On Thu, Jul 11, 2019 at 8:42 PM Rainer Jung <rainer.j...@kippdata.de> wrote:
> Hi Rémy, > > Am 11.07.2019 um 18:35 schrieb Rémy Maucherat: > > On Thu, Jul 11, 2019 at 4:36 PM Rainer Jung <rainer.j...@kippdata.de > > <mailto:rainer.j...@kippdata.de>> wrote: > > > > Probably not very helup, but to make sure, the GetEnv is failing, I > > would add a little code to native/src/jnilib.c in JNI_OnLoad() that > > creates an observable side effect while executing int he function. > E.g. > > on Unix/Linux you could add something like > > > > #include <stdio.h> > > > > ... > > > > FILE *fd = fopen("/tmp/mytrace", "w"); > > int fputs("At step 1", fd); > > int fflush(fd); > > ... > > int fputs("At step 2", fd); > > int fflush(fd); > > ... > > int fputs("At step N", fd); > > int fflush(fd); > > int fclose(fd); > > > > Sure poor man's tacing, but it will show, how for you get through > > JNI_OnLoad() before it is returning. > > > > Sorry for not being more helpful, > > > > > > Good idea. So it's failing on: > > TCN_LOAD_CLASS(env, jFinfo_class, TCN_FINFO_CLASS, JNI_ERR); > > And I need to define this in the JNI configuration, much like it's done > > for Java reflection and dynamic class loading. Only difference I haven't > > really been using it yet. The classes are traced but the configure tool > > which converts the trace into the config does not work properly [yet]. > > When one looks up the macros in native/include/tcn.h, this boils down to > the following returning null: > > (*env)->FindClass(env, "org/apache/tomcat/jni/FileInfo") > > So our own FileInfo class can not be found. FindClass docs indicate its > searched in the CLASSPATH although I'm not sure whether its really the > classpath or some search paths of a class loader hierarchy. > > You might want to add the JVM commandline flag "-verbose:class" for any > easy way to track class loading. > > I didn't really grok what you meant with "define in JNI configuration". > For normal JVMs the code just works, so what might be special for Graal > that org.apache.tomcat.jni.FileInfo can't be found? > A Graal native image is indeed not a normal JVM and does not support any kind of dynamic class loading, it has to be declared first in these configuration files. So I am adding this to the jni one: { "name":"org.apache.tomcat.jni.FileInfo" }, { "name":"org.apache.tomcat.jni.Sockaddr" }, { "name":"org.apache.tomcat.jni.FileInfo" }, { "name":"java.lang.String", "methods" : [{"name":"<init>","parameterTypes":["byte[]"]},{"name":"getBytes","parameterTypes":[]}] } And loading now works. Jul 11, 2019 9:39:28 PM org.apache.catalina.core.AprLifecycleListener lifecycleEvent INFO: Loaded APR based Apache Tomcat Native library [1.2.23] using APR version [1.6.5]. Jul 11, 2019 9:39:28 PM org.apache.catalina.core.AprLifecycleListener lifecycleEvent INFO: APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true]. Jul 11, 2019 9:39:28 PM org.apache.catalina.core.AprLifecycleListener lifecycleEvent INFO: APR/OpenSSL configuration: useAprConnector [false], useOpenSSL [true] Jul 11, 2019 9:39:28 PM org.apache.catalina.core.AprLifecycleListener initializeSSL INFO: OpenSSL successfully initialized [OpenSSL 1.1.1c FIPS 28 May 2019] However when trying to actually connect I got: Segmentation fault (core dumped) Oops. Rémy > Regards, > > Rainer > > --------------------------------------------------------------------- > To unsubscribe, e-mail: dev-unsubscr...@tomcat.apache.org > For additional commands, e-mail: dev-h...@tomcat.apache.org > >
