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D.2.3.17 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
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