TestSendSignal.py revision 431d839a33e9a274e705f7a268a1c9de2ffc2da2 
1"""Test that lldb command 'process signal SIGUSR1' to send a signal to the inferior works."""
2
3import os, time, signal
4import unittest2
5import lldb
6from lldbtest import *
7import lldbutil
8
9class SendSignalTestCase(TestBase):
10
11    mydir = os.path.join("functionalities", "signal")
12
13    @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
14    @dsym_test
15    def test_with_dsym_and_run_command(self):
16        """Test that lldb command 'process signal SIGUSR1' sends a signal to the inferior process."""
17        self.buildDsym()
18        self.send_signal()
19
20    @dwarf_test
21    def test_with_dwarf_and_run_command(self):
22        """Test that lldb command 'process signal SIGUSR1' sends a signal to the inferior process."""
23        self.buildDwarf()
24        self.send_signal()
25
26    def setUp(self):
27        # Call super's setUp().
28        TestBase.setUp(self)
29        # Find the line number to break inside main().
30        self.line = line_number('main.c', 'Put breakpoint here')
31
32    def send_signal(self):
33        """Test that lldb command 'process signal SIGUSR1' sends a signal to the inferior process."""
34
35        exe = os.path.join(os.getcwd(), "a.out")
36        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
37
38        # Break inside the main() function and immediately send a signal to the inferior after resuming.
39        lldbutil.run_break_set_by_file_and_line (self, "main.c", self.line, num_expected_locations=1, loc_exact=True)
40
41        self.runCmd("run", RUN_SUCCEEDED)
42        self.runCmd("thread backtrace")
43
44        # The stop reason of the thread should be breakpoint.
45        self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
46            substrs = ['stopped',
47                       'stop reason = breakpoint'])
48
49        # The breakpoint should have a hit count of 1.
50        self.expect("breakpoint list -f", BREAKPOINT_HIT_ONCE,
51            substrs = [' resolved, hit count = 1'])
52
53        self.runCmd("process status")
54        output = self.res.GetOutput()
55        pid = re.match("Process (.*) stopped", output).group(1)
56
57        # After resuming the process, send it a SIGUSR1 signal.
58
59        # It is necessary at this point to make command interpreter interaction
60        # be asynchronous, because we want to resume the process and to send it
61        # a signal.
62        self.dbg.SetAsync(True)
63        self.runCmd("process continue")
64        # Insert a delay of 1 second before doing the signaling stuffs.
65        time.sleep(1)
66
67        self.runCmd("process handle -n False -p True -s True SIGUSR1")
68        #os.kill(int(pid), signal.SIGUSR1)
69        self.runCmd("process signal SIGUSR1")
70
71        # Insert a delay of 1 second before checking the process status.
72        time.sleep(1)
73        # Make the interaction mode be synchronous again.
74        self.dbg.SetAsync(False)
75        self.expect("process status", STOPPED_DUE_TO_SIGNAL,
76            startstr = "Process %s stopped" % pid,
77            substrs = ['stop reason = signal SIGUSR1'])
78        self.expect("thread backtrace", STOPPED_DUE_TO_SIGNAL,
79            substrs = ['stop reason = signal SIGUSR1'])
80
81
82if __name__ == '__main__':
83    import atexit
84    lldb.SBDebugger.Initialize()
85    atexit.register(lambda: lldb.SBDebugger.Terminate())
86    unittest2.main()
87