From patchwork Wed Jul 18 17:53:09 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: 28469 Received: (qmail 130398 invoked by alias); 18 Jul 2018 17:53:21 -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 130192 invoked by uid 89); 18 Jul 2018 17:53:19 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-26.2 required=5.0 tests=BAYES_00, FREEMAIL_FROM, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, KAM_SHORT, SPF_SOFTFAIL autolearn=ham version=3.3.2 spammy= X-HELO: mga07.intel.com From: "H.J. Lu" To: libc-alpha@sourceware.org Subject: [PATCH 4/5] Add a test for multiple setcontext calls Date: Wed, 18 Jul 2018 10:53:09 -0700 Message-Id: <20180718175310.5956-5-hjl.tools@gmail.com> In-Reply-To: <20180718175310.5956-1-hjl.tools@gmail.com> References: <20180718175310.5956-1-hjl.tools@gmail.com> Check multiple setcontext calls. * stdlib/Makefile ((tests): Add tst-setcontext5. * stdlib/tst-setcontext5.c: New file. --- stdlib/Makefile | 3 +- stdlib/tst-setcontext5.c | 88 ++++++++++++++++++++++++++++++++++++++++ 2 files changed, 90 insertions(+), 1 deletion(-) create mode 100644 stdlib/tst-setcontext5.c diff --git a/stdlib/Makefile b/stdlib/Makefile index 75021e6897..5861f6f5e0 100644 --- a/stdlib/Makefile +++ b/stdlib/Makefile @@ -85,7 +85,8 @@ tests := tst-strtol tst-strtod testmb testrand testsort testdiv \ 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-swapcontext1 tst-swapcontext2 tst-setcontext4 + tst-swapcontext1 tst-swapcontext2 tst-setcontext4 \ + tst-setcontext5 tests-internal := tst-strtod1i tst-strtod3 tst-strtod4 tst-strtod5i \ tst-tls-atexit tst-tls-atexit-nodelete diff --git a/stdlib/tst-setcontext5.c b/stdlib/tst-setcontext5.c new file mode 100644 index 0000000000..7dcc15cb8e --- /dev/null +++ b/stdlib/tst-setcontext5.c @@ -0,0 +1,88 @@ +/* Check multiple setcontext 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 +#include + +static ucontext_t ctx[2]; +static volatile int done; + +static void f2 (void); + +static void +__attribute__ ((noinline, noclone)) +f1 (void) +{ + printf ("start f1\n"); + f2 (); +} + +static void +__attribute__ ((noinline, noclone)) +f2 (void) +{ + printf ("start f2\n"); + if (setcontext (&ctx[1]) != 0) + { + printf ("%s: setcontext: %m\n", __FUNCTION__); + exit (EXIT_FAILURE); + } +} + +static void +f3 (void) +{ + printf ("start f3\n"); + if (done) + exit (EXIT_SUCCESS); + done = 1; + if (setcontext (&ctx[0]) != 0) + { + printf ("%s: setcontext: %m\n", __FUNCTION__); + exit (EXIT_FAILURE); + } +} + +static int +do_test (void) +{ + char st1[32768]; + + puts ("making contexts"); + if (getcontext (&ctx[0]) != 0) + { + printf ("%s: getcontext: %m\n", __FUNCTION__); + exit (EXIT_FAILURE); + } + if (getcontext (&ctx[1]) != 0) + { + printf ("%s: getcontext: %m\n", __FUNCTION__); + exit (EXIT_FAILURE); + } + ctx[1].uc_stack.ss_sp = st1; + ctx[1].uc_stack.ss_size = sizeof st1; + ctx[1].uc_link = &ctx[0]; + makecontext (&ctx[1], (void (*) (void)) f3, 0); + f1 (); + puts ("FAIL: returned from f1 ()"); + exit (EXIT_FAILURE); +} + +#include