From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 26403 invoked by alias); 4 Apr 2006 00:38:17 -0000 Received: (qmail 26377 invoked by alias); 4 Apr 2006 00:38:15 -0000 Date: Tue, 04 Apr 2006 00:38:00 -0000 Message-ID: <20060404003815.26376.qmail@sourceware.org> From: "hunt at redhat dot com" To: systemtap@sources.redhat.com In-Reply-To: <20060330093952.2497.guanglei@cn.ibm.com> References: <20060330093952.2497.guanglei@cn.ibm.com> Reply-To: sourceware-bugzilla@sourceware.org Subject: [Bug runtime/2497] STP_STRING_SIZE set by stap is too small X-Bugzilla-Reason: AssignedTo Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org X-SW-Source: 2006-q2/txt/msg00025.txt.bz2 ------- Additional Comments From hunt at redhat dot com 2006-04-04 00:38 ------- Subject: Re: STP_STRING_SIZE set by stap is too small On Mon, 2006-04-03 at 03:43 +0000, guanglei at cn dot ibm dot com wrote: > I can call print_backtrace() to print the backtrace, but in fact I > want to > combine the string of backtrace with other information to generate the > output of > a specific event, like the following: > > String str = _stp_string_init (0); > _stp_stack_sprint (str, CONTEXT->regs, 0); > _lket_trace(THIS->var_id, "%1b%4b%1b%ld%4b%4b%s", > cmd->device->sdev_state, > scsi_info, > cmd->sc_data_direction, cmd->request_buffer, > cmd->request_bufflen, > cmd->device->host->cmd_pid, _stp_string_ptr(str)); > > So what I want is a larger String obtained by _stp_string_init, while > keep all other strings used by stap the same as before. But aren't there just two possibilities? 1. You print the backtrace. 2. You get the backtrace in a string and save it in an array. For #1, you use print_backtrace. For #2, you need to have all strings be larger, as it is done now. In your example above, you would just write something like this in script: bin_write("%1b%4b%1b%ld%4b%4b", cmd->device->sdev_state, [...]) print_backtrace() Martin -- http://sourceware.org/bugzilla/show_bug.cgi?id=2497 ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee.