Any idea of stopping the execution of PyRun_File()

B

BigHand

Hi,All
I have an embedded python application. which is a MFC app with
Python interpreter embedded.

In the App, I have a separate thread to execute a Python script
(using the PyRun_File), but if the user want to stop the executing
script, how should I do?

A possible way is terminate the thread of executing the scripts by
TerminateThread(). but TerminateThread() is unsafe and not
recommended.

guys, could you guide me on this?

B.R.
Harry
 
G

Gabriel Genellina

En Mon said:
I have an embedded python application. which is a MFC app with
Python interpreter embedded.

In the App, I have a separate thread to execute a Python script
(using the PyRun_File), but if the user want to stop the executing
script, how should I do?

A possible way is terminate the thread of executing the scripts by
TerminateThread(). but TerminateThread() is unsafe and not
recommended.

guys, could you guide me on this?
Click to expand...

You could use PyThreadState_SetAsyncExc (to "inject" an exception), or
perhaps PyErr_SetInterrupt (to emulate ^C, which in turn generates a
KeyboardInterrupt). This should work fine for well-behaved scripts, but if
it ignores all exceptions like this:
try: ...
except: pass
you'll have to look at ceval.c how to break out of the running loop.

(this is yet another argument against indiscriminately using a bare except
clause...)
 
K

kongcheng1400

You could use PyThreadState_SetAsyncExc (to "inject" an exception), or  
perhaps PyErr_SetInterrupt (to emulate ^C, which in turn generates a  
KeyboardInterrupt). This should work fine for well-behaved scripts, but if  
it ignores all exceptions like this:
        try: ...
        except: pass
you'll have to look at ceval.c how to break out of the running loop.

(this is yet another argument against indiscriminately using a bare except  
clause...)
Click to expand...

Thanks Very much, You are always kindly helping me.
 
B

BigHand

You could use PyThreadState_SetAsyncExc (to "inject" an exception), or  
perhaps PyErr_SetInterrupt (to emulate ^C, which in turn generates a  
KeyboardInterrupt). This should work fine for well-behaved scripts, but if  
it ignores all exceptions like this:
        try: ...
        except: pass
you'll have to look at ceval.c how to break out of the running loop.

(this is yet another argument against indiscriminately using a bare except  
clause...)
Click to expand...

hello.Gabriel.
PyThreadState_SetAsyncExc cause me a win32 exception of "Stack
overflow"
msvcr80d.dll!_getptd_noexit() Line 592 C
Click to expand...
msvcr80d.dll!_getptd() Line 658 + 0x5 bytes C
msvcr80d.dll!_LocaleUpdate::_LocaleUpdate(localeinfo_struct *
plocinfo=0x00000000) Line 264 + 0x5 bytes C++
msvcr80d.dll!_output_l(_iobuf * stream=0x10311d40, const char *
format=0x1e26e0ac, localeinfo_struct * plocinfo=0x00000000, char *
argptr=0x000333c4) Line 1028 C++
msvcr80d.dll!fprintf(_iobuf * str=0x10311d40, const char *
format=0x1e26e0ac, ...) Line 70 + 0x13 bytes C
python30_d.dll!Py_FatalError(const char * msg=0x1e26a2d4) Line 2000
+ 0x19 bytes C
python30_d.dll!PyThreadState_Get() Line 349 + 0xa bytes C
python30_d.dll!PyErr_Occurred() Line 133 + 0x5 bytes C
python30_d.dll!Py_FatalError(const char * msg=0x1e26a2d4) Line 2001
+ 0x5 bytes C
python30_d.dll!PyThreadState_Get() Line 349 + 0xa bytes C
python30_d.dll!PyErr_Occurred() Line 133 + 0x5 bytes C
python30_d.dll!Py_FatalError(const char * msg=0x1e26a2d4) Line 2001
+ 0x5 bytes C
python30_d.dll!PyThreadState_Get() Line 349 + 0xa bytes C
python30_d.dll!PyErr_Occurred() Line 133 + 0x5 bytes C
python30_d.dll!Py_FatalError(const char * msg=0x1e26a2d4) Line 2001
+ 0x5 bytes C
python30_d.dll!PyThreadState_Get() Line 349 + 0xa bytes C
python30_d.dll!PyErr_Occurred() Line 133 + 0x5 bytes C
python30_d.dll!Py_FatalError(const char * msg=0x1e26a2d4) Line 2001
+ 0x5 bytes C
python30_d.dll!PyThreadState_Get() Line 349 + 0xa bytes C
python30_d.dll!PyErr_Occurred() Line 133 + 0x5 bytes C
python30_d.dll!Py_FatalError(const char * msg=0x1e26a2d4) Line 2001
+ 0x5 bytes C
python30_d.dll!PyThreadState_Get() Line 349 + 0xa bytes C
python30_d.dll!PyErr_Occurred() Line 133 + 0x5 bytes C
python30_d.dll!Py_FatalError(const char * msg=0x1e26a2d4) Line 2001
+ 0x5 bytes C
python30_d.dll!PyThreadState_Get() Line 349 + 0xa bytes C

My app is a MFC app, it have the main thread and the sub thread, the
sub thread run the script(Py_RunFile),
That I am looking for a way to stop the Py_RunFile from the main
thread.
that looks like I have to use the TerminateThread() .

thanks.Gabriel, could you find some example for me?
 
D

David Shapiro

Hello,

I have been trying to find an example of how to deal with options that have spaces in them. I am using jython, which is the same I think as python 2.2.3. I feebly tried to use optparse and argparse with no success (got gettext, locale, and optparse). The code is as follows:

try:
(opts, args) = getopt.getopt(sys.argv[1:], "hs:p:n:j:d:l:u:c:t:w:q:v",
["help", "server=", "port=", "dsName=","jndiName=","driverName=","driverURL=","user=","passWD=","targetServer=","whereProp=","testTableName=","version"])
except getopt.GetoptError:
usage()

for opt in opts:
(key, value) = opt
if (key in ("-v", "--version")):
print "Version: " + version
sys.exit(1)
if (key in ("-h", "--help")):
usage()
if (key in ("-s", "--server")):
server = value
if (key in ("-p", "--port")):
port = value
if (key in ("-n", "--dsName")):
dsName = value
if (key in ("-j", "--jndiName")):
jndiName = value
if (key in ("-d", "--driverName")):
driverName = value
if (key in ("-l", "--driverURL")):
driverURL = value
if (key in ("-u", "--user")):
user = value
if (key in ("-c", "--passWD")):
passWD = value
if (key in ("-t", "--targetServer")):
targetServer = value
if (key in ("-q", "--testTableName")):
testTableName = value
if (key in ("-w", "--whereProp")):
whereProp = value


print "server: " + server
print "port: " + port
print "dsName: " + dsName
print "jndiName: " + jndiName
print "driverName: " + driverName
print "driverURL: " + driverURL
print "user: " + user
print "passWD: " + passWD
print "testtable: " + testTableName
print "targetServer: " + targetServer
print "whereProp: " + whereProp

The one that gives me trouble is with the -q option, because it can look like: -q "SQL 1 TABLE". It returns back just SQL. How do I get it to return the whole thing that is in double quotes? Another problem is that whereProp value is just not seen. Is there a limit to the size for argv?

If I use optparse instead of getopt, I see that SQL 1 TABLE goes into args instead of values by the way. A temporary workaround is to use " ".join(args) and assign that to testTableName, but I worry about what will happen if testTableName is blank or has something with no spaces. Also, it just seem weird I have to do a work around like that. I could have swore using double quotes should have fixed this issue, but they do not seem to work.

David
 
J

Javier Collado

Hello,

It's strange behaviour. Have you tried argparse
(http://code.google.com/p/argparse/)? I've been using it for long time
without any problem like that?

Best regards,
Javier

2009/6/10 David Shapiro said:
Hello,

I have been trying to find an example of how to deal with options that have spaces in them.  I am using jython, which is the same I think as python 2.2.3.   I feebly tried to use optparse and argparse with no success (got gettext, locale, and optparse).   The code is as follows:

   try:
       (opts, args) = getopt.getopt(sys.argv[1:], "hs:p:n:j:d:l:u:c:t:w:q:v",
["help", "server=", "port=", "dsName=","jndiName=","driverName=","driverURL=","user=","passWD=","targetServer=","whereProp=","testTableName=","version"])
   except getopt.GetoptError:
       usage()

   for opt in opts:
       (key, value) = opt
       if (key in ("-v", "--version")):
               print "Version: " + version
               sys.exit(1)
       if (key in ("-h", "--help")):
               usage()
       if (key in ("-s", "--server")):
               server = value
       if (key in ("-p", "--port")):
               port = value
       if (key in ("-n", "--dsName")):
               dsName = value
       if (key in ("-j", "--jndiName")):
               jndiName = value
       if (key in ("-d", "--driverName")):
               driverName = value
       if (key in ("-l", "--driverURL")):
               driverURL = value
       if (key in ("-u", "--user")):
               user = value
       if (key in ("-c", "--passWD")):
               passWD = value
       if (key in ("-t", "--targetServer")):
               targetServer = value
       if (key in ("-q", "--testTableName")):
               testTableName = value
       if (key in ("-w", "--whereProp")):
               whereProp = value


print "server: " + server
print "port: " + port
print "dsName: " + dsName
print "jndiName: " + jndiName
print "driverName: " + driverName
print "driverURL: " + driverURL
print "user: " + user
print "passWD: " + passWD
print "testtable: " + testTableName
print "targetServer: " + targetServer
print "whereProp: " + whereProp

The one that gives me trouble is with the -q option, because it can look like: -q "SQL 1 TABLE".  It returns back just SQL.  How do I get it to return the whole thing that is in double quotes?  Another problem is that whereProp value is just not seen. Is there a limit to the size for argv?

If I use optparse instead of getopt, I see that SQL 1 TABLE goes into args instead of values by the way.  A temporary workaround is to use " ".join(args) and assign that to testTableName, but I worry about what will happen if testTableName is blank or has something with no spaces.  Also, it just seem weird I have to do a work around like that.  I could have swore using double quotes should have fixed this issue, but they do not seem to work.

David
Click to expand...
 
D

David Shapiro

Unfortunately, I had no luck installing argparse, which is really confusing because I would need to use some old version pre-optik to use I think. The Jython I use is like python 2.2.3. I spent all of yesterday trying to get either getopt, argparse, or optparse to work. Even with optparse I had to modify a module. For example, in textwrap.py, they have

@ line 124 in the module:

if self.replace_whitespace:
#if isinstance(text,str):
# text = text.translate(self.whitespace_trans)
#elif isinstances(text,Unicode):
text = text.translate(self.unicode_whitespace_trans)
return text

I had to comment out the if isinstance(text,str) and elif. Is the double quotes supposed to work?

-----Original Message-----
From: Javier Collado [mailto:[email protected]]
Sent: Wednesday, June 10, 2009 9:38 AM
To: David Shapiro
Cc: (e-mail address removed)
Subject: Re: getop or optparse with option with spaces?

Hello,

It's strange behaviour. Have you tried argparse
(http://code.google.com/p/argparse/)? I've been using it for long time
without any problem like that?

Best regards,
Javier

2009/6/10 David Shapiro said:
Hello,

I have been trying to find an example of how to deal with options that have spaces in them.  I am using jython, which is the same I think as python 2.2.3.   I feebly tried to use optparse and argparse with no success (got gettext, locale, and optparse).   The code is as follows:

   try:
       (opts, args) = getopt.getopt(sys.argv[1:], "hs:p:n:j:d:l:u:c:t:w:q:v",
["help", "server=", "port=", "dsName=","jndiName=","driverName=","driverURL=","user=","passWD=","targetServer=","whereProp=","testTableName=","version"])
   except getopt.GetoptError:
       usage()

   for opt in opts:
       (key, value) = opt
       if (key in ("-v", "--version")):
               print "Version: " + version
               sys.exit(1)
       if (key in ("-h", "--help")):
               usage()
       if (key in ("-s", "--server")):
               server = value
       if (key in ("-p", "--port")):
               port = value
       if (key in ("-n", "--dsName")):
               dsName = value
       if (key in ("-j", "--jndiName")):
               jndiName = value
       if (key in ("-d", "--driverName")):
               driverName = value
       if (key in ("-l", "--driverURL")):
               driverURL = value
       if (key in ("-u", "--user")):
               user = value
       if (key in ("-c", "--passWD")):
               passWD = value
       if (key in ("-t", "--targetServer")):
               targetServer = value
       if (key in ("-q", "--testTableName")):
               testTableName = value
       if (key in ("-w", "--whereProp")):
               whereProp = value


print "server: " + server
print "port: " + port
print "dsName: " + dsName
print "jndiName: " + jndiName
print "driverName: " + driverName
print "driverURL: " + driverURL
print "user: " + user
print "passWD: " + passWD
print "testtable: " + testTableName
print "targetServer: " + targetServer
print "whereProp: " + whereProp

The one that gives me trouble is with the -q option, because it can look like: -q "SQL 1 TABLE".  It returns back just SQL.  How do I get it to return the whole thing that is in double quotes?  Another problem is that whereProp value is just not seen. Is there a limit to the size for argv?

If I use optparse instead of getopt, I see that SQL 1 TABLE goes into args instead of values by the way.  A temporary workaround is to use " ".join(args) and assign that to testTableName, but I worry about what will happen if testTableName is blank or has something with no spaces.  Also, it just seem weird I have to do a work around like that.  I could have swore using double quotes should have fixed this issue, but they do not seem to work.

David
Click to expand...
 

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