perf report: Add a simple GTK2-based 'perf report' browser

This patch adds a simple GTK2-based browser to 'perf report' that's
based on the TTY-based browser in builtin-report.c.

To launch "perf report" using the new GTK interface just type:

  $ perf report --gtk

The interface is somewhat limited in features at the moment:

  - No callgraph support

  - No KVM guest profiling support

  - No color coding for percentages

  - No sorting from the UI

  - ..and many, many more!

That said, I think this patch a reasonable start to build future features on.

Signed-off-by: Pekka Enberg <penberg@kernel.org>
Cc: Colin Walters <walters@verbum.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Ingo Molnar <mingo@kernel.org>
Link: http://lkml.kernel.org/r/alpine.LFD.2.02.1202231952410.6689@tux.localdomain
[ committer note: Added #pragma to make gtk no strict prototype problem go
  away as suggested by Colin Walters modulo avoiding push/pop ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

4 files changed, 226 insertions, 0 deletions

diff --git a/tools/perf/util/cache.h b/tools/perf/util/cache.h
index fc5e5a09d5b9..8dd224df3e54 100644
--- a/tools/perf/util/cache.h
+++ b/tools/perf/util/cache.h
@@ -45,6 +45,18 @@ void setup_browser(bool fallback_to_pager);
 void exit_browser(bool wait_for_ok);
 #endif
 
+#ifdef NO_GTK2_SUPPORT
+static inline void perf_gtk_setup_browser(int argc __used, const char *argv[] __used, bool fallback_to_pager)
+{
+        if (fallback_to_pager)
+                setup_pager();
+}
+static inline void perf_gtk_exit_browser(bool wait_for_ok __used) {}
+#else
+void perf_gtk_setup_browser(int argc, const char *argv[], bool fallback_to_pager);
+void perf_gtk_exit_browser(bool wait_for_ok);
+#endif
+
 char *alias_lookup(const char *alias);
 int split_cmdline(char *cmdline, const char ***argv);
 
diff --git a/tools/perf/util/gtk/browser.c b/tools/perf/util/gtk/browser.c
new file mode 100644
index 000000000000..258352a2356c
--- /dev/null
+++ b/tools/perf/util/gtk/browser.c
@@ -0,0 +1,189 @@
+#include "../evlist.h"
+#include "../cache.h"
+#include "../evsel.h"
+#include "../sort.h"
+#include "../hist.h"
+#include "gtk.h"
+
+#include <signal.h>
+
+#define MAX_COLUMNS                     32
+
+void perf_gtk_setup_browser(int argc, const char *argv[],
+                            bool fallback_to_pager __used)
+{
+        gtk_init(&argc, (char ***)&argv);
+}
+
+void perf_gtk_exit_browser(bool wait_for_ok __used)
+{
+        gtk_main_quit();
+}
+
+static void perf_gtk_signal(int sig)
+{
+        psignal(sig, "perf");
+        gtk_main_quit();
+}
+
+static void perf_gtk_resize_window(GtkWidget *window)
+{
+        GdkRectangle rect;
+        GdkScreen *screen;
+        int monitor;
+        int height;
+        int width;
+
+        screen = gtk_widget_get_screen(window);
+
+        monitor = gdk_screen_get_monitor_at_window(screen, window->window);
+
+        gdk_screen_get_monitor_geometry(screen, monitor, &rect);
+
+        width   = rect.width * 3 / 4;
+        height  = rect.height * 3 / 4;
+
+        gtk_window_resize(GTK_WINDOW(window), width, height);
+}
+
+static void perf_gtk_show_hists(GtkWidget *window, struct hists *hists)
+{
+        GType col_types[MAX_COLUMNS];
+        GtkCellRenderer *renderer;
+        struct sort_entry *se;
+        GtkListStore *store;
+        struct rb_node *nd;
+        u64 total_period;
+        GtkWidget *view;
+        int col_idx;
+        int nr_cols;
+
+        nr_cols = 0;
+
+        /* The percentage column */
+        col_types[nr_cols++] = G_TYPE_STRING;
+
+        list_for_each_entry(se, &hist_entry__sort_list, list) {
+                if (se->elide)
+                        continue;
+
+                col_types[nr_cols++] = G_TYPE_STRING;
+        }
+
+        store = gtk_list_store_newv(nr_cols, col_types);
+
+        view = gtk_tree_view_new();
+
+        renderer = gtk_cell_renderer_text_new();
+
+        col_idx = 0;
+
+        /* The percentage column */
+        gtk_tree_view_insert_column_with_attributes(GTK_TREE_VIEW(view),
+                                                    -1, "Overhead (%)",
+                                                    renderer, "text",
+                                                    col_idx++, NULL);
+
+        list_for_each_entry(se, &hist_entry__sort_list, list) {
+                if (se->elide)
+                        continue;
+
+                gtk_tree_view_insert_column_with_attributes(GTK_TREE_VIEW(view),
+                                                            -1, se->se_header,
+                                                            renderer, "text",
+                                                            col_idx++, NULL);
+        }
+
+        gtk_tree_view_set_model(GTK_TREE_VIEW(view), GTK_TREE_MODEL(store));
+
+        g_object_unref(GTK_TREE_MODEL(store));
+
+        total_period = hists->stats.total_period;
+
+        for (nd = rb_first(&hists->entries); nd; nd = rb_next(nd)) {
+                struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
+                GtkTreeIter iter;
+                double percent;
+                char s[512];
+
+                if (h->filtered)
+                        continue;
+
+                gtk_list_store_append(store, &iter);
+
+                col_idx = 0;
+
+                percent = (h->period * 100.0) / total_period;
+
+                snprintf(s, ARRAY_SIZE(s), "%.2f", percent);
+
+                gtk_list_store_set(store, &iter, col_idx++, s, -1);
+
+                list_for_each_entry(se, &hist_entry__sort_list, list) {
+                        if (se->elide)
+                                continue;
+
+                        se->se_snprintf(h, s, ARRAY_SIZE(s),
+                                        hists__col_len(hists, se->se_width_idx));
+
+                        gtk_list_store_set(store, &iter, col_idx++, s, -1);
+                }
+        }
+
+        gtk_container_add(GTK_CONTAINER(window), view);
+}
+
+int perf_evlist__gtk_browse_hists(struct perf_evlist *evlist,
+                                  const char *help __used,
+                                  void (*timer) (void *arg)__used,
+                                  void *arg __used, int delay_secs __used)
+{
+        struct perf_evsel *pos;
+        GtkWidget *notebook;
+        GtkWidget *window;
+
+        signal(SIGSEGV, perf_gtk_signal);
+        signal(SIGFPE,  perf_gtk_signal);
+        signal(SIGINT,  perf_gtk_signal);
+        signal(SIGQUIT, perf_gtk_signal);
+        signal(SIGTERM, perf_gtk_signal);
+
+        window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+
+        gtk_window_set_title(GTK_WINDOW(window), "perf report");
+
+        g_signal_connect(window, "delete_event", gtk_main_quit, NULL);
+
+        notebook = gtk_notebook_new();
+
+        list_for_each_entry(pos, &evlist->entries, node) {
+                struct hists *hists = &pos->hists;
+                const char *evname = event_name(pos);
+                GtkWidget *scrolled_window;
+                GtkWidget *tab_label;
+
+                scrolled_window = gtk_scrolled_window_new(NULL, NULL);
+
+                gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolled_window),
+                                                        GTK_POLICY_AUTOMATIC,
+                                                        GTK_POLICY_AUTOMATIC);
+
+                perf_gtk_show_hists(scrolled_window, hists);
+
+                tab_label = gtk_label_new(evname);
+
+                gtk_notebook_append_page(GTK_NOTEBOOK(notebook), scrolled_window, tab_label);
+        }
+
+        gtk_container_add(GTK_CONTAINER(window), notebook);
+
+        gtk_widget_show_all(window);
+
+        perf_gtk_resize_window(window);
+
+        gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
+
+        gtk_main();
+
+        return 0;
+}
diff --git a/tools/perf/util/gtk/gtk.h b/tools/perf/util/gtk/gtk.h
new file mode 100644
index 000000000000..75177ee04032
--- /dev/null
+++ b/tools/perf/util/gtk/gtk.h
@@ -0,0 +1,8 @@
+#ifndef _PERF_GTK_H_
+#define _PERF_GTK_H_ 1
+
+#pragma GCC diagnostic ignored "-Wstrict-prototypes"
+#include <gtk/gtk.h>
+#pragma GCC diagnostic error "-Wstrict-prototypes"
+
+#endif /* _PERF_GTK_H_ */
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index 10343c081e19..2cae9df40e04 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -147,6 +147,23 @@ int perf_evlist__tui_browse_hists(struct perf_evlist *evlist, const char *help,
                                   int refresh);
 #endif
 
+#ifdef NO_GTK2_SUPPORT
+static inline
+int perf_evlist__gtk_browse_hists(struct perf_evlist *evlist __used,
+                                  const char *help __used,
+                                  void(*timer)(void *arg) __used,
+                                  void *arg __used,
+                                  int refresh __used)
+{
+        return 0;
+}
+
+#else
+int perf_evlist__gtk_browse_hists(struct perf_evlist *evlist, const char *help,
+                                  void(*timer)(void *arg), void *arg,
+                                  int refresh);
+#endif
+
 unsigned int hists__sort_list_width(struct hists *self);
 
 #endif  /* __PERF_HIST_H */