diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:06:44 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:06:44 +0000 |
commit | ed5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch) | |
tree | 7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /include/systools/win32/retry_if_failed.hxx | |
parent | Initial commit. (diff) | |
download | libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.tar.xz libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.zip |
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/systools/win32/retry_if_failed.hxx')
-rw-r--r-- | include/systools/win32/retry_if_failed.hxx | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/include/systools/win32/retry_if_failed.hxx b/include/systools/win32/retry_if_failed.hxx new file mode 100644 index 000000000..1372843ab --- /dev/null +++ b/include/systools/win32/retry_if_failed.hxx @@ -0,0 +1,38 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */ +/* + * This file is part of the LibreOffice project. + * + * 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 http://mozilla.org/MPL/2.0/. + */ + +#pragma once + +#include <type_traits> +#include <systools/win32/uwinapi.h> + +#pragma comment(lib, "Kernel32.lib") // for Sleep + +namespace sal::systools +{ +// Some system calls (e.g., clipboard access functions) may fail first time, because the resource +// may only be accessed by one process at a time. This function allows to retry failed call up to +// specified number of times with a specified timeout (in ms), until the call succeeds or the limit +// of attempts is exceeded. +// Usage: +// HRESULT hr = sal::systools::RetryIfFailed(10, 100, []{ return OleFlushClipboard(); }); +template <typename Func> +std::enable_if_t<std::is_same_v<std::invoke_result_t<Func>, HRESULT>, HRESULT> +RetryIfFailed(unsigned times, unsigned msTimeout, Func func) +{ + for (unsigned i = 0;; ++i) + { + if (HRESULT hr = func(); SUCCEEDED(hr) || i >= times) + return hr; + Sleep(msTimeout); + } +} +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */ |