libsysprof: join libsysprof-analyze and libsysprof-profile

This brings together the two libraries back into one now that the whole
design is pretty well sorted out. They depend on roughly the same libraries
anyway and it's way easier of the single library can both read and write
the capture files (along with bringing in libsysprof-capture symbols in
a single place).

src/libsysprof/sysprof-time-span.h

@@ -0,0 +1,146 @@
+/* sysprof-time-span.h
+ *
+ * Copyright 2023 Christian Hergert <chergert@redhat.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#pragma once
+
+#include <glib-object.h>
+
+#include <sysprof-capture.h>
+
+G_BEGIN_DECLS
+
+#define SYSPROF_TYPE_TIME_SPAN (sysprof_time_span_get_type())
+
+typedef struct _SysprofTimeSpan
+{
+  gint64 begin_nsec;
+  gint64 end_nsec;
+} SysprofTimeSpan;
+
+SYSPROF_AVAILABLE_IN_ALL
+GType            sysprof_time_span_get_type (void) G_GNUC_CONST;
+SYSPROF_AVAILABLE_IN_ALL
+SysprofTimeSpan *sysprof_time_span_copy     (const SysprofTimeSpan *self);
+SYSPROF_AVAILABLE_IN_ALL
+void             sysprof_time_span_free     (SysprofTimeSpan       *self);
+
+static inline gint64
+sysprof_time_span_duration (SysprofTimeSpan time_span)
+{
+  return time_span.end_nsec - time_span.begin_nsec;
+}
+
+static inline SysprofTimeSpan
+sysprof_time_span_relative_to (SysprofTimeSpan time_span,
+                               gint64          point)
+{
+  return (SysprofTimeSpan) {
+    time_span.begin_nsec - point,
+    time_span.end_nsec - point
+  };
+}
+
+static inline void
+sysprof_time_span_normalize (SysprofTimeSpan        time_span,
+                             SysprofTimeSpan        allowed,
+                             float                  values[restrict 2])
+{
+  double duration = allowed.end_nsec - allowed.begin_nsec;
+
+  time_span = sysprof_time_span_relative_to (time_span, allowed.begin_nsec);
+
+  values[0] = time_span.begin_nsec / duration;
+  values[1] = time_span.end_nsec / duration;
+}
+
+static inline SysprofTimeSpan
+sysprof_time_span_order (SysprofTimeSpan time_span)
+{
+  if (time_span.begin_nsec > time_span.end_nsec)
+    return (SysprofTimeSpan) { time_span.end_nsec, time_span.begin_nsec };
+
+  return time_span;
+}
+
+static inline gboolean
+sysprof_time_span_clamp (SysprofTimeSpan *time_span,
+                         SysprofTimeSpan  allowed)
+{
+  if (time_span->end_nsec <= allowed.begin_nsec ||
+      time_span->begin_nsec >= allowed.end_nsec)
+    {
+      time_span->begin_nsec = time_span->end_nsec = 0;
+      return FALSE;
+    }
+
+  if (time_span->begin_nsec < allowed.begin_nsec)
+    time_span->begin_nsec = allowed.begin_nsec;
+
+  if (time_span->end_nsec > allowed.end_nsec)
+    time_span->end_nsec = allowed.end_nsec;
+
+  return TRUE;
+}
+
+static inline char *
+sysprof_time_offset_to_string (gint64 o)
+{
+  char str[32];
+
+  if (o == 0)
+    g_snprintf (str, sizeof str, "%.3lfs", .0);
+  else if (o < 1000000)
+    g_snprintf (str, sizeof str, "%.3lfμs", o/1000.);
+  else if (o < SYSPROF_NSEC_PER_SEC)
+    g_snprintf (str, sizeof str, "%.3lfms", o/1000000.);
+  else
+    g_snprintf (str, sizeof str, "%.3lfs", o/(double)SYSPROF_NSEC_PER_SEC);
+
+  return g_strdup (str);
+}
+
+static inline char *
+sysprof_time_span_to_string (const SysprofTimeSpan *span)
+{
+  g_autofree char *begin = sysprof_time_offset_to_string (span->begin_nsec);
+  g_autofree char *end = NULL;
+
+  if (span->end_nsec == span->begin_nsec)
+    return g_steal_pointer (&begin);
+
+  end = sysprof_time_offset_to_string (span->end_nsec - span->begin_nsec);
+
+  return g_strdup_printf ("%s (%s)", begin, end);
+}
+
+static inline gboolean
+sysprof_time_span_equal (const SysprofTimeSpan *a,
+                         const SysprofTimeSpan *b)
+{
+  if (a == b)
+    return TRUE;
+
+  if (a == NULL || b == NULL)
+    return FALSE;
+
+  return memcmp (a, b, sizeof *a) == 0;
+}
+
+G_END_DECLS