From patchwork Tue Jul 23 04:42:20 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ian Lance Taylor X-Patchwork-Id: 260962 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from sourceware.org (server1.sourceware.org [209.132.180.131]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "localhost", Issuer "www.qmailtoaster.com" (not verified)) by ozlabs.org (Postfix) with ESMTPS id 3297A2C00C1 for ; Tue, 23 Jul 2013 14:42:39 +1000 (EST) DomainKey-Signature: a=rsa-sha1; c=nofws; d=gcc.gnu.org; h=list-id :list-unsubscribe:list-archive:list-post:list-help:sender:from :to:subject:date:message-id:mime-version:content-type; q=dns; s= default; b=xkmrKyn9sS0zf4qLaM3hvF6i5SU7al4+MrpPyL5MUDmlr8VQ7ZGC/ uWf+KN2ifeR5UJLt9dtokGJOm4a9lqYmlIj2Z5wPJkS63560iLmdMrqZchvnjPn/ iPUme7eyikS2yIg7pEceMpfH1UP3m94JdwnUXhRpus6v3xW+Ts6CdA= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=gcc.gnu.org; h=list-id :list-unsubscribe:list-archive:list-post:list-help:sender:from :to:subject:date:message-id:mime-version:content-type; s= default; bh=t96/XIWHJdEtSlHU0/zyS+Bjd3I=; b=u3/bL+F35ZuflkR2gLwt HbsPPOrXjmQhvRM9cszXWatWEt92hTneZOlQLeOXA2pSYFbcZYratnn0vYFrojh4 O1lGEvUhJFOyn0Om9gFzoLL3f7ahurVeULV/53A8zqje4S/xh23l0b587lozuGbM Aivk0FrZEHTLj7jFnkXnERM= Received: (qmail 7304 invoked by alias); 23 Jul 2013 04:42:31 -0000 Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org Delivered-To: mailing list gcc-patches@gcc.gnu.org Received: (qmail 7275 invoked by uid 89); 23 Jul 2013 04:42:31 -0000 X-Spam-SWARE-Status: No, score=-3.0 required=5.0 tests=AWL, BAYES_00, RCVD_IN_DNSWL_LOW, RCVD_IN_HOSTKARMA_YE, RDNS_NONE, SPF_PASS, T_TVD_MIME_NO_HEADERS autolearn=no version=3.3.1 Received: from Unknown (HELO mail-pa0-f53.google.com) (209.85.220.53) by sourceware.org (qpsmtpd/0.84/v0.84-167-ge50287c) with ESMTP; Tue, 23 Jul 2013 04:42:30 +0000 Received: by mail-pa0-f53.google.com with SMTP id lb1so1070727pab.40 for ; Mon, 22 Jul 2013 21:42:22 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=from:to:subject:date:message-id:user-agent:mime-version :content-type:x-gm-message-state; bh=Ciy6QMQmOrPOvul8NDPux3RYxKlgDpCzCMQEQFVw7R4=; b=UZW+V9xgkCqyTOpFqjqQrm/BFnlNC2THBO75QYNXZUZGbQiTtT0yzqW47xeQcvjz0l XO5hHm9rTKr/Lw4oEHvSjLFEf+sp6+jmL/6ici0+Egd3sV45cMf+X4Gjztz47wpmUUBD ODGyJ9c9Xr9oJrlkWbBp8nT/i637eqvql5qQPJSm/l1Nf1ZX4qXXDzJBpbC7aFShJW/g Rf2O1kvUndSf0L9yaaxlLo8CRd9asPHbAWKB5obw9SerqsEJXkSZ+gE27u4wb4ZkDCip Yk/nAzZnE80lxFP5XOc4g8Sxi7OuijZL9QVg73BUdVJTNTq1Su60+TRdZQKjkaWGEZbN ZB6A== X-Received: by 10.68.143.73 with SMTP id sc9mr34679751pbb.2.1374554542794; Mon, 22 Jul 2013 21:42:22 -0700 (PDT) Received: from iant-glaptop.roam.corp.google.com.google.com ([172.26.50.9]) by mx.google.com with ESMTPSA id w8sm37001054pab.12.2013.07.22.21.42.21 for (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Mon, 22 Jul 2013 21:42:22 -0700 (PDT) From: Ian Lance Taylor To: gcc-patches@gcc.gnu.org, gofrontend-dev@googlegroups.com Subject: libgo patch committed: Ignore SIGPROF on non-Go thread Date: Mon, 22 Jul 2013 21:42:20 -0700 Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.3 (gnu/linux) MIME-Version: 1.0 X-Gm-Message-State: ALoCoQl0Q7ts/Kjon8fj1fQHVGoeqL5Ca+HIbxKquuf/hR6wm4jJqcR1uJhpCg/F27dsh5ICgUMqmpLKYAgrn7NqhLoFxuErVMKO/nmbbq0Ke0JIjxkdgnBueX4N8rDIuY743odlZ0/aJdpWC03bdvveAdg0gjCMC10rje/U3jdEBxQJdkpydh8GImv6o4PkYzpRZuiOXo6CAwuQRDjdOIhBPoH2Ytl8EA== X-Virus-Found: No This patch to libgo ignores a SIGPROF signal if it is received on a non-Go thread. This permits the Go library profiling support to work in a program that calls C/C++ code that starts threads. Bootstrapped and ran Go testsuite on x86_64-unknown-linux-gnu. Committed to mainline and 4.8 branch. Ian diff -r f1650653ba7d libgo/runtime/go-signal.c --- a/libgo/runtime/go-signal.c Tue Jul 16 15:42:30 2013 -0700 +++ b/libgo/runtime/go-signal.c Mon Jul 22 21:39:43 2013 -0700 @@ -166,21 +166,22 @@ int i; m = runtime_m (); + +#ifdef SIGPROF + if (sig == SIGPROF) + { + if (m != NULL && gp != m->g0 && gp != m->gsignal) + runtime_sigprof (); + return; + } +#endif + if (m == NULL) { runtime_badsignal (sig); return; } -#ifdef SIGPROF - if (sig == SIGPROF) - { - if (gp != runtime_m ()->g0 && gp != runtime_m ()->gsignal) - runtime_sigprof (); - return; - } -#endif - for (i = 0; runtime_sigtab[i].sig != -1; ++i) { SigTab *t;