113 lines
4.6 KiB
Python
113 lines
4.6 KiB
Python
"""
|
|
Test how many times newly loaded binaries are notified;
|
|
they should be delivered in batches instead of one-by-one.
|
|
"""
|
|
|
|
from __future__ import print_function
|
|
|
|
|
|
import lldb
|
|
from lldbsuite.test.decorators import *
|
|
from lldbsuite.test.lldbtest import *
|
|
from lldbsuite.test import lldbutil
|
|
|
|
class ModuleLoadedNotifysTestCase(TestBase):
|
|
|
|
mydir = TestBase.compute_mydir(__file__)
|
|
NO_DEBUG_INFO_TESTCASE = True
|
|
|
|
# DynamicLoaderDarwin should batch up notifications about
|
|
# newly added/removed libraries. Other DynamicLoaders may
|
|
# not be written this way.
|
|
@skipUnlessDarwin
|
|
|
|
def setUp(self):
|
|
# Call super's setUp().
|
|
TestBase.setUp(self)
|
|
# Find the line number to break inside main().
|
|
self.line = line_number('main.cpp', '// breakpoint')
|
|
|
|
def test_launch_notifications(self):
|
|
"""Test that lldb broadcasts newly loaded libraries in batches."""
|
|
self.build()
|
|
exe = self.getBuildArtifact("a.out")
|
|
self.dbg.SetAsync(False)
|
|
|
|
listener = self.dbg.GetListener()
|
|
listener.StartListeningForEventClass(
|
|
self.dbg,
|
|
lldb.SBTarget.GetBroadcasterClassName(),
|
|
lldb.SBTarget.eBroadcastBitModulesLoaded | lldb.SBTarget.eBroadcastBitModulesUnloaded)
|
|
|
|
# Create a target by the debugger.
|
|
target = self.dbg.CreateTarget(exe)
|
|
self.assertTrue(target, VALID_TARGET)
|
|
|
|
# break on main
|
|
breakpoint = target.BreakpointCreateByName('main', 'a.out')
|
|
|
|
event = lldb.SBEvent()
|
|
# CreateTarget() generated modules-loaded events; consume them & toss
|
|
while listener.GetNextEvent(event):
|
|
True
|
|
|
|
error = lldb.SBError()
|
|
flags = lldb.eLaunchFlagInheritTCCFromParent
|
|
process = target.Launch(listener,
|
|
None, # argv
|
|
None, # envp
|
|
None, # stdin_path
|
|
None, # stdout_path
|
|
None, # stderr_path
|
|
None, # working directory
|
|
flags, # launch flags
|
|
False, # Stop at entry
|
|
error) # error
|
|
|
|
self.assertTrue(
|
|
process.GetState() == lldb.eStateStopped,
|
|
PROCESS_STOPPED)
|
|
|
|
total_solibs_added = 0
|
|
total_solibs_removed = 0
|
|
total_modules_added_events = 0
|
|
total_modules_removed_events = 0
|
|
while listener.GetNextEvent(event):
|
|
if lldb.SBTarget.EventIsTargetEvent(event):
|
|
if event.GetType() == lldb.SBTarget.eBroadcastBitModulesLoaded:
|
|
solib_count = lldb.SBTarget.GetNumModulesFromEvent(event)
|
|
total_modules_added_events += 1
|
|
total_solibs_added += solib_count
|
|
if self.TraceOn():
|
|
# print all of the binaries that have been added
|
|
added_files = []
|
|
i = 0
|
|
while i < solib_count:
|
|
module = lldb.SBTarget.GetModuleAtIndexFromEvent(i, event)
|
|
added_files.append(module.GetFileSpec().GetFilename())
|
|
i = i + 1
|
|
print("Loaded files: %s" % (', '.join(added_files)))
|
|
|
|
if event.GetType() == lldb.SBTarget.eBroadcastBitModulesUnloaded:
|
|
solib_count = lldb.SBTarget.GetNumModulesFromEvent(event)
|
|
total_modules_removed_events += 1
|
|
total_solibs_removed += solib_count
|
|
if self.TraceOn():
|
|
# print all of the binaries that have been removed
|
|
removed_files = []
|
|
i = 0
|
|
while i < solib_count:
|
|
module = lldb.SBTarget.GetModuleAtIndexFromEvent(i, event)
|
|
removed_files.append(module.GetFileSpec().GetFilename())
|
|
i = i + 1
|
|
print("Unloaded files: %s" % (', '.join(removed_files)))
|
|
|
|
|
|
# This is testing that we get back a small number of events with the loaded
|
|
# binaries in batches. Check that we got back more than 1 solib per event.
|
|
# In practice on Darwin today, we get back two events for a do-nothing c
|
|
# program: a.out and dyld, and then all the rest of the system libraries.
|
|
|
|
avg_solibs_added_per_event = int(float(total_solibs_added) / float(total_modules_added_events))
|
|
self.assertGreater(avg_solibs_added_per_event, 1)
|