From patchwork Wed Jul 25 11:54:58 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "H.J. Lu" X-Patchwork-Id: 28603 Received: (qmail 118440 invoked by alias); 25 Jul 2018 11:55:04 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Delivered-To: mailing list libc-alpha@sourceware.org Received: (qmail 118430 invoked by uid 89); 25 Jul 2018 11:55:03 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-26.8 required=5.0 tests=AWL, BAYES_00, FREEMAIL_FROM, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, KAM_SHORT, RCVD_IN_DNSWL_NONE, SPF_PASS autolearn=ham version=3.3.2 spammy= X-HELO: mail-pl0-f65.google.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=RYlpHpybv83YXZORaSHw/mHb00jrlOKhMqxwA5gtbb0=; b=e0T8PSjrw3pRVhEz5QPjz5Un1CxLiBzdJPZLZRV/u6zXjDOPuLdFZ9hJDbn/rTEnoQ bcP1Vmxh2XPWBVNYhcEdhdMbF0Nbc6YUe22PZJBOFri1TiVDOEzgeWyqn1qLWBQt+YLz 5F6a6HOa3mfU3p2VruHo8Ep+efjtDpGYsJU9hC5+AVMQhgzVtswYAOUc5LNUmHf6HyA8 kiZ5pmHm71DJGLm6phZ4C6xrwgJqBRu8yDn4D9ps7ZIvqHNFovNYTjn4oTOLbO0N8yu4 MdLYwSTxHTAy+jo3wU774u+FWjdXVjakVBCxrBcWQv9dlz2GozKM9XpdhlNAYMCN6C1u Dxcw== Return-Path: Date: Wed, 25 Jul 2018 04:54:58 -0700 From: "H.J. Lu" To: Carlos O'Donell Cc: "H.J. Lu" , libc-alpha@sourceware.org Subject: Re: [PATCH 09/12] Add a test for multiple makecontext calls Message-ID: <20180725115458.GB13278@gmail.com> References: <20180721142035.21059-1-hjl.tools@gmail.com> <20180721142035.21059-10-hjl.tools@gmail.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.0 (2018-05-17) On Tue, Jul 24, 2018 at 11:31:12PM -0400, Carlos O'Donell wrote: > On 07/21/2018 10:20 AM, H.J. Lu wrote: > > Check multiple makecontext calls. > > > > * stdlib/Makefile (tests): Add tst-swapcontext2. > > * stdlib/tst-swapcontext2.c: New test. > > OK for 2.28. > > Reviewed-by: Carlos O'Donell > This is what I checked in. H.J. --- From 8516ad2de3ae7c720370e06e7aa98d135b3c30eb Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Wed, 16 May 2018 12:28:19 -0700 Subject: [PATCH] Add a test for multiple makecontext calls Check multiple makecontext calls. * stdlib/Makefile (tests): Add tst-swapcontext1. * stdlib/tst-swapcontext1.c: New test. --- ChangeLog | 5 ++ stdlib/Makefile | 3 +- stdlib/tst-swapcontext1.c | 108 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 115 insertions(+), 1 deletion(-) create mode 100644 stdlib/tst-swapcontext1.c diff --git a/ChangeLog b/ChangeLog index d387465f29..18329df423 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,8 @@ +2018-07-25 H.J. Lu + + * stdlib/Makefile (tests): Add tst-swapcontext1. + * stdlib/tst-swapcontext1.c: New test. + 2018-07-25 H.J. Lu * sysdeps/x86/Makefile (tests): Add tst-cet-legacy-1, diff --git a/stdlib/Makefile b/stdlib/Makefile index b5e55b0a55..bc8929f2b9 100644 --- a/stdlib/Makefile +++ b/stdlib/Makefile @@ -84,7 +84,8 @@ tests := tst-strtol tst-strtod testmb testrand testsort testdiv \ tst-cxa_atexit tst-on_exit test-atexit-race \ test-at_quick_exit-race test-cxa_atexit-race \ test-on_exit-race test-dlclose-exit-race \ - tst-makecontext-align test-bz22786 tst-strtod-nan-sign + tst-makecontext-align test-bz22786 tst-strtod-nan-sign \ + tst-swapcontext1 tests-internal := tst-strtod1i tst-strtod3 tst-strtod4 tst-strtod5i \ tst-tls-atexit tst-tls-atexit-nodelete diff --git a/stdlib/tst-swapcontext1.c b/stdlib/tst-swapcontext1.c new file mode 100644 index 0000000000..7802df4868 --- /dev/null +++ b/stdlib/tst-swapcontext1.c @@ -0,0 +1,108 @@ +/* Check multiple makecontext calls. + Copyright (C) 2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include +#include +#include + +static ucontext_t uctx_main, uctx_func1, uctx_func2; +const char *str1 = "\e[31mswapcontext(&uctx_func1, &uctx_main)\e[0m"; +const char *str2 = "\e[34mswapcontext(&uctx_func2, &uctx_main)\e[0m"; +const char *fmt1 = "\e[31m"; +const char *fmt2 = "\e[34m"; + +#define handle_error(msg) \ + do { perror(msg); exit(EXIT_FAILURE); } while (0) + +__attribute__((noinline, noclone)) +static void +func4(ucontext_t *uocp, ucontext_t *ucp, const char *str, const char *fmt) +{ + printf(" %sfunc4: %s\e[0m\n", fmt, str); + if (swapcontext(uocp, ucp) == -1) + handle_error("swapcontext"); + printf(" %sfunc4: returning\e[0m\n", fmt); +} + +__attribute__((noinline, noclone)) +static void +func3(ucontext_t *uocp, ucontext_t *ucp, const char *str, const char *fmt) +{ + printf(" %sfunc3: func4(uocp, ucp, str)\e[0m\n", fmt); + func4(uocp, ucp, str, fmt); + printf(" %sfunc3: returning\e[0m\n", fmt); +} + +__attribute__((noinline, noclone)) +static void +func1(void) +{ + while ( 1 ) + { + printf(" \e[31mfunc1: func3(&uctx_func1, &uctx_main, str1)\e[0m\n"); + func3( &uctx_func1, &uctx_main, str1, fmt1); + } +} + +__attribute__((noinline, noclone)) +static void +func2(void) +{ + while ( 1 ) + { + printf(" \e[34mfunc2: func3(&uctx_func2, &uctx_main, str2)\e[0m\n"); + func3(&uctx_func2, &uctx_main, str2, fmt2); + } +} + +static int +do_test (void) +{ + char func1_stack[16384]; + char func2_stack[16384]; + int i; + + if (getcontext(&uctx_func1) == -1) + handle_error("getcontext"); + uctx_func1.uc_stack.ss_sp = func1_stack; + uctx_func1.uc_stack.ss_size = sizeof(func1_stack); + uctx_func1.uc_link = &uctx_main; + makecontext(&uctx_func1, func1, 0); + + if (getcontext(&uctx_func2) == -1) + handle_error("getcontext"); + uctx_func2.uc_stack.ss_sp = func2_stack; + uctx_func2.uc_stack.ss_size = sizeof(func2_stack); + uctx_func2.uc_link = &uctx_func1; + makecontext(&uctx_func2, func2, 0); + + for ( i = 0; i < 4; i++ ) + { + if (swapcontext(&uctx_main, &uctx_func1) == -1) + handle_error("swapcontext"); + printf(" \e[35mmain: swapcontext(&uctx_main, &uctx_func2)\n\e[0m"); + if (swapcontext(&uctx_main, &uctx_func2) == -1) + handle_error("swapcontext"); + printf(" \e[35mmain: swapcontext(&uctx_main, &uctx_func1)\n\e[0m"); + } + + printf("main: exiting\n"); + exit(EXIT_SUCCESS); +} + +#include