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pull-local: Fix race condition pointed out by Benjamin

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We could drop into g_main_loop_run() after the worker
thread had called g_main_loop_quit().

Fix this by following the pattern suggested by Ryan of a while loop
around our termination condition, and g_main_context_iteration().
This commit is contained in:
Colin Walters 2013-06-08 14:15:43 -04:00
parent 3e1e26352f
commit c57e63a515
1 changed files with 11 additions and 5 deletions
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16
src/ostree/ot-builtin-pull-local.c
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@ -43,6 +43,12 @@ typedef struct {
GSConsole *console;
} OtLocalCloneData;
static gboolean
termination_condition (OtLocalCloneData *self)
{
return g_atomic_int_get (&self->n_objects_checked) == self->n_objects_to_check;
}
static gboolean
import_one_object (OtLocalCloneData *data,
const char *checksum,
@ -123,8 +129,9 @@ import_one_object_thread (gpointer object,
}
out:
if (g_atomic_int_add (&data->n_objects_checked, 1) == data->n_objects_to_check - 1)
g_main_loop_quit (data->loop);
g_atomic_int_add (&data->n_objects_checked, 1);
if (termination_condition (data))
g_main_context_wakeup (NULL);
if (local_error != NULL)
{
g_printerr ("%s\n", local_error->message);
@ -203,7 +210,6 @@ ostree_builtin_pull_local (int argc, char **argv, GFile *repo_path, GError **err
goto out;
data->threadpool = ot_thread_pool_new_nproc (import_one_object_thread, data);
data->loop = g_main_loop_new (NULL, TRUE);
src_repo_dir = g_object_ref (ostree_repo_get_path (data->src_repo));
dest_repo_dir = g_object_ref (ostree_repo_get_path (data->dest_repo));
@ -286,7 +292,8 @@ ostree_builtin_pull_local (int argc, char **argv, GFile *repo_path, GError **err
g_timeout_add_seconds (1, idle_print_status, data);
idle_print_status (data);
g_main_loop_run (data->loop);
while (!termination_condition (data))
g_main_context_iteration (NULL, TRUE);
idle_print_status (data);
if (data->console)
@ -311,7 +318,6 @@ ostree_builtin_pull_local (int argc, char **argv, GFile *repo_path, GError **err
ret = TRUE;
out:
g_clear_pointer (&data->threadpool, (GDestroyNotify) g_thread_pool_free);
g_clear_pointer (&data->loop, (GDestroyNotify) g_main_loop_unref);
if (data->src_repo)
g_object_unref (data->src_repo);
if (data->dest_repo)