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math: make cast return optional instead of an error

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This commit is contained in:
Ali Chraghi
2022-05-22 19:36:59 +04:30
committed by Andrew Kelley
parent ddd5b57045
commit 0e6285c8fc
37 changed files with 152 additions and 175 deletions
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4
lib/std/Thread.zig
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@@ -88,7 +88,7 @@ pub fn setName(self: Thread, name: []const u8) SetNameError!void {
.windows => {
var buf: [max_name_len]u16 = undefined;
const len = try std.unicode.utf8ToUtf16Le(&buf, name);
const byte_len = math.cast(c_ushort, len * 2) catch return error.NameTooLong;
const byte_len = math.cast(c_ushort, len * 2) orelse return error.NameTooLong;
// Note: NT allocates its own copy, no use-after-free here.
const unicode_string = os.windows.UNICODE_STRING{
@@ -526,7 +526,7 @@ const WindowsThreadImpl = struct {
// Windows appears to only support SYSTEM_INFO.dwAllocationGranularity minimum stack size.
// Going lower makes it default to that specified in the executable (~1mb).
// Its also fine if the limit here is incorrect as stack size is only a hint.
var stack_size = std.math.cast(u32, config.stack_size) catch std.math.maxInt(u32);
var stack_size = std.math.cast(u32, config.stack_size) orelse std.math.maxInt(u32);
stack_size = std.math.max(64 * 1024, stack_size);
instance.thread.thread_handle = windows.kernel32.CreateThread(