[英]JNI code crash with core dump when throw is called under 64 bit
我正在使用java + c ++(使用JNI)工作,我必須加載自己的本機庫,但是調用throw時應用程序由於核心轉儲而失敗,盡管該代碼被異常處理程序包圍(請參見下面的代碼)。 這是在linux 64位,sparc 64位和i386 32位上正常工作的相同代碼。
嘗試在intel SunO上的Java 8下運行應用程序時出現問題。
標志-m64已添加到Makefile,庫已添加到LD_PRELOAD_64,並且LD_LIBRARY_PATH_64已正確設置。
Java啟動成功加載庫並運行本機代碼(Java_com_jnetx_usw_chp_CHPMain_start)並在拋出時崩潰:
INF:17:59:33.20:CHP main(27): CHPMain.run: ok load chp library. Start it...
NOT:17:59:33.22:CHP main(27): CHPMain.run: -> chp.start
Wed Nov 8 17:59:34 CHP::startTest : cycle = 1
Wed Nov 8 17:59:35 CHP::startTest : cycle = 2
Wed Nov 8 17:59:35 Try cause Exception...
#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x0000000000012ab5, pid=10081, tid=0x0000000000000026
#
# JRE version: Java(TM) SE Runtime Environment (8.0_121-b13) (build 1.8.0_121-b13)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.121-b13 mixed mode solaris-amd64 compressed oops)
# Problematic frame:
# C 0x0000000000012ab5
#
# Core dump written. Default location: /home/kcc_64/x2001/bin/core or core.10081
#
# An error report file with more information is saved as:
# /home/kcc_64/x2001/bin/hs_err_pid10081.log
#
# If you would like to submit a bug report, please visit:
# http://bugreport.java.com/bugreport/crash.jsp
#
本機代碼
JNIEXPORT void JNICALL Java_com_jnetx_usw_chp_CHPMain_start
(JNIEnv *env, jobject jobj, jint trc_level,jobjectArray j_argv,jobject chp_main,jobject chp_smp)
{
chp = new CHP();
chp->startTest();
}
void CHP::startTest() {
int t = 1;
while (true) {
try {
poll(NULL, 0, 1000);
fprintf(stderr, "%s CHP::startTest : cycle = %d\n", getTime(), t++);
if ( 3 == t ) {
fprintf(stderr, "%s : Try generate Exception... \n", getTime());
throw 20;
}
}
catch (const int & e) {
fprintf(stderr, "%s : Catch, e = %d\n", getTime(), e);
break;
}
catch (...) {
fprintf(stderr, "%s : Catch unknown exception...\n", getTime());
break;
}
}
fprintf(stderr, "%s : CHP::startTest : End thread, exit\n", getTime());
}
為什么忽略catch塊,然后立即轉到以核心轉儲結尾的系統信號處理程序(請參見下面的pstack)?
-bash-3.00 $ uname -a SunOS x2001 5.10 Generic_142910-17 i86pc i386 i86pc -bash-3.00 $ pstack core
-bash-3.00 $ gcc --version gcc(GCC)4.4.2版權所有(C)2009自由軟件基金會,公司。 請參閱復制條件的來源。 沒有保修; 甚至不是出於適銷性或針對特定目的的適用性。
pflags core
/38: flags = DETACH
sigmask = 0xfffffeff,0x0000ffff cursig = SIGABRT
pstack core
fffffd7fff291aea _lwp_kill () + a
fffffd7fff236c39 raise () + 19
fffffd7fff215bb0 abort () + 90
...
fffffd7ffe9d0343 JVM_handle_solaris_signal () + 8d7
fffffd7ffe9c8617 signalHandler () + 2f
fffffd7fff28c2e6 __sighndlr () + 6
fffffd7fff280bc2 call_user_handler () + 252
fffffd7fff280dee sigacthandler (b, fffffd7f7e2f5208, fffffd7f7e2f4ea0) + ee
--- called from signal handler with signal 11 (SIGSEGV) ---
0000000000013dd5 ???????? () + 28000d930d5
fffffd7fff2904d9 _SUNW_Unwind_RaiseException () + 46
fffffd7f7dea2c53 __cxa_throw () + 9b !!!!!!!!!
fffffd7f7f213310 _ZN3CHP9startTestEv () + 190
fffffd7fee215a14 * com/jnetx/usw/chp/CHPMain.start(I[Ljava/lang/String;Lcom/jnetx/usw/chp/CHPMain;Lcom/jnetx/usw/chp/CHPSmp;)V+0
fffffd7fee2083b6 * com/jnetx/usw/chp/CHPMain.run([Ljava/lang/String;Lcom/jnetx/usw/chp/CHPUpdateListener;)V+563 (line 377)
fffffd7fee2083b6 * com/jnetx/usw/chp/CHPProvider$1.run()V+20 (line 374)
fffffd7fee2007a7 * com/jnetx/usw/chp/CHPProvider$1.run()V+17760
fffffd7ffe4c10ff __1cJJavaCallsLcall_helper6FpnJJavaValue_pnMmethodHandle_pnRJavaCallArguments_pnGThread__v_ () + 8d7
fffffd7ffe4bcd3c __1cJJavaCallsMcall_virtual6FpnJJavaValue_nLKlassHandle_pnGSymbol_5pnRJavaCallArguments_pnGThread__v_ () + 424
fffffd7ffe4bd124 __1cJJavaCallsMcall_virtual6FpnJJavaValue_nGHandle_nLKlassHandle_pnGSymbol_6pnGThread__v_ () + 60
fffffd7ffe64030c __1cMthread_entry6FpnKJavaThread_pnGThread__v_ () + b8
fffffd7ffebd9679 __1cKJavaThreadDrun6M_v_ () + 5e1
fffffd7ffe9bdc85 java_start () + 175
fffffd7fff28bfbb _thr_setup () + 5b
fffffd7fff28c1e0 _lwp_start ()
該問題已解決:
這兩個之間存在一個已知問題,即ABI略有不匹配(libgcc_s.so:_Unwind_RaiseException和Solaris libc.so:_Unwind_RaiseException)。 將符號綁定到GCC運行時首先會導致它在Solaris運行時之前被加載,並且一切正常。 但是,僅將其顯式添加到我們的共享庫鏈接行中無濟於事。
所以我的簡單解決方法對我有幫助:
LD_PRELOAD=/usr/sfw/lib/amd64/libgcc_s.so
主要原因是在gcc的版本中,我使用的是4.4,但在4.9中進行了修復-在64位Solaris 10 + / x86上混合libc和libgcc_s展開器會破壞EH https://gcc.gnu.org/bugzilla /show_bug.cgi?id=59788
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