Re: non-official updated version of glpk (4.61 pre-release)

Hello Andrew,

I would prefer if the relevant CFLAG for thread local memory were determined in configure.ac .

Best regards

Heinrich

On 09.01.17, 13:26 Andrew Makhorin <[email protected]> wrote:

Please see an updated version of glpk here:

http://sourceforge.net/projects/noumenon/files/tmp/

(Note that this is *not* an official release.)

The following main changes were made:

1. The option was added to build a stdcall DLL with MSVC10 (for MS

Windows version).

2. The option was added to build a re-entrant version of the package.

A re-entrant version of the package allows running multiple

*independent* instances of glpk in different threads of a multi-threaded

application.

A re-entrant version of the package can be built, for example, with the

following commands:

./configure ...

make CFLAGS="-DTLS=__thread" ...

The storage-class specifier defined by macro TLS depends on the compiler

used. It may be __thread for older versions of gcc, or _Thread_local if

the compiler conforms to C11.

If the application calls glpk routines from multiple threads, the

following should be taken into account:

1) a thread should not access glpk program objects (e.g. glp_proc)

created by other threads;

2) to prevent memory leaks each thread before termination should call

the glpk api routine glp_free_env.

Andrew Makhorin

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