[Help-glpk] xmalloc, thread-safety

[Hruby Martin]

Hello Andrew,

I am trying to run GLPK in multi-thread way, but I discovered, that there 
is a problem with memory allocation/deallocation.

As I know, standard malloc and free should be thread-safe. Is there any 
special reason why you implement some higher "protocol" using 
xmalloc/xfree? I modified the library code:

void    *xmalloc(int size) {
        return calloc(1, size);
        ....
}

( xfree similarly) and my testing program works fine, but malloc takes to 
much processor time. There are many "xcalloc" in "simplex1" function. Is 
it possible to pack them all to only one xcalloc call with offsets?

char *mpo = xcalloc(sum_of_all_doubles, sizeof(double)))

...
and for example:

spx->lb = mpo + ...;

Or even better? ;-)


thanks for your help

Martin