1 files changed, 79 insertions, 0 deletions
diff --git a/lib/windows-cond.h b/lib/windows-cond.h
new file mode 100644
index 0000000..abc8ad4
--- /dev/null
+++ b/lib/windows-cond.h
@@ -0,0 +1,79 @@
+/* Condition variables (native Windows implementation).
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Yoann Vandoorselaere <yoann@prelude-ids.org>, 2008.
+   Based on Bruno Haible <bruno@clisp.org> lock.h */
+
+#ifndef _WINDOWS_COND_H
+#define _WINDOWS_COND_H
+
+#define WIN32_LEAN_AND_MEAN  /* avoid including junk */
+#include <windows.h>
+
+#include <time.h>
+
+#include "windows-initguard.h"
+
+#ifndef _glwthread_linked_waitqueue_link_defined
+#define _glwthread_linked_waitqueue_link_defined
+struct glwthread_waitqueue_link
+{
+  struct glwthread_waitqueue_link *wql_next;
+  struct glwthread_waitqueue_link *wql_prev;
+};
+#endif /* _glwthread_linked_waitqueue_link_defined */
+
+typedef struct
+        {
+          struct glwthread_waitqueue_link wq_list; /* circular list of waiting threads */
+        }
+        glwthread_linked_waitqueue_t;
+
+typedef struct
+        {
+          glwthread_initguard_t guard; /* protects the initialization */
+          CRITICAL_SECTION lock; /* protects the remaining fields */
+          glwthread_linked_waitqueue_t waiters; /* waiting threads */
+        }
+        glwthread_cond_t;
+
+#define GLWTHREAD_COND_INIT { GLWTHREAD_INITGUARD_INIT }
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern int glwthread_cond_init (glwthread_cond_t *cond);
+/* Here, to cope with the various types of mutexes, the mutex is a 'void *', and
+   the caller needs to pass the corresponding *_lock and *_unlock functions.  */
+extern int glwthread_cond_wait (glwthread_cond_t *cond,
+                                void *mutex,
+                                int (*mutex_lock) (void *),
+                                int (*mutex_unlock) (void *));
+extern int glwthread_cond_timedwait (glwthread_cond_t *cond,
+                                     void *mutex,
+                                     int (*mutex_lock) (void *),
+                                     int (*mutex_unlock) (void *),
+                                     const struct timespec *abstime);
+extern int glwthread_cond_signal (glwthread_cond_t *cond);
+extern int glwthread_cond_broadcast (glwthread_cond_t *cond);
+extern int glwthread_cond_destroy (glwthread_cond_t *cond);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _WINDOWS_COND_H */