X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Ftask.h;h=0732453bfd460b0f0fe8ae881899c6d33581d89a;hb=ac1f35e436dbe86f903dce2f49b002ff17f1ca50;hp=9cf2bac9081b7b2c8df1627342aa1dd14600d8ff;hpb=afeb81fb97b8ee4e50a3679707deb17e5b79a74f;p=builder.git

diff --git a/source/task.h b/source/task.h
index 9cf2bac..0732453 100644
--- a/source/task.h
+++ b/source/task.h
@@ -3,10 +3,12 @@
 
 #include <string>
 #include <sigc++/signal.h>
+#include <msp/fs/path.h>
 
 /**
 Tasks are used to manage other programs and worker threads involved in the
-build process.  They are run asynchronously.
+build process.  They are run asynchronously by default, but a wait() method is
+provided should it be necessary to wait for a task to finish.
 */
 class Task
 {
@@ -20,14 +22,38 @@ public:
 
 	sigc::signal<void, bool> signal_finished;
 
+	Msp::FS::Path file;
+	bool unlink;
+
 protected:
-	Task() { }
+	Task();
 public:
 	virtual ~Task() { }
 
+	/** Associate the task with a file. */
+	void set_file(const Msp::FS::Path &);
+
+	/** If set to true, the associated file is removed before the task is
+	started. */
+	void set_unlink(bool = true);
+
+	/** Returns the command being executed for this task.  Only makes sense if
+	an external command is involved. */
 	virtual std::string get_command() const = 0;
+
+	/// Starts the task.
 	virtual void start() = 0;
+
+protected:
+	/** Ensures that the output directory exists and removes the file if
+	necessary. */
+	void prepare();
+
+public:
+	/// Checks the status of the task and immediately returns.
 	virtual Status check() = 0;
+
+	/// Waits for the task to finish and returns its final status.
 	virtual Status wait() = 0;
 };