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1"""
2Test that lldb stop-hook works for multiple threads.
3"""
4
5import os, time
6import unittest2
7import lldb
8import pexpect
9from lldbtest import *
10
11class StopHookForMultipleThreadsTestCase(TestBase):
12
13    mydir = os.path.join("functionalities", "stop-hook", "multiple_threads")
14
15    @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
16    @dsym_test
17    def test_stop_hook_multiple_threads_with_dsym(self):
18        """Test that lldb stop-hook works for multiple threads."""
19        self.buildDsym(dictionary=self.d)
20        self.setTearDownCleanup(dictionary=self.d)
21        self.stop_hook_multiple_threads()
22
23    @dwarf_test
24    @skipIfLinux # due to llvm.org/pr14323
25    def test_stop_hook_multiple_threads_with_dwarf(self):
26        """Test that lldb stop-hook works for multiple threads."""
27        self.buildDwarf(dictionary=self.d)
28        self.setTearDownCleanup(dictionary=self.d)
29        self.stop_hook_multiple_threads()
30
31    def setUp(self):
32        # Call super's setUp().
33        TestBase.setUp(self)
34        # Our simple source filename.
35        self.source = 'main.cpp'
36        # Find the line number to break inside main().
37        self.first_stop = line_number(self.source, '// Set break point at this line, and add a stop-hook.')
38        self.thread_function = line_number(self.source, '// Break here to test that the stop-hook mechanism works for multiple threads.')
39        # Build dictionary to have unique executable names for each test method.
40        self.exe_name = self.testMethodName
41        self.d = {'CXX_SOURCES': self.source, 'EXE': self.exe_name}
42
43    def stop_hook_multiple_threads(self):
44        """Test that lldb stop-hook works for multiple threads."""
45        exe = os.path.join(os.getcwd(), self.exe_name)
46        prompt = "(lldb) "
47
48        # So that the child gets torn down after the test.
49        self.child = pexpect.spawn('%s %s %s' % (self.lldbHere, self.lldbOption, exe))
50        child = self.child
51        # Turn on logging for what the child sends back.
52        if self.TraceOn():
53            child.logfile_read = sys.stdout
54
55        # Set the breakpoint, followed by the target stop-hook commands.
56        child.expect_exact(prompt)
57        child.sendline('breakpoint set -f main.cpp -l %d' % self.first_stop)
58        child.expect_exact(prompt)
59        child.sendline('breakpoint set -f main.cpp -l %d' % self.thread_function)
60        child.expect_exact(prompt)
61
62        # Now run the program, expect to stop at the the first breakpoint which is within the stop-hook range.
63        child.sendline('run')
64        child.expect_exact(prompt)
65        child.sendline('target stop-hook add -o "frame variable --show-globals g_val"')
66        child.expect_exact(prompt)
67
68        # Continue and expect to find the output emitted by the firing of our stop hook.
69        child.sendline('continue')
70        child.expect_exact('(uint32_t) g_val = ')
71
72
73if __name__ == '__main__':
74    import atexit
75    lldb.SBDebugger.Initialize()
76    atexit.register(lambda: lldb.SBDebugger.Terminate())
77    unittest2.main()
78