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solve recursion in std.atomic.Queue.dump 

by adding a maximum depth
master
Andrew Kelley 2020-02-08 16:22:53 -05:00
parent 24d197b037
commit 6ae36807b7
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GPG Key ID: 7C5F548F728501A9
1 changed files with 13 additions and 4 deletions
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17
lib/std/atomic/queue.zig
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@ -113,11 +113,20 @@ pub fn Queue(comptime T: type) type {
pub fn dumpToStream(self: *Self, comptime Error: type, stream: *std.io.OutStream(Error)) Error!void {
const S = struct {
fn dumpRecursive(s: *std.io.OutStream(Error), optional_node: ?*Node, indent: usize) Error!void {
fn dumpRecursive(
s: *std.io.OutStream(Error),
optional_node: ?*Node,
indent: usize,
comptime depth: comptime_int,
) Error!void {
try s.writeByteNTimes(' ', indent);
if (optional_node) |node| {
try s.print("0x{x}={}\n", .{ @ptrToInt(node), node.data });
try dumpRecursive(s, node.next, indent + 1);
if (depth == 0) {
try s.print("(max depth)\n", .{});
return;
}
try dumpRecursive(s, node.next, indent + 1, depth - 1);
} else {
try s.print("(null)\n", .{});
}
@ -127,9 +136,9 @@ pub fn Queue(comptime T: type) type {
defer held.release();
try stream.print("head: ", .{});
try S.dumpRecursive(stream, self.head, 0);
try S.dumpRecursive(stream, self.head, 0, 4);
try stream.print("tail: ", .{});
try S.dumpRecursive(stream, self.tail, 0);
try S.dumpRecursive(stream, self.tail, 0, 4);
}
};
}