vendor/lldb/lldb-trunk-r256945

1 files changed, 80 insertions, 0 deletions

diff --git a/packages/Python/lldbsuite/test/benchmarks/startup/TestStartupDelays.py b/packages/Python/lldbsuite/test/benchmarks/startup/TestStartupDelays.py
new file mode 100644
index 0000000000000..a215721ed52fd
--- /dev/null
+++ b/packages/Python/lldbsuite/test/benchmarks/startup/TestStartupDelays.py
@@ -0,0 +1,80 @@
+"""Test lldb's startup delays creating a target, setting a breakpoint, and run to breakpoint stop."""
+
+from __future__ import print_function
+
+
+
+import os, sys
+import lldb
+from lldbsuite.test import configuration
+from lldbsuite.test import lldbtest_config
+from lldbsuite.test.lldbbench import *
+
+class StartupDelaysBench(BenchBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    def setUp(self):
+        BenchBase.setUp(self)
+        # Create self.stopwatch2 for measuring "set first breakpoint".
+        # The default self.stopwatch is for "create fresh target".
+        self.stopwatch2 = Stopwatch()
+        # Create self.stopwatch3 for measuring "run to breakpoint".
+        self.stopwatch3 = Stopwatch()
+        self.exe = lldbtest_config.lldbExec
+        self.break_spec = '-n main'
+        self.count = 30
+
+    @benchmarks_test
+    @no_debug_info_test
+    @expectedFailureWindows("llvm.org/pr22274: need a pexpect replacement for windows")
+    def test_startup_delay(self):
+        """Test start up delays creating a target, setting a breakpoint, and run to breakpoint stop."""
+        print()
+        self.run_startup_delays_bench(self.exe, self.break_spec, self.count)
+        print("lldb startup delay (create fresh target) benchmark:", self.stopwatch)
+        print("lldb startup delay (set first breakpoint) benchmark:", self.stopwatch2)
+        print("lldb startup delay (run to breakpoint) benchmark:", self.stopwatch3)
+
+    def run_startup_delays_bench(self, exe, break_spec, count):
+        import pexpect
+        # Set self.child_prompt, which is "(lldb) ".
+        self.child_prompt = '(lldb) '
+        prompt = self.child_prompt
+
+        # Reset the stopwatchs now.
+        self.stopwatch.reset()
+        self.stopwatch2.reset()
+        for i in range(count):
+            # So that the child gets torn down after the test.
+            self.child = pexpect.spawn('%s %s' % (lldbtest_config.lldbExec, self.lldbOption))
+            child = self.child
+
+            # Turn on logging for what the child sends back.
+            if self.TraceOn():
+                child.logfile_read = sys.stdout
+
+            with self.stopwatch:
+                # Create a fresh target.
+                child.sendline('file %s' % exe) # Aka 'target create'.
+                child.expect_exact(prompt)
+
+            with self.stopwatch2:
+                # Read debug info and set the first breakpoint.
+                child.sendline('breakpoint set %s' % break_spec)
+                child.expect_exact(prompt)
+
+            with self.stopwatch3:
+                # Run to the breakpoint just set.
+                child.sendline('run')
+                child.expect_exact(prompt)
+
+            child.sendline('quit')
+            try:
+                self.child.expect(pexpect.EOF)
+            except:
+                pass
+
+        # The test is about to end and if we come to here, the child process has
+        # been terminated.  Mark it so.
+        self.child = None