From 3ad39e9878310e5317ee73c9b353c1e2c1c5c4ee Mon Sep 17 00:00:00 2001 From: Richard Qin Date: Sat, 11 Jul 2026 22:48:30 +0800 Subject: lib: establish Zircon libc++ and KTL foundation --- lib/ktl/include/__external_threading | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 lib/ktl/include/__external_threading (limited to 'lib/ktl/include/__external_threading') diff --git a/lib/ktl/include/__external_threading b/lib/ktl/include/__external_threading new file mode 100644 index 0000000..9cec903 --- /dev/null +++ b/lib/ktl/include/__external_threading @@ -0,0 +1,35 @@ +// Copyright 2020 The Fuchsia Authors +// +// Use of this source code is governed by a MIT-style +// license that can be found in the LICENSE file or at +// https://opensource.org/licenses/MIT + +#ifndef ZIRCON_KERNEL_LIB_KTL_INCLUDE___EXTERNAL_THREADING +#define ZIRCON_KERNEL_LIB_KTL_INCLUDE___EXTERNAL_THREADING + +// libc++'s includes this file via <__threading_support>. It needs +// these types and functions declared, but only for use in interfaces that +// aren't supported in the kernel, so stub declarations are all they need. + +_LIBCPP_BEGIN_NAMESPACE_STD + +struct __libcpp_timespec_t { + long int tv_sec, tv_nsec; +}; + +using __libcpp_thread_id = int; + +bool __libcpp_thread_id_equal(__libcpp_thread_id, __libcpp_thread_id); +bool __libcpp_thread_id_less(__libcpp_thread_id, __libcpp_thread_id); +__libcpp_thread_id __libcpp_thread_get_current_id(); + +void __libcpp_thread_sleep_for(chrono::nanoseconds); +void __libcpp_thread_yield(); + +// This macro is used unconditionally in <__threading_support> but defined +// there only conditionally on when <__external_threading> is not used. +#define _LIBCPP_THREAD_ABI_VISIBILITY inline _LIBCPP_INLINE_VISIBILITY + +_LIBCPP_END_NAMESPACE_STD + +#endif // ZIRCON_KERNEL_LIB_KTL_INCLUDE___EXTERNAL_THREADING -- cgit v1.2.3