[英]Java through JNI C code call Cobol program on HP Tandem
我想通過java jni C代碼調用Cobol程序。 調用Java代碼后，出現以下錯誤：Java運行時環境檢測到致命錯誤：SIGSEGV（0xb）位於pc = fffffffff2667174，pid = 1174405432，tid = 4
這是我在Tandem上編譯的Cobol程序（XCOBFUNC.cob）：ecobol -c -Wshared XCOBFUNC.cob
?ENV COMMON;INNERLIST
?INSPECT, SYMBOLS
IDENTIFICATION DIVISION.
PROGRAM-ID. XCOBFUNC.
AUTHOR. TEST.
ENVIRONMENT DIVISION.
CONFIGURATION SECTION.
SOURCE-COMPUTER. TANDEM-K2006.
OBJECT-COMPUTER. TANDEM-K2006.
DATA DIVISION.
WORKING-STORAGE SECTION.
01 D-RESULT PIC S9(09) COMP.
LINKAGE SECTION.
77 D-STRING PIC X(20).
77 D-SHORT PIC 9(04) COMP.
77 D-LARGE PIC 9(08) COMP.
PROCEDURE DIVISION USING D-STRING, D-SHORT, D-LARGE.
000-INIT.
DISPLAY "I AM DOING COBOL NOW".
COMPUTE D-RESULT = D-LARGE / D-SHORT.
DISPLAY "D-STRING = " D-STRING.
DISPLAY "D-LARGE = " D-LARGE.
DISPLAY "D-SHORT = " D-SHORT.
DISPLAY "D-RESULT = " D-RESULT.
DISPLAY "LEAVING COBOL PROGRAM NOW".
EXIT-PROGRAM.
這是我的C源文件（HelloJNI.c）：
#include <jni.h>
#include <stdio.h>
#include "HelloJNI.h"
#include "cobincl.h"
// Implementation of native method sayHello() of HelloJNI class
JNIEXPORT jshort JNICALL Java_HelloJNI_sayHello(JNIEnv *env, jobject thisObj, jint par1, jstring jName) {
char outCStr[128] = "From C Program";
jshort error = 0;
short ds;
long dl;
char *tx = "Displayed in COBOL";
const char *name = (*env)->GetStringUTFChars(env, jName, 0);
int i;
jint result = par1 + 5;
printf("Hello World!\n");
printf("par1 = %d \n", par1);
printf("par1 = %s \n", name);
(*env)->ReleaseStringUTFChars(env, jName, name);
ds = 100;
dl = 40000;
XCOBFUNC(tx, &ds, &dl);
printf("ds = %d\n", ds);
printf("I am back in C now and program is ending.\n");
return error;
}
這是我的C頭文件（HelloJNI.h）：
/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class HelloJNI */
#ifndef _Included_HelloJNI
#define _Included_HelloJNI
#ifdef __cplusplus
extern "C" {
#endif
/*
* Class: HelloJNI
* Method: sayHello
* Signature: (ILjava/lang/String;)S
*/
JNIEXPORT jshort JNICALL Java_HelloJNI_sayHello
(JNIEnv *, jobject, jint, jstring);
#ifdef __cplusplus
}
#endif
#endif
這是我的cobincl.h：
void XCOBFUNC (char *, short *, long *);
#pragma FUNCTION XCOBFUNC (cobol)
這是我的Makefile：
CC=/usr/bin/c89
ELD=/usr/bin/eld
RM=rm -f
CFLAGS= -g -I $(JAVA_HOME)/include -I $(JAVA_HOME)/include/oss -I /G/system/system -I./include -Wallow_cplusplus_comments \
-Wextensions -D_XOPEN_SOURCE_EXTENDED=1 -Wnowarn=141,209,1506,262 \
-Wcall_shared -Wsystype=oss -Wtarget=tns/e -Wmap -Wverbose
#LDFLAGS = -set floattype IEEE_float -set SYSTYPE OSS -set HIGHPIN ON \
# -set CPlusPlusDialect neutral -dll -m -verbose \
# -l zcobdll -lcre -lcrtl -export_all
LDFLAGS = -set floattype IEEE_float -set SYSTYPE OSS -set HIGHPIN ON \
-set CPlusPlusDialect neutral -dll -m -verbose \
-lcre -lcrtl -l zcobdll -export_all
ALL = libhello.so
.SUFFIXES: .java .class .h .c .o
.c.o:
$(CC) $(CFLAGS) -c $<
all: $(ALL)
clean:
@$(RM) *.o *.so
HelloJNI.o: cobincl.h HelloJNI.h HelloJNI.c
libhello.so: HelloJNI.o XCOBFUNC.o
$(ELD) HelloJNI.o XCOBFUNC.o -o libhello.so $(LDFLAGS)
這是我的Java代碼：
public class HelloJNI {
static {
System.loadLibrary("hello"); // Load native library at runtime
// hello.dll (Windows) or libhello.so (Unixes)
}
public HelloJNI() {
}
public void sendToC() {
int par1 = 5;
String name = "Test";
short temp = sayHello(par1, name);
System.out.println("temp = " + temp);
}
// Declare a native method sayHello() that receives nothing and returns void
private native short sayHello(int par1, String name);
//private native String sayHello(int par1, String name, String[] tokensKeys, String[] tokensValues);
// Test Driver
public static void main(String[] args) {
//new HelloJNI().sayHello(); // invoke the native method
HelloJNI myObject = new HelloJNI();
myObject.sendToC();
}
}
我很感謝您的幫助，如果有人可以向我展示有關如何通過JNI C程序java如何在HP Tandem Non-Stop上調用Cobol程序的示例，我將非常感謝。
Please see from compilation process:
File: /usr/local/home/urily/Java_C_COBOL/c/libcobol.so
Segment(Read/Write/Execute) Address Size
---------------------------------------------------------------------------
text(Read/Execute) 0x0000000078000000 0x00002000
File: libhello.so
Segment(Read/Write/Execute)
Section Address Size
---------------------------------------------------------------------------
text(Read/Execute) 0x0000000078000000 0x00001000
.tandem_info 0x0000000078000190 0x00000198
.lic 0x0000000078000328 0x00000188
.dynamic 0x00000000780004b0 0x00000150
.liblist 0x0000000078000600 0x00000020
.dynstr2 0x0000000078000620 0x00000032
.IA_64.unwind 0x0000000078000658 0x00000048
.IA_64.unwind_info 0x00000000780006a0 0x00000018
.IA_64.unwind.strings 0x00000000780006b8 0x0000004a
.rconst 0x0000000078000710 0x00000030
.plt 0x0000000078000740 0x00000020
.text 0x0000000078000780 0x00000080
.hash 0x0000000078000800 0x000000dc
.dynsym 0x00000000780008e0 0x00000360
.dynstr 0x0000000078000c40 0x000001bd
.hashval 0x0000000078000e00 0x00000090
.rela.dyn 0x0000000078000e90 0x00000030
我看到libhello.so和libcobol.so的段具有相同的地址0x0000000078000000。 我通過兩個步驟手動創建了libcobol.so：
由於現在它們具有相同的地址，您如何創建具有不同地址的文本段？
在我的hs_err_pid.log下面
#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=fffffffff2667174, pid=620757215, tid=4
#
# JRE version: 6.0
# Java VM: Java HotSpot(TM) Server VM (16.3-b01-svcnedccadmin:2011apr20-08:12 mixed mode nsk oss-ia64 )
# Problematic frame:
# C [(DLL zcrtldll)+0x0] printf + 0xF0 (DLL zcrtldll)+0x0
#
# Please report this error to HP customer support.
#
--------------- T H R E A D ---------------
Current thread (8330800): JavaThread "main" [_thread_in_native, id=4, stack(809e000,81a1400)]
Frame 0: __stdio_fp + 0x171 (DLL zcrtldll)
pc : 0xfffffffff2667171
ra : 0xfffffffff26d6bf0
sp : 0x081a0510
psp : 0x081a0540
cfm : 0x0000020c sol(ins+locals)=4, sof(ins+locals+outs)=12, sor=0
bsp : 0x081a1a10
fpsr : 0x9804c8a74433f
pr : 0x00008cbd
br[0] : 0xfffffffff26d6bf0
br[1] : 0x640303a0
br[2] : 0x00000000
br[3] : 0x00000000
br[4] : 0x00000000
br[5] : 0x00000000
br[6] : 0xfffffffff26d6b00
br[7] : 0xfffffffff90babc0
lc : 0x00000000
ec : 0x00000000
gr0 : 0x00000000 0
gr1 : 0x6cec84b0 1827439792
gr2 : 0x6cec8608 1827440136
gr3 : 0x7de00010 2111832080
gr4 : 0x6cec84b0 1827439792
gr5 : 0x081a0908 135923976
gr6 : 0x080a2000 134881280
gr7 : 0x0829e800 136964096
gr8 : 0x64011640 1677792832
gr9 : 0x00000008 8
gr10 : 0x08330800 137562112
gr11 : 0x00000000 0
gr12 : 0x081a0510 135922960
gr13 : 0xe0000002300009b6 -2305842999818450506
gr14 : 0x7de00010 2111832080
gr15 : 0x7de00028 2111832104
gr16 : 0xfffffffff26d6b00 -227710208
gr17 : 0x00000000 0
gr18 : 0x00000000 0
gr19 : 0x00000000 0
gr20 : 0x7dde01e0 2111701472
gr21 : 0x081a0870 135923824
gr22 : 0x081a0878 135923832
gr23 : 0x081a2038 135929912
gr24 : 0x7dde0100 2111701248
gr25 : 0x7dde0100 2111701248
gr26 : 0x8000000000000000 -9223372036854775808
gr27 : 0x6cf24918 1827817752
gr28 : 0x0000000c 12
gr29 : 0x00000001 1
gr30 : 0x00000000 0
gr31 : 0x00000000 0
gr32 : 0x00000001 1
gr33 : 0xc00000000000050d -4611686018427386611
gr34 : 0xfffffffff26d6bf0 -227709968
gr35 : 0x6cec84b0 1827439792
gr36 : 0x081a0800 135923712
gr37 : 0x8330fcc00000000 590833344963411968
gr38 : 0x081a08b4 135923892
gr39 : 0x0c6221a8 207757736
gr40 : 0x64099e10 1678351888
gr41 : 0x7eec9bb0 2129435568
gr42 : 0x08325fa0 137519008
gr43 : 0x08325fa0 137519008
fr1 : (0x0ffff,0x8000000000000000) 1
Stack: [809e000,81a1400], sp=81a0540, free space=%pk
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C [(DLL zcrtldll)+0x0] printf + 0xF0 (DLL zcrtldll)+0x0
Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
j HelloJNI.sayHello()V+0
j HelloJNI.main([Ljava/lang/String;)V+7
v ~StubRoutines::call_stub
--------------- P R O C E S S ---------------
Java Threads: ( => current thread )
106de800 JavaThread "Low Memory Detector" daemon [_thread_blocked, id=12, stack(10a69000,10aa8800)]
106da200 JavaThread "CompilerThread1" daemon [_thread_blocked, id=10, stack(10965000,109e4800)]
1059b600 JavaThread "CompilerThread0" daemon [_thread_blocked, id=9, stack(10861800,108e1000)]
106d4800 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=8, stack(107e0000,1081f800)]
106b4000 JavaThread "Finalizer" daemon [_thread_blocked, id=7, stack(1075e000,1079d800)]
1062c400 JavaThread "Reference Handler" daemon [_thread_blocked, id=6, stack(1062f800,1066f000)]
=>8330800 JavaThread "main" [_thread_in_native, id=4, stack(809e000,81a1400)]
Other Threads:
105a6800 VMThread [stack: 105a9000,105e8800] [id=5]
106c2e00 WatcherThread [stack: 803c800,804c000] [id=11]
VM state: not at safepoint (normal execution)
VM Mutex/Monitor currently owned by a thread: None
Heap
def new generation total 3712K, used 228K [8450000, 8850000, 99a0000)
eden space 3328K, 6% used [8450000, 8489150, 8790000)
from space 384K, 0% used [8790000, 8790000, 87f0000)
to space 384K, 0% used [87f0000, 87f0000, 8850000)
tenured generation total 8192K, used 0K [99a0000, a1a0000, c450000)
the space 8192K, 0% used [99a0000, 99a0000, 99a0100, a1a0000)
compacting perm gen total 65536K, used 1865K [c450000, 10450000, 10450000)
the space 65536K, 2% used [c450000, c6225a0, c622600, 10450000)
No shared spaces configured.
VM Arguments:
java_command: HelloJNI
Launcher Type: SUN_STANDARD
Environment Variables:
JAVA_HOME=/usr/tandem/java
PATH=/bin:/bin/unsupported:/usr/bin:/usr/ucb:/usr/tandem/java/bin:/usr/tandem/javaexth10/bin:/usr/tandem/sqlmx/bin:/usr/tandem/java/jre/bin:/usr/tandem/jdbcMx/current/bin:/usr/oracle/ggs:/usr/tandem/nssoap/t0865h01_AAX/tools:.:
SHELL=/bin/sh
--------------- S Y S T E M ---------------
OS:uname:NONSTOP_KERNEL dnb1 J06 19 NSE-W
CPU:total 1
Memory: 4k page, physical 0k
vm_info: Java HotSpot(TM) Server VM (16.3-b01-svcnedccadmin:2011apr20-08:12) for nsk oss-ia64 JRE (1.6.0), built on Apr 20 2011 09:18:56 by "svcnedccadmin" with c89
time: Mon May 9 18:51:12 2016
elapsed time: 1 seconds
我不知道什么是串聯：ecobol，我的gnucobol示例有效：
調用COBOL.java：
class CallingCOBOL {
private native void adaptor(String from_java);
public static void main(String[] args) {
new CallingCOBOL().adaptor("Hello world!");
}
static {
System.loadLibrary("adaptor");
}
}
Adaptor.c：
#include "dlfcn.h"
#include "jni.h"
#include "libcob.h"
#include "adaptor.h"
#include "stdio.h"
JNIEXPORT void JNICALL Java_CallingCOBOL_adaptor(JNIEnv * env, jobject obj, jstring string_from_java) {
cob_init(0, NULL);
void * sub_cob;
sub_cob = dlopen("./libsub-cob.so", RTLD_NOW);
if (!sub_cob) {
puts("error no lib found");
return;
}
puts("lib loaded");
void(*proc_cob)(char*) = (void(*)(char*))dlsym(sub_cob, "proc__cob");
if (proc_cob) {
printf("proc addr is %p\n", proc_cob);
} else {
puts("proc addr is null");
}
const char *temp = (*env)->GetStringUTFChars(env, string_from_java, 0);
puts("took string from java environment");
proc_cob(temp);
puts("cobol proc run ok");
(*env)->ReleaseStringUTFChars(env, string_from_java, 0);
dlclose(sub_cob);
return;
}
sub-cob.cbl：
identification division.
program-id. sub-cob.
environment division.
configuration section.
data division.
working-storage section.
01 temp-string pic x(20) based.
01 pchar usage pointer.
01 my-string pic x(20).
linkage section.
01 string-from-java pic x(20).
procedure division.
sub-cob section.
goback.
entry "proc-cob" using by reference string-from-java.
display "entry proc-cob".
set pchar to address of string-from-java.
display "pchar set".
set address of temp-string to pchar.
display "temp-string set"
string temp-string delimited by x"00" into my-string.
display "my-string set".
display my-string.
goback.
生成文件：
default:
javac CallingCOBOL.java;
javah CallingCOBOL;
mv CallingCOBOL.h adaptor.h;
gcc -shared -fPIC adaptor.c -I/usr/java/jdk1.8.0_92/include/linux -I/usr/java/jdk1.8.0_92/include -lcob -olibadaptor.so;
cobc sub-cob.cbl -free -olibsub-cob.so;
clean:
rm CallingCOBOL.class;
rm adaptor.h;
rm libadaptor.so;
rm libsub-cob.so;
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