On 2014.06.25 at 11:35 +0200, Vincenzo Innocente wrote: > I have built a library with -fprofile-generate. Now I want to > generate profiles using various applications that link that library. > > My understanding is that it is safe to run a multi-thread process to > populate the profiles. > It is unclear to me if one can safely run multiple processes concurrently. > > is there any risk of corruption or overwriting of the various "gcda” > files if different processes attempt to write on them? If safe I can > easily speed up the generation of profiles by orders of magnitude. The gcda files are accessed by proper locks, so you should be save. (See gcc/gcov-io.c). -- Markus
