1 files changed, 55 insertions, 0 deletions
diff --git a/src/grep/gnulib-tests/windows-thread.h b/src/grep/gnulib-tests/windows-thread.h
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+++ b/src/grep/gnulib-tests/windows-thread.h
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+/* Creating and controlling threads (native Windows implementation).
+   Copyright (C) 2005-2021 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005.
+   Based on GCC's gthr-win32.h.  */
+
+#ifndef _WINDOWS_THREAD_H
+#define _WINDOWS_THREAD_H
+
+#define WIN32_LEAN_AND_MEAN  /* avoid including junk */
+#include <windows.h>
+
+/* The glwthread_thread_t is a pointer to a structure in memory.
+   Why not the thread handle?  If it were the thread handle, it would be hard
+   to implement glwthread_thread_self() (since GetCurrentThread () returns a
+   pseudo-handle, DuplicateHandle (GetCurrentThread ()) returns a handle that
+   must be closed afterwards, and there is no function for quickly retrieving
+   a thread handle from its id).
+   Why not the thread id?  I tried it.  It did not work: Sometimes ids appeared
+   that did not belong to running threads, and glthread_join failed with ESRCH.
+ */
+typedef struct glwthread_thread_struct *glwthread_thread_t;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* attr is a bit mask, consisting of the following bits: */
+#define GLWTHREAD_ATTR_DETACHED 1
+extern int glwthread_thread_create (glwthread_thread_t *threadp,
+                                    unsigned int attr,
+                                    void * (*func) (void *), void *arg);
+extern int glwthread_thread_join (glwthread_thread_t thread, void **retvalp);
+extern int glwthread_thread_detach (glwthread_thread_t thread);
+extern glwthread_thread_t glwthread_thread_self (void);
+extern _Noreturn void glwthread_thread_exit (void *retval);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _WINDOWS_THREAD_H */