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Altera_Forum's avatar
Altera_Forum
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20 years ago

how to use "msgget" in nios2 uclinx?

hi: I use function ret = msgget(KEY_MQ_CORE, IPC_CREAT|0660); make successed. After exec, but the return value is -1 I want to use cmd "IPCS" to check the ipc ID. but shell return: ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

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SysV IPC can not support without MMU.

I am not sure if msg queue is supported in Nios II.

please debug the kernel ipc/ to find out.

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I have a doubt

I use "msgget", "msgsnd" "msgrcv" in winbond arm7 cpu is ok.

The winbond arm7 cpu without MMU.

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There may be bugs for msg queue on Nios2 kernel.