2nd try... Would be grateful if somebody could confirm one way or the other. On Thu, Aug 14, 2008 at 8:36 PM, nimble dude <nimble.dude@xxxxxxxxx> wrote: > Hello, > > I have a newbie question about gcov and SMP support in gcov. > > I am trying to measure the coverage information of a > multi-threaded application running on an SMP platform. I compiled the > image with "-fprofile-arcs -ftest-coverage" and linked with -lgcov. > All optimizations were turned off. When the coverage was observed, > some of the counters were wrong. Sure enough, in the disassembly > output, the incrementing of the gcov related variables was not atomic. > Searching gcc manuals for further info on gcov did not yield any > information. The documentation on SMP and gcov support is rather > sparse. > > - Does gcc-4.2 support atomic_increment of the gcov related information? > - If so, is there another option that needs to be specified along with "gcc" > - Does gcc-4.3.1 support atomic_increment of gcov counters > natively(i.e, without further flags)? > > I appreciate your help in advance. Please excuse if this is already > mentioned in documentation. > > Thank you, > Ram >
