Rewritten watch feature.

src/base/io/Watcher.cpp

@@ -0,0 +1,94 @@
+/* XMRig
+ * Copyright 2010      Jeff Garzik <jgarzik@pobox.com>
+ * Copyright 2012-2014 pooler      <pooler@litecoinpool.org>
+ * Copyright 2014      Lucas Jones <https://github.com/lucasjones>
+ * Copyright 2014-2016 Wolf9466    <https://github.com/OhGodAPet>
+ * Copyright 2016      Jay D Dee   <jayddee246@gmail.com>
+ * Copyright 2017-2018 XMR-Stak    <https://github.com/fireice-uk>, <https://github.com/psychocrypt>
+ * Copyright 2018-2019 SChernykh   <https://github.com/SChernykh>
+ * Copyright 2016-2019 XMRig       <https://github.com/xmrig>, <support@xmrig.com>
+ *
+ *   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 of the License, 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 <http://www.gnu.org/licenses/>.
+ */
+
+
+#include <uv.h>
+
+
+#include "base/kernel/interfaces/IWatcherListener.h"
+#include "base/io/Watcher.h"
+#include "base/tools/Handle.h"
+
+
+xmrig::Watcher::Watcher(const String &path, IWatcherListener *listener) :
+    m_listener(listener),
+    m_path(path)
+{
+    m_fsEvent = new uv_fs_event_t;
+    uv_fs_event_init(uv_default_loop(), m_fsEvent);
+
+    m_timer = new uv_timer_t;
+    uv_timer_init(uv_default_loop(), m_timer);
+
+    m_fsEvent->data = m_timer->data = this;
+
+    start();
+}
+
+
+xmrig::Watcher::~Watcher()
+{
+    Handle::close(m_timer);
+    Handle::close(m_fsEvent);
+}
+
+
+void xmrig::Watcher::onTimer(uv_timer_t *handle)
+{
+    static_cast<Watcher *>(handle->data)->reload();
+}
+
+
+void xmrig::Watcher::onFsEvent(uv_fs_event_t *handle, const char *filename, int, int)
+{
+    if (!filename) {
+        return;
+    }
+
+    static_cast<Watcher *>(handle->data)->queueUpdate();
+}
+
+
+void xmrig::Watcher::queueUpdate()
+{
+    uv_timer_stop(m_timer);
+    uv_timer_start(m_timer, xmrig::Watcher::onTimer, kDelay, 0);
+}
+
+
+void xmrig::Watcher::reload()
+{
+    m_listener->onFileChanged(m_path);
+
+#   ifndef _WIN32
+    uv_fs_event_stop(&m_fsEvent);
+    start();
+#   endif
+}
+
+
+void xmrig::Watcher::start()
+{
+    uv_fs_event_start(m_fsEvent, xmrig::Watcher::onFsEvent, m_path, 0);
+}

src/base/io/Watcher.h

@@ -0,0 +1,67 @@
+/* XMRig
+ * Copyright 2010      Jeff Garzik <jgarzik@pobox.com>
+ * Copyright 2012-2014 pooler      <pooler@litecoinpool.org>
+ * Copyright 2014      Lucas Jones <https://github.com/lucasjones>
+ * Copyright 2014-2016 Wolf9466    <https://github.com/OhGodAPet>
+ * Copyright 2016      Jay D Dee   <jayddee246@gmail.com>
+ * Copyright 2017-2018 XMR-Stak    <https://github.com/fireice-uk>, <https://github.com/psychocrypt>
+ * Copyright 2018-2019 SChernykh   <https://github.com/SChernykh>
+ * Copyright 2016-2019 XMRig       <https://github.com/xmrig>, <support@xmrig.com>
+ *
+ *   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 of the License, 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 <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef XMRIG_WATCHER_H
+#define XMRIG_WATCHER_H
+
+
+#include "base/tools/String.h"
+
+
+typedef struct uv_fs_event_s uv_fs_event_t;
+typedef struct uv_timer_s uv_timer_t;
+
+
+namespace xmrig {
+
+
+class IWatcherListener;
+
+
+class Watcher
+{
+public:
+    Watcher(const String &path, IWatcherListener *listener);
+    ~Watcher();
+
+private:
+    constexpr static int kDelay = 500;
+
+    static void onFsEvent(uv_fs_event_t *handle, const char *filename, int events, int status);
+    static void onTimer(uv_timer_t *handle);
+
+    void queueUpdate();
+    void reload();
+    void start();
+
+    IWatcherListener *m_listener;
+    String m_path;
+    uv_fs_event_t *m_fsEvent;
+    uv_timer_t *m_timer;
+};
+
+
+} /* namespace xmrig */
+
+#endif /* XMRIG_WATCHER_H */