libsysprof-analyze: add listmodel of processes

This is handy to be able to show a list of processes that were contained
within a particular capture file.

src/libsysprof-analyze/sysprof-document.c

@@ -43,6 +43,7 @@ struct _SysprofDocument
 
   GtkBitset                *file_chunks;
   GtkBitset                *traceables;
+  GtkBitset                *processes;
 
   GHashTable               *files_first_position;
 
@@ -117,6 +118,7 @@ sysprof_document_finalize (GObject *object)
   g_clear_pointer (&self->frames, g_array_unref);
   g_clear_pointer (&self->strings, g_hash_table_unref);
   g_clear_pointer (&self->traceables, gtk_bitset_unref);
+  g_clear_pointer (&self->processes, gtk_bitset_unref);
   g_clear_pointer (&self->file_chunks, gtk_bitset_unref);
   g_clear_pointer (&self->files_first_position, g_hash_table_unref);
 
@@ -142,6 +144,7 @@ sysprof_document_init (SysprofDocument *self)
                                          (GDestroyNotify)g_ref_string_release);
   self->traceables = gtk_bitset_new_empty ();
   self->file_chunks = gtk_bitset_new_empty ();
+  self->processes = gtk_bitset_new_empty ();
 
   self->files_first_position = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
 }
@@ -212,15 +215,19 @@ sysprof_document_load (SysprofDocument  *self,
       ptr.length = frame_len;
 
       tainted = (const SysprofCaptureFrame *)(gpointer)&self->base[pos];
+
       if (tainted->type == SYSPROF_CAPTURE_FRAME_SAMPLE ||
           tainted->type == SYSPROF_CAPTURE_FRAME_ALLOCATION)
         gtk_bitset_add (self->traceables, self->frames->len);
+      else if (tainted->type == SYSPROF_CAPTURE_FRAME_PROCESS)
+        gtk_bitset_add (self->processes, self->frames->len);
       else if (tainted->type == SYSPROF_CAPTURE_FRAME_FILE_CHUNK)
+        gtk_bitset_add (self->file_chunks, self->frames->len);
+
+      if (tainted->type == SYSPROF_CAPTURE_FRAME_FILE_CHUNK)
         {
           const SysprofCaptureFileChunk *file_chunk = (const SysprofCaptureFileChunk *)tainted;
 
-          gtk_bitset_add (self->file_chunks, self->frames->len);
-
           if (has_null_byte (file_chunk->path, (const char *)file_chunk->data) &&
               !g_hash_table_contains (self->files_first_position, file_chunk->path))
             g_hash_table_insert (self->files_first_position,
@@ -540,3 +547,20 @@ sysprof_document_list_traceables (SysprofDocument *self)
 
   return _sysprof_document_bitset_index_new (G_LIST_MODEL (self), self->traceables);
 }
+
+/**
+ * sysprof_document_list_processes:
+ * @self: a #SysprofDocument
+ *
+ * Gets a #GListModel containing #SysprofDocumentProcess found within
+ * the #SysprofDocument.
+ *
+ * Returns: (transfer full): a #GListModel
+ */
+GListModel *
+sysprof_document_list_processes (SysprofDocument *self)
+{
+  g_return_val_if_fail (SYSPROF_IS_DOCUMENT (self), NULL);
+
+  return _sysprof_document_bitset_index_new (G_LIST_MODEL (self), self->processes);
+}

src/libsysprof-analyze/sysprof-document.h

@@ -58,5 +58,7 @@ SYSPROF_AVAILABLE_IN_ALL
 GListModel             *sysprof_document_list_files         (SysprofDocument      *self);
 SYSPROF_AVAILABLE_IN_ALL
 GListModel             *sysprof_document_list_traceables    (SysprofDocument      *self);
+SYSPROF_AVAILABLE_IN_ALL
+GListModel             *sysprof_document_list_processes     (SysprofDocument      *self);
 
 G_END_DECLS

src/libsysprof-analyze/tests/meson.build

@@ -12,10 +12,11 @@ libsysprof_analyze_testsuite_c_args = [
 ]
 
 libsysprof_analyze_testsuite = {
-  'test-capture-model' : {'skip': true},
-  'test-list-files'    : {'skip': true},
-  'test-print-file'    : {'skip': true},
-  'test-symbolize'     : {'skip': true},
+  'test-capture-model'  : {'skip': true},
+  'test-list-files'     : {'skip': true},
+  'test-print-file'     : {'skip': true},
+  'test-list-processes' : {'skip': true},
+  'test-symbolize'      : {'skip': true},
 }
 
 libsysprof_analyze_testsuite_deps = [

src/libsysprof-analyze/tests/test-list-processes.c

@@ -0,0 +1,57 @@
+/* test-list-processes.c
+ *
+ * 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
+ */
+
+#include <sysprof-analyze.h>
+
+int
+main (int   argc,
+      char *argv[])
+{
+  g_autoptr(SysprofDocument) document = NULL;
+  g_autoptr(GListModel) processes = NULL;
+  g_autoptr(GError) error = NULL;
+  guint n_items;
+
+  if (argc < 2)
+    {
+      g_printerr ("usage: %s CAPTURE_FILE\n", argv[0]);
+      return 1;
+    }
+
+  if (!(document = sysprof_document_new (argv[1], &error)))
+    {
+      g_printerr ("Failed to open capture: %s\n", error->message);
+      return 1;
+    }
+
+  processes = sysprof_document_list_processes (document);
+  n_items = g_list_model_get_n_items (processes);
+
+  for (guint i = 0; i < n_items; i++)
+    {
+      g_autoptr(SysprofDocumentProcess) process = g_list_model_get_item (processes, i);
+
+      g_print ("%d: %s\n",
+               sysprof_document_frame_get_pid (SYSPROF_DOCUMENT_FRAME (process)),
+               sysprof_document_process_get_command_line (process));
+    }
+
+  return 0;
+}