source tree cleanup

The lib/ directory was getting a bit out of hand, so this tries
to organize things a bit so it is easier going forward to locate
the code people want to patch.

lib/util/sp-process-model-item.c

@@ -0,0 +1,234 @@
+/* sp-process-model-item.c
+ *
+ * Copyright (C) 2016 Christian Hergert <christian@hergert.me>
+ *
+ * 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/>.
+ */
+
+#include <string.h>
+
+#include "util/sp-process-model-item.h"
+#include "sources/sp-proc-source.h"
+
+struct _SpProcessModelItem
+{
+  GObject   parent_instance;
+  GPid      pid;
+  gchar    *command_line; /* Short version (first field) */
+  gchar   **argv;         /* Long version (argv as a strv) */
+  guint     is_kernel : 1;
+};
+
+G_DEFINE_TYPE (SpProcessModelItem, sp_process_model_item, G_TYPE_OBJECT)
+
+enum {
+  PROP_0,
+  PROP_COMMAND_LINE,
+  PROP_PID,
+  N_PROPS
+};
+
+static GParamSpec *properties [N_PROPS];
+
+static void
+sp_process_model_item_finalize (GObject *object)
+{
+  SpProcessModelItem *self = (SpProcessModelItem *)object;
+
+  g_clear_pointer (&self->command_line, g_free);
+  g_clear_pointer (&self->argv, g_strfreev);
+
+  G_OBJECT_CLASS (sp_process_model_item_parent_class)->finalize (object);
+}
+
+static void
+sp_process_model_item_get_property (GObject    *object,
+                                    guint       prop_id,
+                                    GValue     *value,
+                                    GParamSpec *pspec)
+{
+  SpProcessModelItem *self = SP_PROCESS_MODEL_ITEM (object);
+
+  switch (prop_id)
+    {
+    case PROP_COMMAND_LINE:
+      g_value_set_string (value, self->command_line);
+      break;
+
+    case PROP_PID:
+      g_value_set_int (value, self->pid);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+    }
+}
+
+static void
+sp_process_model_item_set_property (GObject      *object,
+                                    guint         prop_id,
+                                    const GValue *value,
+                                    GParamSpec   *pspec)
+{
+  SpProcessModelItem *self = SP_PROCESS_MODEL_ITEM (object);
+
+  switch (prop_id)
+    {
+    case PROP_COMMAND_LINE:
+      self->command_line = g_value_dup_string (value);
+      break;
+
+    case PROP_PID:
+      self->pid = g_value_get_int (value);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+    }
+}
+
+static void
+sp_process_model_item_class_init (SpProcessModelItemClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->finalize = sp_process_model_item_finalize;
+  object_class->get_property = sp_process_model_item_get_property;
+  object_class->set_property = sp_process_model_item_set_property;
+
+  properties [PROP_COMMAND_LINE] =
+    g_param_spec_string ("command-line",
+                         "Command Line",
+                         "Command Line",
+                         NULL,
+                         (G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS));
+
+  properties [PROP_PID] =
+    g_param_spec_int ("pid",
+                      "Pid",
+                      "Pid",
+                      -1,
+                      G_MAXINT,
+                      -1,
+                      (G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS));
+
+  g_object_class_install_properties (object_class, N_PROPS, properties);
+}
+
+static void
+sp_process_model_item_init (SpProcessModelItem *self)
+{
+}
+
+SpProcessModelItem *
+sp_process_model_item_new (GPid pid)
+{
+  SpProcessModelItem *ret;
+  gchar *cmdline;
+  gboolean is_kernel;
+
+  cmdline = sp_proc_source_get_command_line (pid, &is_kernel);
+
+  ret = g_object_new (SP_TYPE_PROCESS_MODEL_ITEM,
+                      "command-line", cmdline,
+                      "pid", (int)pid,
+                      NULL);
+  ret->is_kernel = is_kernel;
+
+  g_free (cmdline);
+
+  return ret;
+}
+
+guint
+sp_process_model_item_hash (SpProcessModelItem *self)
+{
+  g_return_val_if_fail (SP_IS_PROCESS_MODEL_ITEM (self), 0);
+
+  return self->pid;
+}
+
+gboolean
+sp_process_model_item_equal (SpProcessModelItem *self,
+                             SpProcessModelItem *other)
+{
+  g_assert (SP_IS_PROCESS_MODEL_ITEM (self));
+  g_assert (SP_IS_PROCESS_MODEL_ITEM (other));
+
+  return ((self->pid == other->pid) &&
+          (g_strcmp0 (self->command_line, other->command_line) == 0));
+}
+
+GPid
+sp_process_model_item_get_pid (SpProcessModelItem *self)
+{
+  g_return_val_if_fail (SP_IS_PROCESS_MODEL_ITEM (self), 0);
+
+  return self->pid;
+}
+
+const gchar *
+sp_process_model_item_get_command_line (SpProcessModelItem *self)
+{
+  g_return_val_if_fail (SP_IS_PROCESS_MODEL_ITEM (self), NULL);
+
+  return self->command_line;
+}
+
+gboolean
+sp_process_model_item_is_kernel (SpProcessModelItem *self)
+{
+  g_return_val_if_fail (SP_IS_PROCESS_MODEL_ITEM (self), FALSE);
+
+  return self->is_kernel;
+}
+
+const gchar * const *
+sp_process_model_item_get_argv (SpProcessModelItem *self)
+{
+  g_autofree gchar *contents = NULL;
+  g_autofree gchar *path = NULL;
+  const gchar *pos;
+  const gchar *endptr;
+  GPtrArray *ar;
+  gsize size = 0;
+  GPid pid;
+
+  g_return_val_if_fail (SP_IS_PROCESS_MODEL_ITEM (self), NULL);
+
+  if (self->argv)
+    return (const gchar * const *)self->argv;
+
+  if ((pid = sp_process_model_item_get_pid (self)) < 0)
+    return NULL;
+
+  path = g_strdup_printf ("/proc/%u/cmdline", (guint)pid);
+  if (!g_file_get_contents (path, &contents, &size, NULL))
+    return NULL;
+
+  ar = g_ptr_array_new ();
+
+  /* Each parameter is followed by \0 */
+  for (pos = contents, endptr = contents + size;
+       pos < endptr;
+       pos += strlen (pos) + 1)
+    g_ptr_array_add (ar, g_strdup (pos));
+  g_ptr_array_add (ar, NULL);
+
+  g_clear_pointer (&self->argv, g_strfreev);
+  self->argv = (gchar **)g_ptr_array_free (ar, FALSE);
+
+  return (const gchar * const *)self->argv;
+}
+