From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 3425 invoked by alias); 3 Dec 2013 07:34:20 -0000 Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org Received: (qmail 3415 invoked by uid 89); 3 Dec 2013 07:34:19 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=3.2 required=5.0 tests=AWL,BAYES_50,GARBLED_BODY,RDNS_NONE,URIBL_BLOCKED autolearn=no version=3.3.2 X-HELO: relay1.mentorg.com Received: from Unknown (HELO relay1.mentorg.com) (192.94.38.131) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Tue, 03 Dec 2013 07:34:17 +0000 Received: from svr-orw-exc-10.mgc.mentorg.com ([147.34.98.58]) by relay1.mentorg.com with esmtp id 1VnkUc-00075z-3T from Yao_Qi@mentor.com for gdb-patches@sourceware.org; Mon, 02 Dec 2013 23:34:02 -0800 Received: from SVR-ORW-FEM-04.mgc.mentorg.com ([147.34.97.41]) by SVR-ORW-EXC-10.mgc.mentorg.com with Microsoft SMTPSVC(6.0.3790.4675); Mon, 2 Dec 2013 23:34:02 -0800 Received: from qiyao.dyndns.org (147.34.91.1) by svr-orw-fem-04.mgc.mentorg.com (147.34.97.41) with Microsoft SMTP Server id 14.2.247.3; Mon, 2 Dec 2013 23:34:01 -0800 Message-ID: <529D890E.6040401@codesourcery.com> Date: Tue, 03 Dec 2013 07:34:00 -0000 From: Yao Qi User-Agent: Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20130110 Thunderbird/17.0.2 MIME-Version: 1.0 To: Subject: Re: [PATCH 3/3] Perf test case: skip-prologue References: <1385735051-27558-1-git-send-email-yao@codesourcery.com> <1385735051-27558-4-git-send-email-yao@codesourcery.com> In-Reply-To: <1385735051-27558-4-git-send-email-yao@codesourcery.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-IsSubscribed: yes X-SW-Source: 2013-12/txt/msg00068.txt.bz2 On 11/29/2013 10:24 PM, Yao Qi wrote: > This patch add a perf test case on skip-prologue by inserting > breakpoints on two functions many times, in order to exercise > skip-prologue. > > gdb/testsuite: > > 2013-11-29 Yao Qi > > * gdb.perf/skip-prologue.c: New. > * gdb.perf/skip-prologue.exp: New. > * gdb.perf/skip-prologue.py: New. I update this test case to allow setting the number of iterations by make check-perf RUNTESTFLAGS='skip-prologue.exp SKIP_PROLOGUE_COUNT=500' -- Yao (齐尧) gdb/testsuite: 2013-12-03 Yao Qi * gdb.perf/skip-prologue.c: New. * gdb.perf/skip-prologue.exp: New. * gdb.perf/skip-prologue.py: New. --- gdb/testsuite/gdb.perf/skip-prologue.c | 48 +++++++++++++++++++++ gdb/testsuite/gdb.perf/skip-prologue.exp | 69 ++++++++++++++++++++++++++++++ gdb/testsuite/gdb.perf/skip-prologue.py | 40 +++++++++++++++++ 3 files changed, 157 insertions(+), 0 deletions(-) create mode 100644 gdb/testsuite/gdb.perf/skip-prologue.c create mode 100644 gdb/testsuite/gdb.perf/skip-prologue.exp create mode 100644 gdb/testsuite/gdb.perf/skip-prologue.py diff --git a/gdb/testsuite/gdb.perf/skip-prologue.c b/gdb/testsuite/gdb.perf/skip-prologue.c new file mode 100644 index 0000000..a195f55 --- /dev/null +++ b/gdb/testsuite/gdb.perf/skip-prologue.c @@ -0,0 +1,48 @@ +/* This testcase is part of GDB, the GNU debugger. + + Copyright (C) 2013 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . */ + +/* GDB will analyze the prologue of functions f1 and f2. */ + +struct foo +{ + int a[32]; +}; + +static int +f1 (void) +{ + return 0; +} + +static double +f2 (int a, long long b, double c, struct foo f) +{ + f.a[0] = a + (int) b + c; + + return c + 0.2; +} + +int +main (void) +{ + struct foo f; + + f1 (); + f2 (0, 0, 0.1, f); + + return 0; +} diff --git a/gdb/testsuite/gdb.perf/skip-prologue.exp b/gdb/testsuite/gdb.perf/skip-prologue.exp new file mode 100644 index 0000000..53ada49 --- /dev/null +++ b/gdb/testsuite/gdb.perf/skip-prologue.exp @@ -0,0 +1,69 @@ +# Copyright (C) 2013 Free Software Foundation, Inc. + +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This program 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 General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +# This test case is to test the performance of GDB when it analyzes the +# function prologue. +# There is one parameter in this test: +# - SKIP_PROLOGUE_COUNT is the number that GDB inserts breakpoints on +# function f1 and f2 and removes them. + +load_lib perftest.exp + +if [skip_perf_tests] { + return 0 +} + +standard_testfile .c +set executable $testfile +set expfile $testfile.exp + +# make check-perf RUNTESTFLAGS='skip-prologue.exp SKIP_PROLOGUE_COUNT=500' +if ![info exists SKIP_PROLOGUE_COUNT] { + set SKIP_PROLOGUE_COUNT 500 +} + +PerfTest::assemble { + global srcdir subdir srcfile binfile + + if { [gdb_compile "$srcdir/$subdir/$srcfile" ${binfile} executable {debug}] != "" } { + return -1 + } + + return 0 +} { + global binfile + global gdb_prompt + + clean_restart $binfile + + if ![runto_main] { + fail "Can't run to main" + return -1 + } +} { + global SKIP_PROLOGUE_COUNT + + set test "run" + gdb_test_multiple "python SkipPrologue\($SKIP_PROLOGUE_COUNT\).run()" $test { + -re "Breakpoint $decimal at \[^\n\]*\n" { + # GDB prints some messages on breakpoint creation. + # Consume the output to avoid internal buffer full. + exp_continue + } + -re ".*$gdb_prompt $" { + pass $test + } + } +} diff --git a/gdb/testsuite/gdb.perf/skip-prologue.py b/gdb/testsuite/gdb.perf/skip-prologue.py new file mode 100644 index 0000000..a1c5e11 --- /dev/null +++ b/gdb/testsuite/gdb.perf/skip-prologue.py @@ -0,0 +1,40 @@ +# Copyright (C) 2013 Free Software Foundation, Inc. + +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This program 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 General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +# This test case is to test the speed of GDB when it is analyzing the +# function prologue. + +from perftest import perftest + +class SkipPrologue(perftest.TestCaseWithBasicMeasurements): + def __init__(self, count): + super(SkipPrologue, self).__init__("skip-prologue") + self.count = count + + def _test(self): + for i in range(1, self.count): + # Insert breakpoints on function f1 and f2. + bp1 = gdb.Breakpoint("f1") + bp2 = gdb.Breakpoint("f2") + # Remove them. + bp1.delete() + bp2.delete() + + def warm_up(self): + self._test() + + def execute_test(self): + for i in range(1, 4): + self.measure.measure(self._test, i) -- 1.7.7.6