diff include/WriteFile.h @ 153:3b7270949a97

Added WriteFile class to log data to disc in a low priority thread

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/include/WriteFile.h	Wed Oct 07 20:58:53 2015 +0100
@@ -0,0 +1,85 @@
+/*
+ * WriteMFile.h
+ *
+ *  Created on: 5 Oct 2015
+ *      Author: giulio
+ */
+
+#ifndef WRITEMFILE_H_
+#define WRITEMFILE_H_
+#include <BeagleRT.h>
+#include <vector>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+class WriteFile {
+private:
+	static AuxiliaryTask writeAllFilesTask;
+	bool echo;
+	char *header;
+	char *footer;
+	char *stringBuffer;
+	int stringBufferLength;
+	int bufferLength;
+	float* buffer;
+	int readPointer;
+	int writePointer;
+	bool variableOpen;
+	char* format;
+	int lineLength;
+	static int sleepTimeMs;
+	FILE *file;
+	void writeLine();
+	void writeHeader();
+	void writeFooter();
+	void allocateAndCopyString(const char* source, char** destination);
+	void print(const char* string);
+	void setLineLength(int newLineLength);
+	std::vector<char *> formatTokens;
+	static void sanitizeString(char* string);
+	static void sanitizeString(char* string, int numberOfArguments);
+    static bool isThreadRunning();
+	static bool auxiliaryTaskRunning;
+    static bool threadShouldExit();
+    static bool threadIsExiting;
+    static bool threadRunning;
+    static bool staticConstructed;
+	static void staticConstructor();
+	static std::vector<WriteFile *> objAddrs;
+public:
+	WriteFile();
+	void setEcho(bool newEcho);
+	void setFormat(const char* newFormat);
+	void setHeader(const char* newHeader);
+	void setFooter(const char* newFooter);
+	void log(float* array, int length);
+	void log(float value);
+	void init(const char* filename);
+
+	/**
+	 * Gets the distance between the write and read pointers of
+	 * the buffer that holds data to be written to disk.
+	 */
+	int getOffset();
+
+	/**
+	 * Inquiries the status of the buffer that holds data to be written to disk.
+	 *
+	 * @return a value between 0 and 1, with 0 being buffer full (writing to disk not fast enough)
+	 * and 1 being buffer empty (writing to disk is fast enough).
+	 */
+	float getBufferStatus();
+	void writeOutput();
+	~WriteFile();
+    static int getNumInstances();
+    static void writeAllHeaders();
+    static void writeAllFooters();
+    static void writeAllOutputs();
+    static void startThread();
+    static void stopThread();
+    static void run();
+};
+
+#endif /* WRITEMFILE_H_ */