os::check_or_create_dump(...)
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//Linux版(jdk7/hotspot/src/os/posix/vm/os_posix.cpp) // Check core dump limit and report possible place where core can be found void os::check_or_create_dump(void* exceptionRecord, void* contextRecord, char* buffer, size_t bufferSize) { struct rlimit rlim; static char cwd[O_BUFLEN]; bool success; get_current_directory(cwd, sizeof(cwd)); if (getrlimit(RLIMIT_CORE, &rlim) != 0) { jio_snprintf(buffer, bufferSize, "%s/core or core.%d (may not exist)", cwd, current_process_id()); success = true; } else { switch(rlim.rlim_cur) { case RLIM_INFINITY: jio_snprintf(buffer, bufferSize, "%s/core or core.%d", cwd, current_process_id()); success = true; break; case 0: jio_snprintf(buffer, bufferSize, "Core dumps have been disabled. To enable core dumping, try \"ulimit -c unlimited\" before starting Java again"); success = false; break; default: jio_snprintf(buffer, bufferSize, "%s/core or core.%d (max size %lu kB). To ensure a full core dump, try \"ulimit -c unlimited\" before starting Java again", cwd, current_process_id(), (unsigned long)(rlim.rlim_cur >> 10)); success = true; break; } } VMError::report_coredump_status(buffer, success); }