Sebastian Hartte wrote: > Hi you two, > > I tried a similar thing (using Visual Studio 2005 Professional). The > empty structs are still an error in that compiler version (What do you > need empyt structs for anyway? Allocation a zero byte memory region > doesn't make much sense to me). > But i also run into problems with pthread.h since that doesn't exist on > Windows. Either i screwed up and included the wrong header files > (but i think jvm.h belongs to the project) or the threading is entirely > based on pthreads. > Isn't there some form of platform independent threading in the apache httpd > project that could be used over here? After all refactoring is cool ;-)
There was a discussion about using APR a while ago; and for people with a really long memory I briefly discussed the model we use for class library and VM portability [1]. We have a common libraries used to provide functionality to the VM and classlibs: - the portlib has portable functions for file, socket, sysinfo, memory, error codes, etc. - the thread library for portable threading and synchronization support. - other libraries for archive (zip/jar) and pooling support that are usually required by both. There are a couple of interesting design points. The portlib is a table of function pointers, and it is passed-along in the first arg of each function. This means that you can trivially patch a function implementation to do whatever you want (logging, resource management, etc.) on those functions and that will 'flow-through' to downstream calls. The initial portlib is created and passed into the VM as an argument to JNI_CreateJavaVM. The VM is expected to stash it so it can be retrieved via either a JavaVM or JNIEnv. This means that the classlibs can use them in JNI code, and will pick-up the patched functions etc. Regards, Tim [1] http://mail-archives.apache.org/mod_mbox/incubator-harmony-dev/200509.mbox/[EMAIL PROTECTED] > bye, > Sebastian > > Enrico Migliore wrote: > > >>>Enrico, >>> >>>Did Tim's comment help? Did this resolve it? >>>Have you had any other porting issues in either >>>compilation or configuration? I would like for us to >>>keep up with these sorts of issues because it would >>>be great if we could support MSVC as one of the >>>development _and_ target type environments >>>for bootJVM. >>> >>>Are you by chance familiar with doing InstallShield >>>scripts? This would give us an alternative for Windows >>>platforms for doing configuration and installation. >>>Please let everyone know what all you find as you >>>work with the MSVC environment so that that source >>>can be adjusted for portability when all the issues >>>are resolved. Just by the way, I'm still working on >>>the final bit of basic functionality of the JVM runtime >>>engine and should have something available soon. >>>Thanks for your help and interest. >>> >>>Dan Lydick >>> >>> >>> >>> >> >>Hi Dan, >> >>I'm trying to compille bootJVM with MSVC 6.0. >> >>Tim's. suggestion (long long = __int64) works fine. >> >>I didn't translate the configuration and build scripts into .bat files >>for Windows, I just >>ran the scripts in Cygwin, in order to have the source tree available >>and made a >>"console application" in MSVC. >>I'm not much familiar with InstallShield scripts and honestly I'd >>prefer to dedicate >>my spare time to work on the source code side (C is my "daily bread"). >> >>Right now I got some problems which I'm planning to solve during the >>weekend, >>here are two examples: >> >>-------------------------------------------------------------------------------------- >> >>rvoid argv_init(int argc, char **argv, char **envp) >>{ >> rchar *chkjh; >> chkjh = (rchar *) rnull; >> rchar *chkcp; <--- MSVC flags this as a compilation error >> >>..\jvm\src\argv.c(127) : error C2275: 'rchar' : illegal use of this >>type as an expression >>-------------------------------------------------------------------------------------- >> >> >>-------------------------------------------------------------------------------------- >> >>typedef struct >>{ >> u1 tag; >> u2 string_index; >> >> struct LOCAL_String_binding >> { >> <-- MSVC doesn't >>like an empty struct >> } LOCAL_String_binding; >> } CONSTANT_String_info; >> >>..\jvm\src\classfile.h(1031) : error C2059: syntax error : '}' >> >>I have to add "int foo;" in order to proceed >>-------------------------------------------------------------------------------------- >> >> >> >>Certainly, the code will have to be slightly adjusted for portability. >> >>Let me proceed and after the weekend I'll write a report. >> >> >>ciao, >>Enrico >> >> >> > > > -- Tim Ellison ([EMAIL PROTECTED]) IBM Java technology centre, UK.
