82 lines
2.9 KiB
Python
82 lines
2.9 KiB
Python
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"""Test lldb's startup delays creating a target, setting a breakpoint, and run to breakpoint stop."""
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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.decorators import *
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from lldbsuite.test.lldbbench import *
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class StartupDelaysBench(BenchBase):
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def setUp(self):
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BenchBase.setUp(self)
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# Create self.stopwatch2 for measuring "set first breakpoint".
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# The default self.stopwatch is for "create fresh target".
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self.stopwatch2 = Stopwatch()
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# Create self.stopwatch3 for measuring "run to breakpoint".
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self.stopwatch3 = Stopwatch()
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self.exe = lldbtest_config.lldbExec
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self.break_spec = "-n main"
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self.count = 30
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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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)
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def test_startup_delay(self):
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"""Test start up delays creating a target, setting a breakpoint, and run to breakpoint stop."""
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print()
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self.run_startup_delays_bench(self.exe, self.break_spec, self.count)
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print("lldb startup delay (create fresh target) benchmark:", self.stopwatch)
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print("lldb startup delay (set first breakpoint) benchmark:", self.stopwatch2)
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print("lldb startup delay (run to breakpoint) benchmark:", self.stopwatch3)
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def run_startup_delays_bench(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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# Reset the stopwatchs now.
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self.stopwatch.reset()
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self.stopwatch2.reset()
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for i in range(count):
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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" % (lldbtest_config.lldbExec, self.lldbOption)
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)
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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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with self.stopwatch:
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# Create a fresh target.
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child.sendline("file %s" % exe) # Aka 'target create'.
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child.expect_exact(prompt)
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with self.stopwatch2:
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# Read debug info and set the first breakpoint.
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child.sendline("breakpoint set %s" % break_spec)
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child.expect_exact(prompt)
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with self.stopwatch3:
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# Run to the breakpoint just set.
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child.sendline("run")
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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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# The test is about to end and if we come to here, the child process has
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# been terminated. Mark it so.
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self.child = None
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