[Lldb-commits] [lldb] r128755 - in /lldb/trunk/utils/test: README-run-until-faulted main.c run-until-faulted.py
Johnny Chen
johnny.chen at apple.com
Fri Apr 1 18:20:28 PDT 2011
Author: johnny
Date: Fri Apr 1 20:20:28 2011
New Revision: 128755
URL: http://llvm.org/viewvc/llvm-project?rev=128755&view=rev
Log:
Add a Python script which launches a program from within lldb and loop until the
process stops for some reason. main.c (compiled into a.out) is used as an example in
the README-run-until-faulted file.
Added:
lldb/trunk/utils/test/README-run-until-faulted
lldb/trunk/utils/test/main.c
lldb/trunk/utils/test/run-until-faulted.py (with props)
Added: lldb/trunk/utils/test/README-run-until-faulted
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/utils/test/README-run-until-faulted?rev=128755&view=auto
==============================================================================
--- lldb/trunk/utils/test/README-run-until-faulted (added)
+++ lldb/trunk/utils/test/README-run-until-faulted Fri Apr 1 20:20:28 2011
@@ -0,0 +1,18 @@
+A example usage of the Python script run-until-faulted.py:
+
+[18:20:29] johnny:/Volumes/data/lldb/svn/trunk/utils/test $ ./run-until-faulted.py -l /Volumes/data/lldb/svn/trunk/build/Debug/lldb -e './a.out'
+lldb command: /Volumes/data/lldb/svn/trunk/build/Debug/lldb
+executable: ./a.out
+executable options:
+sending file command....
+sending process launch -- (iteration: 0)
+
+* thread #1: tid = 0x2d03, 0x0000000100000eef a.out`main + 39 at main.c:7, stop reason = EXC_BAD_ACCESS (code=1, address=0x0)
+ 4 {
+ 5 int *null_ptr = 0;
+ 6 printf("Hello, fault!\n");
+-> 7 printf("Now segfault %d\n", *null_ptr);
+ 8 }
+
+(lldb) q
+[18:20:40] johnny:/Volumes/data/lldb/svn/trunk/utils/test $
Added: lldb/trunk/utils/test/main.c
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/utils/test/main.c?rev=128755&view=auto
==============================================================================
--- lldb/trunk/utils/test/main.c (added)
+++ lldb/trunk/utils/test/main.c Fri Apr 1 20:20:28 2011
@@ -0,0 +1,8 @@
+#include <stdio.h>
+
+int main(int argc, const char* argv[])
+{
+ int *null_ptr = 0;
+ printf("Hello, fault!\n");
+ printf("Now segfault %d\n", *null_ptr);
+}
Added: lldb/trunk/utils/test/run-until-faulted.py
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/utils/test/run-until-faulted.py?rev=128755&view=auto
==============================================================================
--- lldb/trunk/utils/test/run-until-faulted.py (added)
+++ lldb/trunk/utils/test/run-until-faulted.py Fri Apr 1 20:20:28 2011
@@ -0,0 +1,118 @@
+#!/usr/bin/env python
+
+"""
+Run a program via lldb until it fails.
+The lldb executable is located via your PATH env variable, if not specified.
+"""
+
+import os
+import sys
+from optparse import OptionParser
+
+def is_exe(fpath):
+ """Check whether fpath is an executable."""
+ return os.path.isfile(fpath) and os.access(fpath, os.X_OK)
+
+def which(program):
+ """Find the full path to a program, or return None."""
+ fpath, fname = os.path.split(program)
+ if fpath:
+ if is_exe(program):
+ return program
+ else:
+ for path in os.environ["PATH"].split(os.pathsep):
+ exe_file = os.path.join(path, program)
+ if is_exe(exe_file):
+ return exe_file
+ return None
+
+def do_lldb_launch_loop(lldb_command, exe, exe_options):
+ from cStringIO import StringIO
+ import pexpect, time
+
+ prompt = "\(lldb\) "
+ lldb = pexpect.spawn(lldb_command)
+ # Turn on logging for what lldb sends back.
+ #lldb.logfile_read = sys.stdout
+ lldb.expect(prompt)
+
+ # Now issue the file command.
+ print "sending file command...."
+ lldb.sendline('file %s' % exe)
+ lldb.expect(prompt)
+ #print "lldb.buffer:--->", lldb.buffer, "<---"
+ #print "lldb.before:--->", lldb.before, "<---"
+ #print "lldb.after:--->", lldb.buffer, "<----"
+
+ # Loop until it faults....
+ count = 0
+ #while True:
+ # count = count + 1
+ for i in range(10):
+ count = i
+ print "sending process launch -- %s (iteration: %d)" % (exe_options, count)
+ lldb.sendline('process launch -- %s' % exe_options)
+ index = lldb.expect(['Process .* exited with status',
+ 'Process .* stopped',
+ pexpect.TIMEOUT])
+ #print "lldb.buffer:--->", lldb.buffer, "<---"
+ #print "lldb.before:--->", lldb.before, "<----"
+ #print "lldb.after:--->", lldb.buffer, "<----"
+ if index == 0:
+ # We'll try again later.
+ time.sleep(3)
+ elif index == 1:
+ # Perfect, our process had stopped; break out of the loop.
+ break;
+ elif index == 2:
+ # Something went wrong.
+ print "TIMEOUT occurred:", str(lldb)
+
+ # Give control of lldb shell to the user.
+ lldb.interact()
+
+def main():
+ # This is to set up the Python path to include the pexpect-2.4 dir.
+ # Remember to update this when/if things change.
+ scriptPath = sys.path[0]
+ sys.path.append(os.path.join(scriptPath, os.pardir, os.pardir, 'test', 'pexpect-2.4'))
+
+ parser = OptionParser(usage="""\
+Run a program via lldb until it fails.
+The lldb executable is located via your PATH env variable, if not specified.
+
+Usage: %prog [options]
+""")
+ parser.add_option('-l', '--lldb-command',
+ type='string', action='store', metavar='LLDB_COMMAND',
+ default='lldb', dest='lldb_command',
+ help='Full path to your lldb command')
+ parser.add_option('-e', '--executable',
+ type='string', action='store',
+ dest='exe',
+ help="""(Mandatory) The executable to launch via lldb.""")
+ parser.add_option('-o', '--options',
+ type='string', action='store',
+ default = '', dest='exe_options',
+ help="""The args/options passed to the launched program, if specified.""")
+
+ opts, args = parser.parse_args()
+
+ lldb_command = which(opts.lldb_command)
+
+ if not opts.exe:
+ parser.print_help()
+ sys.exit(1)
+ exe = opts.exe
+
+ exe_options = opts.exe_options
+
+ # We have parsed the options.
+ print "lldb command:", lldb_command
+ print "executable:", exe
+ print "executable options:", exe_options
+
+ do_lldb_launch_loop(lldb_command, exe, exe_options)
+
+if __name__ == '__main__':
+ main()
Propchange: lldb/trunk/utils/test/run-until-faulted.py
------------------------------------------------------------------------------
svn:executable = *
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