Arnold Robbins wrote: > Paul Eggert <egg...@cs.ucla.edu> wrote: > > Yes it is supposed to be. > > News to me.
:) It's time that we start documenting the multithread-safety of the gnulib modules. Cf. [1] > In any case, gawk's use of it is (and will remain) single-threaded. > It'd be nice if your fix did not pull in more libraries, like libpthread > or whatever, since that would considerably complicate things for me, > for no actual gain w.r.t. gawk. If you add these two lines to configure.ac: gl_cv_func_setlocale_null_all_mtsafe=yes gl_cv_func_setlocale_null_one_mtsafe=yes no additional libraries will be needed. > I'm curious what is the use case for multithreaded dfa? One could speed up grep -r PATTERN DIRECTORY_WITH_MANY_FILES by a large factor (probably 4x or 5x, on a CPU with 8 threads). This would be done by modifying 'grep' to process each file in a separate thread. The kernel can feed the data of these files to 'grep' in parallel. Only the output phase needs to serialize things. José Marchesi suggested this, a couple of months ago. Bruno [1] https://lists.gnu.org/archive/html/bug-gnulib/2019-12/msg00002.html
