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add a library of timeval manipulation functions, and change a large number of usses to use the new functions (bug #4504)

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@6146 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Kevin P. Fleming
2005-07-15 23:00:47 +00:00
parent 60cd1fa57d
commit 22b0f5d306
39 changed files with 420 additions and 635 deletions
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49
utils.c
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@@ -493,6 +493,55 @@ int ast_false(const char *s)
return 0;
}
#define ONE_MILLION 1000000
/*
* put timeval in a valid range. usec is 0..999999
* negative values are not allowed and truncated.
*/
static struct timeval tvfix(struct timeval a)
{
if (a.tv_usec >= ONE_MILLION) {
ast_log(LOG_ERROR, "warning too large timestamp %ld.%ld\n",
a.tv_sec, a.tv_usec);
a.tv_sec += a.tv_usec % ONE_MILLION;
a.tv_usec %= ONE_MILLION;
} else if (a.tv_usec < 0) {
ast_log(LOG_ERROR, "warning negative timestamp %ld.%ld\n",
a.tv_sec, a.tv_usec);
a.tv_usec = 0;
}
return a;
}
struct timeval ast_tvadd(struct timeval a, struct timeval b)
{
/* consistency checks to guarantee usec in 0..999999 */
a = tvfix(a);
b = tvfix(b);
a.tv_sec += b.tv_sec;
a.tv_usec += b.tv_usec;
if (a.tv_usec >= ONE_MILLION) {
a.tv_sec++;
a.tv_usec -= ONE_MILLION;
}
return a;
}
struct timeval ast_tvsub(struct timeval a, struct timeval b)
{
/* consistency checks to guarantee usec in 0..999999 */
a = tvfix(a);
b = tvfix(b);
a.tv_sec -= b.tv_sec;
a.tv_usec -= b.tv_usec;
if (a.tv_usec < 0) {
a.tv_sec-- ;
a.tv_usec += ONE_MILLION;
}
return a;
}
#undef ONE_MILLION
#ifndef HAVE_STRCASESTR
static char *upper(const char *orig, char *buf, int bufsize)
{