DeforaOS/utils
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Code cleanup and attempting to use sysconf() for better POSIX compliance

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This commit is contained in:
Pierre Pronchery 2004-09-13 09:02:01 +00:00
parent 9b169fa7f4
commit 12369f6e2f
1 changed files with 36 additions and 10 deletions
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46
src/time.c
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@ -13,6 +13,8 @@ extern int optind;
/* time */
static int _time_error(char * error, int ret);
static int _time_exec(char * argv[]);
static int _time_print(long real, long user, long sys);
static int _time(int argc, char * argv[])
{
pid_t pid;
@ -25,12 +27,7 @@ static int _time(int argc, char * argv[])
if((pid = fork()) == -1)
return _time_error("fork", 2);
if(pid == 0)
{
execvp(argv[0], argv);
if(errno == ENOENT)
return _time_error(argv[0], 127);
return _time_error(argv[0], 126);
}
return _time_exec(argv);
for(;;)
{
if(waitpid(pid, &status, 0) == -1)
@ -40,12 +37,9 @@ static int _time(int argc, char * argv[])
}
if((cafter = times(&tmsbuf)) == -1)
return _time_error("times", 2);
/* FIXME */
fprintf(stderr, "real %ld\nuser %ld\nsys %ld\n",
cafter - cbefore,
return _time_print(cafter - cbefore,
tmsbuf.tms_utime + tmsbuf.tms_cutime,
tmsbuf.tms_stime + tmsbuf.tms_cstime);
return 0;
}
static int _time_error(char * message, int ret)
@ -55,6 +49,38 @@ static int _time_error(char * message, int ret)
return ret;
}
static int _time_exec(char * argv[])
{
execvp(argv[0], argv);
if(errno == ENOENT)
return _time_error(argv[0], 127);
return _time_error(argv[0], 126);
}
static int _time_print(long real, long user, long sys)
{
char * args[3] = { "real", "user", "sys" };
long * argl[3] = { &real, &user, &sys };
int i;
long l;
long r;
if((r = sysconf(_SC_CLK_TCK)) == -1)
{
_time_error("sysconf", 0);
r = 100;
}
for(i = 0; i < 3; i++)
{
l = *argl[i] / r;
if(l * r > *argl[i])
l--;
/* FIXME */
fprintf(stderr, "%s %ld.%02lds\n", args[i], l, *argl[i] % r);
}
return 0;
}
/* usage */
static int _usage(void)