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ipcBeginProcess asynchronously execution code

rttturn

Hi,

 Cadance Allegro 17.2， Win10 x64

I am using ipcSkillProcess to communication with a .exe. I found that I need executed any line of command before the callback function is executed.

I can't get messages automatically.I want to implement exe to actively invoke skill to execute a particular program.

like the picture,

1. skill receive  "hello skill ipc,send data1&*()\\r\\r\\n"

2. I use ipcWriteProcess to send "ack1 \n"

3. .exe receive the message  "ack1 \n", send "get ack1,send data2" to skill

4. skill can't receive the message. if I executed any line of command(printf("111test")), I get the message "get ack1,send data2"

I'm upset about this problem ......

skill code:
cid = ipcBeginProcess("skill.exe" "" `ipc_callback `ipc_err `ipc_exit "skill.log")
procedure(ipc_callback(@rest ipc_callback_args)
    printf("--ipc begin receive--\n")
    printf("list length:%d\n" length(ipc_callback_args))
    printf("%s\n" car(ipc_callback_args))
    printf(nth(1 ipc_callback_args))        
    printf("--ipc receive end--\n")
)
.exe(python) code:
import sys
sys.stdout.write("hello skill ipc,send data1&*()\n")
sys.stdout.flush()
c = sys.stdin.readline()
if c == 'ack1 \n':
sys.stdout.write('get ack1,send data2')
sys.stdout.flush()
shell result:

 

 Thank you,

rtttune

  • mahimag
    0

    Hello As I understand, you are trying to use IPC between SKILL and Python. In your code I see, by using IpcBeginProcess in skill you are calling SKILL executable, can you share some more details about the requirement here?

  • rttturn
    0 in reply to mahimag

    I made an example to repeat the problem：

    --SKILL code：

    axlCmdRegister("test" 'test111)

    procedure( dataH(cid data)
    printf("cid: %L Msg: %s\n" cid data)
    ipcWriteProcess( cid "ack1 \n" )
    )

    procedure( simErr(cid err)
    printf("Error %L Msg: %s\n" cid err)
    ipcKillProcess(cid)
    )

    procedure( simTerm(cid exit)
    printf("Simulator expired with exit status = %L %d\n" cid exit)
    )

    procedure( test111()
    cid = ipcBeginProcess("D:\\skill Shell\\PY\\dist\\skill1.exe" "" "dataH" "simErr" "simTerm" "")
    )
    --PY code(Compiled to skill1.exe using pyinstaller)：
    import sys
    sys.stdout.write("hello skill ipc,send data1&*()\n")
    sys.stdout.flush()
    c = sys.stdin.readline()
    if c == 'ack1 \n':
    sys.stdout.write('get ack1,send data2')
     sys.stdout.flush()
    --allegro shell export：(only can receive message before execute the code "x=1" in shell)
  • Kirti Sikri
    0 in reply to rttturn

    Hello Eugene,

    Thanks for sending the code

    I have got following message on the Allegro Command window modying the code you shared.

    Code (skill and python are given below) 

    Does it meet your requirements

    test.py:

    import sys

    sys.stdout.write("ABC hello skill ipc,send data1&*()\n")
    sys.stdout.flush()

    c = sys.stdin.readline()

    if c == 'ack1 \n':
    sys.stdout.write('get ack1,send data2')
    sys.stdout.flush()

    test.il:

    Call program test.py from ipcBeginProcess with full path.

    axlCmdRegister("test" 'test111)

    procedure( dataH(cid data)
    printf("cid: %L Msg: %s\n" cid data)
    ipcWriteProcess( cid "ack1 \n" )
    )

    procedure( simErr(cid err)
    printf("Error %L Msg: %s\n" cid err)
    ipcKillProcess(cid)
    )

    procedure( simTerm(cid exit)
    printf("Simulator expired with exit status = %L %d\n" cid exit)
    (drain (inSkill stdout))
    )

    procedure( test111()
    cid = ipcBeginProcess("C:/Python/python test.py" "" 'dataH 'simErr 'simTerm)
    )

    Thanks,

    Kirti

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