[Symphony-tickets] [SYMPHONY] #95: add a new function in the C API to allow a premature stop of the solver.

[SYMPHONY]

#95: add a new function in the C API to allow a premature stop of the solver.
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 Reporter:  ycollet      |       Owner:  tkr
     Type:  enhancement  |      Status:  new
 Priority:  normal       |   Milestone:  5.2
Component:  Not Sure     |     Version:     
 Keywords:               |  
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 LPSolve has such a function. See at:
 http://lpsolve.sourceforge.net/5.5/put_logfunc.htm
 It is very useful especially in MIP. MIP resolution can be very time
 consuming and (I am working on a scilab interface to Symphony), if you
 start your resolution, I will control again scilab only at the end of the
 resolution.
 Here is the function I pass to put_logfunc in my lpsolve interface:
 int __WINAPI abortfunction(lprec *lp, void *userhandle)
 {
   int doabort = (C2F(basbrk).iflag == -1);

   C2F(basbrk).iflag = 0;

   return(doabort);
 }

 C2F(basbrk).iflag is a fortran common variable which is set to true if
 ctrl+c is hit.
 In fortran, true == -1. So, when I hit ctrl+c, this function returns TRUE
 and stops the resolution.

 YC

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Ticket URL: <https://projects.coin-or.org/SYMPHONY/ticket/95>
SYMPHONY <http://projects.coin-or.org/SYMPHONY>
The SYMPHONY framework for parallel branch-and-cut algorithms.