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| Code Block | ||
|---|---|---|
| ||
int do_work(int seconds_to_work) {
time_t start = time(NULL);
if (start == (time_t)(-1)) {
/* Handle error */
}
while (time(NULL) < start + seconds_to_work) {
/* ... */
}
return 0;
}
|
Compliant Solution
This compliant solution uses difftime() to determine the difference between two time_t values. difftime() returns the number of seconds from the second parameter until the first parameter and returns the result as a double.
| Code Block | ||
|---|---|---|
| ||
int do_work(int seconds_to_work) {
time_t start = time(NULL);
time_t current = start;
if (start == (time_t)(-1)) {
/* Handle error */
}
while (difftime(current, start) < seconds_to_work) {
current = time(NULL);
if (current == (time_t)(-1)) {
/* Handle error */
}
/* ... */
}
return 0;
}
|
Note that this loop may still not exit, because the range of time_t may not be able to represent two times seconds_to_work apart.
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