1.2.3

arena.h

@@ -1,4 +1,4 @@
-// arena.h - v1.2.2 - MIT License
+// arena.h - v1.2.3 - MIT License
 // single header library for region-based memory management.
 //
 // [License and changelog]
@@ -96,6 +96,12 @@
 // This function allocates a buffer of <size> bytes into the specified arena
 // and returns it's pointer.
 //
+//     void *arena_calloc(Arena *a, size_t count, size_t size)
+//
+// This function allocates a buffer of <count> * <size> bytes into the
+// specified arena and returns it's pointer. The resulting buffer will be
+// zero-initialized just like the standard calloc() function.
+//
 //     void *arena_copy(Arena *a, const void *src, size_t size);
 //
 // This function allocates a buffer of <size> bytes into the arena and copies
@@ -218,6 +224,7 @@ void arena_trim(Arena *a);
 
 // Allocation and other utilities
 void *arena_alloc(Arena *a, size_t size);
+void *arena_calloc(Arena *a, size_t count, size_t size);
 void *arena_copy(Arena *a, const void *src, size_t size);
 char *arena_strdup(Arena *a, const char *s);
 char *arena_sprintf(Arena *a, const char *fmt, ...);
@@ -382,6 +389,22 @@ void *arena_alloc(Arena *a, size_t size)
     return a->tail->data;
 }
 
+void *arena_calloc(Arena *a, size_t count, size_t size)
+{
+    if (a == NULL) {
+        ARENA_ASSERT(false && "Invalid parameters");
+        return NULL;
+    }
+
+    void *result = arena_alloc(a, count * size);
+
+    if (result != NULL) {
+        memset(result, 0, count * size);
+    }
+
+    return result;
+}
+
 void *arena_copy(Arena *a, const void *src, size_t size)
 {
     if (a == NULL || src == NULL) {
@@ -518,6 +541,7 @@ size_t arena__align(size_t n)
 /*
  * Revision history:
  *
+ *     1.2.3 (2026-07-07) New function: arena_calloc()
  *     1.2.2 (2026-07-07) Fix various memory problems;
  *                        make ARENA_REGION_GROWTH_FACTOR an integer
  *     1.2.1 (2026-04-08) Region growth factor handling with new