StackOverflow2013

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copied!<p>Try to handle crash signals (SIGSEGV etc.) and send kill to yourself in signal handler. This trick helps me.</p> <p>Example:</p> <pre><code>#include <signal.h> #include <unistd.h> static void signal_handler(int signal, siginfo_t *info, void *reserved) { kill(getpid(),SIGKILL); } extern "C" jint JNI_OnLoad(JavaVM* vm, void* /*reserved*/) { struct sigaction handler; memset(&handler, 0, sizeof(handler)); handler.sa_sigaction = signal_handler; handler.sa_flags = SA_SIGINFO; sigaction(SIGILL, &handler, NULL); sigaction(SIGABRT, &handler, NULL); sigaction(SIGBUS, &handler, NULL); sigaction(SIGFPE, &handler, NULL); sigaction(SIGSEGV, &handler, NULL); sigaction(SIGSTKFLT, &handler, NULL); return(JNI_VERSION_1_6); } </code></pre> <p><strong>UPDATE2</strong></p> <p>if you want to see crashlog in android logcat you should use this signal handler</p> <pre><code>static void signal_handler(int signal, siginfo_t *info, void *reserved) { struct sockaddr_un addr; size_t namelen; socklen_t alen; int s, err; char name[] = "android:debuggerd"; namelen = strlen(name); // Test with length +1 for the *initial* '\0'. if ((namelen + 1) > sizeof(addr.sun_path)) { errno = EINVAL; return; } /* This is used for abstract socket namespace, we need * an initial '\0' at the start of the Unix socket path. * * Note: The path in this case is *not* supposed to be * '\0'-terminated. ("man 7 unix" for the gory details.) */ memset (&addr, 0, sizeof addr); addr.sun_family = AF_LOCAL; addr.sun_path[0] = 0; memcpy(addr.sun_path + 1, name, namelen); alen = namelen + offsetof(struct sockaddr_un, sun_path) + 1; s = socket(AF_LOCAL, SOCK_STREAM, 0); if(s < 0) return; RETRY_ON_EINTR(err,connect(s, (struct sockaddr *) &addr, alen)); if (err < 0) { close(s); s = -1; } pid_t tid = gettid(); if(s>=0) { /* debugger knows our pid from the credentials on the * local socket but we need to tell it our tid. It * is paranoid and will verify that we are giving a tid * that's actually in our process */ int ret; RETRY_ON_EINTR(ret, write(s, &tid, sizeof(unsigned))); if (ret == sizeof(unsigned)) { /* if the write failed, there is no point to read on * the file descriptor. */ RETRY_ON_EINTR(ret, read(s, &tid, 1)); //notify_gdb_of_libraries(); } close(s); } wait(NULL); kill(getpid(),SIGKILL); } </code></pre> <p>I took it from android source (can't insert link because android.git.kernel.org is down), but I am not sure that it will work in future Android releases</p>

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