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example: Cancel enroll operation on Ctrl+C

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This makes it easier to do basic testing of cancellation paths in the
drivers.
This commit is contained in:
Benjamin Berg 2020-04-20 17:45:36 +02:00 committed by Marco Trevisan
parent bc3f622b2a
commit a651b65401
1 changed files with 29 additions and 6 deletions
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35
examples/enroll.c
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@ -23,20 +23,25 @@
#include <stdio.h>
#include <libfprint/fprint.h>
#include <glib-unix.h>
#include "storage.h"
#include "utilities.h"
typedef struct _EnrollData
{
GMainLoop *loop;
FpFinger finger;
int ret_value;
GMainLoop *loop;
GCancellable *cancellable;
unsigned int sigint_handler;
FpFinger finger;
int ret_value;
} EnrollData;
static void
enroll_data_free (EnrollData *enroll_data)
{
g_clear_handle_id (&enroll_data->sigint_handler, g_source_remove);
g_clear_object (&enroll_data->cancellable);
g_main_loop_unref (enroll_data->loop);
g_free (enroll_data);
}
@ -137,11 +142,22 @@ on_device_opened (FpDevice *dev, GAsyncResult *res, void *user_data)
printf ("Scan your finger now.\n");
print_template = print_create_template (dev, enroll_data->finger);
fp_device_enroll (dev, print_template, NULL, on_enroll_progress, NULL,
NULL, (GAsyncReadyCallback) on_enroll_completed,
fp_device_enroll (dev, print_template, enroll_data->cancellable,
on_enroll_progress, NULL, NULL,
(GAsyncReadyCallback) on_enroll_completed,
enroll_data);
}
static gboolean
sigint_cb (void *user_data)
{
EnrollData *enroll_data = user_data;
g_cancellable_cancel (enroll_data->cancellable);
return G_SOURCE_CONTINUE;
}
int
main (void)
{
@ -188,8 +204,15 @@ main (void)
enroll_data->finger = finger;
enroll_data->ret_value = EXIT_FAILURE;
enroll_data->loop = g_main_loop_new (NULL, FALSE);
enroll_data->cancellable = g_cancellable_new ();
enroll_data->sigint_handler = g_unix_signal_add_full (G_PRIORITY_HIGH,
SIGINT,
sigint_cb,
enroll_data,
NULL);
fp_device_open (dev, NULL, (GAsyncReadyCallback) on_device_opened,
fp_device_open (dev, enroll_data->cancellable,
(GAsyncReadyCallback) on_device_opened,
enroll_data);
g_main_loop_run (enroll_data->loop);