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Code Issues Releases Wiki Activity

752. [func] Correct bad tv_usec elements returned by gettimeofday().

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This commit is contained in:
Mark Andrews
2001-02-23 23:12:28 +00:00
parent c6f7fb355d
commit df0f58959e
4 changed files with 37 additions and 3 deletions
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32
lib/isc/unix/time.c
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@@ -15,7 +15,7 @@
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: time.c,v 1.30 2001/01/09 21:58:33 bwelling Exp $ */
/* $Id: time.c,v 1.31 2001/02/23 23:12:28 marka Exp $ */
#include <config.h>
@@ -25,6 +25,7 @@
#include <sys/time.h> /* Required for struct timeval on some platforms. */
#include <isc/log.h>
#include <isc/string.h>
#include <isc/time.h>
#include <isc/util.h>
@@ -40,6 +41,10 @@
* need an initialized type.
*/
#ifndef ISC_FIX_TV_USEC
#define ISC_FIX_TV_USEC 1
#endif
/***
*** Intervals
***/
@@ -130,9 +135,13 @@ isc_time_isepoch(isc_time_t *t) {
return (ISC_FALSE);
}
isc_result_t
isc_time_now(isc_time_t *t) {
struct timeval tv;
#if ISC_FIX_TV_USEC
isc_boolean_t fixed = ISC_FALSE;
#endif
/*
* Set *t to the current absolute time.
@@ -152,8 +161,29 @@ isc_time_now(isc_time_t *t) {
* happening are pretty much zero, but since the libisc library ensures
* certain things to be true ...
*/
#if ISC_FIX_TV_USEC
if (tv.tv_sec < 0) {
fixed = ISC_TRUE;
do {
tv.tv_sec -= 1;
tv.tv_usec += US_PER_S;
} while (tv.tv_usec < 0);
} else if (tv.tv_sec >= US_PER_S) {
fixed = ISC_TRUE;
do {
tv.tv_sec += 1;
tv.tv_usec -= US_PER_S;
} while (tv.tv_usec >=US_PER_S);
} else if (tv.tv_sec < 0)
return (ISC_R_UNEXPECTED);
if (fixed)
isc_log_write(isc_lctx, ISC_LOGCATEGORY_GENERAL,
ISC_LOGMODULE_TIME, ISC_LOG_INFO,
"gettimeofday returned bad tv_usec: corrected");
#else
if (tv.tv_sec < 0 || tv.tv_usec < 0 || tv.tv_usec >= US_PER_S)
return (ISC_R_UNEXPECTED);
#endif
/*
* Ensure the tv_sec value fits in t->seconds.