From 3b4a308ff647def75e647ac8f97e1e48b57672c3 Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Tue, 24 Jul 2007 19:26:47 +0000
Subject: Consistently rename all C++ files .cpp/.hpp. Fix (some) inclusion
 guard names to not clash with other libs.

git-svn-id: http://svn.drobilla.net/lad/raul@613 a436a847-0d15-0410-975c-d299462d15a1
---
 raul/Process.hpp | 92 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 raul/Process.hpp

(limited to 'raul/Process.hpp')

diff --git a/raul/Process.hpp b/raul/Process.hpp
new file mode 100644
index 0000000..80063a1
--- /dev/null
+++ b/raul/Process.hpp
@@ -0,0 +1,92 @@
+/* This file is part of Raul.
+ * Copyright (C) 2007 Dave Robillard <http://drobilla.net>
+ * 
+ * Raul 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 2 of the License, or (at your option) any later
+ * version.
+ * 
+ * Raul 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 details.
+ * 
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef RAUL_PROCESS_HPP
+#define RAUL_PROCESS_HPP
+
+#include <string>
+#include <iostream>
+#include <unistd.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <boost/utility.hpp>
+
+namespace Raul {
+
+
+/** A child process.
+ *
+ * \ingroup raul
+ */
+class Process : boost::noncopyable
+{
+public:
+
+	/** Launch a sub process.
+	 *
+	 * @param command can be a typical shell command with parameters, the PATH is searched etc.
+	 */
+	static bool launch(std::string command)
+	{
+		const std::string executable = (command.find(" ") != std::string::npos)
+			? command.substr(0, command.find(" "))
+			: command;
+
+		std::cerr << "Launching child process '" << executable << "' with command line '"
+			<< command << "'" << std::endl;
+
+		// Use the same double fork() trick as JACK to prevent zombie children
+		const int err = fork();
+
+		if (err == 0) {
+			// (child)
+
+			// close all nonstandard file descriptors
+			struct rlimit max_fds;
+			getrlimit(RLIMIT_NOFILE, &max_fds);
+
+			for (rlim_t fd = 3; fd < max_fds.rlim_cur; ++fd)
+				close(fd);
+
+			switch (fork()) {
+				case 0:
+					// (grandchild)
+					setsid();
+					execlp(executable.c_str(), command.c_str(), NULL);
+					_exit(-1);
+
+				case -1:
+					// (second) fork failed, there is no grandchild
+					_exit (-1);
+
+					/* exit the child process here */
+				default: 
+					_exit (0);
+			}
+		}
+
+		return (err > 0);
+	}
+
+private:
+	Process() {}
+};
+
+
+} // namespace Raul
+
+#endif // RAUL_PROCESS_HPP
-- 
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