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343 lines
11 KiB
Python
343 lines
11 KiB
Python
import lldb
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from intelpt_testcase import *
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from lldbsuite.test.lldbtest import *
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from lldbsuite.test import lldbutil
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from lldbsuite.test.decorators import *
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class TestTraceStartStop(TraceIntelPTTestCaseBase):
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def expectGenericHelpMessageForStartCommand(self):
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self.expect(
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"help thread trace start",
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substrs=["Syntax: thread trace start [<trace-options>]"],
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)
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@testSBAPIAndCommands
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def testStartStopSessionFileThreads(self):
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# it should fail for processes from json session files
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self.expect(
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"trace load -v "
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+ os.path.join(self.getSourceDir(), "intelpt-trace", "trace.json")
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)
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# the help command should be the generic one, as it's not a live process
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self.expectGenericHelpMessageForStartCommand()
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self.traceStartThread(error=True)
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self.traceStopThread(error=True)
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@testSBAPIAndCommands
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def testStartWithNoProcess(self):
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self.traceStartThread(error=True)
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@testSBAPIAndCommands
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def testStartSessionWithWrongSize(self):
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self.expect(
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"file " + os.path.join(self.getSourceDir(), "intelpt-trace", "a.out")
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)
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self.expect("b main")
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self.expect("r")
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self.traceStartThread(
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error=True,
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iptTraceSize=2000,
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substrs=["The intel pt trace size must be a power of 2", "It was 2000"],
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)
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self.traceStartThread(
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error=True,
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iptTraceSize=5000,
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substrs=["The intel pt trace size must be a power of 2", "It was 5000"],
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)
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self.traceStartThread(
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error=True,
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iptTraceSize=0,
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substrs=["The intel pt trace size must be a power of 2", "It was 0"],
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)
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self.traceStartThread(iptTraceSize=1048576)
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@testSBAPIAndCommands
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def testStartSessionWithSizeDeclarationInUnits(self):
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self.expect(
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"file " + os.path.join(self.getSourceDir(), "intelpt-trace", "a.out")
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)
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self.expect("b main")
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self.expect("r")
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self.traceStartThread(
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error=True,
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iptTraceSize="abc",
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substrs=["invalid bytes expression for 'abc'"],
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)
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self.traceStartThread(
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error=True,
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iptTraceSize="123.12",
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substrs=["invalid bytes expression for '123.12'"],
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)
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self.traceStartThread(
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error=True, iptTraceSize='""', substrs=["invalid bytes expression for ''"]
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)
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self.traceStartThread(
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error=True,
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iptTraceSize="2000B",
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substrs=[
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"The intel pt trace size must be a power of 2 greater than or equal to 4096 (2^12) bytes. It was 2000"
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],
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)
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self.traceStartThread(
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error=True,
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iptTraceSize="3MB",
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substrs=[
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"The intel pt trace size must be a power of 2 greater than or equal to 4096 (2^12) bytes. It was 3145728"
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],
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)
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self.traceStartThread(
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error=True,
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iptTraceSize="3MiB",
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substrs=[
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"The intel pt trace size must be a power of 2 greater than or equal to 4096 (2^12) bytes. It was 3145728"
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],
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)
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self.traceStartThread(
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error=True,
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iptTraceSize="3mib",
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substrs=[
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"The intel pt trace size must be a power of 2 greater than or equal to 4096 (2^12) bytes. It was 3145728"
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],
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)
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self.traceStartThread(
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error=True,
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iptTraceSize="3M",
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substrs=[
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"The intel pt trace size must be a power of 2 greater than or equal to 4096 (2^12) bytes. It was 3145728"
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],
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)
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self.traceStartThread(
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error=True,
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iptTraceSize="3KB",
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substrs=[
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"The intel pt trace size must be a power of 2 greater than or equal to 4096 (2^12) bytes. It was 3072"
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],
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)
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self.traceStartThread(
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error=True,
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iptTraceSize="3KiB",
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substrs=[
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"The intel pt trace size must be a power of 2 greater than or equal to 4096 (2^12) bytes. It was 3072"
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],
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)
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self.traceStartThread(
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error=True,
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iptTraceSize="3K",
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substrs=[
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"The intel pt trace size must be a power of 2 greater than or equal to 4096 (2^12) bytes. It was 3072"
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],
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)
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self.traceStartThread(
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error=True,
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iptTraceSize="3MS",
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substrs=["invalid bytes expression for '3MS'"],
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)
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self.traceStartThread(iptTraceSize="1048576")
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@skipIf(oslist=no_match(["linux"]), archs=no_match(["i386", "x86_64"]))
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def testSBAPIHelp(self):
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self.expect(
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"file " + os.path.join(self.getSourceDir(), "intelpt-trace", "a.out")
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)
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self.expect("b main")
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self.expect("r")
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help = self.getTraceOrCreate().GetStartConfigurationHelp()
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self.assertIn("iptTraceSize", help)
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self.assertIn("processBufferSizeLimit", help)
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@skipIf(oslist=no_match(["linux"]), archs=no_match(["i386", "x86_64"]))
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def testStoppingAThread(self):
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self.expect(
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"file " + os.path.join(self.getSourceDir(), "intelpt-trace", "a.out")
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)
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self.expect("b main")
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self.expect("r")
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self.expect("thread trace start")
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self.expect("n")
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self.expect(
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"thread trace dump instructions",
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substrs=[
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"""0x0000000000400511 movl $0x0, -0x4(%rbp)
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no more data"""
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],
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)
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# process stopping should stop the thread
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self.expect("process trace stop")
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self.expect("n")
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self.expect(
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"thread trace dump instructions", substrs=["not traced"], error=True
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)
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@skipIf(oslist=no_match(["linux"]), archs=no_match(["i386", "x86_64"]))
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def testStartStopLiveThreads(self):
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# The help command should be the generic one if there's no process running
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self.expectGenericHelpMessageForStartCommand()
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self.expect(
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"thread trace start", error=True, substrs=["error: Process not available"]
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)
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self.expect(
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"file " + os.path.join(self.getSourceDir(), "intelpt-trace", "a.out")
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)
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self.expect("b main")
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self.expect(
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"thread trace start", error=True, substrs=["error: Process not available"]
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)
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# The help command should be the generic one if there's still no process running
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self.expectGenericHelpMessageForStartCommand()
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self.expect("r")
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# This fails because "trace start" hasn't been called yet
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self.expect(
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"thread trace stop",
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error=True,
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substrs=["error: Process is not being traced"],
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)
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# the help command should be the intel-pt one now
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self.expect(
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"help thread trace start",
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substrs=[
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"Start tracing one or more threads with intel-pt.",
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"Syntax: thread trace start [<thread-index> <thread-index> ...] [<intel-pt-options>]",
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],
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)
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# We start tracing with a small buffer size
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self.expect("thread trace start 1 --size 4096")
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# We fail if we try to trace again
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self.expect(
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"thread trace start",
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error=True,
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substrs=["error: Thread ", "already traced"],
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)
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# We can reconstruct the single instruction executed in the first line
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self.expect("n")
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self.expect(
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"thread trace dump instructions -f",
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patterns=[
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rf"""thread #1: tid = .*
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a.out`main \+ 4 at main.cpp:2
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2: {ADDRESS_REGEX} movl"""
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],
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)
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# We can reconstruct the instructions up to the second line
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self.expect("n")
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self.expect(
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"thread trace dump instructions -f",
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patterns=[
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rf"""thread #1: tid = .*
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a.out`main \+ 4 at main.cpp:2
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2: {ADDRESS_REGEX} movl .*
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a.out`main \+ 11 at main.cpp:4
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4: {ADDRESS_REGEX} movl .*
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6: {ADDRESS_REGEX} jmp .* ; <\+28> at main.cpp:4
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8: {ADDRESS_REGEX} cmpl .*
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10: {ADDRESS_REGEX} jle .* ; <\+20> at main.cpp:5"""
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],
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)
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self.expect(
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"thread trace dump instructions",
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patterns=[
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rf"""thread #1: tid = .*
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a.out`main \+ 32 at main.cpp:4
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10: {ADDRESS_REGEX} jle .* ; <\+20> at main.cpp:5
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8: {ADDRESS_REGEX} cmpl .*
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6: {ADDRESS_REGEX} jmp .* ; <\+28> at main.cpp:4
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4: {ADDRESS_REGEX} movl .*
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a.out`main \+ 4 at main.cpp:2
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2: {ADDRESS_REGEX} movl .* """
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],
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)
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# We stop tracing
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self.expect("thread trace stop")
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# We can't stop twice
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self.expect(
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"thread trace stop",
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error=True,
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substrs=["error: Thread ", "not currently traced"],
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)
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# We trace again from scratch, this time letting LLDB to pick the current
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# thread
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self.expect("thread trace start")
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self.expect("n")
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self.expect(
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"thread trace dump instructions -f",
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patterns=[
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rf"""thread #1: tid = .*
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a.out`main \+ 20 at main.cpp:5
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2: {ADDRESS_REGEX} xorl"""
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],
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)
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self.expect(
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"thread trace dump instructions",
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patterns=[
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rf"""thread #1: tid = .*
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a.out`main \+ 20 at main.cpp:5
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2: {ADDRESS_REGEX} xorl"""
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],
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)
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self.expect("c")
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# Now the process has finished, so the commands should fail
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self.expect(
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"thread trace start",
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error=True,
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substrs=["error: Process must be launched"],
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)
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self.expect(
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"thread trace stop", error=True, substrs=["error: Process must be launched"]
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)
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# We should be able to trace the program if we relaunch it
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# For this, we'll trace starting at a different point in the new
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# process.
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self.expect("breakpoint disable")
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self.expect("b main.cpp:4")
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self.expect("r")
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self.expect("thread trace start")
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# We can reconstruct the single instruction executed in the first line
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self.expect("si")
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self.expect(
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"thread trace dump instructions -c 1",
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patterns=[
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rf"""thread #1: tid = .*
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a.out`main \+ 11 at main.cpp:4"""
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],
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)
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