いかがでしたでしょうか
Spock を使って Java の単体試験などを書いている時に Java側のクラスの private なフィールドをいじりたい時があります。Groovy のソースなら特に問題ないですが、Java 側をいじりたいときは以下のようにします。
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ClassName.metaClass.setProperty(object,'field name',target) |
ClassName は操作対象となるクラス
Object は、操作するオブジェクト
field Name は操作するフィールド名
target は設定する値
を入れて下さい。
tomcat が、catalina.sh からだと起動できて、daemon.sh からだと起動できない。
最初に、apache-tomcat-9.0.0.M22 w/ jdk1.8.0_131 でやったけどだめで、
のパターンでもだめ。
osは、Linux version 2.6.32-696.6.3.el6.x86_64 (mockbuild@c1bl.rdu2.centos.org) (gcc version 4.4.7 20120313 (Red Hat 4.4.7-18) (GCC) ) #1 SMP Wed Jul 12
エラーは
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# # A fatal error has been detected by the Java Runtime Environment: # # SIGBUS (0x7) at pc=0x00007fd0aa0eb461, pid=31954, tid=140534257276672 # # JRE version: (7.0_80-b15) (build ) # Java VM: Java HotSpot(TM) 64-Bit Server VM (24.80-b11 mixed mode linux-amd64 compressed oops) # Problematic frame: # j java.lang.Object.<clinit>()V+0 # # Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again # # If you would like to submit a bug report, please visit: # http://bugreport.java.com/bugreport/crash.jsp # --------------- T H R E A D --------------- Current thread (0x0000000001fd8800): JavaThread "Unknown thread" [_thread_in_Java, id=31954, stack(0x00007fff4d754000,0x00007fff4d854000)] siginfo:si_signo=SIGBUS: si_errno=0, si_code=2 (BUS_ADRERR), si_addr=0x00007fff4d84bdf0 Registers: ...... RSP=0x00007fff4d850df0 is pointing into the stack for thread: 0x0000000001fd8800 RBP=0x00007fff4d850e30 is pointing into the stack for thread: 0x0000000001fd8800 RSI=0x00007fd0aa0eb360 is at code_begin+0 in an Interpreter codelet method entry point (kind = zerolocals) [0x00007fd0aa0eb360, 0x00007fd0aa0eb6a0] 832 bytes RDI=0x00007fff4d850ee0 is pointing into the stack for thread: 0x0000000001fd8800 R8 =0x00007fd0aa0eb360 is at code_begin+0 in an Interpreter codelet method entry point (kind = zerolocals) [0x00007fd0aa0eb360, 0x00007fd0aa0eb6a0] 832 bytes R9 =0x00007fff4d850fc8 is pointing into the stack for thread: 0x0000000001fd8800 R10=0x00007fd0aa0db45f is at begin+0 in a stub StubRoutines::call_stub [0x00007fd0aa0db45f, 0x00007fd0aa0db547[ (232 bytes) R11=0x00007fd0add35d40: <offset 0x601d40> in /opt/jdk1.7.0_80//jre/lib/amd64/server/libjvm.so at 0x00007fd0ad734000 R12=0x0000000000000000 is an unknown value R13=0x0000000750c02b20 is pointing into object: 0x0000000750c02ae0 {constMethod} - klass: {other class} - constants: 0x0000000750c01c78 constant pool [79] for 'java/lang/Object' cache=0x0000000750ca9ea8 bci_from(0x750c02b20) = 0; print_codes(): R14=0x00007fff4d850e38 is pointing into the stack for thread: 0x0000000001fd8800 R15=0x0000000001fd8800 is a thread Stack: [0x00007fff4d754000,0x00007fff4d854000], sp=0x00007fff4d850df0, free space=1011k Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code) j java.lang.Object.<clinit>()V+0 v ~StubRoutines::call_stub V [libjvm.so+0x6020a5] JavaCalls::call_helper(JavaValue*, methodHandle*, JavaCallArguments*, Thread*)+0x365 V [libjvm.so+0x600b08] JavaCalls::call(JavaValue*, methodHandle, JavaCallArguments*, Thread*)+0x28 V [libjvm.so+0x5c4f7a] instanceKlass::call_class_initializer(Thread*)+0xca V [libjvm.so+0x5c51d4] instanceKlass::initialize_impl(instanceKlassHandle, Thread*)+0x234 V [libjvm.so+0x5c562a] instanceKlass::initialize(Thread*)+0x6a V [libjvm.so+0x5c546b] instanceKlass::initialize_impl(instanceKlassHandle, Thread*)+0x4cb V [libjvm.so+0x5c562a] instanceKlass::initialize(Thread*)+0x6a V [libjvm.so+0x95dd62] Threads::create_vm(JavaVMInitArgs*, bool*)+0x402 V [libjvm.so+0x63b2e4] JNI_CreateJavaVM+0x74 ....... |
のようなエラー
答えは、ここ
起動パラメタに”-Xss2m”を追加した