> FWIW, I didn't find a -Xrun flag in the Sun JDK. I did find a -Xrunhprof > flag, which doesn't seem to allow running an external program... You > should let the list know if you're using another JDK. BTW, from your > description above, it's unclear whether you actually run an executable, or > dynamically load a DLL. If the latter, you should know that the Cygwin > DLL is not amenable to dynamic loading, and there are no plans to fix it > ATM.
I never noticed that its not in the help before, but I assure you that Sun JVMs support it (-Xrunhprof is a particular instance that loads hprof.dll, a profiler built in exactly the same manner as mine). Its a DLL. If I invoke java -Xruncygforrest-0:<options> HelloWorld (or more simply java -Xruncygforrest-0:help to print out my profilers help message) the JVM looks for a hook in forrest.dll which sets things in motion. I have seen all sorts of crashes and error messages whilst developing this, but its just so queer to see nothing! The Cygwin DLL must be dynamically loading ... $ nm ./cygforrest-0.dll | grep -C 2 cygwin 10047d40 B __bss_end__ 10043000 B __bss_start__ 10018630 T [EMAIL PROTECTED] 10018030 T [EMAIL PROTECTED] 10018100 T [EMAIL PROTECTED] 10040184 D __data_end__ 10040000 D __data_start__ -- 10018600 T __fopen64 10018610 T __fstat64 10049000 I __head_cygwin1_dll 10049014 I __head_libkernel32_a 10000000 A __image_base__ -- 100491dc I __imp__calloc 100491e0 I __imp__closedir 100491e4 I __imp__cygwin_detach_dll 100491e8 I __imp__cygwin_internal 100491ec I __imp__dlclose 100491f0 I __imp__dlerror -- 10008cb0 t _canonicalize_path 10018210 T _closedir 10049890 I _cygwin1_dll_iname 100185c0 T _cygwin_attach_dll 100185b0 T _cygwin_detach_dll 10018830 T _cygwin_internal 10018820 T _cygwin_premain0 10018810 T _cygwin_premain1 10018800 T _cygwin_premain2 100187f0 T _cygwin_premain3 10043150 b _default_preloaded_symbols 10018330 T _dlclose Maybe this was possible up to but not after version 1.5.5? Might that be the cause? I appreciate your help, Alan. -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
