From: achill at matrix.gatewaynet.com (Achilleas Mantzios) Date: Mon, 04 Feb 2013 17:46:03 +0200 Subject: [Pljava-dev] FreeBSD pl/java problem In-Reply-To: <4461985.cuacIgvZGL@smadev.internal.net> References: <4461985.cuacIgvZGL@smadev.internal.net> Message-ID: <1574535.zJ9Qr5fcjM@smadev.internal.net> Just an update on this : by inserting some elog statements in ./src/C/pljava/Backend.c just before JNI_createVM : elog(DEBUG1, "Creating JavaVM"); elog(INFO,"jstat = %d",jstat); //jstat = JNI_createVM(&s_javaVM, &vm_args); JNIEnv *env; jstat = JNI_CreateJavaVM(&s_javaVM, (void**)&env, &vm_args); elog(INFO,"jstat = %d",jstat); it never gets into the second elog, which means it hangs in JNI_CreateJavaVM. Outside postgresql i can run JNI programs with no problem. Any clues? On ????? 04 ?????? 2013 15:17:11 Achilleas Mantzios wrote: > Hello, > > I am running postgresql 9.2.2 with > openjdk version "1.6.0_32" > OpenJDK Runtime Environment (build 1.6.0_32-b25) > OpenJDK 64-Bit Server VM (build 20.0-b12, mixed mode) > On FreeBSD 8.3-RELEASE > > I am having trouble even running simple tests like : > CREATE FUNCTION getsysprop(VARCHAR) > RETURNS VARCHAR > AS 'java.lang.System.getProperty' > LANGUAGE java; > > SELECT getsysprop('user.home'); > > When i do that, the session hangs, and have to kill -9 the backend. > > Searching with truss got : > > gettimeofday({1359983241.596250 },0x0) = 0 (0x0) > gettimeofday({1359983241.596275 },0x0) = 0 (0x0) > gettimeofday({1359983241.596300 },0x0) = 0 (0x0) > gettimeofday({1359983241.596327 },0x0) = 0 (0x0) > gettimeofday({1359983241.596352 },0x0) = 0 (0x0) > gettimeofday({1359983241.596378 },0x0) = 0 (0x0) > gettimeofday({1359983241.596403 },0x0) = 0 (0x0) > gettimeofday({1359983241.596431 },0x0) = 0 (0x0) > gettimeofday({1359983241.596458 },0x0) = 0 (0x0) > gettimeofday({1359983241.596482 },0x0) = 0 (0x0) > gettimeofday({1359983241.596507 },0x0) = 0 (0x0) > gettimeofday({1359983241.596532 },0x0) = 0 (0x0) > gettimeofday({1359983241.596556 },0x0) = 0 (0x0) > _umtx_op(0x7fffffffc7e8,0x3,0x1,0x0,0x0,0x1) = 0 (0x0) > sigprocmask(SIG_BLOCK,SIGHUP|SIGINT|SIGQUIT|SIGABRT|SIGEMT|SIGKILL|SIGSYS|SIGPIPE|SIGALRM|SIGTERM|SIGURG|SIGSTOP|SIGTSTP|SIGCONT|SIGCHLD|SIGTTIN|SIGTTOU|SIGIO|SIGXCPU|SIGXFSZ|SIGVTALRM|SIGPROF|SIGWINCH|SIGINFO|SIGUSR1|SIGUSR2,0x0) = 0 (0x0) > sigprocmask(SIG_SETMASK,0x0,0x0) = 0 (0x0) > sigprocmask(SIG_BLOCK,SIGHUP|SIGINT|SIGQUIT|SIGABRT|SIGEMT|SIGKILL|SIGSYS|SIGPIPE|SIGALRM|SIGTERM|SIGURG|SIGSTOP|SIGTSTP|SIGCONT|SIGCHLD|SIGTTIN|SIGTTOU|SIGIO|SIGXCPU|SIGXFSZ|SIGVTALRM|SIGPROF|SIGWINCH|SIGINFO|SIGUSR1|SIGUSR2,0x0) = 0 (0x0) > sigprocmask(SIG_SETMASK,0x0,0x0) = 0 (0x0) > > while ktrace gave : > > 98910 initial thread CALL gettimeofday(0x7fffffffc900,0) > 98910 initial thread RET gettimeofday 0 > 98910 initial thread CALL gettimeofday(0x7fffffffc900,0) > 98910 initial thread RET gettimeofday 0 > 98910 initial thread CALL gettimeofday(0x7fffffffc900,0) > 98910 initial thread RET gettimeofday 0 > 98910 initial thread CALL gettimeofday(0x7fffffffc900,0) > 98910 initial thread RET gettimeofday 0 > 98910 initial thread CALL gettimeofday(0x7fffffffc940,0) > 98910 initial thread RET gettimeofday 0 > 98910 initial thread CALL _umtx_op(0x7fffffffc7e8,0x3,0x1,0,0) > 98910 initial thread RET _umtx_op 0 > 98910 initial thread CALL sigprocmask(SIG_BLOCK,0x7fffffffc780,0x8016167d8) > 98910 initial thread RET sigprocmask 0 > 98910 initial thread CALL sigprocmask(SIG_SETMASK,0x8016167d8,0) > 98910 initial thread RET sigprocmask 0 > 98910 initial thread CALL sigprocmask(SIG_BLOCK,0x7fffffffc6e0,0x8016167d8) > 98910 initial thread RET sigprocmask 0 > 98910 initial thread CALL sigprocmask(SIG_SETMASK,0x8016167d8,0) > 98910 initial thread RET sigprocmask 0 > 98910 initial thread CALL _umtx_op(0x8f8dc4280,0x11,0,0,0) > > I found some relevant problems with FreeBSD systems hanging after an _umtx_op but all those point > to threading problems that now are solved. I found nothing modern about _umtx_op. > > I know FreeBSD is not a "Tier-1" platform for postgresql (nor java), but this is my main platform and i'd like > to stick with this. > > Is there anything i could do to get closer to make pl/java work with FreeBSD? > > Of course i will have to reach other communities as well (freebsd-java, etc...) > but any pointers from you would be just great. > > Also read this http://postgresql.1045698.n5.nabble.com/Java-VM-stalls-during-quot-install-jar-quot-td3290754.html thread. > Very close to my situation. JNI standalone also worked for me. > > - > Achilleas Mantzios > IT DEV > IT DEPT > Dynacom Tankers Mgmt > _______________________________________________ > Pljava-dev mailing list > Pljava-dev at pgfoundry.org > http://lists.pgfoundry.org/mailman/listinfo/pljava-dev - Achilleas Mantzios IT DEV IT DEPT Dynacom Tankers Mgmt