+ if (filename.empty())
+ {
+ _successful= false;
+ return;
+ }
+
+ for (waited= 0, retry= 1; ; retry++, waited+= this_wait)
+ {
+ if (access(filename.c_str(), R_OK) == 0)
+ {
+ _successful= true;
+ break;
+ }
+ else if (waited >= timeout)
+ {
+ break;
+ }
+
+ this_wait= retry * retry / 3 + 1;
+ libtest::dream(0, this_wait * 10000000);
+ }
+ }
+
+ Wait(const pid_t &_pid_arg, uint32_t timeout= 6) :
+ _successful(false)
+ {
+ uint32_t waited;
+ uint32_t this_wait;
+ uint32_t retry;
+