Improve and simplify the memory layout of `MPMCQueue`

1 files changed, 10 insertions, 5 deletions

diff --git a/src/array.cpp b/src/array.cpp
index a7c9204b0..a2c802168 100644
--- a/src/array.cpp
+++ b/src/array.cpp
@@ -326,12 +326,17 @@ void array_set_capacity(Array<T> *array, isize capacity) {
 		array_resize(array, capacity);
 	}
 
-	T *new_data = nullptr;
-	if (capacity > 0) {
-		new_data = gb_alloc_array(array->allocator, T, capacity);
-		gb_memmove(new_data, array->data, gb_size_of(T) * array->capacity);
+	// NOTE(bill): try gb_resize_align first, and then fallback to alloc+memmove+free
+	isize old_size = array->capacity * gb_size_of(T);
+	isize new_size = capacity * gb_size_of(T);
+	T *new_data = cast(T *)gb_resize_align(array->allocator, array->data, old_size, new_size, gb_align_of(T));
+	if (new_data == nullptr) {
+		if (capacity > 0) {
+			new_data = gb_alloc_array(array->allocator, T, capacity);
+			gb_memmove(new_data, array->data, gb_size_of(T) * array->capacity);
+		}
+		gb_free(array->allocator, array->data);
 	}
-	gb_free(array->allocator, array->data);
 	array->data = new_data;
 	array->capacity = capacity;
 }