class Connection, Network, Port: select() replaced by ppoll().

src/lib/ebus/port.cpp

@@ -24,6 +24,7 @@
 #include <sys/ioctl.h>
 #include <arpa/inet.h>
 #include <netdb.h>
+#include <poll.h>
 
 
 namespace libebus
@@ -68,18 +69,23 @@ ssize_t Device::recvBytes(const long timeout, size_t maxCount)
 		return -1; // TODO RESULT_ERR_DEVICE
 
 	if (timeout > 0) {
-		fd_set readfds;
-		struct timeval tdiff;
+		int ret, nfds = 1;
+		struct pollfd fds[nfds];
+		struct timespec tdiff;
 
 		// set select timeout
 		tdiff.tv_sec = 0;
-		tdiff.tv_usec = timeout;
+		tdiff.tv_nsec = timeout*1000;
 
-		FD_ZERO(&readfds);
-		FD_SET(m_fd, &readfds);
+		memset(fds, 0, sizeof(fds));
 
-		if (select(m_fd + 1, &readfds, NULL, NULL, &tdiff) != 1)
-			return -2; // TODO RESULT_ERR_TIMEOUT
+		fds[0].fd = m_fd;
+		fds[0].events = POLLIN;
+
+		ret = ppoll(fds, nfds, &tdiff, NULL);
+
+		if (ret == -1) return -1; // TODO RESULT_ERR_DEVICE
+		if (ret == 0) return -2; // TODO RESULT_ERR_TIMEOUT
 	}
 
 	if (maxCount > sizeof(m_buffer))

src/lib/ebus/port.h

@@ -83,7 +83,7 @@ public:
 
 	/**
 	 * @brief recvBytes read bytes from opened file descriptor.
-	 * @param timeout max time out for new input data.
+	 * @param timeoutmax time for new input data [usec].
 	 * @param maxCount max size of receive buffer.
 	 * @return number of read bytes or -1 if an error has occured.
 	 */