0c86fbb557
bot. This happens because they are building a long result into a Python string, and the asan checker is making that very slow. The last two tests here are both slow, but the 'test_command' is the really slow one. I'm going to start disabling just that one and see if that gets the ASAN bots clean.
128 lines
5.1 KiB
Python
128 lines
5.1 KiB
Python
"""
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Test the 'memory region' command.
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"""
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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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class MemoryCommandRegion(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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# Find the line number to break for main.c.
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self.line = line_number(
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'main.cpp',
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'// Run here before printing memory regions')
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def test_help(self):
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""" Test that help shows you must have one of address or --all, not both."""
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self.expect("help memory region",
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substrs=["memory region <address-expression>",
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"memory region -a"])
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def setup_program(self):
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self.build()
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# Set breakpoint in main and run
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self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
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lldbutil.run_break_set_by_file_and_line(
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self, "main.cpp", self.line, num_expected_locations=-1, loc_exact=True)
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self.runCmd("run", RUN_SUCCEEDED)
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# This test builds a large result string in such a way that when run
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# under ASAN the test always times out. Most of the time is in the asan
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# checker under PyUnicode_Append.
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# This seems to be a worst-case scenario for ASAN performance.
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@skipIfAsan
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def test_command(self):
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self.setup_program()
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interp = self.dbg.GetCommandInterpreter()
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result = lldb.SBCommandReturnObject()
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# Test that the first 'memory region' command prints the usage.
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interp.HandleCommand("memory region", result)
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self.assertFalse(result.Succeeded())
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self.assertEqual(result.GetError(),
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"error: 'memory region' takes one argument or \"--all\" option:\n"
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"Usage: memory region <address-expression> (or --all)\n")
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# We allow --all or an address argument, not both
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interp.HandleCommand("memory region --all 0", result)
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self.assertFalse(result.Succeeded())
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self.assertRegexpMatches(result.GetError(),
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"The \"--all\" option cannot be used when an address argument is given")
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# Test that when the address fails to parse, we show an error and do not continue
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interp.HandleCommand("memory region not_an_address", result)
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self.assertFalse(result.Succeeded())
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self.assertEqual(result.GetError(),
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"error: invalid address argument \"not_an_address\": address expression \"not_an_address\" evaluation failed\n")
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# Accumulate the results to compare with the --all output
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all_regions = ""
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# Now let's print the memory region starting at 0 which should always work.
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interp.HandleCommand("memory region 0x0", result)
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self.assertTrue(result.Succeeded())
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self.assertRegexpMatches(result.GetOutput(), "\\[0x0+-")
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all_regions += result.GetOutput()
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# Keep printing memory regions until we printed all of them.
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while True:
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interp.HandleCommand("memory region", result)
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if not result.Succeeded():
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break
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all_regions += result.GetOutput()
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# Now that we reached the end, 'memory region' should again print the usage.
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interp.HandleCommand("memory region", result)
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self.assertFalse(result.Succeeded())
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self.assertRegexpMatches(result.GetError(), "Usage: memory region <address\-expression> \(or \-\-all\)")
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# --all should match what repeating the command gives you
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interp.HandleCommand("memory region --all", result)
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self.assertTrue(result.Succeeded())
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self.assertEqual(result.GetOutput(), all_regions)
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def test_no_overlapping_regions(self):
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# In the past on Windows we were recording AllocationBase as the base address
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# of the current region, not BaseAddress. So if a range of pages was split
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# into regions you would see several regions with the same base address.
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# This checks that this no longer happens (and it shouldn't happen on any
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# other OS either).
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self.setup_program()
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regions = self.process().GetMemoryRegions()
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num_regions = regions.GetSize()
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if num_regions:
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region = lldb.SBMemoryRegionInfo()
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regions.GetMemoryRegionAtIndex(0, region)
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previous_base = region.GetRegionBase()
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previous_end = region.GetRegionEnd()
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for idx in range(1, regions.GetSize()):
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regions.GetMemoryRegionAtIndex(idx, region)
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# Check that it does not overlap the previous region.
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# This could happen if we got the base addresses or size wrong.
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# Also catches the base addresses being the same.
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region_base = region.GetRegionBase()
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region_end = region.GetRegionEnd()
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self.assertFalse(
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(region_base < previous_end) and (previous_base < region_end),
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"Unexpected overlapping memory region found.")
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previous_base = region_base
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previous_end = region_end
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