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Use monotonic time (clock_gettime) for cups_enum_dests #1083

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Use monotonic time (clock_gettime) for cups_enum_dests #1083

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15 changes: 7 additions & 8 deletions cups/dest.c
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Original file line number Diff line number Diff line change
Expand Up @@ -132,7 +132,7 @@ static void cups_dest_query_cb(cups_dnssd_query_t *query, void *cb_data, cups_d
static const char *cups_dest_resolve(cups_dest_t *dest, const char *uri, int msec, int *cancel, cups_dest_cb_t cb, void *user_data);
static bool cups_dest_resolve_cb(void *context);
static void cups_dnssd_unquote(char *dst, const char *src, size_t dstsize);
static int cups_elapsed(struct timeval *t);
static int cups_elapsed(struct timespec *t);
static int cups_enum_dests(http_t *http, unsigned flags, int msec, int *cancel, cups_ptype_t type, cups_ptype_t mask, cups_dest_cb_t cb, void *user_data);
static int cups_find_dest(const char *name, const char *instance,
int num_dests, cups_dest_t *dests, int prev,
Expand Down Expand Up @@ -3058,15 +3058,14 @@ cups_dnssd_unquote(char *dst, // I - Destination buffer
//

static int // O - Elapsed time in milliseconds
cups_elapsed(struct timeval *t) // IO - Previous time
cups_elapsed(struct timespec *t) // IO - Previous time
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Indentation issue, but it is not a blocker.

{
int msecs; // Milliseconds
struct timeval nt; // New time
struct timespec nt; // New time

clock_gettime(CLOCK_MONOTONIC, &nt);

gettimeofday(&nt, NULL);

msecs = (int)(1000 * (nt.tv_sec - t->tv_sec) + (nt.tv_usec - t->tv_usec) / 1000);
msecs = (int)(1000 * (nt.tv_sec - t->tv_sec) + (nt.tv_nsec - t->tv_nsec) / 1000 / 1000);
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Probably we can use '/ 1000000' instead dividing by 1000 twice.


*t = nt;

Expand Down Expand Up @@ -3099,7 +3098,7 @@ cups_enum_dests(
int count, // Number of queries started
completed, // Number of completed queries
remaining; // Remainder of timeout
struct timeval curtime; // Current time
struct timespec curtime; // Current time
_cups_dnssd_data_t data; // Data for callback
_cups_dnssd_device_t *device; // Current device
cups_dnssd_t *dnssd = NULL; // DNS-SD context
Expand Down Expand Up @@ -3292,7 +3291,7 @@ cups_enum_dests(
else
remaining = msec;

gettimeofday(&curtime, NULL);
clock_gettime(CLOCK_MONOTONIC, &curtime);

while (remaining > 0 && (!cancel || !*cancel))
{
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