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authorYao Qi <yao@codesourcery.com>2013-11-22 17:00:57 +0800
committerYao Qi <yao@codesourcery.com>2013-12-15 16:16:10 +0800
commit07d100d43e70e856c802fec9b584f94c8efbd79d (patch)
tree157558ad1e508aa098e108eb90c76c24d3d9b7c4
parente7d27824a6fdb4d3868eec745c977b3b1fef287b (diff)
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Perf test case: skip-prologue
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: 2013-12-15 Yao Qi <yao@codesourcery.com> * gdb.perf/skip-prologue.c: New. * gdb.perf/skip-prologue.exp: New. * gdb.perf/skip-prologue.py: New.
-rw-r--r--gdb/testsuite/ChangeLog6
-rw-r--r--gdb/testsuite/gdb.perf/skip-prologue.c48
-rw-r--r--gdb/testsuite/gdb.perf/skip-prologue.exp69
-rw-r--r--gdb/testsuite/gdb.perf/skip-prologue.py42
4 files changed, 165 insertions, 0 deletions
diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index dbdc000..b9f98f7 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,9 @@
+2013-12-15 Yao Qi <yao@codesourcery.com>
+
+ * gdb.perf/skip-prologue.c: New.
+ * gdb.perf/skip-prologue.exp: New.
+ * gdb.perf/skip-prologue.py: New.
+
2013-12-13 Joel Brobecker <brobecker@adacore.com>
* gdb.ada/arraydim: New testcase.
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 <http://www.gnu.org/licenses/>. */
+
+/* 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 <http://www.gnu.org/licenses/>.
+
+# 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..0c71e43
--- /dev/null
+++ b/gdb/testsuite/gdb.perf/skip-prologue.py
@@ -0,0 +1,42 @@
+# 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 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 _ 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):
+ gdb.execute("set code-cache off")
+ gdb.execute("set code-cache on")
+ self.measure.measure(self._test, i)