186fac33d0
In fact, there's only one public API in StackFrameList that changes
the list explicitly. The rest only change the list if you happen to
ask for more frames than lldb has currently fetched and that
always adds frames "behind the user's back". So we were
much more prone to deadlocking than we needed to be.
This patch uses a shared_mutex instead, and when we have to add more
frames (in GetFramesUpTo) we switches to exclusive long enough to add
the frames, then goes back to shared.
Most of the work here was actually getting the stack frame list locking
to not
require a recursive mutex (shared mutexes aren't recursive).
I also added a test that has 5 threads progressively asking for more
frames simultaneously to make sure we get back valid frames and don't
deadlock.
136 lines
5.2 KiB
Python
136 lines
5.2 KiB
Python
"""Test the lldb public C++ api breakpoint callbacks."""
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import os
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import subprocess
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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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@skipIfNoSBHeaders
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class SBBreakpointCallbackCase(TestBase):
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NO_DEBUG_INFO_TESTCASE = True
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def setUp(self):
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TestBase.setUp(self)
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self.generateSource("driver.cpp")
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self.generateSource("listener_test.cpp")
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self.generateSource("test_breakpoint_callback.cpp")
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self.generateSource("test_breakpoint_location_callback.cpp")
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self.generateSource("test_listener_event_description.cpp")
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self.generateSource("test_listener_event_process_state.cpp")
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self.generateSource("test_listener_resume.cpp")
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self.generateSource("test_stop-hook.cpp")
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self.generateSource("test_concurrent_unwind.cpp")
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@skipIfRemote
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# clang-cl does not support throw or catch (llvm.org/pr24538)
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@skipIfWindows
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@skipIfHostIncompatibleWithTarget
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def test_python_stop_hook(self):
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"""Test that you can run a python command in a stop-hook when stdin is File based."""
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self.build_and_test("driver.cpp test_stop-hook.cpp", "test_python_stop_hook")
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@skipIfRemote
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# clang-cl does not support throw or catch (llvm.org/pr24538)
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@skipIfWindows
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@skipIfHostIncompatibleWithTarget
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def test_breakpoint_callback(self):
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"""Test the that SBBreakpoint callback is invoked when a breakpoint is hit."""
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self.build_and_test(
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"driver.cpp test_breakpoint_callback.cpp", "test_breakpoint_callback"
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)
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@skipIfRemote
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# clang-cl does not support throw or catch (llvm.org/pr24538)
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@skipIfWindows
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@skipIfHostIncompatibleWithTarget
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def test_breakpoint_location_callback(self):
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"""Test the that SBBreakpointLocation callback is invoked when a breakpoint is hit."""
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self.build_and_test(
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"driver.cpp test_breakpoint_location_callback.cpp",
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"test_breakpoint_location_callback",
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)
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@skipIfRemote
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# clang-cl does not support throw or catch (llvm.org/pr24538)
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@skipIfWindows
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@expectedFlakeyFreeBSD
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@skipIfHostIncompatibleWithTarget
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def test_sb_api_listener_event_description(self):
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"""Test the description of an SBListener breakpoint event is valid."""
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self.build_and_test(
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"driver.cpp listener_test.cpp test_listener_event_description.cpp",
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"test_listener_event_description",
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)
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@skipIfRemote
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# clang-cl does not support throw or catch (llvm.org/pr24538)
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@skipIfWindows
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@expectedFlakeyFreeBSD
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@skipIfHostIncompatibleWithTarget
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def test_sb_api_listener_event_process_state(self):
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"""Test that a registered SBListener receives events when a process
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changes state.
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"""
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self.build_and_test(
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"driver.cpp listener_test.cpp test_listener_event_process_state.cpp",
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"test_listener_event_process_state",
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)
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@skipIfRemote
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# clang-cl does not support throw or catch (llvm.org/pr24538)
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@skipIfWindows
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@expectedFlakeyFreeBSD
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@skipIf(oslist=["linux"]) # flakey
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@skipIfHostIncompatibleWithTarget
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def test_sb_api_listener_resume(self):
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"""Test that a process can be resumed from a non-main thread."""
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self.build_and_test(
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"driver.cpp listener_test.cpp test_listener_resume.cpp",
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"test_listener_resume",
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)
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@skipIfRemote
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# clang-cl does not support throw or catch (llvm.org/pr24538)
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@skipIfWindows
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@skipIfHostIncompatibleWithTarget
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def test_concurrent_unwind(self):
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"""Test that you can run a python command in a stop-hook when stdin is File based."""
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self.build_and_test(
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"driver.cpp test_concurrent_unwind.cpp",
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"test_concurrent_unwind",
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inferior_source="deep_stack.cpp",
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)
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def build_and_test(self, sources, test_name, inferior_source="inferior.cpp"):
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"""Build LLDB test from sources, and run expecting 0 exit code"""
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# These tests link against host lldb API.
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# Compiler's target triple must match liblldb triple
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# because remote is disabled, we can assume that the os is the same
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# still need to check architecture
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if self.getLldbArchitecture() != self.getArchitecture():
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self.skipTest(
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"This test is only run if the target arch is the same as the lldb binary arch"
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)
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self.inferior = "inferior_program"
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self.buildProgram(inferior_source, self.inferior)
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self.addTearDownHook(lambda: os.remove(self.getBuildArtifact(self.inferior)))
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self.buildDriver(sources, test_name)
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self.addTearDownHook(lambda: os.remove(self.getBuildArtifact(test_name)))
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test_exe = self.getBuildArtifact(test_name)
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exe = [test_exe, self.getBuildArtifact(self.inferior)]
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# check_call will raise a CalledProcessError if the executable doesn't
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# return exit code 0 to indicate success. We can let this exception go
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# - the test harness will recognize it as a test failure.
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subprocess.check_call(exe)
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def build_program(self, sources, program):
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return self.buildDriver(sources, program)
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