From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gproxy3-pub.mail.unifiedlayer.com (gproxy3-pub.mail.unifiedlayer.com [69.89.30.42]) by sourceware.org (Postfix) with ESMTPS id 8EBD13888825 for ; Fri, 18 Mar 2022 21:13:11 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 8EBD13888825 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=tromey.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=tromey.com Received: from cmgw10.mail.unifiedlayer.com (unknown [10.0.90.125]) by progateway5.mail.pro1.eigbox.com (Postfix) with ESMTP id 9AE1C1004829D for ; Fri, 18 Mar 2022 21:13:10 +0000 (UTC) Received: from box5379.bluehost.com ([162.241.216.53]) by cmsmtp with ESMTP id VJuInUSo7Qs3CVJuInaXHd; Fri, 18 Mar 2022 21:13:10 +0000 X-Authority-Reason: nr=8 X-Authority-Analysis: v=2.4 cv=d8AwdTvE c=1 sm=1 tr=0 ts=6234f5e6 a=ApxJNpeYhEAb1aAlGBBbmA==:117 a=ApxJNpeYhEAb1aAlGBBbmA==:17 a=dLZJa+xiwSxG16/P+YVxDGlgEgI=:19 a=o8Y5sQTvuykA:10:nop_rcvd_month_year a=Qbun_eYptAEA:10:endurance_base64_authed_username_1 a=ZxGhNnm9vJj_tofHrAgA:9 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=tromey.com; s=default; h=Content-Type:MIME-Version:Message-ID:In-Reply-To:Date:References :Subject:Cc:To:From:Sender:Reply-To:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=WKcDFMdDKQw0jtDjRrWrjQ4ZnT3NHPgedhAN+HPlA1s=; b=GHLoBWU/t3Ms6I09D27KumF+Tc nXp09VtjvCxi4iEFN2Mrv7LunhUxpXPTD01gN6RsUQNcsTt8JqHrCpP2++Yeritk/nIoqC0fxvtu5 d8WcPCR5E6l7LZ7uEqU7+lCxV; Received: from 71-211-175-224.hlrn.qwest.net ([71.211.175.224]:43178 helo=prentzel) by box5379.bluehost.com with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1nVJuH-000547-I8; Fri, 18 Mar 2022 15:13:09 -0600 From: Tom Tromey To: Stefan Hajnoczi Cc: Tom Tromey , gdb@sourceware.org, qemu-devel@nongnu.org, pedro@palves.net, "Dr. David Alan Gilbert" Subject: Re: How to backtrace an separate stack? References: <87mti11yy9.fsf@tromey.com> <87r174gtuv.fsf@tromey.com> X-Attribution: Tom Date: Fri, 18 Mar 2022 15:13:08 -0600 In-Reply-To: (Stefan Hajnoczi's message of "Tue, 15 Mar 2022 14:17:20 +0000") Message-ID: <87ee2zezh7.fsf@tromey.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - box5379.bluehost.com X-AntiAbuse: Original Domain - sourceware.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - tromey.com X-BWhitelist: no X-Source-IP: 71.211.175.224 X-Source-L: No X-Exim-ID: 1nVJuH-000547-I8 X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: 71-211-175-224.hlrn.qwest.net (prentzel) [71.211.175.224]:43178 X-Source-Auth: tom+tromey.com X-Email-Count: 2 X-Source-Cap: ZWx5bnJvYmk7ZWx5bnJvYmk7Ym94NTM3OS5ibHVlaG9zdC5jb20= X-Local-Domain: yes X-Spam-Status: No, score=-3024.5 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, JMQ_SPF_NEUTRAL, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2, SPF_HELO_NONE, SPF_PASS, TXREP, T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: gdb@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gdb mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Mar 2022 21:13:12 -0000 >> You can play with this if you want. It's on 'submit/green-threads' on >> my github. Be warned that I rebase a lot. Stefan> This looks cool! Would it be useful to see a port of QEMU's coroutine.py Stefan> script to your green threads API? Wouldn't hurt :) Stefan> QEMU's coroutines aren't in a scheduler list so there is no way to Stefan> enumerate all coroutines. The Python script can register a GDB command Stefan> (e.g. "qemu coroutine 0x12345678") that makes GDB aware of the Stefan> coroutine. On the one hand, maybe this means the model is wrong. On the other, I suppose qemu could also have a new command to create a temporary "thread", given a ucontext_t (or whatever), and switch to it. Then when the user "continue"s, the thread could be deleted again. Tom