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std.Thread: more compile error fixes

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This commit is contained in:
kprotty 2021-06-20 15:39:23 -05:00
parent 281a9a60f0
commit d016caaccb
1 changed files with 14 additions and 4 deletions
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18
lib/std/Thread.zig
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@ -10,6 +10,7 @@
const std = @import("std.zig");
const os = std.os;
const assert = std.debug.assert;
const target = std.Target.current;
const Atomic = std.atomic.Atomic;
@ -259,11 +260,20 @@ const WindowsThreadImpl = struct {
},
};
const stack_size = std.math.min(64 * 1024, std.math.cast(u32, config.stack_size) catch std.math.maxInt(u32));
const parameter = @ptrCast(*c_void, impl);
// 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);
stack_size = std.math.max(64 * 1024, stack_size);
instance.thread.thread_handle = windows.CreateThread(null, stack_size, Impl.entry, parameter, 0, null) orelse {
instance.thread.thread_handle = windows.CreateThread(
null,
stack_size,
Instance.entry,
@ptrCast(*c_void, instance),
0,
null,
) orelse {
return windows.unexpectedError(windows.kernel32.GetLastError());
};