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authorDaniel Wilhelm <daniel@wili.li>2015-10-02 14:57:46 +0200
committerDaniel Wilhelm <daniel@wili.li>2015-10-02 14:57:46 +0200
commitad4e3d2c55e75193c41356c23619f80add41db18 (patch)
treedd836d120f50e472106e04968ef8185c25e4242e /zen/async_task.h
parent7.4 (diff)
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7.5
Diffstat (limited to 'zen/async_task.h')
-rw-r--r--zen/async_task.h73
1 files changed, 0 insertions, 73 deletions
diff --git a/zen/async_task.h b/zen/async_task.h
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index 76e7824f..00000000
--- a/zen/async_task.h
+++ /dev/null
@@ -1,73 +0,0 @@
-// **************************************************************************
-// * This file is part of the FreeFileSync project. It is distributed under *
-// * GNU General Public License: http://www.gnu.org/licenses/gpl-3.0 *
-// * Copyright (C) Zenju (zenju AT gmx DOT de) - All Rights Reserved *
-// **************************************************************************
-
-#ifndef ASYNC_JOB_839147839170432143214321
-#define ASYNC_JOB_839147839170432143214321
-
-#include <list>
-#include <functional>
-#include "thread.h"
-#include "scope_guard.h"
-
-
-namespace zen
-{
-//run a job in an async thread, but process result on GUI event loop
-class AsyncTasks
-{
-public:
- AsyncTasks() {}
-
- template <class Fun, class Fun2>
- void add(Fun runAsync, Fun2 evalOnGui)
- //equivalent to "evalOnGui(runAsync())"
- // -> runAsync: the usual thread-safety requirements apply!
- // -> evalOnGui: no thread-safety concerns, but must only reference variables with greater-equal lifetime than the AsyncTask instance!
- {
- tasks.push_back(zen::runAsync([=]() -> std::function<void()>
- {
- auto result = runAsync();
- return [=]{ evalOnGui(result); };
- }));
- }
-
- template <class Fun, class Fun2>
- void add2(Fun runAsync, Fun2 evalOnGui) //for evalOnGui taking no parameters
- {
- tasks.push_back(zen::runAsync([runAsync, evalOnGui]() -> std::function<void()> { runAsync(); return [evalOnGui]{ evalOnGui(); }; }));
- }
-
- void evalResults() //call from gui thread repreatedly
- {
- if (!inRecursion) //prevent implicit recursion, e.g. if we're called from an idle event and spawn another one via the callback below
- {
- inRecursion = true;
- ZEN_ON_SCOPE_EXIT(inRecursion = false);
-
- tasks.remove_if([](std::future<std::function<void()>>& ft) -> bool
- {
- if (isReady(ft))
- {
- (ft.get())();
- return true;
- }
- return false;
- });
- }
- }
-
- bool empty() const { return tasks.empty(); }
-
-private:
- AsyncTasks (const AsyncTasks&) = delete;
- AsyncTasks& operator=(const AsyncTasks&) = delete;
-
- bool inRecursion = false;
- std::list<std::future<std::function<void()>>> tasks;
-};
-}
-
-#endif //ASYNC_JOB_839147839170432143214321
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