build(deps): vendor JUCE 7.0.12

2026-09-08 14:55:21 +02:00
parent 5b99f51bd1
commit d6705ab29f
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+/*
+  ==============================================================================
+
+   This file is part of the JUCE library.
+   Copyright (c) 2022 - Raw Material Software Limited
+
+   JUCE is an open source library subject to commercial or open-source
+   licensing.
+
+   The code included in this file is provided under the terms of the ISC license
+   http://www.isc.org/downloads/software-support-policy/isc-license. Permission
+   To use, copy, modify, and/or distribute this software for any purpose with or
+   without fee is hereby granted provided that the above copyright notice and
+   this permission notice appear in all copies.
+
+   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
+   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
+   DISCLAIMED.
+
+  ==============================================================================
+*/
+
+namespace juce
+{
+    /** Manages a set of ChildProcesses and periodically checks their return value. Upon completion
+        it calls listeners added with addChildProcessExitedListener().
+
+        This class is mostly aimed for usage on Linux, where terminated child processes are only
+        cleaned up if their return code is read after termination. In order to ensure this one needs
+        to call ChildProcess::isFinished() until it returns false or
+        ChildProcess::waitForProcessToFinish() until it returns true.
+
+        This class will keep querying the return code on a Timer thread until the process
+        terminates. This can be handy if one wants to start and stop multiple ChildProcesses on
+        Linux that could take a long time to complete.
+
+        Since this class uses a Timer to check subprocess status, it's generally only safe to
+        access the returned ChildProcesses from the message thread.
+
+        @see ChildProcessManagerSingleton
+
+        @tags{Events}
+    */
+    class JUCE_API  ChildProcessManager final : private DeletedAtShutdown
+    {
+    public:
+       #ifndef DOXYGEN
+        JUCE_DECLARE_SINGLETON_SINGLETHREADED_MINIMAL (ChildProcessManager)
+       #endif
+
+        /** Creates a new ChildProcess and starts it with the provided arguments.
+
+            The arguments are the same as the overloads to ChildProcess::start().
+
+            The manager will keep the returned ChildProcess object alive until it terminates and its
+            return value has been queried. Calling ChildProcess::kill() on the returned object will
+            eventually cause its removal from the ChildProcessManager after it terminates.
+        */
+        template <typename... Args>
+        std::shared_ptr<ChildProcess> createAndStartManagedChildProcess (Args&&... args)
+        {
+            auto p = std::make_shared<ChildProcess>();
+
+            if (! p->start (std::forward<Args> (args)...))
+                return nullptr;
+
+            processes.insert (p);
+            timer.startTimer (1000);
+
+            return p;
+        }
+
+        /** Registers a callback function that is called for every ChildProcess that terminated.
+
+            This registration is deleted when the returned ErasedScopedGuard is deleted.
+        */
+        auto addChildProcessExitedListener (std::function<void (ChildProcess*)> listener)
+        {
+            return listeners.addListener (std::move (listener));
+        }
+
+        /** Returns true if the ChildProcessManager contains any running ChildProcesses that it's
+            monitoring.
+        */
+        auto hasRunningProcess() const
+        {
+            return timer.isTimerRunning();
+        }
+
+    private:
+        ChildProcessManager() = default;
+        ~ChildProcessManager() override  { clearSingletonInstance(); }
+
+        void checkProcesses();
+
+        std::set<std::shared_ptr<ChildProcess>> processes;
+        detail::CallbackListenerList<ChildProcess*> listeners;
+        TimedCallback timer { [this] { checkProcesses(); } };
+    };
+
+} // namespace juce