Ignore:
Timestamp:
Mar 7, 2018, 9:02:03 AM (4 years ago)
Author:
alain
Message:

1) improve the threads and process destruction mechanism.
2) introduce FIFOs in the soclib_tty driver.

File:
1 edited

Legend:

Unmodified
Added
Removed
  • trunk/kernel/kern/rpc.c

    r435 r436  
    8282    &rpc_thread_user_create_server,     // 6
    8383    &rpc_thread_kernel_create_server,   // 7
    84     &rpc_thread_kill_server,            // 8                      
     84    &rpc_undefined,                     // 8    unused slot       
    8585    &rpc_process_sigaction_server,      // 9
    8686
     
    122122               rpc_desc_t * rpc )
    123123{
    124     error_t    error;
    125 
    126     thread_t * this = CURRENT_THREAD;
    127     core_t   * core = this->core;
     124    volatile error_t   full = 0;
     125    thread_t         * this = CURRENT_THREAD;
     126    core_t           * core = this->core;
     127
     128#if CONFIG_DEBUG_RPC_SEND
     129uint32_t cycle = (uint32_t)hal_get_cycles();
     130if( CONFIG_DEBUG_RPC_SEND < cycle )
     131printk("\n[DBG] %s : thread %x enter for rpc[%d] / rpc_ptr %x / cycle %d\n",
     132__FUNCTION__, CURRENT_THREAD, rpc->index, rpc, cycle );
     133#endif
    128134
    129135    // register client thread pointer and core lid in RPC descriptor
    130     rpc->thread    = this;
    131     rpc->lid       = core->lid;
     136    rpc->thread = this;
     137    rpc->lid    = core->lid;
    132138
    133139    // build an extended pointer on the RPC descriptor
    134140        xptr_t   desc_xp = XPTR( local_cxy , rpc );
    135141
    136     // get local pointer on rpc_fifo in remote cluster, with the
    137     // assumption that local pointers are identical in all clusters
     142    // get local pointer on rpc_fifo in remote cluster,
    138143    remote_fifo_t * rpc_fifo = &LOCAL_CLUSTER->rpc_fifo;
    139144
    140         // try to post an item in remote fifo
    141     // deschedule and retry if remote fifo full
     145        // post RPC in remote fifo / deschedule and retry if fifo full
    142146    do
    143147    {
    144         error = remote_fifo_put_item( XPTR( server_cxy , rpc_fifo ),
    145                                       (uint64_t )desc_xp );
    146             if ( error )
     148        full = remote_fifo_put_item( XPTR( server_cxy , rpc_fifo ), (uint64_t )desc_xp );
     149            if ( full )
    147150        {
    148151            printk("\n[WARNING] %s : cluster %x cannot post RPC to cluster %x\n",
    149152            __FUNCTION__ , local_cxy , server_cxy );
    150153
    151             if( thread_can_yield() ) sched_yield("RPC fifo full");
     154            // deschedule without blocking
     155            sched_yield("RPC fifo full");
    152156        }
    153157    }
    154     while( error );
     158    while( full );
    155159 
    156160    hal_fence();
     
    167171        {
    168172
    169 grpc_dmsg("\n[DBG] %s : core[%x,%d] / thread %s busy waiting after registering RPC\n"
    170 "        rpc = %d / server = %x / cycle %d\n",
    171 __FUNCTION__ , local_cxy , CURRENT_THREAD->core->lid , thread_type_str(this->type) ,
    172 rpc->index , server_cxy , hal_time_stamp() );
     173#if CONFIG_DEBUG_RPC_SEND
     174cycle = (uint32_t)hal_get_cycles();
     175if( CONFIG_DEBUG_RPC_SEND < cycle )
     176printk("\n[DBG] %s : thread %x busy waiting / rpc[%d] / server = %x / cycle %d\n",
     177__FUNCTION__, CURRENT_THREAD, rpc->index , server_cxy , cycle );
     178#endif
    173179
    174180            while( rpc->response ) hal_fixed_delay( 100 );
    175181   
    176 grpc_dmsg("\n[DBG] %s : core[%x,%d] / thread %s exit after RPC completion\n",
    177 __FUNCTION__ , local_cxy , CURRENT_THREAD->core->lid , thread_type_str(this->type) );
    178 
     182#if CONFIG_DEBUG_RPC_SEND
     183cycle = (uint32_t)hal_get_cycles();
     184if( CONFIG_DEBUG_RPC_SEND < cycle )
     185printk("\n[DBG] %s : thread % resume / rpc[%d] / cycle %d\n",
     186__FUNCTION__, CURRENT_THREAD, rpc->index, cycle );
     187#endif
    179188        }
    180         else                                                              // block & deschedule
     189        else                                                         // block & deschedule
    181190        {
    182191
    183 grpc_dmsg("\n[DBG] %s : core[%x,%d] / thread %s deschedule after registering RPC\n"
    184 "        rpc = %d / server = %x / cycle %d\n",
    185 __FUNCTION__ , local_cxy , CURRENT_THREAD->core->lid , thread_type_str(this->type) ,
    186 rpc->index , server_cxy , hal_time_stamp() );
    187 
    188             thread_block( this , THREAD_BLOCKED_RPC );
    189             sched_yield("BLOCKED on RPC");
    190 
    191 grpc_dmsg("\n[DBG] %s : core[%x,%d] / thread %s resumes after RPC completion\n",
    192 __FUNCTION__ , local_cxy , CURRENT_THREAD->core->lid , thread_type_str(this->type) );
    193 
     192#if CONFIG_DEBUG_RPC_SEND
     193cycle = (uint32_t)hal_get_cycles();
     194if( CONFIG_DEBUG_RPC_SEND < cycle )
     195printk("\n[DBG] %s : thread %x block & deschedule / rpc[%d] / server = %x / cycle %d\n",
     196__FUNCTION__, CURRENT_THREAD, rpc->index , server_cxy , cycle );
     197#endif
     198            thread_block( XPTR( local_cxy , this ) , THREAD_BLOCKED_RPC );
     199            sched_yield("blocked on RPC");
     200
     201#if CONFIG_DEBUG_RPC_SEND
     202cycle = (uint32_t)hal_get_cycles();
     203if( CONFIG_DEBUG_RPC_SEND < cycle )
     204printk("\n[DBG] %s : thread % resume / rpcr[%d] / cycle %d\n",
     205__FUNCTION__, CURRENT_THREAD, rpc->index, cycle );
     206#endif
    194207        }
    195208
     
    199212        // acknowledge the IPI sent by the server
    200213        dev_pic_ack_ipi();
     214    }
     215    else
     216    {
     217
     218#if CONFIG_DEBUG_RPC_SEND
     219cycle = (uint32_t)hal_get_cycles();
     220if( CONFIG_DEBUG_RPC_SEND < cycle )
     221printk("\n[DBG] %s : non blocking rpc[%d] => thread return  / cycle %d\n",
     222__FUNCTION__, rpc->index, CURRENT_THREAD, cycle );
     223#endif
     224
    201225    }
    202226}  // end rpc_send()
     
    220244        remote_fifo_t * rpc_fifo = &LOCAL_CLUSTER->rpc_fifo;
    221245
    222 grpc_dmsg("\n[DBG] %s : core[%x,%d] / interrupted thread %s / cycle %d\n",
    223 __FUNCTION__, local_cxy, core->lid, thread_type_str(this->type), hal_time_stamp() );
     246#if CONFIG_DEBUG_RPC_SERVER
     247uint32_t cycle = (uint32_t)hal_get_cycles();
     248if( CONFIG_DEBUG_RPC_SERVER < cycle )
     249printk("\n[DBG] %s : thread %x interrupted in cluster %x / cycle %d\n",
     250__FUNCTION__, this, local_cxy, cycle );
     251#endif
    224252
    225253    // interrupted thread not preemptable during RPC chek
     
    262290                    hal_atomic_add( &LOCAL_CLUSTER->rpc_threads , 1 );
    263291
    264 grpc_dmsg("\n[DBG] %s : core [%x,%d] creates a new RPC thread %x / trdid %x / cycle %d\n",
    265 __FUNCTION__ , local_cxy , core->lid , thread , thread->trdid , hal_time_stamp() );
    266 
     292#if CONFIG_DEBUG_RPC_SERVER
     293cycle = (uint32_t)hal_get_cycles();
     294if( CONFIG_DEBUG_RPC_SERVER < cycle )
     295printk("\n[DBG] %s : create a new RPC thread %x in cluster %x / cycle %d\n",
     296__FUNCTION__, thread, local_cxy, cycle );
     297#endif
    267298            }
    268299        }
    269300    }
    270301
    271 grpc_dmsg("\n[DBG] %s : core[%x,%d] / interrupted thread %s deschedules / cycle %d\n",
    272 __FUNCTION__, local_cxy, core->lid, thread_type_str(this->type), hal_time_stamp() );
     302#if CONFIG_DEBUG_RPC_SERVER
     303cycle = (uint32_t)hal_get_cycles();
     304if( CONFIG_DEBUG_RPC_SERVER < cycle )
     305printk("\n[DBG] %s : interrupted thread %x deschedules in cluster %x / cycle %d\n",
     306__FUNCTION__, this, local_cxy, cycle );
     307#endif
    273308
    274309    // interrupted thread deschedule always           
    275310        sched_yield("IPI received");
    276311
    277 grpc_dmsg("\n[DBG] %s : core[%x,%d] / interrupted thread %s resume / cycle %d\n",
    278 __FUNCTION__, local_cxy, core->lid, thread_type_str(this->type), hal_time_stamp() );
     312#if CONFIG_DEBUG_RPC_SERVER
     313cycle = (uint32_t)hal_get_cycles();
     314if( CONFIG_DEBUG_RPC_SERVER < cycle )
     315printk("\n[DBG] %s : interrupted thread %x resumes in cluster %x / cycle %d\n",
     316__FUNCTION__, this, local_cxy, cycle );
     317#endif
    279318
    280319    // interrupted thread restore IRQs after resume
     
    312351        if( hal_atomic_test_set( &rpc_fifo->owner , this->trdid ) )
    313352        {
     353
     354#if CONFIG_DEBUG_RPC_SERVER
     355uint32_t cycle = (uint32_t)hal_get_cycles();
     356if( CONFIG_DEBUG_RPC_SERVER < cycle )
     357printk("\n[DBG] %s : RPC thread %x takes RPC fifo ownership / cluster %x / cycle %d\n",
     358__FUNCTION__, this, local_cxy, cycle );
     359#endif
    314360            // initializes RPC requests counter
    315361            count = 0;
     
    324370                while( 1 )  // internal loop
    325371            {
    326 
    327372                    empty = local_fifo_get_item( rpc_fifo , (uint64_t *)&desc_xp );
    328373
     
    330375                {
    331376                    // get client cluster and pointer on RPC descriptor
    332                     desc_cxy = (cxy_t)GET_CXY( desc_xp );
    333                     desc_ptr = (rpc_desc_t *)GET_PTR( desc_xp );
    334 
    335                     // get RPC <index> & <blocking> fields from RPC descriptor
    336                         index    = hal_remote_lw( XPTR( desc_cxy , &desc_ptr->index ) );
    337                     blocking = hal_remote_lw( XPTR( desc_cxy , &desc_ptr->blocking ) );
    338 
    339 grpc_dmsg("\n[DBG] %s : core[%x,%d] / RPC thread %x / starts rpc %d / cycle %d\n",
    340 __FUNCTION__ , local_cxy , this->core->lid , this->trdid , index , (uint32_t)hal_get_cycles() );
    341 
     377                    desc_cxy = GET_CXY( desc_xp );
     378                    desc_ptr = GET_PTR( desc_xp );
     379
     380                        index    = desc_ptr->index;
     381                    blocking = desc_ptr->blocking;
     382
     383#if CONFIG_DEBUG_RPC_SERVER
     384cycle = (uint32_t)hal_get_cycles();
     385if( CONFIG_DEBUG_RPC_SERVER < cycle )
     386printk("\n[DBG] %s : RPC thread %x got rpc[%d] / rpc_ptr %x / cycle %d\n",
     387__FUNCTION__, this, index, desc_ptr, cycle );
     388#endif
    342389                    // call the relevant server function
    343390                    rpc_server[index]( desc_xp );
    344391
    345 grpc_dmsg("\n[DBG] %s : core[%x,%d] / RPC thread %x / completes rpc %d / cycle %d\n",
    346 __FUNCTION__ , local_cxy , this->core->lid , this->trdid , index , hal_time_stamp() );
    347 
     392#if CONFIG_DEBUG_RPC_SERVER
     393cycle = (uint32_t)hal_get_cycles();
     394if( CONFIG_DEBUG_RPC_SERVER < cycle )
     395printk("\n[DBG] %s : RPC thread %x completes rpc %d in cluster %x / cycle %d\n",
     396__FUNCTION__, this, index, local_cxy, cycle );
     397#endif
    348398                    // increment handled RPCs counter
    349399                        count++;
     
    382432            {
    383433
    384 grpc_dmsg("\n[DBG] %s : core[%x,%d] (RPC thread %x) suicide at cycle %d\n",
    385 __FUNCTION__, local_cxy, this->core->lid, this->trdid, hal_time_stamp() );
    386 
     434#if CONFIG_DEBUG_RPC_SERVER
     435uint32_t cycle = (uint32_t)hal_get_cycles();
     436if( CONFIG_DEBUG_RPC_SERVER < cycle )
     437printk("\n[DBG] %s : RPC thread %x suicides in cluster %x / cycle %d\n",
     438__FUNCTION__, this, local_cxy, cycle );
     439#endif
    387440            // update RPC threads counter
    388441                hal_atomic_add( &LOCAL_CLUSTER->rpc_threads , -1 );
    389442
    390443            // suicide
    391                 thread_kill( this );
     444                thread_kill( XPTR( local_cxy , this ),
     445                         true,                      // is_exit
     446                         true );                    // is forced
    392447            }
    393448
    394 grpc_dmsg("\n[DBG] %s : core[%x,%d] (RPC thread %x) deschedules / cycle %d\n",
    395 __FUNCTION__, local_cxy, this->core->lid, this->trdid, hal_time_stamp() );
     449#if CONFIG_DEBUG_RPC_SERVER
     450uint32_t cycle = (uint32_t)hal_get_cycles();
     451if( CONFIG_DEBUG_RPC_SERVER < cycle )
     452printk("\n[DBG] %s : RPC thread %x deschedules in cluster %x / cycle %d\n",
     453__FUNCTION__, this, local_cxy, cycle );
     454#endif
    396455
    397456        // deschedule without blocking
    398457        sched_yield("RPC fifo empty or too much work");
    399458
    400 grpc_dmsg("\n[DBG] %s : core[%x,%d] (RPC thread %x) resumes / cycle %d\n",
    401 __FUNCTION__, local_cxy, this->core->lid, this->trdid, hal_time_stamp() );
     459#if CONFIG_DEBUG_RPC_SERVER
     460cycle = (uint32_t)hal_get_cycles();
     461if( CONFIG_DEBUG_RPC_SERVER < cycle )
     462printk("\n[DBG] %s : RPC thread %x resumes in cluster %x / cycle %d\n",
     463__FUNCTION__, this, local_cxy, cycle );
     464#endif
    402465
    403466        } // end external loop
     
    430493    rpc.args[0] = (uint64_t)order;
    431494
    432     // register RPC request in remote RPC fifo (blocking function)
     495    // register RPC request in remote RPC fifo
    433496    rpc_send( cxy , &rpc );
    434497
     
    449512
    450513    // get client cluster identifier and pointer on RPC descriptor
    451     cxy_t        cxy  = (cxy_t)GET_CXY( xp );
    452     rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
     514    cxy_t        cxy  = GET_CXY( xp );
     515    rpc_desc_t * desc = GET_PTR( xp );
    453516
    454517    // get input arguments from client RPC descriptor
     
    489552    rpc.args[0] = (uint64_t)(intptr_t)page;
    490553
    491     // register RPC request in remote RPC fifo (blocking function)
     554    // register RPC request in remote RPC fifo
    492555    rpc_send( cxy , &rpc );
    493556
     
    505568
    506569    // get client cluster identifier and pointer on RPC descriptor
    507     cxy_t        cxy  = (cxy_t)GET_CXY( xp );
    508     rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
     570    cxy_t        cxy  = GET_CXY( xp );
     571    rpc_desc_t * desc = GET_PTR( xp );
    509572
    510573    // get input arguments from client RPC descriptor
     
    554617    rpc.args[1] = (uint64_t)(intptr_t)parent_thread_xp;
    555618
    556     // register RPC request in remote RPC fifo (blocking function)
     619    // register RPC request in remote RPC fifo
    557620    rpc_send( cxy , &rpc );
    558621
     
    581644
    582645    // get client cluster identifier and pointer on RPC descriptor
    583     cxy_t        client_cxy  = (cxy_t)GET_CXY( xp );
    584     rpc_desc_t * desc        = (rpc_desc_t *)GET_PTR( xp );
     646    cxy_t        client_cxy  = GET_CXY( xp );
     647    rpc_desc_t * desc        = GET_PTR( xp );
    585648
    586649    // get input arguments from cient RPC descriptor
     
    613676
    614677/////////////////////////////////////////////////////////////////////////////////////////
    615 // [6]           Marshaling functions attached to RPC_THREAD_USER_CREATE (blocking) 
     678// [6]      Marshaling functions attached to RPC_THREAD_USER_CREATE (blocking) 
    616679/////////////////////////////////////////////////////////////////////////////////////////
    617680
     
    633696    // initialise RPC descriptor header
    634697    rpc_desc_t  rpc;
    635     rpc.index     = RPC_THREAD_USER_CREATE;
    636     rpc.response  = 1;
     698    rpc.index    = RPC_THREAD_USER_CREATE;
     699    rpc.response = 1;
    637700    rpc.blocking = true;
    638701
     
    643706    rpc.args[3] = (uint64_t)(intptr_t)attr;
    644707
    645     // register RPC request in remote RPC fifo (blocking function)
     708    // register RPC request in remote RPC fifo
    646709    rpc_send( cxy , &rpc );
    647710
     
    673736
    674737    // get client cluster identifier and pointer on RPC descriptor
    675     cxy_t        client_cxy  = (cxy_t)GET_CXY( xp );
    676     rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
     738    cxy_t        client_cxy  = GET_CXY( xp );
     739    rpc_desc_t * desc = GET_PTR( xp );
    677740
    678741    // get pointer on attributes structure in client cluster from RPC descriptor
     
    707770
    708771/////////////////////////////////////////////////////////////////////////////////////////
    709 // [7]           Marshaling functions attached to RPC_THREAD_KERNEL_CREATE (blocking)
     772// [7]      Marshaling functions attached to RPC_THREAD_KERNEL_CREATE (blocking)
    710773/////////////////////////////////////////////////////////////////////////////////////////
    711774
     
    735798    rpc.args[2] = (uint64_t)(intptr_t)args;
    736799   
    737     // register RPC request in remote RPC fifo (blocking function)
     800    // register RPC request in remote RPC fifo
    738801    rpc_send( cxy , &rpc );
    739802
     
    760823
    761824    // get client cluster identifier and pointer on RPC descriptor
    762     cxy_t        client_cxy  = (cxy_t)GET_CXY( xp );
    763     rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
     825    cxy_t        client_cxy  = GET_CXY( xp );
     826    rpc_desc_t * desc = GET_PTR( xp );
    764827
    765828    // get attributes from RPC descriptor
     
    785848
    786849/////////////////////////////////////////////////////////////////////////////////////////
    787 // [8]           Marshaling functions attached to RPC_THREAD_KILL (blocking)
    788 /////////////////////////////////////////////////////////////////////////////////////////
    789 
    790 /////////////////////////////////////////////
    791 void rpc_thread_kill_client( cxy_t       cxy,
    792                              thread_t  * thread )    // in
    793 {
    794 rpc_dmsg("\n[DBG] %s : enter / thread %x on core[%x,%d] / cycle %d\n",
    795 __FUNCTION__ , CURRENT_THREAD->trdid , local_cxy,
    796 CURRENT_THREAD->core->lid , hal_time_stamp() );
    797 
    798     // this RPC can be called in local cluster
    799 
    800     // initialise RPC descriptor header
    801     rpc_desc_t  rpc;
    802     rpc.index    = RPC_THREAD_KILL;
    803     rpc.response = 1;
    804     rpc.blocking = true;
    805 
    806     // set input arguments in RPC descriptor
    807     rpc.args[0] = (uint64_t)(intptr_t)thread;
    808    
    809     // register RPC request in remote RPC fifo (blocking function)
    810     rpc_send( cxy , &rpc );
    811 
    812 rpc_dmsg("\n[DBG] %s : exit / thread %x on core[%x,%d] / cycle %d\n",
    813 __FUNCTION__ , CURRENT_THREAD->trdid , local_cxy,
    814 CURRENT_THREAD->core->lid , hal_time_stamp() );
    815 }
    816 
    817 ////////////////////////////////////////                             
    818 void rpc_thread_kill_server( xptr_t xp )
    819 {
    820 rpc_dmsg("\n[DBG] %s : enter / thread %x on core[%x,%d] / cycle %d\n",
    821 __FUNCTION__ , CURRENT_THREAD->trdid , local_cxy,
    822 CURRENT_THREAD->core->lid , hal_time_stamp() );
    823 
    824     thread_t  * thread;  // local pointer on process descriptor
    825 
    826     // get client cluster identifier and pointer on RPC descriptor
    827     cxy_t        client_cxy  = (cxy_t)GET_CXY( xp );
    828     rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
    829 
    830     // get attributes from RPC descriptor
    831     thread = (thread_t *)(intptr_t)hal_remote_lwd( XPTR( client_cxy , &desc->args[0] ) );
    832 
    833     // call local kernel function
    834     thread_kill( thread );
    835 
    836 rpc_dmsg("\n[DBG] %s : exit / thread %x on core[%x,%d] / cycle %d\n",
    837 __FUNCTION__ , CURRENT_THREAD->trdid , local_cxy,
    838 CURRENT_THREAD->core->lid , hal_time_stamp() );
    839 }
     850// [8]   undefined slot
     851/////////////////////////////////////////////////////////////////////////////////////////
    840852
    841853
     
    846858////////////////////////////////////////////////////
    847859void rpc_process_sigaction_client( cxy_t        cxy,
    848                                    rpc_desc_t * rpc_ptr )
    849 {
    850 rpc_dmsg("\n[DBG] %s : enter to %s process %x in cluster %x / cycle %d\n",
    851 __FUNCTION__ , process_action_str( (uint32_t)rpc_ptr->args[0] ) ,
    852 ((process_t *)(intptr_t)rpc_ptr->args[1])->pid , cxy , (uint32_t)hal_get_cycles() );
    853 
    854     // register RPC request in remote RPC fifo
    855     rpc_send( cxy , rpc_ptr );
    856 
    857 rpc_dmsg("\n[DBG] %s : exit after %s process %x in cluster %x / cycle %d\n",
    858 __FUNCTION__ , process_action_str( (uint32_t)rpc_ptr->args[0] ) ,
    859 ((process_t *)(intptr_t)rpc_ptr->args[1])->pid , cxy , (uint32_t)hal_get_cycles() );
    860 
     860                                   rpc_desc_t * rpc )
     861{
     862
     863#if (CONFIG_DEBUG_PROCESS_SIGACTION & 1)
     864uint32_t  cycle  = (uint32_t)hal_get_cycles();
     865uint32_t  action = rpc->args[0];
     866pid_t     pid    = rpc->args[1];
     867if( CONFIG_DEBUG_PROCESS_SIGACTION < cycle )
     868printk("\n[DBG] %s : enter to %s process %x in cluster %x / cycle %d\n",
     869__FUNCTION__ , process_action_str( action ) , pid , cxy , cycle );
     870#endif
     871
     872    // check some RPC arguments
     873    assert( (rpc->blocking == false) , __FUNCTION__ , "must be non-blocking\n");
     874    assert( (rpc->index == RPC_PROCESS_SIGACTION ) , __FUNCTION__ , "bad RPC index\n" );
     875
     876    // register RPC request in remote RPC fifo and return
     877    rpc_send( cxy , rpc );
     878
     879#if (CONFIG_DEBUG_PROCESS_SIGACTION & 1)
     880cycle = (uint32_t)hal_get_cycles();
     881if( CONFIG_DEBUG_PROCESS_SIGACTION < cycle )
     882printk("\n[DBG] %s : exit after requesting to %s process %x in cluster %x / cycle %d\n",
     883__FUNCTION__ , process_action_str( action ) , pid , cxy , cycle );
     884#endif
     885
     886}  // end rpc_process_sigaction_client()
    861887
    862888//////////////////////////////////////////////
     
    864890{
    865891    pid_t        pid;              // target process identifier
    866     process_t  * process;          // pointer on local process descriptor
     892    process_t  * process;          // pointer on local target process descriptor
    867893    uint32_t     action;           // sigaction index
    868     thread_t   * client_ptr;       // local pointer on client thread in client cluster
     894    thread_t   * client_thread;    // pointer on client thread in client cluster
    869895    cxy_t        client_cxy;       // client cluster identifier
    870     xptr_t       client_xp;        // extended pointer on client thread
    871     core_t     * client_core;      // local pointer on core running the client thread
    872     rpc_desc_t * rpc;              // local pointer on rpc descriptor in client cluster
    873 
    874     // get client cluster identifier and pointer on RPC descriptor
    875     client_cxy = (cxy_t)GET_CXY( xp );
    876     rpc        = (rpc_desc_t *)GET_PTR( xp );
     896    rpc_desc_t * rpc;              // pointer on rpc descriptor in client cluster
     897    xptr_t       count_xp;         // extended pointer on response counter
     898    lid_t        client_lid;       // client core local index
     899
     900    // get client cluster identifier and pointer on RPC descriptor
     901    client_cxy = GET_CXY( xp );
     902    rpc        = GET_PTR( xp );
    877903
    878904    // get arguments from RPC descriptor
    879     action      = (uint32_t)  hal_remote_lwd( XPTR( client_cxy , &rpc->args[0] ) );
    880     pid         = (pid_t)     hal_remote_lwd( XPTR( client_cxy , &rpc->args[1] ) );
    881     client_ptr  = (thread_t *)hal_remote_lpt( XPTR( client_cxy , &rpc->thread ) );
    882 
    883 rpc_dmsg("\n[DBG] %s : enter to %s process %x / cycle %d\n",
    884 __FUNCTION__ , process_action_str( action ) , pid , (uint32_t)hal_get_cycles() );
     905    action   = (uint32_t)hal_remote_lwd( XPTR(client_cxy , &rpc->args[0]) );
     906    pid      = (pid_t)   hal_remote_lwd( XPTR(client_cxy , &rpc->args[1]) );
     907
     908#if (CONFIG_DEBUG_PROCESS_SIGACTION & 1)
     909uint32_t cycle = (uint32_t)hal_get_cycles();
     910if( CONFIG_DEBUG_PROCESS_SIGACTION < cycle )
     911printk("\n[DBG] %s : enter to %s process %x in cluster %x / cycle %d\n",
     912__FUNCTION__ , process_action_str( action ) , pid , local_cxy , cycle );
     913#endif
    885914
    886915    // get local process descriptor
    887     process = process_get_local_copy( pid );
    888 
    889     // build extended pointer on client thread
    890     client_xp = XPTR( client_cxy , client_ptr );
     916    process = cluster_get_local_process_from_pid( pid );
    891917
    892918    // call relevant kernel function
    893     if      (action == DELETE_ALL_THREADS  ) process_delete_threads ( process );
    894     else if (action == BLOCK_ALL_THREADS   ) process_block_threads  ( process );
    895     else if (action == UNBLOCK_ALL_THREADS ) process_unblock_threads( process );
     919    if      ( action == DELETE_ALL_THREADS  ) process_delete_threads ( process );
     920    else if ( action == BLOCK_ALL_THREADS   ) process_block_threads  ( process );
     921    else if ( action == UNBLOCK_ALL_THREADS ) process_unblock_threads( process );
     922
     923    // build extended pointer on response counter in RPC
     924    count_xp = XPTR( client_cxy , &rpc->response );
    896925
    897926    // decrement the responses counter in RPC descriptor,
    898927    // unblock the client thread only if it is the last response.
    899     if( hal_remote_atomic_add( XPTR( client_cxy , &rpc->response ) , -1 ) == 1 )
     928    if( hal_remote_atomic_add( count_xp , -1 ) == 1 )
    900929    {
    901         client_core = (core_t *)hal_remote_lpt( XPTR( client_cxy , &client_ptr->core ) );
    902         thread_unblock( client_xp , THREAD_BLOCKED_RPC );
    903         dev_pic_send_ipi( client_cxy , client_core->lid );
     930        // get client thread pointer and client core lid
     931        client_thread = (thread_t *)hal_remote_lpt( XPTR( client_cxy , &rpc->thread ) );
     932        client_lid    = (lid_t)     hal_remote_lw ( XPTR( client_cxy , &rpc->lid    ) );
     933
     934        thread_unblock( XPTR( client_cxy , client_thread ) , THREAD_BLOCKED_RPC );
     935        dev_pic_send_ipi( client_cxy , client_lid );
    904936    }
    905937
    906 rpc_dmsg("\n[DBG] %s : exit after %s process %x / cycle %d\n",
    907 __FUNCTION__ , process_action_str( action ) , pid , (uint32_t)hal_get_cycles() );
    908 }
    909 
    910 /////////////////////////////////////////////////////////////////////////////////////////
    911 // [10]          Marshaling functions attached to RPC_VFS_INODE_CREATE  (blocking)
     938#if (CONFIG_DEBUG_PROCESS_SIGACTION & 1)
     939cycle = (uint32_t)hal_get_cycles();
     940if( CONFIG_DEBUG_PROCESS_SIGACTION < cycle )
     941printk("\n[DBG] %s : exit after %s process %x in cluster %x / cycle %d\n",
     942__FUNCTION__ , process_action_str( action ) , pid , local_cxy , cycle );
     943#endif
     944
     945} // end rpc_process_sigaction_server()
     946
     947/////////////////////////////////////////////////////////////////////////////////////////
     948// [10]     Marshaling functions attached to RPC_VFS_INODE_CREATE  (blocking)
    912949/////////////////////////////////////////////////////////////////////////////////////////
    913950
     
    947984    rpc.args[7] = (uint64_t)gid;
    948985
    949     // register RPC request in remote RPC fifo (blocking function)
     986    // register RPC request in remote RPC fifo
    950987    rpc_send( cxy , &rpc );
    951988
     
    9781015
    9791016    // get client cluster identifier and pointer on RPC descriptor
    980     cxy_t        client_cxy  = (cxy_t)GET_CXY( xp );
    981     rpc_desc_t * desc        = (rpc_desc_t *)GET_PTR( xp );
     1017    cxy_t        client_cxy  = GET_CXY( xp );
     1018    rpc_desc_t * desc        = GET_PTR( xp );
    9821019
    9831020    // get input arguments from client rpc descriptor
     
    10341071    rpc.args[0] = (uint64_t)(intptr_t)inode;
    10351072   
    1036     // register RPC request in remote RPC fifo (blocking function)
     1073    // register RPC request in remote RPC fifo
    10371074    rpc_send( cxy , &rpc );
    10381075
     
    10521089
    10531090    // get client cluster identifier and pointer on RPC descriptor
    1054     cxy_t        client_cxy  = (cxy_t)GET_CXY( xp );
    1055     rpc_desc_t * desc        = (rpc_desc_t *)GET_PTR( xp );
     1091    cxy_t        client_cxy  = GET_CXY( xp );
     1092    rpc_desc_t * desc        = GET_PTR( xp );
    10561093
    10571094    // get arguments "inode" from client RPC descriptor
     
    10951132    rpc.args[2] = (uint64_t)(intptr_t)parent;
    10961133
    1097     // register RPC request in remote RPC fifo (blocking function)
     1134    // register RPC request in remote RPC fifo
    10981135    rpc_send( cxy , &rpc );
    10991136
     
    11231160
    11241161    // get client cluster identifier and pointer on RPC descriptor
    1125     cxy_t        client_cxy  = (cxy_t)GET_CXY( xp );
    1126     rpc_desc_t * desc        = (rpc_desc_t *)GET_PTR( xp );
     1162    cxy_t        client_cxy  = GET_CXY( xp );
     1163    rpc_desc_t * desc        = GET_PTR( xp );
    11271164
    11281165    // get arguments "name", "type", and "parent" from client RPC descriptor
     
    11731210    rpc.args[0] = (uint64_t)(intptr_t)dentry;
    11741211   
    1175     // register RPC request in remote RPC fifo (blocking function)
     1212    // register RPC request in remote RPC fifo
    11761213    rpc_send( cxy , &rpc );
    11771214
     
    11911228
    11921229    // get client cluster identifier and pointer on RPC descriptor
    1193     cxy_t        client_cxy  = (cxy_t)GET_CXY( xp );
    1194     rpc_desc_t * desc        = (rpc_desc_t *)GET_PTR( xp );
     1230    cxy_t        client_cxy  = GET_CXY( xp );
     1231    rpc_desc_t * desc        = GET_PTR( xp );
    11951232
    11961233    // get arguments "dentry" from client RPC descriptor
     
    12331270    rpc.args[1] = (uint64_t)file_attr;
    12341271
    1235     // register RPC request in remote RPC fifo (blocking function)
     1272    // register RPC request in remote RPC fifo
    12361273    rpc_send( cxy , &rpc );
    12371274
     
    12581295
    12591296    // get client cluster identifier and pointer on RPC descriptor
    1260     cxy_t        client_cxy  = (cxy_t)GET_CXY( xp );
    1261     rpc_desc_t * desc        = (rpc_desc_t *)GET_PTR( xp );
     1297    cxy_t        client_cxy  = GET_CXY( xp );
     1298    rpc_desc_t * desc        = GET_PTR( xp );
    12621299
    12631300    // get arguments "file_attr" and "inode" from client RPC descriptor
     
    13021339    rpc.args[0] = (uint64_t)(intptr_t)file;
    13031340   
    1304     // register RPC request in remote RPC fifo (blocking function)
     1341    // register RPC request in remote RPC fifo
    13051342    rpc_send( cxy , &rpc );
    13061343
     
    13201357
    13211358    // get client cluster identifier and pointer on RPC descriptor
    1322     cxy_t        client_cxy  = (cxy_t)GET_CXY( xp );
    1323     rpc_desc_t * desc        = (rpc_desc_t *)GET_PTR( xp );
     1359    cxy_t        client_cxy  = GET_CXY( xp );
     1360    rpc_desc_t * desc        = GET_PTR( xp );
    13241361
    13251362    // get arguments "dentry" from client RPC descriptor
     
    13621399    rpc.args[2] = (uint64_t)child_inode_xp;
    13631400
    1364     // register RPC request in remote RPC fifo (blocking function)
     1401    // register RPC request in remote RPC fifo
    13651402    rpc_send( cxy , &rpc );
    13661403
     
    13881425
    13891426    // get client cluster identifier and pointer on RPC descriptor
    1390     cxy_t        client_cxy  = (cxy_t)GET_CXY( xp );
    1391     rpc_desc_t * desc        = (rpc_desc_t *)GET_PTR( xp );
     1427    cxy_t        client_cxy  = GET_CXY( xp );
     1428    rpc_desc_t * desc        = GET_PTR( xp );
    13921429
    13931430    // get arguments "parent", "name", and "child_xp"
     
    14351472    rpc.args[0] = (uint64_t)(intptr_t)inode;
    14361473
    1437     // register RPC request in remote RPC fifo (blocking function)
     1474    // register RPC request in remote RPC fifo
    14381475    rpc_send( cxy , &rpc );
    14391476
     
    14571494
    14581495    // get client cluster identifier and pointer on RPC descriptor
    1459     cxy_t        client_cxy  = (cxy_t)GET_CXY( xp );
    1460     rpc_desc_t * desc        = (rpc_desc_t *)GET_PTR( xp );
     1496    cxy_t        client_cxy  = GET_CXY( xp );
     1497    rpc_desc_t * desc        = GET_PTR( xp );
    14611498
    14621499    // get arguments "parent", "name", and "child_xp"
     
    15291566
    15301567    // get client cluster identifier and pointer on RPC descriptor
    1531     cxy_t        client_cxy  = (cxy_t)GET_CXY( xp );
    1532     rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
     1568    cxy_t        client_cxy  = GET_CXY( xp );
     1569    rpc_desc_t * desc = GET_PTR( xp );
    15331570
    15341571    // get input arguments
     
    15761613    rpc.args[1] = (uint64_t)vaddr;
    15771614
    1578     // register RPC request in remote RPC fifo (blocking function)
     1615    // register RPC request in remote RPC fifo
    15791616    rpc_send( cxy , &rpc );
    15801617
     
    16021639
    16031640    // get client cluster identifier and pointer on RPC descriptor
    1604     cxy_t        client_cxy  = (cxy_t)GET_CXY( xp );
    1605     rpc_desc_t * desc        = (rpc_desc_t *)GET_PTR( xp );
     1641    cxy_t        client_cxy  = GET_CXY( xp );
     1642    rpc_desc_t * desc        = GET_PTR( xp );
    16061643
    16071644    // get input argument from client RPC descriptor
     
    16531690    rpc.args[2] = (uint64_t)cow;
    16541691
    1655     // register RPC request in remote RPC fifo (blocking function)
     1692    // register RPC request in remote RPC fifo
    16561693    rpc_send( cxy , &rpc );
    16571694
     
    16811718
    16821719    // get client cluster identifier and pointer on RPC descriptor
    1683     cxy_t        client_cxy  = (cxy_t)GET_CXY( xp );
    1684     rpc_desc_t * desc        = (rpc_desc_t *)GET_PTR( xp );
     1720    cxy_t        client_cxy  = GET_CXY( xp );
     1721    rpc_desc_t * desc        = GET_PTR( xp );
    16851722
    16861723    // get input argument "process" & "vpn" from client RPC descriptor
     
    17261763    rpc.args[0] = (uint64_t)kmem_type;
    17271764
    1728     // register RPC request in remote RPC fifo (blocking function)
     1765    // register RPC request in remote RPC fifo
    17291766    rpc_send( cxy , &rpc );
    17301767
     
    17451782
    17461783    // get client cluster identifier and pointer on RPC descriptor
    1747     cxy_t        client_cxy  = (cxy_t)GET_CXY( xp );
    1748     rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
     1784    cxy_t        client_cxy  = GET_CXY( xp );
     1785    rpc_desc_t * desc = GET_PTR( xp );
    17491786
    17501787    // get input argument "kmem_type" from client RPC descriptor
     
    17911828    rpc.args[1] = (uint64_t)kmem_type;
    17921829
    1793     // register RPC request in remote RPC fifo (blocking function)
     1830    // register RPC request in remote RPC fifo
    17941831    rpc_send( cxy , &rpc );
    17951832
     
    18071844
    18081845    // get client cluster identifier and pointer on RPC descriptor
    1809     cxy_t        client_cxy  = (cxy_t)GET_CXY( xp );
    1810     rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
     1846    cxy_t        client_cxy  = GET_CXY( xp );
     1847    rpc_desc_t * desc = GET_PTR( xp );
    18111848
    18121849    // get input arguments "buf" and "kmem_type" from client RPC descriptor
     
    18591896    rpc.args[5] = (uint64_t)size;
    18601897
    1861     // register RPC request in remote RPC fifo (blocking function)
     1898    // register RPC request in remote RPC fifo
    18621899    rpc_send( cxy , &rpc );
    18631900
     
    18871924
    18881925    // get client cluster identifier and pointer on RPC descriptor
    1889     cxy_t        client_cxy  = (cxy_t)GET_CXY( xp );
    1890     rpc_desc_t * desc        = (rpc_desc_t *)GET_PTR( xp );
     1926    cxy_t        client_cxy  = GET_CXY( xp );
     1927    rpc_desc_t * desc        = GET_PTR( xp );
    18911928
    18921929    // get arguments from client RPC descriptor
     
    19531990    rpc.args[1] = (uint64_t)index;
    19541991
    1955     // register RPC request in remote RPC fifo (blocking function)
     1992    // register RPC request in remote RPC fifo
    19561993    rpc_send( cxy , &rpc );
    19571994
     
    19722009
    19732010    // get client cluster identifier and pointer on RPC descriptor
    1974     cxy_t        cxy  = (cxy_t)GET_CXY( xp );
    1975     rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
     2011    cxy_t        cxy  = GET_CXY( xp );
     2012    rpc_desc_t * desc = GET_PTR( xp );
    19762013
    19772014    // get input arguments from client RPC descriptor
     
    20282065    rpc.args[7] = (uint64_t)vseg_cxy;
    20292066
    2030     // register RPC request in remote RPC fifo (blocking function)
     2067    // register RPC request in remote RPC fifo
    20312068    rpc_send( cxy , &rpc );
    20322069
     
    20472084
    20482085    // get client cluster identifier and pointer on RPC descriptor
    2049     cxy_t        cxy  = (cxy_t)GET_CXY( xp );
    2050     rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
     2086    cxy_t        cxy  = GET_CXY( xp );
     2087    rpc_desc_t * desc = GET_PTR( xp );
    20512088
    20522089    // get input arguments from client RPC descriptor
     
    21012138    rpc.args[0] = (uint64_t)lid;
    21022139
    2103     // register RPC request in remote RPC fifo (blocking function)
     2140    // register RPC request in remote RPC fifo
    21042141    rpc_send( cxy , &rpc );
    21052142
     
    21172154
    21182155    // get client cluster identifier and pointer on RPC descriptor
    2119     cxy_t        cxy  = (cxy_t)GET_CXY( xp );
    2120     rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
     2156    cxy_t        cxy  = GET_CXY( xp );
     2157    rpc_desc_t * desc = GET_PTR( xp );
    21212158
    21222159    // get input arguments from client RPC descriptor
     
    21542191    rpc.args[0] = (uint64_t)(intptr_t)process;
    21552192
    2156     // register RPC request in remote RPC fifo (blocking function)
     2193    // register RPC request in remote RPC fifo
    21572194    rpc_send( cxy , &rpc );
    21582195
     
    21722209
    21732210    // get client cluster identifier and pointer on RPC descriptor
    2174     cxy_t        cxy  = (cxy_t)GET_CXY( xp );
    2175     rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
     2211    cxy_t        cxy  = GET_CXY( xp );
     2212    rpc_desc_t * desc = GET_PTR( xp );
    21762213
    21772214    // get input arguments from client RPC descriptor
     
    22112248    rpc.args[1] = (uint64_t)detailed;
    22122249
    2213     // register RPC request in remote RPC fifo (blocking function)
     2250    // register RPC request in remote RPC fifo
    22142251    rpc_send( cxy , &rpc );
    22152252
     
    22302267
    22312268    // get client cluster identifier and pointer on RPC descriptor
    2232     cxy_t        cxy  = (cxy_t)GET_CXY( xp );
    2233     rpc_desc_t * desc = (rpc_desc_t *)GET_PTR( xp );
     2269    cxy_t        cxy  = GET_CXY( xp );
     2270    rpc_desc_t * desc = GET_PTR( xp );
    22342271
    22352272    // get input arguments from client RPC descriptor
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