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b9c1b51e45
*** to conform to clang-format’s LLVM style. This kind of mass change has
*** two obvious implications:
Firstly, merging this particular commit into a downstream fork may be a huge
effort. Alternatively, it may be worth merging all changes up to this commit,
performing the same reformatting operation locally, and then discarding the
merge for this particular commit. The commands used to accomplish this
reformatting were as follows (with current working directory as the root of
the repository):
find . \( -iname "*.c" -or -iname "*.cpp" -or -iname "*.h" -or -iname "*.mm" \) -exec clang-format -i {} +
find . -iname "*.py" -exec autopep8 --in-place --aggressive --aggressive {} + ;
The version of clang-format used was 3.9.0, and autopep8 was 1.2.4.
Secondly, “blame” style tools will generally point to this commit instead of
a meaningful prior commit. There are alternatives available that will attempt
to look through this change and find the appropriate prior commit. YMMV.
llvm-svn: 280751
212 lines
8.0 KiB
Python
212 lines
8.0 KiB
Python
"""
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Test lldb core component: SourceManager.
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Test cases:
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o test_display_source_python:
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Test display of source using the SBSourceManager API.
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o test_modify_source_file_while_debugging:
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Test the caching mechanism of the source manager.
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"""
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from __future__ import print_function
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import lldb
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from lldbsuite.test.decorators import *
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from lldbsuite.test.lldbtest import *
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from lldbsuite.test import lldbutil
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class SourceManagerTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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def setUp(self):
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# Call super's setUp().
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TestBase.setUp(self)
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# Find the line number to break inside main().
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self.line = line_number('main.c', '// Set break point at this line.')
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@add_test_categories(['pyapi'])
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def test_display_source_python(self):
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"""Test display of source using the SBSourceManager API."""
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self.build()
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exe = os.path.join(os.getcwd(), "a.out")
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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# Launch the process, and do not stop at the entry point.
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process = target.LaunchSimple(
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None, None, self.get_process_working_directory())
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#
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# Exercise Python APIs to display source lines.
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#
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# Create the filespec for 'main.c'.
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filespec = lldb.SBFileSpec('main.c', False)
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source_mgr = self.dbg.GetSourceManager()
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# Use a string stream as the destination.
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stream = lldb.SBStream()
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source_mgr.DisplaySourceLinesWithLineNumbers(filespec,
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self.line,
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2, # context before
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2, # context after
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"=>", # prefix for current line
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stream)
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# 2
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# 3 int main(int argc, char const *argv[]) {
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# => 4 printf("Hello world.\n"); // Set break point at this line.
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# 5 return 0;
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# 6 }
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self.expect(stream.GetData(), "Source code displayed correctly",
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exe=False,
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patterns=['=> %d.*Hello world' % self.line])
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# Boundary condition testings for SBStream(). LLDB should not crash!
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stream.Print(None)
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stream.RedirectToFile(None, True)
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def test_move_and_then_display_source(self):
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"""Test that target.source-map settings work by moving main.c to hidden/main.c."""
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self.build()
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exe = os.path.join(os.getcwd(), "a.out")
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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# Move main.c to hidden/main.c.
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main_c = "main.c"
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main_c_hidden = os.path.join("hidden", main_c)
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os.rename(main_c, main_c_hidden)
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# Restore main.c after the test.
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self.addTearDownHook(lambda: os.rename(main_c_hidden, main_c))
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if self.TraceOn():
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system([["ls"]])
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system([["ls", "hidden"]])
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# Set source remapping with invalid replace path and verify we get an
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# error
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self.expect(
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"settings set target.source-map /a/b/c/d/e /q/r/s/t/u",
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error=True,
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substrs=['''error: the replacement path doesn't exist: "/q/r/s/t/u"'''])
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# Set target.source-map settings.
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self.runCmd("settings set target.source-map %s %s" %
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(os.getcwd(), os.path.join(os.getcwd(), "hidden")))
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# And verify that the settings work.
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self.expect("settings show target.source-map",
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substrs=[os.getcwd(), os.path.join(os.getcwd(), "hidden")])
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# Display main() and verify that the source mapping has been kicked in.
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self.expect("source list -n main", SOURCE_DISPLAYED_CORRECTLY,
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substrs=['Hello world'])
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def test_modify_source_file_while_debugging(self):
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"""Modify a source file while debugging the executable."""
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self.build()
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exe = os.path.join(os.getcwd(), "a.out")
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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lldbutil.run_break_set_by_file_and_line(
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self, "main.c", self.line, num_expected_locations=1, loc_exact=True)
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self.runCmd("run", RUN_SUCCEEDED)
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# The stop reason of the thread should be breakpoint.
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self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
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substrs=['stopped',
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'main.c:%d' % self.line,
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'stop reason = breakpoint'])
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# Display some source code.
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self.expect(
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"source list -f main.c -l %d" %
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self.line,
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SOURCE_DISPLAYED_CORRECTLY,
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substrs=['Hello world'])
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# The '-b' option shows the line table locations from the debug information
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# that indicates valid places to set source level breakpoints.
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# The file to display is implicit in this case.
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self.runCmd("source list -l %d -c 3 -b" % self.line)
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output = self.res.GetOutput().splitlines()[0]
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# If the breakpoint set command succeeded, we should expect a positive number
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# of breakpoints for the current line, i.e., self.line.
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import re
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m = re.search('^\[(\d+)\].*// Set break point at this line.', output)
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if not m:
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self.fail("Fail to display source level breakpoints")
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self.assertTrue(int(m.group(1)) > 0)
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# Read the main.c file content.
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with io.open('main.c', 'r', newline='\n') as f:
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original_content = f.read()
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if self.TraceOn():
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print("original content:", original_content)
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# Modify the in-memory copy of the original source code.
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new_content = original_content.replace('Hello world', 'Hello lldb', 1)
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# This is the function to restore the original content.
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def restore_file():
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#print("os.path.getmtime() before restore:", os.path.getmtime('main.c'))
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time.sleep(1)
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with io.open('main.c', 'w', newline='\n') as f:
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f.write(original_content)
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if self.TraceOn():
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with open('main.c', 'r') as f:
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print("content restored to:", f.read())
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# Touch the file just to be sure.
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os.utime('main.c', None)
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if self.TraceOn():
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print(
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"os.path.getmtime() after restore:",
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os.path.getmtime('main.c'))
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# Modify the source code file.
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with io.open('main.c', 'w', newline='\n') as f:
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time.sleep(1)
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f.write(new_content)
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if self.TraceOn():
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print("new content:", new_content)
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print(
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"os.path.getmtime() after writing new content:",
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os.path.getmtime('main.c'))
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# Add teardown hook to restore the file to the original content.
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self.addTearDownHook(restore_file)
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# Display the source code again. We should see the updated line.
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self.expect(
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"source list -f main.c -l %d" %
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self.line,
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SOURCE_DISPLAYED_CORRECTLY,
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substrs=['Hello lldb'])
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def test_set_breakpoint_with_absolute_path(self):
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self.build()
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self.runCmd("settings set target.source-map %s %s" %
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(os.getcwd(), os.path.join(os.getcwd(), "hidden")))
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exe = os.path.join(os.getcwd(), "a.out")
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main = os.path.join(os.getcwd(), "hidden", "main.c")
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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lldbutil.run_break_set_by_file_and_line(
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self, main, self.line, num_expected_locations=1, loc_exact=False)
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self.runCmd("run", RUN_SUCCEEDED)
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# The stop reason of the thread should be breakpoint.
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self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
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substrs=['stopped',
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'main.c:%d' % self.line,
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'stop reason = breakpoint'])
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