1 files changed, 117 insertions, 0 deletions
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
new file mode 100644
index 00000000..3beb97c4
--- /dev/null
+++ b/tools/perf/util/hist.h
@@ -0,0 +1,117 @@
+#ifndef __PERF_HIST_H
+#define __PERF_HIST_H
+
+#include <linux/types.h>
+#include "callchain.h"
+
+extern struct callchain_param callchain_param;
+
+struct hist_entry;
+struct addr_location;
+struct symbol;
+
+/*
+ * The kernel collects the number of events it couldn't send in a stretch and
+ * when possible sends this number in a PERF_RECORD_LOST event. The number of
+ * such "chunks" of lost events is stored in .nr_events[PERF_EVENT_LOST] while
+ * total_lost tells exactly how many events the kernel in fact lost, i.e. it is
+ * the sum of all struct lost_event.lost fields reported.
+ *
+ * The total_period is needed because by default auto-freq is used, so
+ * multipling nr_events[PERF_EVENT_SAMPLE] by a frequency isn't possible to get
+ * the total number of low level events, it is necessary to to sum all struct
+ * sample_event.period and stash the result in total_period.
+ */
+struct events_stats {
+	u64 total_period;
+	u64 total_lost;
+	u64 total_invalid_chains;
+	u32 nr_events[PERF_RECORD_HEADER_MAX];
+	u32 nr_unknown_events;
+	u32 nr_invalid_chains;
+	u32 nr_unknown_id;
+};
+
+enum hist_column {
+	HISTC_SYMBOL,
+	HISTC_DSO,
+	HISTC_THREAD,
+	HISTC_COMM,
+	HISTC_PARENT,
+	HISTC_CPU,
+	HISTC_NR_COLS, /* Last entry */
+};
+
+struct hists {
+	struct rb_root		entries;
+	u64			nr_entries;
+	struct events_stats	stats;
+	u64			event_stream;
+	u16			col_len[HISTC_NR_COLS];
+	/* Best would be to reuse the session callchain cursor */
+	struct callchain_cursor	callchain_cursor;
+};
+
+struct hist_entry *__hists__add_entry(struct hists *self,
+				      struct addr_location *al,
+				      struct symbol *parent, u64 period);
+extern int64_t hist_entry__cmp(struct hist_entry *, struct hist_entry *);
+extern int64_t hist_entry__collapse(struct hist_entry *, struct hist_entry *);
+int hist_entry__fprintf(struct hist_entry *self, struct hists *hists,
+			struct hists *pair_hists, bool show_displacement,
+			long displacement, FILE *fp, u64 total);
+int hist_entry__snprintf(struct hist_entry *self, char *bf, size_t size,
+			 struct hists *hists, struct hists *pair_hists,
+			 bool show_displacement, long displacement,
+			 bool color, u64 total);
+void hist_entry__free(struct hist_entry *);
+
+void hists__output_resort(struct hists *self);
+void hists__collapse_resort(struct hists *self);
+
+void hists__inc_nr_events(struct hists *self, u32 type);
+size_t hists__fprintf_nr_events(struct hists *self, FILE *fp);
+
+size_t hists__fprintf(struct hists *self, struct hists *pair,
+		      bool show_displacement, FILE *fp);
+
+int hist_entry__inc_addr_samples(struct hist_entry *self, int evidx, u64 addr);
+int hist_entry__annotate(struct hist_entry *self, size_t privsize);
+
+void hists__filter_by_dso(struct hists *self, const struct dso *dso);
+void hists__filter_by_thread(struct hists *self, const struct thread *thread);
+
+u16 hists__col_len(struct hists *self, enum hist_column col);
+void hists__set_col_len(struct hists *self, enum hist_column col, u16 len);
+bool hists__new_col_len(struct hists *self, enum hist_column col, u16 len);
+
+struct perf_evlist;
+
+#ifdef NO_NEWT_SUPPORT
+static inline
+int perf_evlist__tui_browse_hists(struct perf_evlist *evlist __used,
+				  const char *help __used)
+{
+	return 0;
+}
+
+static inline int hist_entry__tui_annotate(struct hist_entry *self __used,
+					   int evidx __used)
+{
+	return 0;
+}
+#define KEY_LEFT -1
+#define KEY_RIGHT -2
+#else
+#include <newt.h>
+int hist_entry__tui_annotate(struct hist_entry *self, int evidx);
+
+#define KEY_LEFT NEWT_KEY_LEFT
+#define KEY_RIGHT NEWT_KEY_RIGHT
+
+int perf_evlist__tui_browse_hists(struct perf_evlist *evlist, const char *help);
+#endif
+
+unsigned int hists__sort_list_width(struct hists *self);
+
+#endif	/* __PERF_HIST_H */