RE: [ECOS] Re: listing all threads

["Zimman, Chris" <czimman at bloomberg dot com>]

We wrote this little function you may find useful:

#include <cyg/infra/cyg_type.h>
#include <cyg/hal/var_ints.h>
#include <cyg/kernel/kapi.h>

static const unsigned char * const thread_state_str[] = {
    "RUN",      /* 0 - Running */
    "SLEEP",    /* 1 - Sleeping */
    "CNTSLP",   /* 2 - Counted sleep */
    "SLPSET",   /* 3 - Sleep set */     
    "SUSP",     /* 4 - Suspended */
    NULL,       /* 5 - INVALID */
    NULL,       /* 6 - INVALID */
    NULL,       /* 7 - INVALID */
    "CREAT",    /* 8 - Creating */
    NULL,       /* 9 - INVALID */
    NULL,       /* 10 - INVALID */
    NULL,       /* 11 - INVALID */
    NULL,       /* 12 - INVALID */
    NULL,       /* 13 - INVALID */
    NULL,       /* 14 - INVALID */
    NULL,       /* 15 - INVALID */
    "EXIT"      /* 16 - Exiting */
};

/*
 * This function produces a list of the threads
 * that are currently scheduled.  The output is roughly
 * analagous to 'ps', with the exception of VSS for obvious
 * reasons
 */

void get_thread_info()
{
    cyg_handle_t thandle = 0, *thandleptr = &thandle;
    cyg_uint16 tid;
    cyg_thread_info tinfo;

    /*
     * Because we're running this on ourselves,
     * it's basically guaranteed to be OK the first
     * time through
     */
    cyg_thread_get_next(thandleptr, &tid);

    printf("%-8s %-2s %-6s %-15s %-2s %-2s %-10s %-10s %-10s\n",
               "-------",
               "--",
               "------",
               "----------------------",
               "--",
               "--",
               "----------",
               "----------",
               "----------");
    printf("%-8s %-2s %-6s %-22s %-2s %-2s %-10s %-10s %-10s\n",
               "Handle",
               "ID",
               "State",
               "Name",
               "SP",
               "CP",
               "Stack Base",
               "Stack Size",
               "Stack Used");
    printf("%-8s %-2s %-6s %-22s %-2s %-2s %-10s %-10s %-10s\n",
               "-------",
               "--",
               "------",
               "----------------------",
               "--",
               "--",
               "----------",
               "----------",
               "----------");

    do {
        cyg_thread_get_info(*thandleptr, tid, &tinfo);
        
        printf("%-8d %-2d %-6s %-22s %-2d %-2d 0x%08x 0x%08x 0x%08x\n",
                   tinfo.handle,
                   tinfo.id,
                   thread_state_str[tinfo.state],
                   tinfo.name,
                   tinfo.set_pri,
                   tinfo.cur_pri,
                   tinfo.stack_base,
                   tinfo.stack_size,
                   tinfo.stack_used);
    } while(cyg_thread_get_next(thandleptr, &tid));

#if defined(THREADINFO_DEBUG)
    printf("Here I am:\n");
    printf("Handle-> %d\n", tinfo.handle);
    printf("ID-> %d\n", tinfo.id);
    printf("State-> 0x%08x\n", tinfo.state);
    printf("Name-> '%s'\n", tinfo.name);
    printf("Set Priority-> 0x%08x\n", tinfo.set_pri);
    printf("Current Priority-> 0x%08x\n", tinfo.cur_pri);
    printf("Stack base-> 0x%08x\n", tinfo.stack_base);
    printf("Stack size-> 0x%08x\n", tinfo.stack_size);
    printf("Stack used-> 0x%08x\n", tinfo.stack_used);
#endif  /* defined(THREADINFO_DEBUG) */
}

--Chris

-----Original Message-----
From: ecos-discuss-owner@ecos.sourceware.org
[mailto:ecos-discuss-owner@ecos.sourceware.org] On Behalf Of Nick
Garnett
Sent: Wednesday, November 23, 2005 5:13 AM
To: Good Guy
Cc: eCos Discussion
Subject: Re: [ECOS] Re: listing all threads

Gary Thomas <gary@mlbassoc.com> writes:

> On Tue, 2005-11-22 at 15:12 -0800, Good Guy wrote:
> > I was looking for a utility function which will list all the threads
> > (and state associated with each thread) in a running system. Does
such
> > a function or some sample code to help write this function exist?
I'm
> > using ecos 1.3.1.
>         ^^^^^^^^^^
> Now some 5+ years old, so you may have challenges ahead.  Why not
> update?
> 
> Any way, the basic code to do this is in the GDB stubs.  Look at
>   .../hal/common/<VERSION>/src

There's an API to do this from user code. Take a look at
cyg_thread_get_info() and friends. It is described in the
documentation. However, it is not present in 1.3.1.


-- 
Nick Garnett                                     eCos Kernel Architect
http://www.ecoscentric.com                The eCos and RedBoot experts


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