From patchwork Wed May 20 18:12:20 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Florian Weimer X-Patchwork-Id: 39343 Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 98133393F850; Wed, 20 May 2020 18:12:35 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 98133393F850 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1589998355; bh=0uAq3NMeK6v64dLOxS9FSowFfsfQylb6BqPE1lB1Nxo=; h=To:Subject:Date:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:List-Subscribe:From:Reply-To:From; b=yC2tU4qUy7hnMoGwDVNHp5lpwqtI/XHK5k9OXxslkzUYwbZmqstord0SqZX1+pbr1 pgl7vL1D3HS8xRHjgV+RwLSDvVN2OxG0YyFtVIGTzPaQYUOyjtgUAaG/WwtP6fSHkD qofANcJwfi5b/KD0u9C2cRTLbkmDjB5/PHxsDxao= X-Original-To: libc-alpha@sourceware.org Delivered-To: libc-alpha@sourceware.org Received: from us-smtp-1.mimecast.com (us-smtp-1.mimecast.com [205.139.110.61]) by sourceware.org (Postfix) with ESMTP id 40C8A385DC32 for ; Wed, 20 May 2020 18:12:33 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 40C8A385DC32 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-2-yi6jLXwjPaCEcoxUw2rX6Q-1; Wed, 20 May 2020 14:12:23 -0400 X-MC-Unique: yi6jLXwjPaCEcoxUw2rX6Q-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 493CBBFC2 for ; Wed, 20 May 2020 18:12:22 +0000 (UTC) Received: from oldenburg2.str.redhat.com (ovpn-113-191.ams2.redhat.com [10.36.113.191]) by smtp.corp.redhat.com (Postfix) with ESMTPS id B950D82A2C for ; Wed, 20 May 2020 18:12:21 +0000 (UTC) To: libc-alpha@sourceware.org Subject: [PATCH 0/2] Add __libc_single_threaded Message-Id: Date: Wed, 20 May 2020 20:12:20 +0200 User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-Spam-Status: No, score=-9.0 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Florian Weimer via Libc-alpha From: Florian Weimer Reply-To: Florian Weimer Errors-To: libc-alpha-bounces@sourceware.org Sender: "Libc-alpha" This is another attempt at providing the __libc_single_threaded variable. With __libc_early_init, this becomes quite easy to implement. I removed to optimization for fork because it did not seem very important. Tested on x86_64-linux-gnu and i686-linux-gnu. Built with build-many-glibcs.py. Florian Weimer (2): Add the __libc_single_threaded variable manual: Document __libc_single_threaded NEWS | 6 + elf/Makefile | 33 +++- elf/libc_early_init.c | 4 + elf/tst-single_threaded-mod1.c | 25 +++ elf/tst-single_threaded-mod2.c | 25 +++ elf/tst-single_threaded-mod3.c | 25 +++ elf/tst-single_threaded-mod4.c | 25 +++ elf/tst-single_threaded-pthread-static.c | 86 +++++++++ elf/tst-single_threaded-pthread.c | 174 ++++++++++++++++++ elf/tst-single_threaded-static-dlopen.c | 56 ++++++ elf/tst-single_threaded-static.c | 29 +++ elf/tst-single_threaded.c | 70 +++++++ htl/pt-create.c | 5 + include/sys/single_threaded.h | 1 + manual/threads.texi | 89 +++++++++ misc/Makefile | 5 +- misc/Versions | 3 + misc/single_threaded.c | 27 +++ misc/sys/single_threaded.h | 33 ++++ nptl/pthread_create.c | 5 + sysdeps/generic/ldsodefs.h | 5 + sysdeps/generic/libc.abilist | 1 + sysdeps/mach/hurd/i386/libc.abilist | 1 + sysdeps/unix/sysv/linux/aarch64/libc.abilist | 1 + sysdeps/unix/sysv/linux/alpha/libc.abilist | 1 + sysdeps/unix/sysv/linux/arm/be/libc.abilist | 1 + sysdeps/unix/sysv/linux/arm/le/libc.abilist | 1 + sysdeps/unix/sysv/linux/csky/libc.abilist | 1 + sysdeps/unix/sysv/linux/hppa/libc.abilist | 1 + sysdeps/unix/sysv/linux/i386/libc.abilist | 1 + sysdeps/unix/sysv/linux/ia64/libc.abilist | 1 + .../sysv/linux/m68k/coldfire/libc.abilist | 1 + .../unix/sysv/linux/m68k/m680x0/libc.abilist | 1 + .../sysv/linux/microblaze/be/libc.abilist | 1 + .../sysv/linux/microblaze/le/libc.abilist | 1 + .../sysv/linux/mips/mips32/fpu/libc.abilist | 1 + .../sysv/linux/mips/mips32/nofpu/libc.abilist | 1 + .../sysv/linux/mips/mips64/n32/libc.abilist | 1 + .../sysv/linux/mips/mips64/n64/libc.abilist | 1 + sysdeps/unix/sysv/linux/nios2/libc.abilist | 1 + .../linux/powerpc/powerpc32/fpu/libc.abilist | 1 + .../powerpc/powerpc32/nofpu/libc.abilist | 1 + .../linux/powerpc/powerpc64/be/libc.abilist | 1 + .../linux/powerpc/powerpc64/le/libc.abilist | 1 + .../unix/sysv/linux/riscv/rv64/libc.abilist | 1 + .../unix/sysv/linux/s390/s390-32/libc.abilist | 1 + .../unix/sysv/linux/s390/s390-64/libc.abilist | 1 + sysdeps/unix/sysv/linux/sh/be/libc.abilist | 1 + sysdeps/unix/sysv/linux/sh/le/libc.abilist | 1 + .../sysv/linux/sparc/sparc32/libc.abilist | 1 + .../sysv/linux/sparc/sparc64/libc.abilist | 1 + .../unix/sysv/linux/x86_64/64/libc.abilist | 1 + .../unix/sysv/linux/x86_64/x32/libc.abilist | 1 + 53 files changed, 755 insertions(+), 8 deletions(-) create mode 100644 elf/tst-single_threaded-mod1.c create mode 100644 elf/tst-single_threaded-mod2.c create mode 100644 elf/tst-single_threaded-mod3.c create mode 100644 elf/tst-single_threaded-mod4.c create mode 100644 elf/tst-single_threaded-pthread-static.c create mode 100644 elf/tst-single_threaded-pthread.c create mode 100644 elf/tst-single_threaded-static-dlopen.c create mode 100644 elf/tst-single_threaded-static.c create mode 100644 elf/tst-single_threaded.c create mode 100644 include/sys/single_threaded.h create mode 100644 misc/single_threaded.c create mode 100644 misc/sys/single_threaded.h