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Allow command retries in case of process launch failures. This recovery

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mechanism seems to work fine on my MacBook Pro in some limited test cases.

The default maxLaunchCount and timeWait variables used in the scheme can be
overridden by the env variables LLDB_MAX_LAUNCH_COUNT and LLDB_TIME_WAIT.

llvm-svn: 112071
This commit is contained in:
Johnny Chen 2010-08-25 18:49:48 +00:00
parent 0de55cecb2
commit f2b70237e6
1 changed files with 29 additions and 8 deletions
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37
lldb/test/lldbtest.py
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@ -107,6 +107,7 @@ $
import os
import sys
import time
import unittest2
import lldb
@ -150,6 +151,14 @@ class TestBase(unittest2.TestCase):
# State pertaining to the inferior process, if any.
runStarted = False
# Maximum allowed attempts when launching the inferior process.
# Can be overridden by the LLDB_MAX_LAUNCH_COUNT environment variable.
maxLaunchCount = 3;
# Time to wait before the next launching attempt in second(s).
# Can be overridden by the LLDB_TIME_WAIT environment variable.
timeWait = 1.0;
# os.environ["LLDB_COMMAND_TRACE"], if set to "YES", will turn on this flag.
traceAlways = False;
@ -168,6 +177,12 @@ class TestBase(unittest2.TestCase):
if ("LLDB_TEST" in os.environ):
os.chdir(os.path.join(os.environ["LLDB_TEST"], self.mydir));
if "LLDB_MAX_LAUNCH_COUNT" in os.environ:
self.maxLaunchCount = int(os.environ["LLDB_MAX_LAUNCH_COUNT"])
if "LLDB_TIME_WAIT" in os.environ:
self.timeWait = float(os.environ["LLDB_TIME_WAIT"])
if ("LLDB_COMMAND_TRACE" in os.environ and
os.environ["LLDB_COMMAND_TRACE"] == "YES"):
self.traceAlways = True
@ -213,19 +228,25 @@ class TestBase(unittest2.TestCase):
trace = (True if self.traceAlways else trace)
if trace:
print >> sys.stderr, "runCmd:", cmd
self.runStarted = (cmd.startswith("run") or
cmd.startswith("process launch"))
self.ci.HandleCommand(cmd, self.res)
for i in range(self.maxLaunchCount if self.runStarted else 1):
self.ci.HandleCommand(cmd, self.res)
if cmd.startswith("run"):
self.runStarted = True
if trace:
print >> sys.stderr, "runCmd:", cmd
if self.res.Succeeded():
print >> sys.stderr, "output:", self.res.GetOutput()
else:
print >> sys.stderr, self.res.GetError()
if trace:
if self.res.Succeeded():
print >> sys.stderr, "output:", self.res.GetOutput()
break
else:
print >> sys.stderr, self.res.GetError()
if self.runStarted:
# Process launch failed, wait some time before the next try.
time.sleep(self.timeWait)
if check:
self.assertTrue(self.res.Succeeded(),