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5ec76fe720
This patch is the result of a discussion on lldb-dev, see http://lists.llvm.org/pipermail/lldb-dev/2018-January/013111.html for background. For each test (should be eventually: each test configuration) a separate build directory is created and we execute make VPATH=$srcdir/path/to/test -C $builddir/path/to/test -f $srcdir/path/to/test/Makefile -I $srcdir/path/to/test In order to make this work all LLDB tests need to be updated to find the executable in the test build directory, since CWD still points at the test's source directory, which is a requirement for unittest2. Although we have done extensive testing, I'm expecting that this first attempt will break a few bots. Please DO NOT HESITATE TO REVERT this patch in order to get the bots green again. We will likely have to iterate on this some more. Differential Revision: https://reviews.llvm.org/D42281 llvm-svn: 323803
94 lines
3.2 KiB
Python
94 lines
3.2 KiB
Python
"""
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Test "print object" where another thread blocks the print object from making progress.
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"""
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from __future__ import print_function
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import os
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import time
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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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@skipUnlessDarwin
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class PrintObjTestCase(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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# My source program.
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self.source = "blocked.m"
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# Find the line numbers to break at.
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self.line = line_number(self.source, '// Set a breakpoint here.')
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def test_print_obj(self):
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"""
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Test "print object" where another thread blocks the print object from making progress.
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Set a breakpoint on the line in my_pthread_routine. Then switch threads
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to the main thread, and do print the lock_me object. Since that will
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try to get the lock already gotten by my_pthread_routime thread, it will
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have to switch to running all threads, and that should then succeed.
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"""
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d = {'EXE': 'b.out'}
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self.build(dictionary=d)
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self.setTearDownCleanup(dictionary=d)
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exe = self.getBuildArtifact('b.out')
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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breakpoint = target.BreakpointCreateByLocation(self.source, self.line)
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self.assertTrue(breakpoint, VALID_BREAKPOINT)
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self.runCmd("breakpoint list")
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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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self.runCmd("thread backtrace all")
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# Let's get the current stopped thread. We'd like to switch to the
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# other thread to issue our 'po lock_me' command.
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import lldbsuite.test.lldbutil as lldbutil
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this_thread = lldbutil.get_stopped_thread(
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process, lldb.eStopReasonBreakpoint)
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self.assertTrue(this_thread)
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# Find the other thread. The iteration protocol of SBProcess and the
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# rich comparison methods (__eq__/__ne__) of SBThread come in handy.
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other_thread = None
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for t in process:
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if t != this_thread:
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other_thread = t
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break
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# Set the other thread as the selected thread to issue our 'po'
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# command.other
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self.assertTrue(other_thread)
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process.SetSelectedThread(other_thread)
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if self.TraceOn():
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print("selected thread:" + lldbutil.get_description(other_thread))
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self.runCmd("thread backtrace")
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# We want to traverse the frame to the one corresponding to blocked.m to
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# issue our 'po lock_me' command.
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depth = other_thread.GetNumFrames()
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for i in range(depth):
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frame = other_thread.GetFrameAtIndex(i)
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name = frame.GetFunctionName()
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if name == 'main':
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other_thread.SetSelectedFrame(i)
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if self.TraceOn():
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print("selected frame:" + lldbutil.get_description(frame))
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break
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self.expect("po lock_me", OBJECT_PRINTED_CORRECTLY,
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substrs=['I am pretty special.'])
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