Revert r81012. buildbot problems and its questionable of me to even
add this to trunk while we're on the way to 2.7rc1. When fixed this can go into py3k first. Sorry.
This commit is contained in:
Gregory P. Smith
parent
56fe6569fd
commit
860852fdf4
38
Lib/pdb.py
38
Lib/pdb.py
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@ -13,7 +13,6 @@ import os
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import re
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import pprint
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import traceback
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import signal
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class Restart(Exception):
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@ -73,8 +72,6 @@ class Pdb(bdb.Bdb, cmd.Cmd):
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import readline
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except ImportError:
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pass
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self.allow_kbdint = False
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signal.signal(signal.SIGINT, self.sigint_handler)
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# Read $HOME/.pdbrc and ./.pdbrc
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self.rcLines = []
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@ -107,13 +104,6 @@ class Pdb(bdb.Bdb, cmd.Cmd):
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self.commands_bnum = None # The breakpoint number for which we are
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# defining a list
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def sigint_handler(self, signum, frame):
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if self.allow_kbdint:
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raise KeyboardInterrupt()
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print >>self.stdout, "\nProgram interrupted. (Use 'cont' to resume)."
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self.set_step()
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self.set_trace(frame)
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def reset(self):
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bdb.Bdb.reset(self)
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self.forget()
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@ -186,7 +176,7 @@ class Pdb(bdb.Bdb, cmd.Cmd):
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if not self.commands_silent[currentbp]:
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self.print_stack_entry(self.stack[self.curindex])
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if self.commands_doprompt[currentbp]:
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self._cmdloop()
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self.cmdloop()
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self.forget()
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return
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return 1
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@ -209,22 +199,11 @@ class Pdb(bdb.Bdb, cmd.Cmd):
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self.interaction(frame, exc_traceback)
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# General interaction function
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def _cmdloop(self):
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while 1:
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try:
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# keyboard interrupts allow for an easy way to interrupt
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# the current command
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self.allow_kbdint = True
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self.cmdloop()
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self.allow_kbdint = False
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break
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except KeyboardInterrupt:
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print >>self.stdout, '--KeyboardInterrupt--'
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def interaction(self, frame, traceback):
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self.setup(frame, traceback)
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self.print_stack_entry(self.stack[self.curindex])
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self._cmdloop()
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self.cmdloop()
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self.forget()
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def displayhook(self, obj):
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@ -350,20 +329,7 @@ class Pdb(bdb.Bdb, cmd.Cmd):
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prompt_back = self.prompt
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self.prompt = '(com) '
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self.commands_defining = True
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try:
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self.cmdloop()
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except (KeyboardInterrupt, IOError):
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# It appears that that when pdb is reading input from a pipe
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# we may get IOErrors, rather than KeyboardInterrupt.
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# Now discard all the commands entered so far (essentially undo
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# any effect of this "commands" cmd)
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self.commands.pop(bnum)
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self.commands_doprompt.pop(bnum)
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self.commands_silent.pop(bnum)
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# this will get caught by the _cmdloop and pdb will reenter
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# the main command loop
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raise KeyboardInterrupt()
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finally:
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self.commands_defining = False
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self.prompt = prompt_back
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@ -1,197 +0,0 @@
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#!/usr/bin/env python
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# pdb tests in the Lib/test style
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import os
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import sys
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import time
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import re
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import subprocess
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import signal
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from test.test_support import TESTFN
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import test.test_support
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import unittest
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# allow alt pdb locations, if environment variable is specified then
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# the test files will be stored in t/ directory and will not be deleted
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# after pdb run
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DEBUG_PDB = os.environ.get("_DEBUG_PDB", None)
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TMP_DIR = "./t" # dir for tmp files if DEBUG_PDB is set
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if DEBUG_PDB:
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if not os.path.exists(TMP_DIR):
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os.mkdir(TMP_DIR)
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def _write_test_file(testname, text):
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filename = TESTFN
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if DEBUG_PDB:
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filename = os.path.join(TMP_DIR, testname)
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with open(filename, "wt") as f:
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f.write(text+"\n")
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return filename
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class PdbProcess(object):
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def __init__(self, testname, testprg):
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self.testname = testname
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self.filename = _write_test_file(testname, testprg)
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# unbuffer pdb.py output (if it gets any ideas to buffer it)
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# make sure that we use the same interpreter to run tests wrapper and
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# pdb itself
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cmd = [sys.executable, '-u']
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if DEBUG_PDB:
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cmd.append(DEBUG_PDB)
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else:
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cmd.extend(['-m', 'pdb'])
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cmd.append(self.filename)
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self.pdbhandle = subprocess.Popen(cmd, bufsize=0,
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.STDOUT)
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self.startup_msg = self.wait_for_prompt()
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self.finished=0
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def wait_for_normal_exit(self, timeout=2):
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"""wait for pdb subprocess to exit, timeout is in seconds"""
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step = 0.1
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for i in range(int(timeout/step)):
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status=self.pdbhandle.poll()
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if status is not None:
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break
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time.sleep(step)
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if status is -1:
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describe = "pdb has not exited"
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elif status> 0:
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describe = "pdb exited abnormally with status=%d" % status
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assert status == 0, describe
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def wait_for_line(self, stopline, alt_stopline=None):
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output=''
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line=''
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while 1 :
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ch=self.pdbhandle.stdout.read(1)
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# sys.stdout.write(ch)
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line += ch
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if line == stopline or line == alt_stopline:
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return output
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if ch == '\n':
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output += line
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line=''
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if ch == '':#eof
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output += line
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return output
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# note: this can block if issued at the wrong time
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def wait_for_prompt(self):
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"""collect any output from pdb session til the prompt is encountered.
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Return this output (exlcuding prompt)"""
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return self.wait_for_line("(Pdb) ", "(com) ")
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def send_cmd(self, cmd):
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"""send a command but do not wait for response"""
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#print "sending:", cmd
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self.pdbhandle.stdin.write(cmd+"\n")
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def cmd(self, cmd, response_text=""):
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"""send a single command to pdb, collect pdb response (by waiting
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for the next prompt). Verify that response contains specified
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response_text"""
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self.pdbhandle.stdin.write(cmd+"\n")
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response = self.wait_for_prompt()
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if not response_text:
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return response
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if DEBUG_PDB:
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print "%s: testing response for '%s':" % (self.testname,cmd),
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assert response.find(response_text) >= 0, (
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"response:\n%s\n does not contain expected substring '%s'" %
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(response, response_text))
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if DEBUG_PDB:
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print "Ok"
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return response
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def send_kbdint(self):
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# os.kill is Posix-specific. We could have used a X-platform
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# send_signal method of Popen objects, but it still cann't send
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# SIGINT on win32 and it's not present on python2.5
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# self.pdbhandle.send_signal(signal.SIGINT)
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os.kill(self.pdbhandle.pid, signal.SIGINT)
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def __del__(self):
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# if pdb is still running, kill it, leaving it running does not serve
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# any useful purpose
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if self.pdbhandle.poll() is None:
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self.pdbhandle.send_signal(signal.SIGTERM)
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if not DEBUG_PDB:
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os.unlink(self.filename)
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return self.pdbhandle.wait()
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class PdbTest(unittest.TestCase):
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def test_00startup(self):
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pdb = PdbProcess("pdb_t_startup", "print 'Hello, world'")
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pdb.cmd("r", "Hello, world")
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pdb.cmd("q")
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pdb.wait_for_normal_exit()
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@unittest.skipIf(sys.platform.startswith("win"),
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"test_sigint requires a posix system.")
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def test_sigint(self):
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pdb = PdbProcess("pdb_t_loop", """\
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for i in xrange(100000000):
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print 'i=%d' %i
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""" )
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# first, test Ctrl-C/kbdint handling while the program is running
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# kbdint should interrupt the program and return to pdb prompt,
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# the program must be resumable
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pdb.send_cmd("c")
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# we could use time.sleep() delays but they are not reliable so you
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# end up with making them much longer than necessary (and still failing
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# from time to time)
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pdb.wait_for_line("i=19")
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pdb.send_kbdint()
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pdb.wait_for_prompt()
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response = pdb.cmd('p "i=%d" % i')
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m = re.search('i=(\d+)', response)
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assert m, "unexpected response %s" % response
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i0 = int(m.group(1))
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pdb.send_cmd("c")
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pdb.wait_for_line("i=%d" % (i0+99))
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pdb.send_kbdint()
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pdb.wait_for_prompt()
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response = pdb.cmd('p "i=%d" % i')
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m = re.search('i=(\d+)', response)
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assert m, "unexpected response %s" % response
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i1 = int(m.group(1))
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assert i1 > i0
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# now test kbd interrupts in interactive mode, they should interrupt
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# the current cmd
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# simple case: just generate kdbint
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pdb.send_kbdint()
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pdb.wait_for_prompt()
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pdb.cmd("p 'hello'", "hello") # check that we are at prompt
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# more complicated case: Ctrl-C while defining bp commands
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# interrupted commands should have no effect
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pdb.cmd("b 2")
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pdb.cmd("commands 1")
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pdb.cmd("p 'marker'")
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pdb.send_kbdint()
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pdb.wait_for_prompt()
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pdb.cmd("p 'hello'", "hello") # check that we are back at normal prompt
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pdb.send_cmd("c")
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response = pdb.wait_for_prompt()
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assert not re.search("marker", response, re.I), (
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"unexpected response '%s'" % response)
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pdb.cmd("p 'hello'", "hello") #check that we are back at prompt
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pdb.send_cmd("q")
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pdb.wait_for_normal_exit()
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def test_main():
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test.test_support.run_unittest(PdbTest)
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if __name__ == "__main__":
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test_main()
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