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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 07:24:22 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 07:24:22 +0000
commit45d6379135504814ab723b57f0eb8be23393a51d (patch)
treed4f2ec4acca824a8446387a758b0ce4238a4dffa /lib/isc/win32/once.c
parentInitial commit. (diff)
downloadbind9-45d6379135504814ab723b57f0eb8be23393a51d.tar.xz
bind9-45d6379135504814ab723b57f0eb8be23393a51d.zip
Adding upstream version 1:9.16.44.upstream/1%9.16.44upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--lib/isc/win32/once.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/lib/isc/win32/once.c b/lib/isc/win32/once.c
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--- /dev/null
+++ b/lib/isc/win32/once.c
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+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#include <windows.h>
+
+#include <isc/assertions.h>
+#include <isc/once.h>
+#include <isc/util.h>
+
+isc_result_t
+isc_once_do(isc_once_t *controller, void (*function)(void)) {
+ REQUIRE(controller != NULL && function != NULL);
+
+ if (controller->status == ISC_ONCE_INIT_NEEDED) {
+ if (InterlockedDecrement(&controller->counter) == 0) {
+ if (controller->status == ISC_ONCE_INIT_NEEDED) {
+ function();
+ controller->status = ISC_ONCE_INIT_DONE;
+ }
+ } else {
+ while (controller->status == ISC_ONCE_INIT_NEEDED) {
+ /*
+ * Sleep(0) indicates that this thread
+ * should be suspended to allow other
+ * waiting threads to execute.
+ */
+ Sleep(0);
+ }
+ }
+ }
+
+ return (ISC_R_SUCCESS);
+}