Suspend and then resume a process in python scrip - Linux
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I am trying to see if there is a way I can suspend and then resume a process in a python script. I get the process pid using os.getpid() and then i suspend the process using suspend(). Is there a way to resume the process without having to manually type "fg" in a shell?
Here is my code:
#!/usr/bin/env python
import time
import psutil
import os
sm_pid = os.getpid()
p = psutil.Process(sm_pid)
print "Going to suspend"
p.suspend()
time.sleep(5)
p.resume()
print "process resumed"
linux process python
edited Nov 27 at 1:15
Rui F Ribeiro
38.4k1477127
asked Nov 27 at 0:45
hama_ROW
11
add a comment |
up vote
0
down vote
favorite
I am trying to see if there is a way I can suspend and then resume a process in a python script. I get the process pid using os.getpid() and then i suspend the process using suspend(). Is there a way to resume the process without having to manually type "fg" in a shell?
Here is my code:
#!/usr/bin/env python
import time
import psutil
import os
sm_pid = os.getpid()
p = psutil.Process(sm_pid)
print "Going to suspend"
p.suspend()
time.sleep(5)
p.resume()
print "process resumed"
linux process python
edited Nov 27 at 1:15
Rui F Ribeiro
38.4k1477127
asked Nov 27 at 0:45
hama_ROW
11
1
What are you trying to accomplish with a suspension that you can't accomplish with a simple sleep?
– BowlOfRed
Nov 27 at 0:58
The sleep is just a placeholder here. I'm trying to "pause" a process and then resume it after receiving a user input through a GUI
– hama_ROW
Nov 28 at 16:42
Suspend probably isn't the right way (because the process can't wake itself up). Normally GUIs have a main loop that will accept input signals and execute callbacks, pausing when none are available (often via select()). I would suspect the specifics of the GUI might matter here.
– BowlOfRed
Nov 28 at 16:51
My GUI is executing callbacks from a main loop but it is running on a separate thread. I'm trying to pause the process on the main thread from the GUI thread and then resume it by sending a command again from the GUI thread.
– hama_ROW
Nov 28 at 17:16
Are these threads separate processes as well? Suspension is per-process, not per-thread. You can't suspend only part of a process. It's possible your question would be better handled by python folks in stackoverflow rather than as a generic unix question.
– BowlOfRed
Nov 28 at 17:46
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
I am trying to see if there is a way I can suspend and then resume a process in a python script. I get the process pid using os.getpid() and then i suspend the process using suspend(). Is there a way to resume the process without having to manually type "fg" in a shell?
Here is my code:
#!/usr/bin/env python
import time
import psutil
import os
sm_pid = os.getpid()
p = psutil.Process(sm_pid)
print "Going to suspend"
p.suspend()
time.sleep(5)
p.resume()
print "process resumed"
linux process python
edited Nov 27 at 1:15
Rui F Ribeiro
38.4k1477127
asked Nov 27 at 0:45
hama_ROW
11
I am trying to see if there is a way I can suspend and then resume a process in a python script. I get the process pid using os.getpid() and then i suspend the process using suspend(). Is there a way to resume the process without having to manually type "fg" in a shell?
Here is my code:
#!/usr/bin/env python
import time
import psutil
import os
sm_pid = os.getpid()
p = psutil.Process(sm_pid)
print "Going to suspend"
p.suspend()
time.sleep(5)
p.resume()
print "process resumed"
linux process python
linux process python
edited Nov 27 at 1:15
Rui F Ribeiro
38.4k1477127
asked Nov 27 at 0:45
hama_ROW
11
edited Nov 27 at 1:15
Rui F Ribeiro
38.4k1477127
asked Nov 27 at 0:45
hama_ROW
11
edited Nov 27 at 1:15
Rui F Ribeiro
38.4k1477127
edited Nov 27 at 1:15
Rui F Ribeiro
38.4k1477127
edited Nov 27 at 1:15
Rui F Ribeiro
38.4k1477127
38.4k1477127
asked Nov 27 at 0:45
hama_ROW
11
asked Nov 27 at 0:45
hama_ROW
11
asked Nov 27 at 0:45
hama_ROW
11
11
1
What are you trying to accomplish with a suspension that you can't accomplish with a simple sleep?
– BowlOfRed
Nov 27 at 0:58
The sleep is just a placeholder here. I'm trying to "pause" a process and then resume it after receiving a user input through a GUI
– hama_ROW
Nov 28 at 16:42
Suspend probably isn't the right way (because the process can't wake itself up). Normally GUIs have a main loop that will accept input signals and execute callbacks, pausing when none are available (often via select()). I would suspect the specifics of the GUI might matter here.
– BowlOfRed
Nov 28 at 16:51
My GUI is executing callbacks from a main loop but it is running on a separate thread. I'm trying to pause the process on the main thread from the GUI thread and then resume it by sending a command again from the GUI thread.
– hama_ROW
Nov 28 at 17:16
Are these threads separate processes as well? Suspension is per-process, not per-thread. You can't suspend only part of a process. It's possible your question would be better handled by python folks in stackoverflow rather than as a generic unix question.
– BowlOfRed
Nov 28 at 17:46
add a comment |
1
What are you trying to accomplish with a suspension that you can't accomplish with a simple sleep?
– BowlOfRed
Nov 27 at 0:58
The sleep is just a placeholder here. I'm trying to "pause" a process and then resume it after receiving a user input through a GUI
– hama_ROW
Nov 28 at 16:42
Suspend probably isn't the right way (because the process can't wake itself up). Normally GUIs have a main loop that will accept input signals and execute callbacks, pausing when none are available (often via select()). I would suspect the specifics of the GUI might matter here.
– BowlOfRed
Nov 28 at 16:51
My GUI is executing callbacks from a main loop but it is running on a separate thread. I'm trying to pause the process on the main thread from the GUI thread and then resume it by sending a command again from the GUI thread.
– hama_ROW
Nov 28 at 17:16
Are these threads separate processes as well? Suspension is per-process, not per-thread. You can't suspend only part of a process. It's possible your question would be better handled by python folks in stackoverflow rather than as a generic unix question.
– BowlOfRed
Nov 28 at 17:46
1
1
What are you trying to accomplish with a suspension that you can't accomplish with a simple sleep?
– BowlOfRed
Nov 27 at 0:58
What are you trying to accomplish with a suspension that you can't accomplish with a simple sleep?
– BowlOfRed
Nov 27 at 0:58
The sleep is just a placeholder here. I'm trying to "pause" a process and then resume it after receiving a user input through a GUI
– hama_ROW
Nov 28 at 16:42
The sleep is just a placeholder here. I'm trying to "pause" a process and then resume it after receiving a user input through a GUI
– hama_ROW
Nov 28 at 16:42
Suspend probably isn't the right way (because the process can't wake itself up). Normally GUIs have a main loop that will accept input signals and execute callbacks, pausing when none are available (often via select()). I would suspect the specifics of the GUI might matter here.
– BowlOfRed
Nov 28 at 16:51
Suspend probably isn't the right way (because the process can't wake itself up). Normally GUIs have a main loop that will accept input signals and execute callbacks, pausing when none are available (often via select()). I would suspect the specifics of the GUI might matter here.
– BowlOfRed
Nov 28 at 16:51
My GUI is executing callbacks from a main loop but it is running on a separate thread. I'm trying to pause the process on the main thread from the GUI thread and then resume it by sending a command again from the GUI thread.
– hama_ROW
Nov 28 at 17:16
My GUI is executing callbacks from a main loop but it is running on a separate thread. I'm trying to pause the process on the main thread from the GUI thread and then resume it by sending a command again from the GUI thread.
– hama_ROW
Nov 28 at 17:16
Are these threads separate processes as well? Suspension is per-process, not per-thread. You can't suspend only part of a process. It's possible your question would be better handled by python folks in stackoverflow rather than as a generic unix question.
– BowlOfRed
Nov 28 at 17:46
Are these threads separate processes as well? Suspension is per-process, not per-thread. You can't suspend only part of a process. It's possible your question would be better handled by python folks in stackoverflow rather than as a generic unix question.
– BowlOfRed
Nov 28 at 17:46
add a comment |
1 Answer
1
active
oldest
votes
up vote
0
down vote
You could start an asynchronous process
that sleeps for five seconds (or whatever)
and then sends a SIGCONT signal to the main process.
answered Nov 27 at 1:18
Scott
6,77642650
add a comment |
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
0
down vote
You could start an asynchronous process
that sleeps for five seconds (or whatever)
and then sends a SIGCONT signal to the main process.
answered Nov 27 at 1:18
Scott
6,77642650
add a comment |
up vote
0
down vote
You could start an asynchronous process
that sleeps for five seconds (or whatever)
and then sends a SIGCONT signal to the main process.
answered Nov 27 at 1:18
Scott
6,77642650
add a comment |
up vote
0
down vote
up vote
0
down vote
You could start an asynchronous process
that sleeps for five seconds (or whatever)
and then sends a SIGCONT signal to the main process.
answered Nov 27 at 1:18
Scott
6,77642650
You could start an asynchronous process
that sleeps for five seconds (or whatever)
and then sends a SIGCONT signal to the main process.
answered Nov 27 at 1:18
Scott
6,77642650
answered Nov 27 at 1:18
Scott
6,77642650
answered Nov 27 at 1:18
Scott
6,77642650
answered Nov 27 at 1:18
Scott
6,77642650
6,77642650
add a comment |
add a comment |
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1
What are you trying to accomplish with a suspension that you can't accomplish with a simple sleep?
– BowlOfRed
Nov 27 at 0:58
The sleep is just a placeholder here. I'm trying to "pause" a process and then resume it after receiving a user input through a GUI
– hama_ROW
Nov 28 at 16:42
Suspend probably isn't the right way (because the process can't wake itself up). Normally GUIs have a main loop that will accept input signals and execute callbacks, pausing when none are available (often via select()). I would suspect the specifics of the GUI might matter here.
– BowlOfRed
Nov 28 at 16:51
My GUI is executing callbacks from a main loop but it is running on a separate thread. I'm trying to pause the process on the main thread from the GUI thread and then resume it by sending a command again from the GUI thread.
– hama_ROW
Nov 28 at 17:16
Are these threads separate processes as well? Suspension is per-process, not per-thread. You can't suspend only part of a process. It's possible your question would be better handled by python folks in stackoverflow rather than as a generic unix question.
– BowlOfRed
Nov 28 at 17:46