input/curl: move class CurlGlobal to separate source file

src/lib/curl/Global.hxx

@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2008-2016 Max Kellermann <max@duempel.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
+ * FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef CURL_GLOBAL_HXX
+#define CURL_GLOBAL_HXX
+
+#include "Multi.hxx"
+#include "event/TimeoutMonitor.hxx"
+
+class CurlSocket;
+class CurlRequest;
+
+/**
+ * Manager for the global CURLM object.
+ */
+class CurlGlobal final : private TimeoutMonitor {
+	CurlMulti multi;
+
+public:
+	explicit CurlGlobal(EventLoop &_loop);
+
+	void Add(CURL *easy, CurlRequest &request);
+	void Remove(CURL *easy);
+
+	/**
+	 * Check for finished HTTP responses.
+	 *
+	 * Runs in the I/O thread.  The caller must not hold locks.
+	 */
+	void ReadInfo();
+
+	void Assign(curl_socket_t fd, CurlSocket &cs) {
+		curl_multi_assign(multi.Get(), fd, &cs);
+	}
+
+	void SocketAction(curl_socket_t fd, int ev_bitmask);
+
+	void InvalidateSockets() {
+		SocketAction(CURL_SOCKET_TIMEOUT, 0);
+	}
+
+	/**
+	 * This is a kludge to allow pausing/resuming a stream with
+	 * libcurl < 7.32.0.  Read the curl_easy_pause manpage for
+	 * more information.
+	 */
+	void ResumeSockets() {
+		int running_handles;
+		curl_multi_socket_all(multi.Get(), &running_handles);
+	}
+
+private:
+	static int TimerFunction(CURLM *global, long timeout_ms, void *userp);
+
+	virtual void OnTimeout() override;
+};
+
+#endif