Add convex hull algorithm-based synchronization

[lttv.git] / lttv / lttv / sync / event_analysis_linreg.c

diff --git a/lttv/lttv/sync/event_analysis_linreg.c b/lttv/lttv/sync/event_analysis_linreg.c
index 8a7bd22777b977708e8065797e9f480fcd62c7c9..41a32aeb892e89f46fb659c0b7f13d5faeb946ac 100644 (file)
--- a/lttv/lttv/sync/event_analysis_linreg.c
+++ b/lttv/lttv/sync/event_analysis_linreg.c
@@ -44,9 +44,11 @@ static void destroyAnalysisLinReg(SyncState* const syncState);
 static void analyzeExchangeLinReg(SyncState* const syncState, Packet* const packet);
 static GArray* finalizeAnalysisLinReg(SyncState* const syncState);
 static void printAnalysisStatsLinReg(SyncState* const syncState);
+static void writeAnalysisGraphsPlotsLinReg(FILE* stream, SyncState* const
+       syncState, const unsigned int i, const unsigned int j);
 
 // Functions specific to this module
-static void registerAnalysisLinReg() __attribute__((constructor (101)));
+static void registerAnalysisLinReg() __attribute__((constructor (102)));
 
 static void finalizeLSA(SyncState* const syncState);
 static void doGraphProcessing(SyncState* const syncState);
@@ -73,6 +75,8 @@ static AnalysisModule analysisModuleLinReg= {
        .analyzeExchange= &analyzeExchangeLinReg,
        .finalizeAnalysis= &finalizeAnalysisLinReg,
        .printAnalysisStats= &printAnalysisStatsLinReg,
+       .writeAnalysisGraphsPlots= &writeAnalysisGraphsPlotsLinReg,
+       .writeAnalysisGraphsOptions= NULL,
 };
 
 
@@ -483,6 +487,7 @@ static GArray* calculateFactors(SyncState* const syncState)
        analysisData= (AnalysisDataLinReg*) syncState->analysisData;
        factors= g_array_sized_new(FALSE, FALSE, sizeof(Factors),
                syncState->traceNb);
+       g_array_set_size(factors, syncState->traceNb);
 
        // Calculate the resulting offset and drift between each trace and its
        // reference
@@ -743,3 +748,28 @@ static gint gcfGraphTraceCompare(gconstpointer a, gconstpointer b)
        }
 }
 
+
+/*
+ * Write the analysis-specific graph lines in the gnuplot script.
+ *
+ * Args:
+ *   stream:       stream where to write the data
+ *   syncState:    container for synchronization data
+ *   i:            first trace number, on the x axis
+ *   j:            second trace number, garanteed to be larger than i
+ */
+void writeAnalysisGraphsPlotsLinReg(FILE* stream, SyncState* const syncState,
+       const unsigned int i, const unsigned int j)
+{
+       AnalysisDataLinReg* analysisData;
+       Fit* fit;
+
+       analysisData= (AnalysisDataLinReg*) syncState->analysisData;
+       fit= &analysisData->fitArray[j][i];
+
+       fprintf(stream,
+               "\t%7g + %7g * x "
+               "title \"Linreg conversion\" with lines "
+               "linecolor rgb \"gray60\" linetype 1, \\\n",
+               fit->d0, 1. + fit->x);
+}