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"""Test lldb's expression evaluations and collect statistics."""
import sys
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbbench import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import configuration
from lldbsuite.test import lldbutil
class ExpressionEvaluationCase(BenchBase):
def setUp(self):
BenchBase.setUp(self)
self.source = "main.cpp"
self.line_to_break = line_number(self.source, "// Set breakpoint here.")
self.count = 25
@benchmarks_test
@add_test_categories(["pexpect"])
def test_expr_cmd(self):
"""Test lldb's expression commands and collect statistics."""
self.build()
self.exe_name = "a.out"
print()
self.run_lldb_repeated_exprs(self.exe_name, self.count)
print("lldb expr cmd benchmark:", self.stopwatch)
def run_lldb_repeated_exprs(self, exe_name, count):
import pexpect
exe = self.getBuildArtifact(exe_name)
# Set self.child_prompt, which is "(lldb) ".
self.child_prompt = "(lldb) "
prompt = self.child_prompt
# Reset the stopwatch now.
self.stopwatch.reset()
for i in range(count):
# So that the child gets torn down after the test.
self.child = pexpect.spawn(
"%s %s %s" % (lldbtest_config.lldbExec, self.lldbOption, exe)
)
child = self.child
# Turn on logging for what the child sends back.
if self.TraceOn():
child.logfile_read = sys.stdout
child.expect_exact(prompt)
child.sendline(
"breakpoint set -f %s -l %d" % (self.source, self.line_to_break)
)
child.expect_exact(prompt)
child.sendline("run")
child.expect_exact(prompt)
expr_cmd1 = "expr ptr[j]->point.x"
expr_cmd2 = "expr ptr[j]->point.y"
with self.stopwatch:
child.sendline(expr_cmd1)
child.expect_exact(prompt)
child.sendline(expr_cmd2)
child.expect_exact(prompt)
child.sendline("quit")
try:
self.child.expect(pexpect.EOF)
except:
pass
self.child = None
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