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[RFC 3/3] Test on solib load and unload
- From: Yao Qi <yao at codesourcery dot com>
- To: <gdb-patches at sourceware dot org>
- Date: Wed, 28 Aug 2013 12:16:34 +0800
- Subject: [RFC 3/3] Test on solib load and unload
- Authentication-results: sourceware.org; auth=none
- References: <520B7F70 dot 6070207 at codesourcery dot com> <1377663394-4975-1-git-send-email-yao at codesourcery dot com>
This patch is to add a test case to on the performance of GDB handling
load and unload of shared library.
gdb/testsuite/
* gdb.perf/solib.c: New.
* gdb.perf/solib.exp: New.
* gdb.perf/solib.py: New.
---
gdb/testsuite/gdb.perf/solib.c | 79 ++++++++++++++++++++++++++++++++++
gdb/testsuite/gdb.perf/solib.exp | 86 ++++++++++++++++++++++++++++++++++++++
gdb/testsuite/gdb.perf/solib.py | 48 +++++++++++++++++++++
3 files changed, 213 insertions(+), 0 deletions(-)
create mode 100644 gdb/testsuite/gdb.perf/solib.c
create mode 100644 gdb/testsuite/gdb.perf/solib.exp
create mode 100644 gdb/testsuite/gdb.perf/solib.py
diff --git a/gdb/testsuite/gdb.perf/solib.c b/gdb/testsuite/gdb.perf/solib.c
new file mode 100644
index 0000000..948b286
--- /dev/null
+++ b/gdb/testsuite/gdb.perf/solib.c
@@ -0,0 +1,79 @@
+/* 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/>. */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#ifdef __WIN32__
+#include <windows.h>
+#define dlopen(name, mode) LoadLibrary (TEXT (name))
+#ifdef _WIN32_WCE
+# define dlsym(handle, func) GetProcAddress (handle, TEXT (func))
+#else
+# define dlsym(handle, func) GetProcAddress (handle, func)
+#endif
+#define dlclose(handle) FreeLibrary (handle)
+#else
+#include <dlfcn.h>
+#endif
+
+void
+do_test (int number)
+{
+ void **handles;
+ char libname[40];
+ int i;
+
+ handles = malloc (sizeof (void *) * number);
+
+ for (i = 0; i < number; i++)
+ {
+ sprintf (libname, "solib-lib%d", i);
+ handles[i] = dlopen (libname, RTLD_LAZY);
+ if (handles[i] == NULL)
+ {
+ printf ("ERROR on dlopen %s\n", libname);
+ return;
+ }
+ }
+
+ for (i = 0; i < number; i++)
+ {
+ char funname[20];
+ void *p;
+
+ sprintf (funname, "shr%d", i);
+ p = dlsym (handles[i], funname);
+ }
+
+ for (i = 0; i < number; i++)
+ dlclose (handles[i]);
+
+ free (handles);
+}
+
+static void
+end (void)
+{}
+
+int
+main (void)
+{
+ end ();
+
+ return 0;
+}
diff --git a/gdb/testsuite/gdb.perf/solib.exp b/gdb/testsuite/gdb.perf/solib.exp
new file mode 100644
index 0000000..8b50968
--- /dev/null
+++ b/gdb/testsuite/gdb.perf/solib.exp
@@ -0,0 +1,86 @@
+# 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 handling the
+# shared libraries of inferior are loaded and unloaded.
+
+standard_testfile .c
+set executable $testfile
+set expfile $testfile.exp
+
+# make check RUNTESTFLAGS='solib.exp SOLIB_NUMBER=1024'
+if ![info exists SOLIB_NUMBER] {
+ set SOLIB_NUMBER 128
+}
+
+for {set i 0} {$i < $SOLIB_NUMBER} {incr i} {
+
+ # Produce source files.
+ set libname "solib-lib$i"
+ set src [standard_temp_file $libname.c]
+ set exe [standard_temp_file $libname]
+
+ set code "int shr$i (void) {return $i;}"
+ set f [open $src "w"]
+ puts $f $code
+ close $f
+
+ # Compile.
+ if { [gdb_compile_shlib $src $exe {debug}] != "" } {
+ untested "Couldn't compile $src."
+ return -1
+ }
+
+ # Delete object files to save some space.
+ file delete [standard_temp_file "solib-lib$i.c.o"]
+}
+
+if { [prepare_for_testing ${testfile}.exp ${binfile} ${srcfile} {debug shlib_load} ] } {
+ return -1
+}
+
+clean_restart $binfile
+
+if ![runto_main] {
+ fail "Can't run to main"
+ return -1
+}
+
+set remote_python_file [gdb_remote_download host ${srcdir}/${subdir}/${testfile}.py]
+
+# Set sys.path for module perftest.
+gdb_test_no_output "python import os, sys"
+gdb_test_no_output "python sys.path.insert\(0, os.path.abspath\(\"${srcdir}/${subdir}/lib\"\)\)"
+
+gdb_test_no_output "python exec (open ('${remote_python_file}').read ())"
+
+gdb_test_no_output "python SolibLoadUnload\($SOLIB_NUMBER\)"
+
+# Call the convenience function registered by python script.
+send_gdb "call \$perftest()\n"
+gdb_expect 3000 {
+ -re "\"Done\".*${gdb_prompt} $" {
+ }
+ timeout {}
+}
+
+remote_file host delete ${remote_python_file}
+
+# Remove these libraries and source files.
+
+for {set i 0} {$i < $SOLIB_NUMBER} {incr i} {
+ file delete "solib-lib$i"
+ file delete "solib-lib$i.c"
+}
diff --git a/gdb/testsuite/gdb.perf/solib.py b/gdb/testsuite/gdb.perf/solib.py
new file mode 100644
index 0000000..7cc9c4a
--- /dev/null
+++ b/gdb/testsuite/gdb.perf/solib.py
@@ -0,0 +1,48 @@
+# 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 handling the
+# shared libraries of inferior are loaded and unloaded.
+
+import gdb
+import time
+
+from perftest import perftest
+
+class SolibLoadUnload(perftest.SingleVariableTestCase):
+ def __init__(self, solib_number):
+ super (SolibLoadUnload, self).__init__ ("solib")
+ self.solib_number = solib_number
+
+ def execute_test(self):
+ num = self.solib_number
+ iteration = 5;
+
+ # Warm up.
+ do_test_command = "call do_test (%d)" % num
+ gdb.execute (do_test_command)
+ gdb.execute (do_test_command)
+
+ while num > 0 and iteration > 0:
+ do_test_command = "call do_test (%d)" % num
+
+ start_time = time.clock()
+ gdb.execute (do_test_command)
+ elapsed_time = time.clock() - start_time
+
+ self.result.record (num, elapsed_time)
+
+ num = num / 2
+ iteration -= 1
--
1.7.7.6