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/* $Header: /home/cvs/mod_log_sql/functions20.h,v 1.2 2004/01/20 19:38:08 urkle Exp $ */
/* functions */
static const char *extract_request_time_custom(request_rec *r, char *a,
apr_time_exp_t *xt)
{
apr_size_t retcode;
char tstr[MAX_STRING_LEN];
apr_strftime(tstr, &retcode, sizeof(tstr), a, xt);
return apr_pstrdup(r->pool, tstr);
}
#define DEFAULT_REQUEST_TIME_SIZE 32
typedef struct {
unsigned t;
char timestr[DEFAULT_REQUEST_TIME_SIZE];
unsigned t_validate;
} cached_request_time;
#define TIME_CACHE_SIZE 4
#define TIME_CACHE_MASK 3
static cached_request_time request_time_cache[TIME_CACHE_SIZE];
static const char *extract_request_time(request_rec *r, char *a)
{
apr_time_exp_t xt;
/* Please read comments in mod_log_config.h for more info about
* the I_INSIST....COMPLIANCE define
*/
if (a && *a) { /* Custom format */
#ifdef I_INSIST_ON_EXTRA_CYCLES_FOR_CLF_COMPLIANCE
ap_explode_recent_localtime(&xt, apr_time_now());
#else
ap_explode_recent_localtime(&xt, r->request_time);
#endif
return extract_request_time_custom(r, a, &xt);
} else { /* CLF format */
/* This code uses the same technique as ap_explode_recent_localtime():
* optimistic caching with logic to detect and correct race conditions.
* See the comments in server/util_time.c for more information.
*/
cached_request_time* cached_time = apr_palloc(r->pool,
sizeof(*cached_time));
#ifdef I_INSIST_ON_EXTRA_CYCLES_FOR_CLF_COMPLIANCE
apr_time_t request_time = apr_time_now();
#else
apr_time_t request_time = r->request_time;
#endif
unsigned t_seconds = (unsigned)apr_time_sec(request_time);
unsigned i = t_seconds & TIME_CACHE_MASK;
memcpy(cached_time, &(request_time_cache[i]), sizeof(*cached_time));
if ((t_seconds != cached_time->t) ||
(t_seconds != cached_time->t_validate)) {
/* Invalid or old snapshot, so compute the proper time string
* and store it in the cache
*/
char sign;
int timz;
ap_explode_recent_localtime(&xt, r->request_time);
timz = xt.tm_gmtoff;
if (timz < 0) {
timz = -timz;
sign = '-';
}
else {
sign = '+';
}
cached_time->t = t_seconds;
apr_snprintf(cached_time->timestr, DEFAULT_REQUEST_TIME_SIZE,
"[%02d/%s/%d:%02d:%02d:%02d %c%.2d%.2d]",
xt.tm_mday, apr_month_snames[xt.tm_mon],
xt.tm_year+1900, xt.tm_hour, xt.tm_min, xt.tm_sec,
sign, timz / (60*60), timz % (60*60));
cached_time->t_validate = t_seconds;
memcpy(&(request_time_cache[i]), cached_time,
sizeof(*cached_time));
}
return cached_time->timestr;
}
}
static const char *extract_request_duration(request_rec *r, char *a)
{
apr_time_t duration = apr_time_now() - r->request_time;
return apr_psprintf(r->pool, "%" APR_TIME_T_FMT, apr_time_sec(duration));
}
static const char *extract_request_timestamp(request_rec *r, char *a)
{
return apr_psprintf(r->pool, "%"APR_TIME_T_FMT, apr_time_sec(apr_time_now()));
}
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