1e5083a563
A problem that I introduced in the decoder is that I was considering TSC decoding errors as actual instruction errors, which mean that the trace has a gap. This is wrong because a TSC decoding error doesn't mean that there's a gap in the trace. Instead, now I'm just counting how many of these errors happened and I'm using the `dump info` command to check for this number. Besides that, I refactored the decoder a little bit to make it simpler, more readable, and to handle TSCs in a cleaner way. Differential Revision: https://reviews.llvm.org/D122867
47 lines
1.6 KiB
Python
47 lines
1.6 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 TestTraceDumpInfo(TraceIntelPTTestCaseBase):
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mydir = TestBase.compute_mydir(__file__)
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def testErrorMessages(self):
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# We first check the output when there are no targets
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self.expect("thread trace dump info",
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substrs=["error: invalid target, create a target using the 'target create' command"],
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error=True)
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# We now check the output when there's a non-running target
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self.expect("target create " +
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os.path.join(self.getSourceDir(), "intelpt-trace", "a.out"))
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self.expect("thread trace dump info",
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substrs=["error: Command requires a current process."],
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error=True)
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# Now we check the output when there's a running target without a trace
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self.expect("b main")
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self.expect("run")
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self.expect("thread trace dump info",
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substrs=["error: Process is not being traced"],
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error=True)
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def testDumpRawTraceSize(self):
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self.expect("trace load -v " +
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os.path.join(self.getSourceDir(), "intelpt-trace", "trace.json"),
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substrs=["intel-pt"])
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self.expect("thread trace dump info",
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substrs=['''Trace technology: intel-pt
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thread #1: tid = 3842849
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Raw trace size: 4 KiB
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Total number of instructions: 21
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Total approximate memory usage: 0.98 KiB
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Average memory usage per instruction: 48.00 bytes
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Number of TSC decoding errors: 0'''])
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