New subject: Workaround for SYS:RUN-PROGRAM under openjdk11+ (was Re: run-program issues with OpenJDK 11)

28 Jun 2020


      It appears that java.lang.UNIXProcess was removed in OpenJDK 9 or
thereabouts, assuming I'm interpreting
https://github.com/openjdk/jdk/commit/aa6b19f38ee4dc69cac664d1211bff0e69b31f...
correctly (/definitely/ not a Java developer here...).
This seems to make run-program unusable when using prebuilt jars on
recent JREs. Using the prebuilt 1.7.0 release and OpenJDK 11, I get the
errors shown in prebuilt-openjdk11.txt (attached).
If compiling using OpenJDK 11, run-program seems usable, but any attempt
to get the PID of a process gives the error in from-source-openjdk11.txt
(attached).
-Eric
VM settings:
    Max. Heap Size (Estimated): 7.79G
    Using VM: OpenJDK 64-Bit Server VM
Armed Bear Common Lisp 1.7.0
Java 11.0.7 Oracle Corporation
OpenJDK 64-Bit Server VM
Low-level initialization completed in 0.198 seconds.
Startup completed in 1.107 seconds.
Type ":help" for a list of available commands.
CL-USER(1): (sys:run-program "ls" nil)
Error loading jar:file:/home/abcl/work/abcl/dist/abcl.jar!/org/armedbear/lisp/run-program.abcl at line 278 (offset 19142)
#<THREAD "interpreter" {5C1AE0C4}>: Debugger invoked on condition of type ERROR
  Class not found: java.lang.UNIXProcess
Restarts:
  0: TOP-LEVEL Return to top level.
[1] SYS(2): 0
java.lang.ExceptionInInitializerError
        at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
        at java.base/java.lang.Class.newInstance(Class.java:584)
        at org.armedbear.lisp.FaslClassLoader.loadFunction(FaslClassLoader.java:130)
        at org.armedbear.lisp.FaslClassLoader$pf_get_fasl_function.execute(FaslClassLoader.java:165)
        at org.armedbear.lisp.LispThread.execute(LispThread.java:832)
        at org.armedbear.lisp.Lisp.evalCall(Lisp.java:582)
        at org.armedbear.lisp.Lisp.eval(Lisp.java:540)
        at org.armedbear.lisp.Lisp.evalCall(Lisp.java:577)
        at org.armedbear.lisp.Lisp.eval(Lisp.java:540)
        at org.armedbear.lisp.Lisp.progn(Lisp.java:709)
        at org.armedbear.lisp.SpecialOperators$sf_progn.execute(SpecialOperators.java:273)
        at org.armedbear.lisp.Lisp.eval(Lisp.java:530)
        at org.armedbear.lisp.Load.faslLoadStream(Load.java:667)
        at org.armedbear.lisp.Load$init_fasl.execute(Load.java:457)
        at org.armedbear.lisp.LispThread.execute(LispThread.java:832)
        at org.armedbear.lisp.Lisp.evalCall(Lisp.java:582)
        at org.armedbear.lisp.Lisp.eval(Lisp.java:540)
        at org.armedbear.lisp.Load.loadStream(Load.java:629)
        at org.armedbear.lisp.Load.loadFileFromStream(Load.java:597)
        at org.armedbear.lisp.Load.loadFileFromStream(Load.java:477)
        at org.armedbear.lisp.Load.loadSystemFile(Load.java:375)
        at org.armedbear.lisp.Load.loadSystemFile(Load.java:255)
        at org.armedbear.lisp.Autoload.effectiveLoad(Autoload.java:110)
        at org.armedbear.lisp.Autoload.load(Autoload.java:147)
        at org.armedbear.lisp.Lisp.eval(Lisp.java:537)
        at org.armedbear.lisp.Primitives$pf__eval.execute(Primitives.java:345)
        at org.armedbear.lisp.LispThread.execute(LispThread.java:814)
        at org.armedbear.lisp.Lisp.evalCall(Lisp.java:575)
        at org.armedbear.lisp.Lisp.eval(Lisp.java:540)
        at org.armedbear.lisp.Lisp.progn(Lisp.java:709)
        at org.armedbear.lisp.Primitives$sf_block.execute(Primitives.java:3743)
        at org.armedbear.lisp.Lisp.eval(Lisp.java:530)
        at org.armedbear.lisp.Lisp.progn(Lisp.java:709)
        at org.armedbear.lisp.Closure.execute(Closure.java:220)
        at org.armedbear.lisp.Closure.execute(Closure.java:148)
        at org.armedbear.lisp.LispThread.execute(LispThread.java:814)
        at org.armedbear.lisp.Lisp$1.execute(Lisp.java:285)
        at org.armedbear.lisp.Symbol.execute(Symbol.java:803)
        at org.armedbear.lisp.LispThread.execute(LispThread.java:814)
        at org.armedbear.lisp.top_level_47.execute(top-level.lisp:407)
        at org.armedbear.lisp.CompiledClosure.execute(CompiledClosure.java:89)
        at org.armedbear.lisp.Symbol.execute(Symbol.java:793)
        at org.armedbear.lisp.LispThread.execute(LispThread.java:798)
        at org.armedbear.lisp.top_level_48.execute(top-level.lisp:415)
        at org.armedbear.lisp.LispThread.execute(LispThread.java:798)
        at org.armedbear.lisp.Interpreter.run(Interpreter.java:361)
        at org.armedbear.lisp.Main$1.run(Main.java:48)
        at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: org.armedbear.lisp.Go
Error loading jar:file:/home/abcl/work/abcl/dist/abcl.jar!/org/armedbear/lisp/run-program.abcl at line 278 (offset 19142)
#<THREAD "interpreter" {5C1AE0C4}>: Debugger invoked on condition of type ERROR
  Compiled function can't be loaded: org.armedbear.lisp.run_program_60 from org.armedbear.lisp.Pathname@49bd2fd0
Restarts:
  0: TOP-LEVEL Return to top level.
[1] SYS(3): 0
CL-USER(4): (exit)
VM settings:
    Max. Heap Size (Estimated): 7.79G
    Using VM: OpenJDK 64-Bit Server VM
Armed Bear Common Lisp 1.7.1-dev
Java 11.0.7 Oracle Corporation
OpenJDK 64-Bit Server VM
Low-level initialization completed in 0.205 seconds.
Startup completed in 1.224 seconds.
Type ":help" for a list of available commands.
CL-USER(1): (sys:run-program "ls" nil :wait nil)
#S(SYSTEM:PROCESS :JPROCESS #<java.lang.ProcessImpl Process[pid=125, exitValue=0] {1E464845}> :%INPUT #S(SYSTEM::SYSTEM-STREAM) :%OUTPUT #S(SYSTEM::SYSTEM-STREAM) :%ERROR #S(SYSTEM::SYSTEM-STREAM))
CL-USER(2): (sys:process-pid *)
#<THREAD "interpreter" {7278E1D6}>: Debugger invoked on condition of type ERROR
  Class not found: java.lang.UNIXProcess
Restarts:
  0: TOP-LEVEL Return to top level.
[1] CL-USER(3): 0
CL-USER(4): (exit)