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"""
Test breakpoint conditions with 'breakpoint modify -c <expr> id'.
"""
import os, time
import re
import unittest2
import lldb, lldbutil
from lldbtest import *
class BreakpointConditionsTestCase(TestBase):
mydir = "breakpoint_conditions"
@unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
def test_with_dsym_and_run_command(self):
"""Exercise breakpoint condition with 'breakpoint modify -c <expr> id'."""
self.buildDsym()
self.breakpoint_conditions()
@unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
def test_with_dsym_and_python_api(self):
"""Use Python APIs to set breakpoint conditions."""
self.buildDsym()
self.breakpoint_conditions_python()
def test_with_dwarf_and_run_command(self):
"""Exercise breakpoint condition with 'breakpoint modify -c <expr> id'."""
self.buildDwarf()
self.breakpoint_conditions()
def test_with_dwarf_and_python_api(self):
"""Use Python APIs to set breakpoint conditions."""
self.buildDwarf()
self.breakpoint_conditions_python()
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Find the line number to of function 'c'.
self.line1 = line_number('main.c', '// Find the line number of function "c" here.')
self.line2 = line_number('main.c', "// Find the line number of c's parent call here.")
def breakpoint_conditions(self):
"""Exercise breakpoint condition with 'breakpoint modify -c <expr> id'."""
exe = os.path.join(os.getcwd(), "a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
# Create a breakpoint by function name 'c'.
self.expect("breakpoint set -n c", BREAKPOINT_CREATED,
startstr = "Breakpoint created: 1: name = 'c', locations = 1")
# And set a condition on the breakpoint to stop on when 'val == 3'.
self.runCmd("breakpoint modify -c 'val == 3' 1")
# Now run the program.
self.runCmd("run", RUN_SUCCEEDED)
# The process should be stopped.
self.expect("process status", PROCESS_STOPPED,
patterns = ['Process .* stopped'])
# 'frame variable -t val' should return 3 due to breakpoint condition.
self.expect("frame variable -t val", VARIABLES_DISPLAYED_CORRECTLY,
startstr = '(int) val = 3')
# Also check the hit count, which should be 3, by design.
self.expect("breakpoint list", BREAKPOINT_HIT_THRICE,
substrs = ["resolved = 1",
"Condition: val == 3",
"hit count = 3"])
# The frame #0 should correspond to main.c:36, the executable statement
# in function name 'c'. And the parent frame should point to main.c:24.
self.expect("thread backtrace", STOPPED_DUE_TO_BREAKPOINT_CONDITION,
#substrs = ["stop reason = breakpoint"],
patterns = ["frame #0.*main.c:%d" % self.line1,
"frame #1.*main.c:%d" % self.line2])
def breakpoint_conditions_python(self):
"""Use Python APIs to set breakpoint conditions."""
exe = os.path.join(os.getcwd(), "a.out")
# Create a target by the debugger.
target = self.dbg.CreateTarget(exe)
self.assertTrue(target.IsValid(), VALID_TARGET)
# Now create a breakpoint on main.c by name 'c'.
breakpoint = target.BreakpointCreateByName('c', 'a.out')
#print "breakpoint:", breakpoint
self.assertTrue(breakpoint.IsValid() and
breakpoint.GetNumLocations() == 1,
VALID_BREAKPOINT)
# Get the breakpoint location from breakpoint after we verified that,
# indeed, it has one location.
location = breakpoint.GetLocationAtIndex(0)
self.assertTrue(location.IsValid() and
location.IsEnabled(),
VALID_BREAKPOINT_LOCATION)
# Set the condition on the breakpoint location.
location.SetCondition('val == 3')
self.expect(location.GetCondition(), exe=False,
startstr = 'val == 3')
# Now launch the process, and do not stop at entry point.
self.process = target.LaunchProcess([''], [''], os.ctermid(), 0, False)
self.process = target.GetProcess()
self.assertTrue(self.process.IsValid(), PROCESS_IS_VALID)
# Frame #0 should be on self.line1 and the break condition should hold.
frame0 = self.process.GetThreadAtIndex(0).GetFrameAtIndex(0)
var = frame0.LookupVarInScope('val', 'parameter')
self.assertTrue(frame0.GetLineEntry().GetLine() == self.line1 and
var.GetValue(frame0) == '3')
# The hit count for the breakpoint should be 3.
self.assertTrue(breakpoint.GetHitCount() == 3)
self.process.Continue()
if __name__ == '__main__':
import atexit
lldb.SBDebugger.Initialize()
atexit.register(lambda: lldb.SBDebugger.Terminate())
unittest2.main()
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