[SPDK] Re: How to fix the error generated while generating SPDK thread

Hi,

There is bit more setup needed to be done in order to use spdk_threads, at least spdk_thread_lib_init() is needed.
Even tough bit complex, the nvmf example might be good one for that. Please see:
nvmf_init_threads() in examples/nvmf/nvmf/nvmf.c 

Note: Depending on the goal, Application Framework could be used to simplify the process of preparing the environment.
https://spdk.io/doc/event.html

Thanks,
Tomek

> -----Original Message-----
> From: mostaan.fereidooni(a)gmail.com <mostaan.fereidooni(a)gmail.com>
> Sent: Monday, May 4, 2020 12:48 PM
> To: spdk(a)lists.01.org
> Subject: [SPDK] How to fix the error generated while generating SPDK thread
> 
> Hello I am new with SPDK and have done all the steps mentioned in the
> https://spdk.io/doc/getting_started.html completely and without observing
> any errors.
> 
> But when I run the following simple code on my system #include <stdio.h>
> #include <spdk/bdev.h> #include <spdk/thread.h> #include
> <spdk/queue.h>
> 
> void main()
> {
> 
>     struct spdk_thread* first_reader_thread =
>             spdk_thread_create("first_reader_thread", NULL);
> 
>     if (first_reader_thread == NULL)
>     {
>         printf("First thread creation failed...\n");
>         return ;
>     }
> 
>     struct spdk_thread* second_reader_thread =
>             spdk_thread_create("second_reader_thread", NULL);
>     if (second_reader_thread == NULL)
>     {
>         printf("Second thread creation failed...\n");
>         return ;
>     }
> 
>     printf("first reader thread id is: %"PRIu64"\n",
>            spdk_thread_get_id(first_reader_thread));
>     printf("second reader thread id is: %"PRIu64"\n",
>            spdk_thread_get_id(second_reader_thread));
>     printf("Hello World!\n");
>     return;
> }
> 
> I get the following error:
> 
> "RING: Cannot reserve memory for tailq,
> thread.c: 260:spdk_thread_create: ERROR: Unable to allocate memory for
> message ring, First thread creation failed..."
> 
> it will be appraciated if anyone can guide me to fix this error.
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