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[PATCH 2/3] Test on single step
- From: Yao Qi <yao at codesourcery dot com>
- To: <gdb-patches at sourceware dot org>
- Date: Wed, 20 Nov 2013 10:50:59 +0800
- Subject: [PATCH 2/3] Test on single step
- Authentication-results: sourceware.org; auth=none
- References: <1384915860-8805-1-git-send-email-yao at codesourcery dot com>
gdb/testsuite/
* gdb.perf/single-step.c: New.
* gdb.perf/single-step.exp: New.
* gdb.perf/single-step.py: New.
---
gdb/testsuite/gdb.perf/single-step.c | 35 ++++++++++++++++++++
gdb/testsuite/gdb.perf/single-step.exp | 56 ++++++++++++++++++++++++++++++++
gdb/testsuite/gdb.perf/single-step.py | 35 ++++++++++++++++++++
3 files changed, 126 insertions(+), 0 deletions(-)
create mode 100644 gdb/testsuite/gdb.perf/single-step.c
create mode 100644 gdb/testsuite/gdb.perf/single-step.exp
create mode 100644 gdb/testsuite/gdb.perf/single-step.py
diff --git a/gdb/testsuite/gdb.perf/single-step.c b/gdb/testsuite/gdb.perf/single-step.c
new file mode 100644
index 0000000..2510c69
--- /dev/null
+++ b/gdb/testsuite/gdb.perf/single-step.c
@@ -0,0 +1,35 @@
+/* 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 <http://www.gnu.org/licenses/>. */
+
+volatile int flag = 1;
+
+int
+main (void)
+{
+ int i = 0;
+
+ while (flag)
+ {
+ double d;
+ float f;
+
+ i++;
+ d = i * 3.14;
+ f = d / 0.618;
+ }
+ return 0;
+}
diff --git a/gdb/testsuite/gdb.perf/single-step.exp b/gdb/testsuite/gdb.perf/single-step.exp
new file mode 100644
index 0000000..ffabbee
--- /dev/null
+++ b/gdb/testsuite/gdb.perf/single-step.exp
@@ -0,0 +1,56 @@
+# 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 <http://www.gnu.org/licenses/>.
+
+# This test case is to test the speed of GDB when it is doing singe step.
+# There is one parameter in this test:
+# - SINGLE_STEP_COUNT is the number of single step GDB performs.
+
+load_lib perftest.exp
+
+if [skip_perf_tests] {
+ return 0
+}
+
+standard_testfile .c
+set executable $testfile
+set expfile $testfile.exp
+
+# make check-perf RUNTESTFLAGS='single-step.exp SINGLE_STEP_COUNT=300'
+if ![info exists SINGLE_STEP_COUNT] {
+ set SINGLE_STEP_COUNT 10000
+}
+
+PerfTest::assemble {
+ global srcdir subdir srcfile binfile
+
+ if { [gdb_compile "$srcdir/$subdir/$srcfile" ${binfile} executable {debug}] != "" } {
+ return -1
+ }
+ return 0
+} {
+ global binfile
+ clean_restart $binfile
+
+ if ![runto_main] {
+ fail "Can't run to main"
+ return -1
+ }
+} {
+ global SINGLE_STEP_COUNT
+
+ gdb_test_no_output "python SingleStep\(${SINGLE_STEP_COUNT}\).run()"
+ # Terminate the loop.
+ gdb_test "set variable flag = 0"
+}
diff --git a/gdb/testsuite/gdb.perf/single-step.py b/gdb/testsuite/gdb.perf/single-step.py
new file mode 100644
index 0000000..7e6617e
--- /dev/null
+++ b/gdb/testsuite/gdb.perf/single-step.py
@@ -0,0 +1,35 @@
+# 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 <http://www.gnu.org/licenses/>.
+
+from perftest import perftest
+from perftest import measure
+
+class SingleStep (perftest.TestCaseWithBasicMeasurements):
+ def __init__(self, step):
+ super (SingleStep, self).__init__ ("single-step")
+ self.step = step
+
+ def warm_up(self):
+ for i in range(0, self.step):
+ gdb.execute("stepi", False, True)
+
+ def _run(self, r):
+ for j in range(0, r):
+ gdb.execute("stepi", False, True)
+
+ def execute_test(self):
+ for i in range(1, 5):
+ func = lambda: self._run(i * self.step)
+ self.measure.measure(func, i * self.step)
--
1.7.7.6