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"""
Test lldb breakpoint command add/list/delete.
"""
from __future__ import print_function
import os, time
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class BreakpointCommandTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
@classmethod
def classCleanup(cls):
"""Cleanup the test byproduct of breakpoint_command_sequence(self)."""
cls.RemoveTempFile("output.txt")
cls.RemoveTempFile("output2.txt")
@expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24528")
def test(self):
"""Test a sequence of breakpoint command add, list, and delete."""
self.build()
self.breakpoint_command_sequence()
self.breakpoint_command_script_parameters ()
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Find the line number to break inside main().
self.line = line_number('main.c', '// Set break point at this line.')
# disable "There is a running process, kill it and restart?" prompt
self.runCmd("settings set auto-confirm true")
self.addTearDownHook(lambda: self.runCmd("settings clear auto-confirm"))
def breakpoint_command_sequence(self):
"""Test a sequence of breakpoint command add, list, and delete."""
exe = os.path.join(os.getcwd(), "a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
# Add three breakpoints on the same line. The first time we don't specify the file,
# since the default file is the one containing main:
lldbutil.run_break_set_by_file_and_line (self, None, self.line, num_expected_locations=1, loc_exact=True)
lldbutil.run_break_set_by_file_and_line (self, "main.c", self.line, num_expected_locations=1, loc_exact=True)
lldbutil.run_break_set_by_file_and_line (self, "main.c", self.line, num_expected_locations=1, loc_exact=True)
# Breakpoint 4 - set at the same location as breakpoint 1 to test setting breakpoint commands on two breakpoints at a time
lldbutil.run_break_set_by_file_and_line (self, None, self.line, num_expected_locations=1, loc_exact=True)
# Now add callbacks for the breakpoints just created.
self.runCmd("breakpoint command add -s command -o 'frame variable --show-types --scope' 1 4")
self.runCmd("breakpoint command add -s python -o 'here = open(\"output.txt\", \"w\"); here.write(\"lldb\\n\"); here.close()' 2")
self.runCmd("breakpoint command add --python-function bktptcmd.function 3")
# Check that the breakpoint commands are correctly set.
# The breakpoint list now only contains breakpoint 1.
self.expect("breakpoint list", "Breakpoints 1 & 2 created",
substrs = ["2: file = 'main.c', line = %d, exact_match = 0, locations = 1" % self.line],
patterns = ["1: file = '.*main.c', line = %d, exact_match = 0, locations = 1" % self.line] )
self.expect("breakpoint list -f", "Breakpoints 1 & 2 created",
substrs = ["2: file = 'main.c', line = %d, exact_match = 0, locations = 1" % self.line],
patterns = ["1: file = '.*main.c', line = %d, exact_match = 0, locations = 1" % self.line,
"1.1: .+at main.c:%d, .+unresolved, hit count = 0" % self.line,
"2.1: .+at main.c:%d, .+unresolved, hit count = 0" % self.line])
self.expect("breakpoint command list 1", "Breakpoint 1 command ok",
substrs = ["Breakpoint commands:",
"frame variable --show-types --scope"])
self.expect("breakpoint command list 2", "Breakpoint 2 command ok",
substrs = ["Breakpoint commands:",
"here = open",
"here.write",
"here.close()"])
self.expect("breakpoint command list 3", "Breakpoint 3 command ok",
substrs = ["Breakpoint commands:",
"bktptcmd.function(frame, bp_loc, internal_dict)"])
self.expect("breakpoint command list 4", "Breakpoint 4 command ok",
substrs = ["Breakpoint commands:",
"frame variable --show-types --scope"])
self.runCmd("breakpoint delete 4")
self.runCmd("command script import --allow-reload ./bktptcmd.py")
# Next lets try some other breakpoint kinds. First break with a regular expression
# and then specify only one file. The first time we should get two locations,
# the second time only one:
lldbutil.run_break_set_by_regexp (self, r"._MyFunction", num_expected_locations=2)
lldbutil.run_break_set_by_regexp (self, r"._MyFunction", extra_options="-f a.c", num_expected_locations=1)
lldbutil.run_break_set_by_regexp (self, r"._MyFunction", extra_options="-f a.c -f b.c", num_expected_locations=2)
# Now try a source regex breakpoint:
lldbutil.run_break_set_by_source_regexp (self, r"is about to return [12]0", extra_options="-f a.c -f b.c", num_expected_locations=2)
lldbutil.run_break_set_by_source_regexp (self, r"is about to return [12]0", extra_options="-f a.c", num_expected_locations=1)
# Run the program. Remove 'output.txt' if it exists.
self.RemoveTempFile("output.txt")
self.RemoveTempFile("output2.txt")
self.runCmd("run", RUN_SUCCEEDED)
# Check that the file 'output.txt' exists and contains the string "lldb".
# The 'output.txt' file should now exist.
self.assertTrue(os.path.isfile("output.txt"),
"'output.txt' exists due to breakpoint command for breakpoint 2.")
self.assertTrue(os.path.isfile("output2.txt"),
"'output2.txt' exists due to breakpoint command for breakpoint 3.")
# Read the output file produced by running the program.
with open('output.txt', 'r') as f:
output = f.read()
self.expect(output, "File 'output.txt' and the content matches", exe=False,
startstr = "lldb")
with open('output2.txt', 'r') as f:
output = f.read()
self.expect(output, "File 'output2.txt' and the content matches", exe=False,
startstr = "lldb")
# Finish the program.
self.runCmd("process continue")
# Remove the breakpoint command associated with breakpoint 1.
self.runCmd("breakpoint command delete 1")
# Remove breakpoint 2.
self.runCmd("breakpoint delete 2")
self.expect("breakpoint command list 1",
startstr = "Breakpoint 1 does not have an associated command.")
self.expect("breakpoint command list 2", error=True,
startstr = "error: '2' is not a currently valid breakpoint ID.")
# The breakpoint list now only contains breakpoint 1.
self.expect("breakpoint list -f", "Breakpoint 1 exists",
patterns = ["1: file = '.*main.c', line = %d, exact_match = 0, locations = 1, resolved = 1" %
self.line,
"hit count = 1"])
# Not breakpoint 2.
self.expect("breakpoint list -f", "No more breakpoint 2", matching=False,
substrs = ["2: file = 'main.c', line = %d, exact_match = 0, locations = 1, resolved = 1" %
self.line])
# Run the program again, with breakpoint 1 remaining.
self.runCmd("run", RUN_SUCCEEDED)
# We should be stopped again due to breakpoint 1.
# The stop reason of the thread should be breakpoint.
self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
substrs = ['stopped',
'stop reason = breakpoint'])
# The breakpoint should have a hit count of 2.
self.expect("breakpoint list -f", BREAKPOINT_HIT_TWICE,
substrs = ['resolved, hit count = 2'])
def breakpoint_command_script_parameters (self):
"""Test that the frame and breakpoint location are being properly passed to the script breakpoint command function."""
exe = os.path.join(os.getcwd(), "a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
# Add a breakpoint.
lldbutil.run_break_set_by_file_and_line (self, "main.c", self.line, num_expected_locations=1, loc_exact=True)
# Now add callbacks for the breakpoints just created.
self.runCmd("breakpoint command add -s python -o 'here = open(\"output-2.txt\", \"w\"); here.write(str(frame) + \"\\n\"); here.write(str(bp_loc) + \"\\n\"); here.close()' 1")
# Remove 'output-2.txt' if it already exists.
if (os.path.exists('output-2.txt')):
os.remove ('output-2.txt')
# Run program, hit breakpoint, and hopefully write out new version of 'output-2.txt'
self.runCmd ("run", RUN_SUCCEEDED)
# Check that the file 'output.txt' exists and contains the string "lldb".
# The 'output-2.txt' file should now exist.
self.assertTrue(os.path.isfile("output-2.txt"),
"'output-2.txt' exists due to breakpoint command for breakpoint 1.")
# Read the output file produced by running the program.
with open('output-2.txt', 'r') as f:
output = f.read()
self.expect (output, "File 'output-2.txt' and the content matches", exe=False,
startstr = "frame #0:",
patterns = ["1.* where = .*main .* resolved, hit count = 1" ])
# Now remove 'output-2.txt'
os.remove ('output-2.txt')
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