#### D.2.3.16 watchdog

Procedure from library `general.lib` (see general_lib).

Return:
  Result of cmd, if the result can be computed in i seconds. Otherwise the computation is interrupted after i seconds, the string "Killed" is returned and the global variable 'watchdog_interrupt' is defined.

Note:
  * the current basering should not be watchdog_rneu, since watchdog_rneu will be killed
  * if there are variable names of the structure x(i) all polynomials have to be put into eval(...) in order to be interpreted correctly
  * a second Singular process is started by this procedure

Example:

    LIB "general.lib";
    proc sleep(int s) {return(system("sh","sleep "+string(s)));}
    watchdog(1,"sleep(5)");
    ==> Killed
    watchdog(10,"sleep(5)");
    ==> 0

User manual for Singular version 4-0-3, 2016, generated by texi2html.