Perform trace factor reduction as a separate step

[lttv.git] / lttv / lttv / sync / data_structures.h

diff --git a/lttv/lttv/sync/data_structures.h b/lttv/lttv/sync/data_structures.h
index 7ed3bfc1879ba7edd9f5941c2e8395d0d7537798..cc422a81261efe105861e68855bd980aca010aa7 100644 (file)
--- a/lttv/lttv/sync/data_structures.h
+++ b/lttv/lttv/sync/data_structures.h
@@ -124,12 +124,65 @@ typedef struct
        GQueue* events;
 } Broadcast;
 
-// One set of factors for each trace, this is the result of synchronization
+// Stage 4: These structures contain correction factors
+/* Correction factors for each trace, this is the final result of
+ * synchronization */
 typedef struct
 {
        double drift, offset;
 } Factors;
 
+// Correction factors between trace pairs, to be used for reduction
+typedef enum
+{
+       EXACT,
+       /* Used for identity factors (a0= 0, a1= 1) that map a trace to itself. In
+        * this case, min, max and accuracy are NULL.
+        */
+
+       ACCURATE,
+       /* The approximation is the middle of the min and max limits. All fields
+        * are initialized.
+        */
+
+       APPROXIMATE,
+       /* min and max are not available. The approximation is a "best effort".
+        * min and max are NULL.
+        */
+
+       INCOMPLETE,
+       /* min or max is available but not both. approx and accuracy are not
+        * NULL.
+        */
+
+       ABSENT,
+       /* The pair of trace did not have communications in both directions (maybe
+        * even no communication at all). approx and accuracy are NULL.
+        */
+
+       SCREWED,
+       /* The algorithms are screwed. All fields may be NULL.
+        */
+
+       APPROX_NB, // This must be the last member
+} ApproxType;
+
+extern const char* const approxNames[APPROX_NB];
+
+typedef struct
+{
+       Factors* min, * max, * approx;
+       ApproxType type;
+       double accuracy;
+} PairFactors;
+
+typedef struct
+{
+       unsigned int refCount;
+       unsigned int traceNb;
+       PairFactors** pairFactors;
+} AllFactors;
+
 
 // ConnectionKey-related functions
 guint ghfConnectionKeyHash(gconstpointer key);
@@ -179,4 +232,10 @@ void destroyTCPExchange(Exchange* const exchange);
 void gdnDestroyBroadcast(gpointer data);
 void destroyBroadcast(Broadcast* const broadcast);
 
+// Factor-related functions
+void destroyPairFactors(PairFactors* factorsCHull);
+
+AllFactors* createAllFactors(const unsigned int traceNb);
+void freeAllFactors(AllFactors* const allFactors);
+
 #endif