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Version 2 incorporating review comments of version 1. Change log relative to winsup/cygwin: * include/sys/cygwin.h: Add CW_CYGHEAP_PROFTHR_ALL. * cygheap.cc (cygheap_profthr_all): New C-callable function that runs cygheap's threadlist handing each pthread's thread handle in turn to profthr_byhandle(). * external.cc (cygwin_internal): Add case CW_CYGHEAP_PROFTHR_ALL. * gmon.c (_mcleanup): Add support for multiple simultaneous gmon.out* files named via environment variable GMON_OUT_PREFIX. * gmon.h (struct gmonparam): Make state decl volatile. * mcount.c (_MCOUNT_DECL): Change stores into gmonparam.state to use Interlocked operations. Add #include "winsup.h", update commentary. * profil.c (profthr_byhandle): New function abstracting out the updating of profile counters based on a thread handle. (profthr_func): Update to call profthr_byhandle() to sample the main thread then call cygheap_profthr_all() indirectly through cygwin_internal(CW_CYGHEAP_PROFTHR_ALL) to sample all other threads. Thanks, ..mark
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0001-gprof-profiling-of-multi-threaded-Cygwin-programs.patch
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