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76 lines
2.2 KiB
76 lines
2.2 KiB
7 months ago
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"""Test lldb's stepping speed."""
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from __future__ import print_function
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import sys
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import lldb
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from lldbsuite.test import configuration
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from lldbsuite.test import lldbtest_config
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from lldbsuite.test.lldbbench import *
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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 SteppingSpeedBench(BenchBase):
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mydir = TestBase.compute_mydir(__file__)
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def setUp(self):
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BenchBase.setUp(self)
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self.exe = lldbtest_config.lldbExec
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self.break_spec = '-n main'
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self.count = 50
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self.trace("self.exe=%s" % self.exe)
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self.trace("self.break_spec=%s" % self.break_spec)
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@benchmarks_test
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@no_debug_info_test
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@expectedFailureAll(
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oslist=["windows"],
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bugnumber="llvm.org/pr22274: need a pexpect replacement for windows")
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def test_run_lldb_steppings(self):
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"""Test lldb steppings on a large executable."""
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print()
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self.run_lldb_steppings(self.exe, self.break_spec, self.count)
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print("lldb stepping benchmark:", self.stopwatch)
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def run_lldb_steppings(self, exe, break_spec, count):
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import pexpect
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# Set self.child_prompt, which is "(lldb) ".
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self.child_prompt = '(lldb) '
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prompt = self.child_prompt
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# So that the child gets torn down after the test.
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self.child = pexpect.spawn(
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'%s %s %s' %
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(lldbtest_config.lldbExec, self.lldbOption, exe))
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child = self.child
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# Turn on logging for what the child sends back.
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if self.TraceOn():
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child.logfile_read = sys.stdout
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child.expect_exact(prompt)
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child.sendline('breakpoint set %s' % break_spec)
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child.expect_exact(prompt)
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child.sendline('run')
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child.expect_exact(prompt)
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# Reset the stopwatch now.
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self.stopwatch.reset()
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for i in range(count):
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with self.stopwatch:
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# Disassemble the function.
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child.sendline('next') # Aka 'thread step-over'.
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child.expect_exact(prompt)
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child.sendline('quit')
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try:
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self.child.expect(pexpect.EOF)
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except:
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pass
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self.child = None
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