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lib: Add a way to name timeouts

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To make it easier to print debug information about where timeouts are
coming from.
This commit is contained in:
Bastien Nocera 2018-09-27 14:29:18 +02:00
parent 2954583373
commit d18e10535e
2 changed files with 56 additions and 4 deletions
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58
libfprint/fpi-poll.c
View file

@ -86,6 +86,7 @@ struct fpi_timeout {
fpi_timeout_fn callback;
struct fp_dev *dev;
void *data;
char *name;
};
static int timeout_sort_fn(gconstpointer _a, gconstpointer _b)
@ -103,6 +104,35 @@ static int timeout_sort_fn(gconstpointer _a, gconstpointer _b)
return 0;
}
static void
fpi_timeout_free(fpi_timeout *timeout)
{
if (timeout == NULL)
return;
g_free(timeout->name);
g_free(timeout);
}
/**
* fpi_timeout_set_name:
* @timeout: a #fpi_timeout
* @name: the name to give the timeout
*
* Sets a name for a timeout, allowing that name to be printed
* along with any timeout related debug.
*/
void
fpi_timeout_set_name(fpi_timeout *timeout,
const char *name)
{
g_return_if_fail (timeout != NULL);
g_return_if_fail (name != NULL);
g_return_if_fail (timeout->name == NULL);
timeout->name = g_strdup(name);
}
/**
* fpi_timeout_add:
* @msec: the time before calling the function, in milliseconds (1/1000ths of a second)
@ -140,7 +170,7 @@ fpi_timeout *fpi_timeout_add(unsigned int msec,
return NULL;
}
timeout = g_malloc(sizeof(*timeout));
timeout = g_new0(fpi_timeout, 1);
timeout->callback = callback;
timeout->dev = dev;
timeout->data = data;
@ -169,7 +199,27 @@ void fpi_timeout_cancel(fpi_timeout *timeout)
{
G_DEBUG_HERE();
active_timers = g_slist_remove(active_timers, timeout);
g_free(timeout);
fpi_timeout_free(timeout);
}
void
fpi_timeout_cancel_for_dev(struct fp_dev *dev)
{
GSList *l;
g_return_if_fail (dev != NULL);
l = active_timers;
while (l) {
struct fpi_timeout *timeout = l->data;
GSList *current = l;
l = l->next;
if (timeout->dev == dev) {
fpi_timeout_free (timeout);
active_timers = g_slist_delete_link (active_timers, current);
}
}
}
/* get the expiry time and optionally the timeout structure for the next
@ -216,7 +266,7 @@ static void handle_timeout(struct fpi_timeout *timeout)
G_DEBUG_HERE();
timeout->callback(timeout->dev, timeout->data);
active_timers = g_slist_remove(active_timers, timeout);
g_free(timeout);
fpi_timeout_free(timeout);
}
static int handle_timeouts(void)
@ -413,7 +463,7 @@ void fpi_poll_init(void)
void fpi_poll_exit(void)
{
g_slist_free_full(active_timers, g_free);
g_slist_free_full(active_timers, (GDestroyNotify) fpi_timeout_free);
active_timers = NULL;
fd_added_cb = NULL;
fd_removed_cb = NULL;

2
libfprint/fpi-poll.h
View file

@ -42,4 +42,6 @@ fpi_timeout *fpi_timeout_add(unsigned int msec,
fpi_timeout_fn callback,
struct fp_dev *dev,
void *data);
void fpi_timeout_set_name(fpi_timeout *timeout,
const char *name);
void fpi_timeout_cancel(fpi_timeout *timeout);