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change tactics to arena allocator

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This commit is contained in:
jonathan santis 2024-10-31 13:06:15 +01:00
parent e8f1c62c66
commit 120c2d6242
1 changed files with 18 additions and 12 deletions
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30
primitives.zig
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@ -31,17 +31,19 @@ pub fn LinkedList() type {
const Node = struct { point: Point, next: ?*Node };
head: ?*Node,
length: u32,
allocator: std.mem.Allocator,
pub fn new() Self {
pub fn new(allocator: std.mem.Allocator) Self {
return .{
.head = null,
.length = 0,
.allocator = allocator,
};
}
pub fn add(self: *Self, allocator: std.mem.Allocator, point: Point) void {
pub fn add(self: *Self, allocator: std.mem.Allocator, point: Point) !void {
var newNode = allocator.create(Node) catch |err| {
std.debug.print("error allocation, {}", .{err});
return;
return err;
};
newNode.point = point;
@ -51,7 +53,7 @@ pub fn LinkedList() type {
self.length += 1;
}
pub fn dump(self: *Self) ![]Point {
const allocator = std.heap.page_allocator;
const allocator = self.allocator;
var node = self.head;
var point: []Point = &.{}; //empty slice
var i: usize = 0;
@ -70,20 +72,24 @@ pub fn LinkedList() type {
};
}
test "test linked list" {
var polygon = LinkedList().new();
polygon.add(std.heap.page_allocator, .{ .x = 10, .y = 11, .z = 0 });
polygon.add(std.heap.page_allocator, .{ .x = 11, .y = 12, .z = 0 });
polygon.add(std.heap.page_allocator, .{ .x = 12, .y = 13, .z = 0 });
polygon.add(std.heap.page_allocator, .{ .x = 12, .y = 14, .z = 0 });
polygon.add(std.heap.page_allocator, .{ .x = 12, .y = 15, .z = 0 });
polygon.add(std.heap.page_allocator, .{ .x = 12, .y = 16, .z = 0 });
var arena = std.heap.ArenaAllocator.init(std.heap.page_allocator);
const allocator = arena.allocator();
defer arena.deinit();
var polygon = LinkedList().new(allocator);
try polygon.add(allocator, .{ .x = 10, .y = 11, .z = 0 });
try polygon.add(allocator, .{ .x = 11, .y = 12, .z = 0 });
try polygon.add(allocator, .{ .x = 12, .y = 13, .z = 0 });
try polygon.add(allocator, .{ .x = 12, .y = 14, .z = 0 });
try polygon.add(allocator, .{ .x = 12, .y = 15, .z = 0 });
try polygon.add(allocator, .{ .x = 12, .y = 16, .z = 0 });
const points: []Point = try polygon.dump();
for (points) |point| {
std.debug.print("x:{}\n", .{point.x});
std.debug.print("y:{}\n", .{point.y});
std.debug.print("z:{}\n", .{point.z});
}
std.heap.page_allocator.free(points);
}
pub fn pixel(buffer: []u8, w: Winsize, x: i64, y: i64, symbol: u21) !void {