add multiplot example
Signed-off-by: Yordan Karadzhov <ykaradzhov@vmware.com>
diff --git a/kernel-shark-qt/examples/multiplot.cpp b/kernel-shark-qt/examples/multiplot.cpp
new file mode 100644
index 0000000..f166aa5
--- /dev/null
+++ b/kernel-shark-qt/examples/multiplot.cpp
@@ -0,0 +1,162 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/*
+ * Copyright (C) 2018 VMware Inc, Yordan Karadzhov <y.karadz@gmail.com>
+ */
+
+// C
+#include <stdint.h>
+
+// C++
+#include <vector>
+#include <iostream>
+
+// OpenGL
+#include <GL/freeglut.h>
+
+// KernelShark
+#include "libkshark.h"
+#include "KsPlotTools.hpp"
+
+#define GRAPH_HEIGHT 40 // width of the graph in pixels
+#define GRAPH_H_MARGIN 50 // size of the white space surrounding the graph
+#define WINDOW_WIDTH 1200 // width of the screen window in pixels
+#define WINDOW_HEIGHT 720 // height of the scrren window in pixels
+
+using namespace std;
+
+kshark_trace_histo histo_m;
+vector<KsPlot::Graph *> graphs;
+int *stream_ids;
+
+void calib(kshark_entry *e, int64_t *atgv) {
+ e->ts += atgv[0];
+}
+
+void plot()
+{
+ KsPlot::Color::setRainbowFrequency(.9);
+ KsPlot::ColorTable pidColors = KsPlot::getTaskColorTable();
+ vector<KsPlot::Graph *>::iterator it;
+ kshark_context *kshark_ctx(nullptr);
+ struct kshark_data_stream *stream;
+ KsPlot::Graph *graph;
+ int base, nCPUs, sd;
+
+ if (!kshark_instance(&kshark_ctx))
+ return;
+
+ for (int d = 0; d < kshark_ctx->n_streams; ++d) {
+ sd = stream_ids[d];
+ stream = kshark_get_data_stream(kshark_ctx, sd);
+ nCPUs = tep_get_cpus(stream->pevent);
+ for (int cpu = 0; cpu < nCPUs; ++cpu) {
+// graph = new KsPlot::Graph(&histos[d], &colors);
+ graph = new KsPlot::Graph(&histo_m, &pidColors,
+ &pidColors);
+
+ /* Set the dimensions of the Graph. */
+ graph->setHeight(GRAPH_HEIGHT);
+ graph->setHMargin(GRAPH_H_MARGIN);
+
+ /*
+ * Set the Y coordinate of the Graph's base.
+ * Remember that the "Y" coordinate is inverted.
+ */
+ base = 1.7 * GRAPH_HEIGHT * (graphs.size() + 1);
+ graph->setBase(base);
+
+ graph->fillCPUGraph(sd, cpu);
+
+ /* Add the Graph. */
+ graphs.push_back(graph);
+ }
+ }
+
+ /* Clear the screen. */
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ /* Draw all graphs. */
+ for (auto &g: graphs)
+ g->draw();
+
+ glFlush();
+}
+
+int main(int argc, char **argv)
+{
+ vector<kshark_entry **> data(argc - 1, nullptr);
+ kshark_entry ** data_m;
+ vector<size_t> nRows(argc - 1, 0);
+ kshark_context *kshark_ctx(nullptr);
+ int nBins;
+ size_t r, tot;
+ int64_t timeShift;
+
+ /* Create a new kshark session. */
+ if (!kshark_instance(&kshark_ctx))
+ return 1;
+
+ if (argc != 3)
+ return 1;
+
+ for (int i = 1; i < argc; ++i) {
+ if (kshark_open(kshark_ctx, argv[i]) < 0) {
+ cerr << "Unable to load file " << argv[i] << endl;
+ return 1;
+ }
+ }
+
+ stream_ids = kshark_all_streams(kshark_ctx);
+ for (int d = 0; d < kshark_ctx->n_streams; ++d) {
+ nRows[d] = kshark_load_data_entries(kshark_ctx,
+ stream_ids[d],
+ &data[d]);
+ }
+
+ timeShift = data[0][0]->ts - data[1][0]->ts;
+ tot = nRows[0] + nRows[1];
+ printf("%lu %lu t0 %lu\n", data[0][0]->ts, data[1][0]->ts, timeShift);
+ data_m = kshark_data_merge(data[0], nRows[0],
+ data[1], nRows[1],
+ calib, &timeShift);
+
+ for (size_t i = 1; i < tot; ++i) {
+ if (data_m[i]->ts < data_m[i-1]->ts)
+ break;
+ }
+
+ nBins = WINDOW_WIDTH - 2 * GRAPH_H_MARGIN;
+
+ ksmodel_init(&histo_m);
+ ksmodel_set_bining(&histo_m, nBins, data_m[0]->ts,
+ data_m[tot - 1]->ts);
+
+ /* Fill the model with data and calculate its state. */
+ ksmodel_fill(&histo_m, data_m, tot);
+
+ glutInit(&argc, argv);
+ ksplot_make_scene(WINDOW_WIDTH, WINDOW_HEIGHT);
+ ksplot_init_opengl(1);
+
+ /* Display graphs. */
+ glutDisplayFunc(plot);
+ glutMainLoop();
+
+ /* Free the memory. */
+ free(stream_ids);
+
+ for (size_t d = 0; d < data.size(); ++d) {
+ for (r = 0; r < nRows[d]; ++r)
+ free(data[d][r]);
+
+ free(data[d]);
+ }
+
+ free(data_m);
+
+ /* Close the session. */
+ kshark_free(kshark_ctx);
+
+ return 0;
+}
diff --git a/kernel-shark/examples/CMakeLists.txt b/kernel-shark/examples/CMakeLists.txt
index 0b18e54..1af98f6 100644
--- a/kernel-shark/examples/CMakeLists.txt
+++ b/kernel-shark/examples/CMakeLists.txt
@@ -27,3 +27,7 @@
message(STATUS "multiload")
add_executable(mload multiload.c)
target_link_libraries(mload kshark)
+
+message(STATUS "multiplot")
+add_executable(mplot multiplot.cpp)
+target_link_libraries(mplot kshark-plot)
diff --git a/kernel-shark/examples/multiplot.cpp b/kernel-shark/examples/multiplot.cpp
new file mode 100644
index 0000000..f166aa5
--- /dev/null
+++ b/kernel-shark/examples/multiplot.cpp
@@ -0,0 +1,162 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/*
+ * Copyright (C) 2018 VMware Inc, Yordan Karadzhov <y.karadz@gmail.com>
+ */
+
+// C
+#include <stdint.h>
+
+// C++
+#include <vector>
+#include <iostream>
+
+// OpenGL
+#include <GL/freeglut.h>
+
+// KernelShark
+#include "libkshark.h"
+#include "KsPlotTools.hpp"
+
+#define GRAPH_HEIGHT 40 // width of the graph in pixels
+#define GRAPH_H_MARGIN 50 // size of the white space surrounding the graph
+#define WINDOW_WIDTH 1200 // width of the screen window in pixels
+#define WINDOW_HEIGHT 720 // height of the scrren window in pixels
+
+using namespace std;
+
+kshark_trace_histo histo_m;
+vector<KsPlot::Graph *> graphs;
+int *stream_ids;
+
+void calib(kshark_entry *e, int64_t *atgv) {
+ e->ts += atgv[0];
+}
+
+void plot()
+{
+ KsPlot::Color::setRainbowFrequency(.9);
+ KsPlot::ColorTable pidColors = KsPlot::getTaskColorTable();
+ vector<KsPlot::Graph *>::iterator it;
+ kshark_context *kshark_ctx(nullptr);
+ struct kshark_data_stream *stream;
+ KsPlot::Graph *graph;
+ int base, nCPUs, sd;
+
+ if (!kshark_instance(&kshark_ctx))
+ return;
+
+ for (int d = 0; d < kshark_ctx->n_streams; ++d) {
+ sd = stream_ids[d];
+ stream = kshark_get_data_stream(kshark_ctx, sd);
+ nCPUs = tep_get_cpus(stream->pevent);
+ for (int cpu = 0; cpu < nCPUs; ++cpu) {
+// graph = new KsPlot::Graph(&histos[d], &colors);
+ graph = new KsPlot::Graph(&histo_m, &pidColors,
+ &pidColors);
+
+ /* Set the dimensions of the Graph. */
+ graph->setHeight(GRAPH_HEIGHT);
+ graph->setHMargin(GRAPH_H_MARGIN);
+
+ /*
+ * Set the Y coordinate of the Graph's base.
+ * Remember that the "Y" coordinate is inverted.
+ */
+ base = 1.7 * GRAPH_HEIGHT * (graphs.size() + 1);
+ graph->setBase(base);
+
+ graph->fillCPUGraph(sd, cpu);
+
+ /* Add the Graph. */
+ graphs.push_back(graph);
+ }
+ }
+
+ /* Clear the screen. */
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ /* Draw all graphs. */
+ for (auto &g: graphs)
+ g->draw();
+
+ glFlush();
+}
+
+int main(int argc, char **argv)
+{
+ vector<kshark_entry **> data(argc - 1, nullptr);
+ kshark_entry ** data_m;
+ vector<size_t> nRows(argc - 1, 0);
+ kshark_context *kshark_ctx(nullptr);
+ int nBins;
+ size_t r, tot;
+ int64_t timeShift;
+
+ /* Create a new kshark session. */
+ if (!kshark_instance(&kshark_ctx))
+ return 1;
+
+ if (argc != 3)
+ return 1;
+
+ for (int i = 1; i < argc; ++i) {
+ if (kshark_open(kshark_ctx, argv[i]) < 0) {
+ cerr << "Unable to load file " << argv[i] << endl;
+ return 1;
+ }
+ }
+
+ stream_ids = kshark_all_streams(kshark_ctx);
+ for (int d = 0; d < kshark_ctx->n_streams; ++d) {
+ nRows[d] = kshark_load_data_entries(kshark_ctx,
+ stream_ids[d],
+ &data[d]);
+ }
+
+ timeShift = data[0][0]->ts - data[1][0]->ts;
+ tot = nRows[0] + nRows[1];
+ printf("%lu %lu t0 %lu\n", data[0][0]->ts, data[1][0]->ts, timeShift);
+ data_m = kshark_data_merge(data[0], nRows[0],
+ data[1], nRows[1],
+ calib, &timeShift);
+
+ for (size_t i = 1; i < tot; ++i) {
+ if (data_m[i]->ts < data_m[i-1]->ts)
+ break;
+ }
+
+ nBins = WINDOW_WIDTH - 2 * GRAPH_H_MARGIN;
+
+ ksmodel_init(&histo_m);
+ ksmodel_set_bining(&histo_m, nBins, data_m[0]->ts,
+ data_m[tot - 1]->ts);
+
+ /* Fill the model with data and calculate its state. */
+ ksmodel_fill(&histo_m, data_m, tot);
+
+ glutInit(&argc, argv);
+ ksplot_make_scene(WINDOW_WIDTH, WINDOW_HEIGHT);
+ ksplot_init_opengl(1);
+
+ /* Display graphs. */
+ glutDisplayFunc(plot);
+ glutMainLoop();
+
+ /* Free the memory. */
+ free(stream_ids);
+
+ for (size_t d = 0; d < data.size(); ++d) {
+ for (r = 0; r < nRows[d]; ++r)
+ free(data[d][r]);
+
+ free(data[d]);
+ }
+
+ free(data_m);
+
+ /* Close the session. */
+ kshark_free(kshark_ctx);
+
+ return 0;
+}
