1 files changed, 76 insertions, 0 deletions
diff --git a/includes/RtsMessages.h b/includes/RtsMessages.h
new file mode 100644
index 0000000000..3f0da3d7ed
--- /dev/null
+++ b/includes/RtsMessages.h
@@ -0,0 +1,76 @@
+/* -----------------------------------------------------------------------------
+ *
+ * (c) The GHC Team, 1998-2004
+ *
+ * Message API for use inside the RTS.  All messages generated by the
+ * RTS should go through one of the functions declared here, and we
+ * also provide hooks so that messages from the RTS can be redirected
+ * as appropriate.
+ *
+ * ---------------------------------------------------------------------------*/
+
+#ifndef RTSMESSAGES_H
+#define RTSMESSAGES_H
+
+#include <stdarg.h>
+
+/* -----------------------------------------------------------------------------
+ * Message generation
+ * -------------------------------------------------------------------------- */
+
+/*
+ * A fatal internal error: this is for errors that probably indicate
+ * bugs in the RTS or compiler.  We normally output bug reporting
+ * instructions along with the error message.
+ *
+ * barf() invokes (*fatalInternalErrorFn)().  This function is not
+ * expected to return.
+ */
+extern void barf(char *s, ...)
+   GNUC3_ATTRIBUTE(__noreturn__);
+
+extern void vbarf(char *s, va_list ap)
+   GNUC3_ATTRIBUTE(__noreturn__);
+
+extern void _assertFail(char *filename, unsigned int linenum)
+   GNUC3_ATTRIBUTE(__noreturn__);
+
+/*
+ * An error condition which is caused by and/or can be corrected by
+ * the user.
+ *
+ * errorBelch() invokes (*errorMsgFn)().
+ */
+extern void errorBelch(char *s, ...)
+   GNUC3_ATTRIBUTE(format (printf, 1, 2));
+
+extern void verrorBelch(char *s, va_list ap);
+
+/*
+ * A debugging message.  Debugging messages are generated either as a
+ * virtue of having DEBUG turned on, or by being explicitly selected
+ * via RTS options (eg. +RTS -Ds).
+ *
+ * debugBelch() invokes (*debugMsgFn)().
+ */
+extern void debugBelch(char *s, ...)
+   GNUC3_ATTRIBUTE(format (printf, 1, 2));
+
+extern void vdebugBelch(char *s, va_list ap);
+
+
+/* Hooks for redirecting message generation: */
+
+typedef void RtsMsgFunction(char *, va_list);
+
+extern RtsMsgFunction *fatalInternalErrorFn;
+extern RtsMsgFunction *debugMsgFn;
+extern RtsMsgFunction *errorMsgFn;
+
+/* Default stdio implementation of the message hooks: */
+
+extern RtsMsgFunction rtsFatalInternalErrorFn;
+extern RtsMsgFunction rtsDebugMsgFn;
+extern RtsMsgFunction rtsErrorMsgFn;
+
+#endif /* RTSMESSAGES_H */