/shark/trunk/ports/first/first-sync.c |
---|
12,8 → 12,9 |
//===================================================================== |
#include "fsf_contract.h" |
#include "fsf_server.h" |
extern int fsf_cbsstar_level; |
extern int fsf_server_level; |
//#define FSF_DEBUG |
71,8 → 72,8 |
TIME T,Q; |
int budget, local_scheduler_level, scheduler_id; |
local_scheduler_level = CBSSTAR_get_local_scheduler_level_from_pid(fsf_cbsstar_level, exec_shadow); |
scheduler_id = CBSSTAR_get_local_scheduler_id_from_pid(fsf_cbsstar_level, exec_shadow); |
local_scheduler_level = SERVER_get_local_scheduler_level_from_pid(fsf_server_level, exec_shadow); |
scheduler_id = SERVER_get_local_scheduler_id_from_pid(fsf_server_level, exec_shadow); |
if (proc_table[exec_shadow].task_level != local_scheduler_level) return 0; |
93,7 → 94,7 |
if (next_budget != NULL && next_period != NULL) { |
CBSSTAR_getbudgetinfo(fsf_cbsstar_level, &Q, &T, budget); |
SERVER_getbudgetinfo(fsf_server_level, &Q, &T, budget); |
#ifdef FSF_DEBUG |
kern_printf("(budget %d Q=%d T=%d)",budget,(int)Q,(int)T); |
139,8 → 140,8 |
TIME T,Q; |
int budget, local_scheduler_level, scheduler_id; |
local_scheduler_level = CBSSTAR_get_local_scheduler_level_from_pid(fsf_cbsstar_level, exec_shadow); |
scheduler_id = CBSSTAR_get_local_scheduler_id_from_pid(fsf_cbsstar_level, exec_shadow); |
local_scheduler_level = SERVER_get_local_scheduler_level_from_pid(fsf_server_level, exec_shadow); |
scheduler_id = SERVER_get_local_scheduler_id_from_pid(fsf_server_level, exec_shadow); |
if (proc_table[exec_shadow].task_level != local_scheduler_level) return 0; |
161,7 → 162,7 |
if (next_budget != NULL && next_period != NULL) { |
CBSSTAR_getbudgetinfo(fsf_cbsstar_level, &Q, &T, budget); |
SERVER_getbudgetinfo(fsf_server_level, &Q, &T, budget); |
#ifdef FSF_DEBUG |
kern_printf("(budget %d Q=%d T=%d)",budget,(int)Q,(int)T); |
/shark/trunk/ports/first/include/comm_message.h |
---|
File deleted |
/shark/trunk/ports/first/include/posix.h |
---|
File deleted |
/shark/trunk/ports/first/include/grubstar.h |
---|
0,0 → 1,182 |
/* |
* Project: S.Ha.R.K. |
* |
* Coordinators: |
* Giorgio Buttazzo <giorgio@sssup.it> |
* Paolo Gai <pj@gandalf.sssup.it> |
* |
* Authors : |
* Paolo Gai <pj@gandalf.sssup.it> |
* Massimiliano Giorgi <massy@gandalf.sssup.it> |
* Luca Abeni <luca@gandalf.sssup.it> |
* (see the web pages for full authors list) |
* |
* ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy) |
* |
* http://www.sssup.it |
* http://retis.sssup.it |
* http://shark.sssup.it |
*/ |
/* |
------------ |
CVS : $Id: grubstar.h,v 1.1 2003-09-30 09:26:57 giacomo Exp $ |
File: $File$ |
Revision: $Revision: 1.1 $ |
Last update: $Date: 2003-09-30 09:26:57 $ |
------------ |
This file contains the budget support for the multiapplication |
scheduling algorithm proposed in the framework of the FIRST Project |
Title: |
CBSSTAR |
Task Models Accepted: |
None! |
Guest Models Accepted: |
BUDGET_TASK_MODEL - A task that is attached to a budget |
int b; --> the number of the budget which the task is attached to |
Description: |
This module schedule its tasks following the CBS scheme. |
Every task is inserted using the guest calls. |
The module defines a limited set of budgets that the application |
can use. Every guest task will use a particular budget; FIFO |
scheduling is used inside a budget to schedule more than one ready |
task attached to the same budget. |
The tasks are inserted in an EDF level (or similar) with a JOB_TASK_MODEL, |
and the CBS level expects that the task is scheduled with the absolute |
deadline passed in the model. |
This module tries to implement a simplified version of the guest |
task interface: |
- To insert a guest task, use guest_create |
- When a task is dispatched, use guest_dispatch |
- When a task have to be suspended, you have to use: |
-> preemption: use guest_epilogue |
-> synchronization, end: use guest_end |
Remember: no check is done on the budget number passed with the model!!! |
Exceptions raised: |
XUNVALID_TASK |
This level doesn't support normal tasks, but just guest tasks. |
When a task operation is called, an exception is raised. |
Restrictions & special features: |
- This level doesn't manage the main task. |
- At init time we have to specify: |
. guarantee check |
(when all task are created the system will check that the task_set |
will not use more than the available bandwidth) |
- A function to return the used bandwidth of the level is provided. |
- A function is provided to allocate a buffer. |
*/ |
/* |
* Copyright (C) 2002 Paolo Gai |
* |
* This program is free software; you can redistribute it and/or modify |
* it under the terms of the GNU General Public License as published by |
* the Free Software Foundation; either version 2 of the License, or |
* (at your option) any later version. |
* |
* This program is distributed in the hope that it will be useful, |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
* GNU General Public License for more details. |
* |
* You should have received a copy of the GNU General Public License |
* along with this program; if not, write to the Free Software |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
* |
*/ |
#ifndef __CBSSTAR_H__ |
#define __CBSSTAR_H__ |
#include <kernel/kern.h> |
//#include <ll/ll.h> |
//#include <kernel/config.h> |
//#include <sys/types.h> |
//#include <kernel/types.h> |
//#include <modules/codes.h> |
/* ----------------------------------------------------------------------- |
BUDGET_TASK_MODEL: a model for guest tasks |
----------------------------------------------------------------------- */ |
#define BUDGET_PCLASS 0x0600 |
typedef struct { |
TASK_MODEL t; |
int b; |
} BUDGET_TASK_MODEL; |
#define budget_task_default_model(m,buf) \ |
task_default_model((m).t, BUDGET_PCLASS), \ |
(m).b = (buf); |
/* some constants for registering the Module in the right place */ |
#define CBSSTAR_LEVELNAME "CBSSTAR" |
#define CBSSTAR_LEVEL_CODE 106 |
#define CBSSTAR_LEVEL_VERSION 1 |
typedef struct { |
int command; |
void *param; |
} CBSSTAR_command_message; |
typedef struct { |
int budget; |
TIME T,Q; |
} CBSSTAR_mod_budget; |
/* Registration function: |
int N Maximum number of budgets allocated for the applications |
LEVEL master the level that must be used as master level for the |
CBS tasks |
*/ |
LEVEL CBSSTAR_register_level(int n, LEVEL master); |
/* Allocates a budget to be used for an application. |
Input parameters: |
Q The budget |
T The period of the budget |
Return value: |
0..N The ID of the budget |
-1 no more free budgets |
-2 The budgets allocated locally to this module have bandwidth > 1 |
-3 wrong LEVEL id |
*/ |
int CBSSTAR_setbudget(LEVEL l, TIME Q, TIME T, LEVEL local_scheduler_level, int scheduler_id); |
int CBSSTAR_removebudget(LEVEL l, int budget); |
int CBSSTAR_adjust_budget(LEVEL l, TIME Q, TIME T, int budget); |
int CBSSTAR_getbudgetinfo(LEVEL l, TIME *Q, TIME *T, int budget); |
int CBSSTAR_was_budget_overran(LEVEL l, int budget); |
int CBSSTAR_is_active(LEVEL l, int budget); |
int CBSSTAR_get_local_scheduler_level_from_budget(LEVEL l, int budget); |
int CBSSTAR_get_local_scheduler_level_from_pid(LEVEL l, PID p); |
int CBSSTAR_get_local_scheduler_id_from_budget(LEVEL l, int budget); |
int CBSSTAR_get_local_scheduler_id_from_pid(LEVEL l, PID p); |
#endif |
/shark/trunk/ports/first/include/fsf_contract.h |
---|
18,8 → 18,6 |
#include "fsf_configuration_parameters.h" |
#include "fsf_opaque_types.h" |
#include "posix.h" |
#include "cbsstar.h" |
#include "edfstar.h" |
#include "rmstar.h" |
#include "posixstar.h" |
28,7 → 26,7 |
#define _FSF_CONTRACT_H_ |
/* S.Ha.R.K. Init */ |
int FSF_register_module(int posix_level, int cbsstar_level); |
int FSF_register_module(int server_level); |
////////////////////////////////////////////////////////////////// |
// BASIC TYPES AND CONSTANTS |
92,12 → 90,10 |
#define FSF_ERR_NO_RENEGOTIATION_REQUESTED 2003006 |
#define FSF_ERR_CONTRACT_REJECTED 2003007 |
#define FSF_ERR_TOO_MANY_SERVERS 2003008 |
#define FSF_ERR_BIND_THREAD 2003009 |
#define FSF_ERR_UNBIND_THREAD 2003010 |
#define FSF_ERR_CREATE_THREAD 2003011 |
#define FSF_ERR_SERVER_USED 2003012 |
#define FSF_ERR_INVALID_SERVER 2003013 |
#define FSF_ERR_CREATE_SERVER 2003014 |
#define FSF_ERR_CREATE_THREAD 2003009 |
#define FSF_ERR_SERVER_USED 2003010 |
#define FSF_ERR_INVALID_SERVER 2003011 |
#define FSF_ERR_CREATE_SERVER 2003012 |
////////////////////////////////////////////////////////////// |
// CONTRACT PARAMETERS |
246,11 → 242,15 |
(fsf_contract_parameters_t *contract, |
fsf_scheduler_id_t local_scheduler_id); |
//Description: Set the local scheduler |
int |
fsf_get_local_scheduler_parameter |
(const fsf_contract_parameters_t *contract, |
fsf_scheduler_id_t *local_scheduler_id); |
//Description: Get the local scheduler |
////////////////////////////////////////////////////////////// |
// SYNCHRONIZATION OBJECTS |
////////////////////////////////////////////////////////////// |
334,84 → 334,20 |
//are being scheduled by the fsf scheduler. |
int |
fsf_negotiate_contract_for_new_thread |
(const fsf_contract_parameters_t *contract, |
fsf_server_id_t *server, |
pthread_t *thread, |
pthread_attr_t *attr, |
fsf_thread_code_t thread_code, |
void *arg, |
void *rt_arg); |
fsf_create_thread |
(fsf_server_id_t server, |
pthread_t *thread, |
pthread_attr_t *attr, |
fsf_thread_code_t thread_code, |
void *arg, |
void *local_scheduler_arg); |
//Description: This operation negotiates a contract for a new server, |
//creates a thread and binds it to the server. If the contract is |
//accepted, the operation creates a thread with the arguments thread, |
//attr, thread_code and arg as they are defined for the |
//pthread_create() POSIX function call, and attaches it to the fsf |
//scheduler. Then, it binds the created thread to the new server. It |
//returns zero and puts the server identification number in the |
//location pointed to by the server input parameter. The attr |
//parameter is overwritten as necessary to introduce the adequate |
//scheduling policy and priority, according to the preemption level |
//given in the contract and the fsf_priority_map() function defined by |
//the user. If the contract is rejected, the thread is not created and |
//the corresponding error is returned. |
//Description: This operation creates a new thread inside a specific |
//server. The local_scheduler_arg parameter is used to pass specific |
//parameters to local scheduler. These parameters are application |
//depented. |
int |
fsf_negotiate_contract_for_myself |
(const fsf_contract_parameters_t *contract, |
fsf_server_id_t *server, |
void *rt_arg); |
//Description: This operation negotiates a contract for a new |
//server, and binds the calling thread to it. If the contract is |
//accepted it returns zero and copies the server identification |
//number in the location pointed to by the server input parameter. |
//If it is rejected, an error is returned. |
//Implementation dependent issue: In order to allow the usage of |
//application defined schedulers, the calling thread must not have the |
//SCHED_APP scheduling policy and at the same time be attached to an |
//application scheduler different than the fsf scheduler; in such case, |
//an error is returned. After a successful call the calling thread |
//will have the SCHED_APP scheduling policy and will be attached to |
//the fsf scheduler. |
int |
fsf_bind_thread_to_server |
(fsf_server_id_t server, |
pthread_t thread, |
void *rt_arg); |
//Description: This operation associates a thread with a server, which |
//means that it starts consuming the server's budget and is executed |
//according to the contract established for that server. If the thread |
//is already bound to another server, it is effectively unbound from |
//it and bound to the specified one. |
//Implementation dependent issue: In order to allow the usage of |
//application defined schedulers, the given thread must not have the |
//scheduling policy SCHED_APP and at the same time be attached to an |
//application scheduler different than the fsf scheduler. |
//FIRST project development issue: In this phase of the project, only |
//one thread is allowed to be bound to a server, sharing a server by |
//multiple threads is planned to be allowed in the next phase of |
//the project. |
int |
fsf_unbind_thread_from_server (pthread_t thread); |
//Description: This operation unbinds a thread from a server. |
//Since threads with no server associated are not allow to execute, |
//they remain in a dormant state until they are either eliminated or |
//bound again. |
//Implementation dependent issue: in the implementation with an |
//application scheduler, the thread is still attached to the fsf |
//scheduler, but suspended. |
int |
fsf_get_server |
(fsf_server_id_t *server, |
pthread_t thread); |
/shark/trunk/ports/first/include/fsf_server.h |
---|
0,0 → 1,33 |
#ifndef _FSF_SERVER_H_ |
#define _FSF_SERVER_H_ |
#define FSF_CBSSTAR |
#ifdef FSF_CBSSTAR |
#include "cbsstar.h" |
#define SERVER_setbudget CBSSTAR_setbudget |
#define SERVER_adjust_budget CBSSTAR_adjust_budget |
#define SERVER_removebudget CBSSTAR_removebudget |
#define SERVER_get_local_scheduler_id_from_budget CBSSTAR_get_local_scheduler_id_from_budget |
#define SERVER_get_local_scheduler_id_from_pid CBSSTAR_get_local_scheduler_id_from_pid |
#define SERVER_get_local_scheduler_level_from_budget CBSSTAR_get_local_scheduler_level_from_budget |
#define SERVER_get_local_scheduler_level_from_pid CBSSTAR_get_local_scheduler_level_from_pid |
#define SERVER_getbudgetinfo CBSSTAR_getbudgetinfo |
#endif |
#ifdef FSF_GRUBSTAR |
#include "grubstar.h" |
#define SERVER_setbudget GRUBSTAR_setbudget |
#define SERVER_adjust_budget GRUBSTAR_adjust_budget |
#define SERVER_removebudget GRUBSTAR_removebudget |
#define SERVER_get_local_scheduler_id_from_server GRUBSTAR_get_local_scheduler_id_from_server |
#define SERVER_get_local_scheduler_id_from_pid GRUBSTAR_get_local_scheduler_id_from_pid |
#define SERVER_get_local_scheduler_level_from_server GRUBSTAR_get_local_scheduler_level_from_server |
#define SERVER_get_local_scheduler_level_from_pid GRUBSTAR_get_local_scheduler_level_from_pid |
#endif |
#endif |
/shark/trunk/ports/first/modules/posix.c |
---|
File deleted |
/shark/trunk/ports/first/modules/cbsstar.c |
---|
67,6 → 67,7 |
struct timespec dline; /* deadline */ |
int dline_timer; /* oslib event for budget reactivation*/ |
int vtimer; |
int avail; /* current budget */ |
LEVEL l; /* Current CBSSTAR level */ |
81,9 → 82,9 |
}; |
#define CBSSTAR_NOACTIVE 0 |
#define CBSSTAR_ACTIVE 1 |
#define CBSSTAR_INIT 2 |
#define CBSSTAR_NOACTIVE 0 |
#define CBSSTAR_ACTIVE 1 |
#define CBSSTAR_RECLAIMING 2 |
typedef struct { |
level_des l; /* the standard level descriptor */ |
95,6 → 96,7 |
int tb[MAX_PROC]; /* link task->budget (used in guest_end) */ |
bandwidth_t U; /*+ the used bandwidth by the server +*/ |
bandwidth_t Uf; /*+ the actual used bandwidth by the server +*/ |
int cap_lev; |
154,20 → 156,56 |
} |
} |
kern_gettime(&b->dline); |
ADDUSEC2TIMESPEC(b->T, &b->dline); |
if (b->flags == CBSSTAR_NOACTIVE) { |
kern_gettime(&b->dline); |
ADDUSEC2TIMESPEC(b->T, &b->dline); |
b->dline_timer=kern_event_post(&b->dline, CBSSTAR_deadline_timer_hardreservation, b); |
} |
#ifdef CBSSTAR_DEBUG |
cbsstar_printf(")"); |
#endif |
} |
void CBSSTAR_ANC(void *arg) |
{ |
struct budget_struct *b = arg; |
CBSSTAR_level_des *lev=(CBSSTAR_level_des *)level_table[b->l]; |
#ifdef CBSSTAR_DEBUG |
cbsstar_printf("(CS:Rec:"); |
#endif |
b->vtimer = NIL; |
if (b->current != NIL && iq_query_first(&(b->tasks)) != NIL) { |
bandwidth_t bw; |
b->flags=CBSSTAR_RECLAIMING; |
bw = (MAX_BANDWIDTH / b->T) * b->Q; |
lev->Uf -= bw; |
#ifdef CBSSTAR_DEBUG |
cbsstar_printf("%ld",(long)bw); |
#endif |
} |
#ifdef CBSSTAR_DEBUG |
cbsstar_printf(")"); |
#endif |
} |
static void CBSSTAR_activation(CBSSTAR_level_des *lev, |
PID p) |
PID p, |
struct timespec *acttime) |
{ |
JOB_TASK_MODEL job; |
struct budget_struct *b = &lev->b[lev->tb[p]]; |
174,11 → 212,46 |
/* we have to check if the deadline and the wcet are correct before |
activating a new task or an old task... */ |
/* and the capacity */ |
if (b->flags == CBSSTAR_INIT) { |
b->avail = b->Q; |
b->flags = CBSSTAR_ACTIVE; |
/* we have to check if the deadline and the wcet are correct before |
* activating a new task or an old task... */ |
/* check 1: if the deadline is before than the actual scheduling time */ |
/* check 2: if ( avail_time >= (cbs_dline - acttime)* (wcet/period) ) |
* (rule 7 in the CBS article!) */ |
TIME t; |
struct timespec t2,t3; |
t = (b->T * b->avail) / b->Q; |
t3.tv_sec = t / 1000000; |
t3.tv_nsec = (t % 1000000) * 1000; |
SUBTIMESPEC(&b->dline, acttime, &t2); |
if (/* 1 */ TIMESPEC_A_LT_B(&b->dline, acttime) || |
/* 2 */ TIMESPEC_A_GT_B(&t3, &t2) ) { |
TIMESPEC_ASSIGN(&b->dline, acttime); |
ADDUSEC2TIMESPEC(b->T, &b->dline); |
b->avail=b->Q; |
if (b->flags==CBSSTAR_RECLAIMING) { |
bandwidth_t bw; |
bw = (MAX_BANDWIDTH / b->T) * b->Q; |
lev->Uf += bw; |
#ifdef CBSSTAR_DEBUG |
cbsstar_printf("BW=%ld",(long)bw); |
#endif |
} |
b->flags=CBSSTAR_ACTIVE; |
} |
else { |
SUBTIMESPEC(&b->dline, &t3, &t2); |
b->vtimer = kern_event_post(&t2, CBSSTAR_ANC, (void *)&b); |
} |
/* record the current task inserted in the master module */ |
212,7 → 285,16 |
if (b->avail <= 0) b->flags = CBSSTAR_NOACTIVE; |
if (TIMESPEC_A_LT_B(&b->dline, &schedule_time)) { |
/* we modify the deadline ... */ |
TIMESPEC_ASSIGN(&b->dline, &schedule_time); |
ADDUSEC2TIMESPEC(b->T, &b->dline); |
} |
if (b->flags == CBSSTAR_NOACTIVE && b->dline_timer == NIL) { |
b->dline_timer=kern_event_post(&b->dline, CBSSTAR_deadline_timer_hardreservation, b); |
} |
} |
317,14 → 399,12 |
lev->tb[p] = budget->b; |
kern_gettime(&lev->b[budget->b].dline); |
ADDUSEC2TIMESPEC(lev->b[budget->b].T,&lev->b[budget->b].dline); |
if (lev->b[budget->b].current == NIL && lev->b[budget->b].flags ) { |
/* This is the first task in the budget, |
the task have to be inserted into the master module */ |
CBSSTAR_activation(lev,p); |
struct timespec t; |
kern_gettime(&t); |
CBSSTAR_activation(lev,p,&t); |
} else { |
/* The budget is not empty, another task is already into the |
master module, so the task is inserted at the end of the budget |
332,11 → 412,6 |
iq_insertlast(p,&lev->b[budget->b].tasks); |
} |
if (lev->b[budget->b].dline_timer == NIL) { |
lev->b[budget->b].dline_timer = kern_event_post(&lev->b[budget->b].dline, CBSSTAR_deadline_timer_hardreservation, &lev->b[budget->b]); |
} |
#ifdef CBSSTAR_DEBUG |
cbsstar_printf(")"); |
#endif |
358,8 → 433,7 |
/* remove the task from execution (or from the ready queue) */ |
if (lev->b[lev->tb[p]].current == p) { |
CBSSTAR_account_capacity(lev,p); |
CBSSTAR_account_capacity(lev,p); |
/* remove the task from the master module */ |
level_table[ lev->scheduling_level ]-> |
private_extract(lev->scheduling_level, p); |
372,10 → 446,11 |
else if (lev->b[lev->tb[p]].flags) { |
/* if so, insert the new task into the master module */ |
PID n; |
struct timespec t; |
kern_gettime(&t); |
n = iq_getfirst(&lev->b[lev->tb[p]].tasks); |
CBSSTAR_activation(lev,n); |
CBSSTAR_activation(lev,n,&t); // it modifies b[lev->tb[p]].current |
} |
else |
lev->b[lev->tb[p]].current=NIL; |
484,9 → 559,9 |
lev->b[i].dline_timer = NIL; |
lev->b[i].avail = 0; |
lev->b[i].current = -1; |
lev->b[i].flags = CBSSTAR_INIT; |
lev->b[i].flags = CBSSTAR_ACTIVE; |
lev->b[i].l=l; |
iq_init(&lev->b[i].tasks, &freedesc, 0); |
iq_init(&lev->b[i].tasks, /* &freedesc */NULL, 0); |
} |
lev->n = n; |
496,6 → 571,7 |
lev->tb[i] = NIL; |
lev->U = 0; |
lev->Uf = 0; |
lev->cap_lev = NIL; |
lev->scheduling_level = master; |
523,11 → 599,13 |
if (Q< T && MAX_BANDWIDTH - lev->U > b) { |
lev->U += b; |
lev->Uf += b; |
lev->freebudgets++; |
lev->b[r].Q = Q; |
lev->b[r].T = T; |
lev->b[r].avail = Q; |
lev->b[r].flags = CBSSTAR_ACTIVE; |
lev->b[r].loc_sched_id = scheduler_id; |
lev->b[r].loc_sched_level = local_scheduler_level; |
557,8 → 635,7 |
lev->b[budget].dline_timer = NIL; |
lev->b[budget].avail = 0; |
lev->b[budget].current = -1; |
lev->b[budget].flags = CBSSTAR_INIT; |
iq_init(&lev->b[budget].tasks, &freedesc, 0); |
lev->b[budget].flags = CBSSTAR_ACTIVE; |
return 0; |
/shark/trunk/ports/first/modules/edfstar.c |
---|
16,16 → 16,6 |
* http://shark.sssup.it |
*/ |
/** |
------------ |
CVS : $Id: edfstar.c,v 1.4 2003-09-17 09:43:47 giacomo Exp $ |
File: $File$ |
Revision: $Revision: 1.4 $ |
Last update: $Date: 2003-09-17 09:43:47 $ |
------------ |
**/ |
/* |
* Copyright (C) 2001 Paolo Gai |
* |
63,8 → 53,7 |
#include <kernel/iqueue.h> |
/* for BUDGET_TASK_MODEL */ |
#include "cbsstar.h" |
#include <comm_message.h> |
#include "fsf_server.h" |
/* |
* DEBUG stuffs begin |
300,45 → 289,6 |
private_dispatch(lev->scheduling_level,p,nostop); |
} |
static int EDFSTAR_private_change_level(LEVEL l, PID p) |
{ |
EDFSTAR_level_des *lev = (EDFSTAR_level_des *)(level_table[l]); |
/* Change task level */ |
if (lev->flag[p] & EDFSTAR_CHANGE_LEVEL) { |
STD_command_message msg; |
proc_table[p].status = SLEEP; |
level_table[lev->scheduling_level]->private_extract(lev->scheduling_level,p); |
iq_extract(p,&lev->ready); |
if (lev->deadline_timer[p] != -1) |
kern_event_delete(lev->deadline_timer[p]); |
EDFSTAR_check_preemption(lev); |
lev->nact[p] = 0; |
lev->budget[p] = -1; |
proc_table[p].task_level = lev->new_level[p]; |
/* Send change level command to local scheduler */ |
msg.command = STD_ACTIVATE_TASK; |
msg.param = NULL; |
level_table[ lev->new_level[p] ]->public_message(lev->new_level[p],p,&msg); |
return 1; |
} |
return 0; |
} |
static void EDFSTAR_public_epilogue(LEVEL l, PID p) |
{ |
EDFSTAR_level_des *lev = (EDFSTAR_level_des *)(level_table[l]); |
347,8 → 297,6 |
edfstar_printf("(E:epi "); |
#endif |
if (EDFSTAR_private_change_level(l, p)) return; |
/* check if the wcet is finished... */ |
if (proc_table[p].avail_time <= 0 && proc_table[p].control&CONTROL_CAP) { |
/* wcet finished: disable wcet event and count wcet miss */ |
432,8 → 380,6 |
{ |
EDFSTAR_level_des *lev = (EDFSTAR_level_des *)(level_table[l]); |
struct timespec temp; |
STD_command_message *msg; |
HARD_TASK_MODEL *h; |
#ifdef EDFSTAR_DEBUG |
edfstar_printf("(E:ecy "); |
444,8 → 390,6 |
/* Task EndCycle */ |
case (long)(NULL): |
if (EDFSTAR_private_change_level(l,p)) return 0; |
/* we call guest_end directly here because the same task may |
be reinserted in the queue before calling the preemption check! */ |
level_table[ lev->scheduling_level ]-> |
504,50 → 448,8 |
default: |
msg = (STD_command_message *)m; |
#ifdef EDFSTAR_DEBUG |
edfstar_printf("(E:MSG %d)",msg->command); |
#endif |
switch(msg->command) { |
case STD_SET_NEW_MODEL: |
/* if the EDFSTAR_task_create is called, then the pclass must be a |
valid pclass. */ |
h=(HARD_TASK_MODEL *)(msg->param); |
break; |
/* now we know that m is a valid model */ |
lev->wcet[p] = h->wcet; |
lev->period[p] = h->mit; |
lev->flag[p] = 0; |
lev->deadline_timer[p] = -1; |
lev->dline_miss[p] = 0; |
lev->wcet_miss[p] = 0; |
lev->nact[p] = 0; |
break; |
case STD_SET_NEW_LEVEL: |
lev->flag[p] |= EDFSTAR_CHANGE_LEVEL; |
lev->new_level[p] = (int)(msg->param); |
break; |
case STD_ACTIVATE_TASK: |
/* Enable wcet check */ |
proc_table[p].avail_time = lev->wcet[p]; |
proc_table[p].wcet = lev->wcet[p]; |
proc_table[p].control |= CONTROL_CAP; |
EDFSTAR_public_activate(l, p); |
break; |
} |
} |
return 0; |
} |
/shark/trunk/ports/first/modules/rmstar.c |
---|
16,16 → 16,6 |
* http://shark.sssup.it |
*/ |
/** |
------------ |
CVS : $Id: rmstar.c,v 1.1 2003-09-17 09:13:50 giacomo Exp $ |
File: $File$ |
Revision: $Revision: 1.1 $ |
Last update: $Date: 2003-09-17 09:13:50 $ |
------------ |
**/ |
/* |
* Copyright (C) 2001 Paolo Gai |
* |
61,8 → 51,7 |
/* #include "iqueue.h" Now iqueues are the only queue type into the kernel */ |
/* for BUDGET_TASK_MODEL */ |
#include "cbsstar.h" |
#include <comm_message.h> |
#include "fsf_server.h" |
/* |
* DEBUG stuffs begin |
224,44 → 213,6 |
#endif |
} |
static int RMSTAR_private_change_level(LEVEL l, PID p) |
{ |
RMSTAR_level_des *lev = (RMSTAR_level_des *)(level_table[l]); |
/* Change task level */ |
if (lev->flag[p] & RMSTAR_CHANGE_LEVEL) { |
STD_command_message msg; |
proc_table[p].status = SLEEP; |
level_table[lev->scheduling_level]->private_extract(lev->scheduling_level,p); |
iq_extract(p,&lev->ready); |
if (lev->deadline_timer[p] != -1) |
kern_event_delete(lev->deadline_timer[p]); |
RMSTAR_check_preemption(lev); |
lev->nact[p] = 0; |
lev->budget[p] = -1; |
proc_table[p].task_level = lev->new_level[p]; |
/* Send change level command to local scheduler */ |
msg.command = STD_ACTIVATE_TASK; |
msg.param = NULL; |
level_table[ lev->new_level[p] ]->public_message(lev->new_level[p],p,&msg); |
return 1; |
} |
return 0; |
} |
static void RMSTAR_timer_guest_deadline(void *par) |
{ |
PID p = (PID) par; |
332,8 → 283,6 |
rmstar_printf("(E:epi "); |
#endif |
if (RMSTAR_private_change_level(l, p)) return; |
/* check if the wcet is finished... */ |
if (proc_table[p].avail_time <= 0 && proc_table[p].control&CONTROL_CAP) { |
/* wcet finished: disable wcet event and count wcet miss */ |
417,8 → 366,6 |
{ |
RMSTAR_level_des *lev = (RMSTAR_level_des *)(level_table[l]); |
struct timespec temp; |
STD_command_message *msg; |
HARD_TASK_MODEL *h; |
#ifdef RMSTAR_DEBUG |
rmstar_printf("(E:ecy "); |
430,7 → 377,6 |
/* Task EndCycle */ |
case (long)(NULL): |
if (RMSTAR_private_change_level(l,p)) return 0; |
/* we call guest_end directly here because the same task may |
be reinserted in the queue before calling the preemption check! */ |
level_table[ lev->scheduling_level ]-> |
486,48 → 432,7 |
break; |
default: |
msg = (STD_command_message *)m; |
#ifdef RMSTAR_DEBUG |
rmstar_printf("(E:MSG %d)",msg->command); |
#endif |
switch(msg->command) { |
case STD_SET_NEW_MODEL: |
/* if the RMSTAR_task_create is called, then the pclass must be a |
valid pclass. */ |
h=(HARD_TASK_MODEL *)(msg->param); |
/* now we know that m is a valid model */ |
lev->wcet[p] = h->wcet; |
lev->period[p] = h->mit; |
lev->flag[p] = 0; |
lev->deadline_timer[p] = -1; |
lev->dline_miss[p] = 0; |
lev->wcet_miss[p] = 0; |
lev->nact[p] = 0; |
break; |
case STD_SET_NEW_LEVEL: |
lev->flag[p] |= RMSTAR_CHANGE_LEVEL; |
lev->new_level[p] = (int)(msg->param); |
break; |
case STD_ACTIVATE_TASK: |
/* Enable wcet check */ |
proc_table[p].avail_time = lev->wcet[p]; |
proc_table[p].wcet = lev->wcet[p]; |
proc_table[p].control |= CONTROL_CAP; |
RMSTAR_public_activate(l, p); |
break; |
} |
} |
return 0; |
/shark/trunk/ports/first/modules/grubstar.c |
---|
0,0 → 1,707 |
/* |
* Project: S.Ha.R.K. |
* |
* Coordinators: |
* Giorgio Buttazzo <giorgio@sssup.it> |
* Paolo Gai <pj@gandalf.sssup.it> |
* |
* Authors : |
* Paolo Gai <pj@gandalf.sssup.it> |
* Massimiliano Giorgi <massy@gandalf.sssup.it> |
* Luca Abeni <luca@gandalf.sssup.it> |
* (see the web pages for full authors list) |
* |
* ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy) |
* |
* http://www.sssup.it |
* http://retis.sssup.it |
* http://shark.sssup.it |
*/ |
/* |
* Copyright (C) 2002 Paolo Gai |
* |
* This program is free software; you can redistribute it and/or modify |
* it under the terms of the GNU General Public License as published by |
* the Free Software Foundation; either version 2 of the License, or |
* (at your option) any later version. |
* |
* This program is distributed in the hope that it will be useful, |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
* GNU General Public License for more details. |
* |
* You should have received a copy of the GNU General Public License |
* along with this program; if not, write to the Free Software |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
* |
*/ |
#include "cbsstar.h" |
/* |
* DEBUG stuffs begin |
*/ |
//#define CBSSTAR_DEBUG |
#ifdef CBSSTAR_DEBUG |
static __inline__ void fake_printf(char *fmt, ...) {} |
#define cbsstar_printf kern_printf |
#define cbsstar_printf2 kern_printf |
#define cbsstar_printf3 kern_printf |
//#define cbsstar_printf fake_printf |
//#define cbsstar_printf2 fake_printf |
//#define cbsstar_printf3 fake_printf |
#endif |
/* |
* DEBUG stuffs end |
*/ |
/* this structure contains the status for a single budget */ |
struct budget_struct { |
TIME Q; /* budget */ |
TIME T; /* period */ |
struct timespec dline; /* deadline */ |
int dline_timer; /* oslib event for budget reactivation*/ |
int vtimer; |
int avail; /* current budget */ |
LEVEL l; /* Current CBSSTAR level */ |
int loc_sched_id; /* Local scheduler id */ |
LEVEL loc_sched_level; /* Local scheduler level */ |
PID current; /* the task currently put in execution */ |
int flags; |
IQUEUE tasks; /* a FIFO queue for the tasks handled |
using the budget */ |
}; |
#define CBSSTAR_NOACTIVE 0 |
#define CBSSTAR_ACTIVE 1 |
#define CBSSTAR_RECLAIMING 2 |
typedef struct { |
level_des l; /* the standard level descriptor */ |
struct budget_struct *b; /* the budgets! */ |
int n; /* the maximum index for the budgets */ |
int freebudgets; /* number of free budgets; starts from n */ |
int tb[MAX_PROC]; /* link task->budget (used in guest_end) */ |
bandwidth_t U; /*+ the used bandwidth by the server +*/ |
bandwidth_t Uf; /*+ the actual used bandwidth by the server +*/ |
int cap_lev; |
LEVEL scheduling_level; |
} CBSSTAR_level_des; |
static void CBSSTAR_deadline_timer_hardreservation(void *a) |
{ |
struct budget_struct *b = a; |
PID p; |
#ifdef CBSSTAR_DEBUG |
cbsstar_printf("(CS:HrdRes:"); |
#endif |
b->dline_timer = NIL; |
/* we modify the deadline according to rule 4 ... */ |
/* there is a while because if the wcet is << than the system tick |
we need to postpone the deadline many times */ |
b->avail += b->Q; |
if (b->avail > b->Q) b->avail = b->Q; |
if (b->avail > 0) b->flags = CBSSTAR_ACTIVE; |
/* avail may be <0 because a task executed via a shadow fo many time |
b->current == NIL only if the prec task was finished and there |
was not any other task to be put in the ready queue |
... we are now activating the next task */ |
if (b->current == NIL && b->flags) { |
if (iq_query_first(&(b->tasks)) != NIL) { |
CBSSTAR_level_des *lev; |
JOB_TASK_MODEL job; |
p = iq_getfirst(&b->tasks); |
#ifdef CBSSTAR_DEBUG |
cbsstar_printf("%d",p); |
#endif |
kern_gettime(&b->dline); |
ADDUSEC2TIMESPEC(b->T, &b->dline); |
b->current = p; |
lev = (CBSSTAR_level_des *)(level_table[b->l]); |
job_task_default_model(job, b->dline); |
job_task_def_noexc(job); |
level_table[ lev->scheduling_level ]-> |
private_insert(lev->scheduling_level, p, (TASK_MODEL *)&job); |
event_need_reschedule(); |
} |
} |
if (b->flags == CBSSTAR_NOACTIVE) { |
kern_gettime(&b->dline); |
ADDUSEC2TIMESPEC(b->T, &b->dline); |
b->dline_timer=kern_event_post(&b->dline, CBSSTAR_deadline_timer_hardreservation, b); |
} |
#ifdef CBSSTAR_DEBUG |
cbsstar_printf(")"); |
#endif |
} |
void CBSSTAR_ANC(void *arg) |
{ |
struct budget_struct *b = arg; |
CBSSTAR_level_des *lev=(CBSSTAR_level_des *)level_table[b->l]; |
#ifdef CBSSTAR_DEBUG |
cbsstar_printf("(CS:Rec:"); |
#endif |
b->vtimer = NIL; |
if (b->current != NIL && iq_query_first(&(b->tasks)) != NIL) { |
bandwidth_t bw; |
b->flags=CBSSTAR_RECLAIMING; |
bw = (MAX_BANDWIDTH / b->T) * b->Q; |
lev->Uf -= bw; |
#ifdef CBSSTAR_DEBUG |
cbsstar_printf("%ld",(long)bw); |
#endif |
} |
#ifdef CBSSTAR_DEBUG |
cbsstar_printf(")"); |
#endif |
} |
static void CBSSTAR_activation(CBSSTAR_level_des *lev, |
PID p, |
struct timespec *acttime) |
{ |
JOB_TASK_MODEL job; |
struct budget_struct *b = &lev->b[lev->tb[p]]; |
/* we have to check if the deadline and the wcet are correct before |
activating a new task or an old task... */ |
/* we have to check if the deadline and the wcet are correct before |
* activating a new task or an old task... */ |
/* check 1: if the deadline is before than the actual scheduling time */ |
/* check 2: if ( avail_time >= (cbs_dline - acttime)* (wcet/period) ) |
* (rule 7 in the CBS article!) */ |
TIME t; |
struct timespec t2,t3; |
t = (b->T * b->avail) / b->Q; |
t3.tv_sec = t / 1000000; |
t3.tv_nsec = (t % 1000000) * 1000; |
SUBTIMESPEC(&b->dline, acttime, &t2); |
if (/* 1 */ TIMESPEC_A_LT_B(&b->dline, acttime) || |
/* 2 */ TIMESPEC_A_GT_B(&t3, &t2) ) { |
TIMESPEC_ASSIGN(&b->dline, acttime); |
ADDUSEC2TIMESPEC(b->T, &b->dline); |
b->avail=b->Q; |
if (b->flags==CBSSTAR_RECLAIMING) { |
bandwidth_t bw; |
bw = (MAX_BANDWIDTH / b->T) * b->Q; |
lev->Uf += bw; |
#ifdef CBSSTAR_DEBUG |
cbsstar_printf("BW=%ld",(long)bw); |
#endif |
} |
b->flags=CBSSTAR_ACTIVE; |
} |
else { |
SUBTIMESPEC(&b->dline, &t3, &t2); |
b->vtimer = kern_event_post(&t2, CBSSTAR_ANC, (void *)&b); |
} |
/* record the current task inserted in the master module */ |
b->current = p; |
job_task_default_model(job, b->dline); |
job_task_def_noexc(job); |
level_table[ lev->scheduling_level ]-> |
private_insert(lev->scheduling_level, p, (TASK_MODEL *)&job); |
} |
static void CBSSTAR_account_capacity(CBSSTAR_level_des *lev, PID p) |
{ |
struct timespec ty; |
TIME tx; |
struct budget_struct *b = &lev->b[lev->tb[p]]; |
if (lev->cap_lev != NIL && b->current == p) { |
kern_event_delete(lev->cap_lev); |
lev->cap_lev = NIL; |
} |
SUBTIMESPEC(&schedule_time, &cap_lasttime, &ty); |
tx = TIMESPEC2USEC(&ty); |
b->avail -= tx; |
#ifdef CBSSTAR_DEBUG |
kern_printf("(CS:Cap p%d av=%d)", p, b->avail); |
#endif |
if (b->avail <= 0) b->flags = CBSSTAR_NOACTIVE; |
if (TIMESPEC_A_LT_B(&b->dline, &schedule_time)) { |
/* we modify the deadline ... */ |
TIMESPEC_ASSIGN(&b->dline, &schedule_time); |
ADDUSEC2TIMESPEC(b->T, &b->dline); |
} |
if (b->flags == CBSSTAR_NOACTIVE && b->dline_timer == NIL) { |
b->dline_timer=kern_event_post(&b->dline, CBSSTAR_deadline_timer_hardreservation, b); |
} |
} |
/* The on-line guarantee is enabled only if the appropriate flag is set... */ |
static int CBSSTAR_public_guarantee(LEVEL l, bandwidth_t *freebandwidth) |
{ |
CBSSTAR_level_des *lev = (CBSSTAR_level_des *)(level_table[l]); |
#ifdef CBSSTAR_DEBUG |
cbsstar_printf("(CS:Gua)"); |
#endif |
if (*freebandwidth >= lev->U) { |
*freebandwidth -= lev->U; |
return 1; |
} |
else |
return 0; |
} |
static void capacity_handler(void *l) |
{ |
CBSSTAR_level_des *lev = l; |
lev->cap_lev = NIL; |
event_need_reschedule(); |
} |
static int CBSSTAR_private_eligible(LEVEL l, PID p) |
{ |
CBSSTAR_level_des *lev = (CBSSTAR_level_des *)(level_table[l]); |
struct budget_struct *b = &lev->b[lev->tb[p]]; |
JOB_TASK_MODEL job; |
/* we have to check if the deadline and the wcet are correct... |
if the CBSSTAR level schedules in background with respect to others |
levels, there can be the case in witch a task is scheduled by |
schedule_time > CBSSTAR_deadline; in this case (not covered in the |
article because if there is only the standard scheduling policy |
this never apply) we reassign the deadline */ |
if (b->current == p) { |
if ( TIMESPEC_A_LT_B(&b->dline, &schedule_time)) { |
if (lev->cap_lev!=NIL) { |
kern_event_delete(lev->cap_lev); |
lev->cap_lev=NIL; |
} |
/* we kill the current activation */ |
level_table[ lev->scheduling_level ]-> |
private_extract(lev->scheduling_level, p); |
/* we modify the deadline ... */ |
TIMESPEC_ASSIGN(&b->dline, &schedule_time); |
ADDUSEC2TIMESPEC(b->T, &b->dline); |
/* and the capacity */ |
b->avail = b->Q; |
b->flags = CBSSTAR_ACTIVE; |
if (b->dline_timer!=NIL) { |
kern_event_delete(b->dline_timer); |
b->dline_timer=NIL; |
} |
/* and, finally, we reinsert the task in the master level */ |
job_task_default_model(job, b->dline); |
job_task_def_noexc(job); |
level_table[ lev->scheduling_level ]-> |
private_insert(lev->scheduling_level, p, (TASK_MODEL *)&job); |
return -1; |
} |
} |
return 0; |
} |
static void CBSSTAR_private_insert(LEVEL l, PID p, TASK_MODEL *m) |
{ |
/* A task has been activated for some reason. Basically, the task is |
inserted in the queue if the queue is empty, otherwise the task is |
inserted into the master module, and an oslib event is posted. */ |
CBSSTAR_level_des *lev = (CBSSTAR_level_des *)(level_table[l]); |
BUDGET_TASK_MODEL *budget; |
if (m->pclass != BUDGET_PCLASS || |
(m->level != 0 && m->level != l)) { |
kern_raise(XINVALID_TASK, p); |
return; |
} |
budget = (BUDGET_TASK_MODEL *)m; |
#ifdef CBSSTAR_DEBUG |
cbsstar_printf("(CS:PriIns:%d:%d", p, budget->b); |
#endif |
if (budget->b == -1) |
return; |
lev->tb[p] = budget->b; |
if (lev->b[budget->b].current == NIL && lev->b[budget->b].flags ) { |
/* This is the first task in the budget, |
the task have to be inserted into the master module */ |
struct timespec t; |
kern_gettime(&t); |
CBSSTAR_activation(lev,p,&t); |
} else { |
/* The budget is not empty, another task is already into the |
master module, so the task is inserted at the end of the budget |
queue */ |
iq_insertlast(p,&lev->b[budget->b].tasks); |
} |
#ifdef CBSSTAR_DEBUG |
cbsstar_printf(")"); |
#endif |
} |
static void CBSSTAR_private_extract(LEVEL l, PID p) |
{ |
CBSSTAR_level_des *lev = (CBSSTAR_level_des *)(level_table[l]); |
#ifdef CBSSTAR_DEBUG |
kern_printf("(CS:Ext:%d)", p); |
#endif |
/* a task is removed from execution for some reasons. It must be |
that it is the first in its budget queue (only the first task in |
a budget queue is put into execution!) */ |
/* remove the task from execution (or from the ready queue) */ |
if (lev->b[lev->tb[p]].current == p) { |
CBSSTAR_account_capacity(lev,p); |
/* remove the task from the master module */ |
level_table[ lev->scheduling_level ]-> |
private_extract(lev->scheduling_level, p); |
/* check if the buffer has someone else to schedule */ |
if (iq_query_first(&lev->b[lev->tb[p]].tasks) == NIL) { |
/* the buffer has no tasks! */ |
lev->b[lev->tb[p]].current = NIL; |
} |
else if (lev->b[lev->tb[p]].flags) { |
/* if so, insert the new task into the master module */ |
PID n; |
struct timespec t; |
kern_gettime(&t); |
n = iq_getfirst(&lev->b[lev->tb[p]].tasks); |
CBSSTAR_activation(lev,n,&t); // it modifies b[lev->tb[p]].current |
} |
else |
lev->b[lev->tb[p]].current=NIL; |
} |
else { |
iq_extract(p, &lev->b[lev->tb[p]].tasks); |
} |
} |
static void CBSSTAR_private_dispatch(LEVEL l, PID p, int nostop) |
{ |
CBSSTAR_level_des *lev = (CBSSTAR_level_des *)(level_table[l]); |
struct timespec ty; |
#ifdef CBSSTAR_DEBUG |
kern_printf("(CS:Dsp:%d)", p); |
#endif |
/* the current task (that is the only one inserted in the master module |
for the corresponding budget) is dispatched. Note that the current |
task is not inserted in any FIFO queue, so the task does not have to |
be extracted! */ |
/* ... then, we dispatch it to the master level */ |
level_table[ lev->scheduling_level ]-> |
private_dispatch(lev->scheduling_level,p,nostop); |
/* ...and finally, we have to post a capacity event */ |
if (!nostop) { |
TIMESPEC_ASSIGN(&ty, &schedule_time); |
ADDUSEC2TIMESPEC(lev->b[lev->tb[p]].avail,&ty); |
lev->cap_lev = kern_event_post(&ty,capacity_handler, lev); |
} |
} |
static void CBSSTAR_private_epilogue(LEVEL l, PID p) |
{ |
CBSSTAR_level_des *lev = (CBSSTAR_level_des *)(level_table[l]); |
struct budget_struct *b = &lev->b[lev->tb[p]]; |
#ifdef CBSSTAR_DEBUG |
kern_printf("(CS:Epi:%d)",p); |
#endif |
if (p==b->current) { |
CBSSTAR_account_capacity(lev,p); |
// L'evento di capacità va cancellato perchè sarà ripristinato nella successiva dispatch |
/* we have to check if the capacity is still available */ |
if (b->flags) { |
/* there is capacity available, maybe it is simply a preemption; |
the task have to return to the ready queue */ |
level_table[ lev->scheduling_level ]-> |
private_epilogue(lev->scheduling_level,p); |
} else { |
/* we kill the current activation */ |
level_table[ lev->scheduling_level ]-> |
private_extract(lev->scheduling_level, p); |
iq_insertfirst(p, &b->tasks); |
b->current = NIL; |
} |
} |
} |
/* Registration functions }*/ |
/*+ Registration function: |
int flags the init flags ... see CBSSTAR.h +*/ |
LEVEL CBSSTAR_register_level(int n, LEVEL master) |
{ |
LEVEL l; /* the level that we register */ |
CBSSTAR_level_des *lev; /* for readableness only */ |
PID i; /* a counter */ |
kern_printf("CBSSTAR_register_level\n"); |
/* request an entry in the level_table */ |
l = level_alloc_descriptor(sizeof(CBSSTAR_level_des)); |
lev = (CBSSTAR_level_des *)level_table[l]; |
/* fill the standard descriptor */ |
lev->l.private_insert = CBSSTAR_private_insert; |
lev->l.private_extract = CBSSTAR_private_extract; |
lev->l.private_eligible = CBSSTAR_private_eligible; |
lev->l.private_dispatch = CBSSTAR_private_dispatch; |
lev->l.private_epilogue = CBSSTAR_private_epilogue; |
lev->l.public_guarantee = CBSSTAR_public_guarantee; |
/* fill the CBSSTAR descriptor part */ |
lev->b = (struct budget_struct *)kern_alloc(sizeof(struct budget_struct)*n); |
for (i=0; i<n; i++) { |
lev->b[i].Q = 0; |
lev->b[i].T = 0; |
NULL_TIMESPEC(&lev->b[i].dline); |
lev->b[i].dline_timer = NIL; |
lev->b[i].avail = 0; |
lev->b[i].current = -1; |
lev->b[i].flags = CBSSTAR_ACTIVE; |
lev->b[i].l=l; |
iq_init(&lev->b[i].tasks, /* &freedesc */NULL, 0); |
} |
lev->n = n; |
lev->freebudgets = 0; |
for (i=0; i<MAX_PROC; i++) |
lev->tb[i] = NIL; |
lev->U = 0; |
lev->Uf = 0; |
lev->cap_lev = NIL; |
lev->scheduling_level = master; |
return l; |
} |
int CBSSTAR_setbudget(LEVEL l, TIME Q, TIME T, LEVEL local_scheduler_level, int scheduler_id) |
{ |
CBSSTAR_level_des *lev = (CBSSTAR_level_des *)(level_table[l]); |
int r; |
#ifdef CBSSTAR_DEBUG |
cbsstar_printf("(CS:SetBud)"); |
#endif |
for (r = 0; r < lev->n; r++) |
if (lev->b[r].Q == 0) break; |
if (r != lev->n) { |
bandwidth_t b; |
b = (MAX_BANDWIDTH / T) * Q; |
/* really update lev->U, checking an overflow... */ |
if (Q< T && MAX_BANDWIDTH - lev->U > b) { |
lev->U += b; |
lev->Uf += b; |
lev->freebudgets++; |
lev->b[r].Q = Q; |
lev->b[r].T = T; |
lev->b[r].avail = Q; |
lev->b[r].flags = CBSSTAR_ACTIVE; |
lev->b[r].loc_sched_id = scheduler_id; |
lev->b[r].loc_sched_level = local_scheduler_level; |
return r; |
} |
else |
return -2; |
} |
else |
return -1; |
} |
int CBSSTAR_removebudget(LEVEL l, int budget) |
{ |
CBSSTAR_level_des *lev = (CBSSTAR_level_des *)(level_table[l]); |
bandwidth_t b; |
b = (MAX_BANDWIDTH / lev->b[budget].T) * lev->b[budget].Q; |
lev->U -= b; |
lev->b[budget].Q = 0; |
lev->b[budget].T = 0; |
NULL_TIMESPEC(&lev->b[budget].dline); |
lev->b[budget].dline_timer = NIL; |
lev->b[budget].avail = 0; |
lev->b[budget].current = -1; |
lev->b[budget].flags = CBSSTAR_ACTIVE; |
return 0; |
} |
int CBSSTAR_adjust_budget(LEVEL l, TIME Q, TIME T, int budget) |
{ |
CBSSTAR_level_des *lev = (CBSSTAR_level_des *)(level_table[l]); |
lev->b[budget].Q = Q; |
lev->b[budget].T = T; |
return 0; |
} |
int CBSSTAR_getbudgetinfo(LEVEL l, TIME *Q, TIME *T, int budget) |
{ |
CBSSTAR_level_des *lev = (CBSSTAR_level_des *)(level_table[l]); |
*Q = lev->b[budget].Q; |
*T = lev->b[budget].T; |
return 0; |
} |
int CBSSTAR_is_active(LEVEL l, int budget) |
{ |
CBSSTAR_level_des *lev = (CBSSTAR_level_des *)(level_table[l]); |
return lev->b[budget].flags; |
} |
int CBSSTAR_get_local_scheduler_level_from_budget(LEVEL l, int budget) |
{ |
CBSSTAR_level_des *lev = (CBSSTAR_level_des *)(level_table[l]); |
return lev->b[budget].loc_sched_level; |
} |
int CBSSTAR_get_local_scheduler_level_from_pid(LEVEL l, PID p) |
{ |
CBSSTAR_level_des *lev = (CBSSTAR_level_des *)(level_table[l]); |
return lev->b[lev->tb[p]].loc_sched_level; |
} |
int CBSSTAR_get_local_scheduler_id_from_budget(LEVEL l, int budget) |
{ |
CBSSTAR_level_des *lev = (CBSSTAR_level_des *)(level_table[l]); |
return lev->b[budget].loc_sched_id; |
} |
int CBSSTAR_get_local_scheduler_id_from_pid(LEVEL l, PID p) |
{ |
CBSSTAR_level_des *lev = (CBSSTAR_level_des *)(level_table[l]); |
return lev->b[lev->tb[p]].loc_sched_id; |
} |
/shark/trunk/ports/first/modules/posixstar.c |
---|
44,8 → 44,7 |
#include <kernel/func.h> |
#include <kernel/trace.h> |
#include "posixstar.h" |
#include "cbsstar.h" |
#include "comm_message.h" |
#include "fsf_server.h" |
//#define POSIXSTAR_DEBUG |
237,38 → 236,6 |
} |
static int POSIXSTAR_private_change_level(LEVEL l, PID p) |
{ |
POSIXSTAR_level_des *lev = (POSIXSTAR_level_des *)(level_table[l]); |
/* Change task level */ |
if (lev->flag[p] & POSIXSTAR_CHANGE_LEVEL) { |
STD_command_message msg; |
proc_table[p].status = SLEEP; |
level_table[lev->scheduling_level]->private_extract(lev->scheduling_level,p); |
iq_extract(p,&lev->ready[lev->priority[p]]); |
POSIXSTAR_private_scheduler(lev); |
lev->nact[p] = 0; |
lev->budget[p] = -1; |
proc_table[p].task_level = lev->new_level[p]; |
msg.command = STD_ACTIVATE_TASK; |
level_table[lev->new_level[p]] -> public_message(lev->new_level[p],p,&msg); |
return 1; |
} |
return 0; |
} |
static void POSIXSTAR_public_epilogue(LEVEL l, PID p) |
{ |
POSIXSTAR_level_des *lev = (POSIXSTAR_level_des *)(level_table[l]); |
277,8 → 244,6 |
kern_printf("(PS:Epi:%d)",p); |
#endif |
if (POSIXSTAR_private_change_level(l,p)) return; |
if (p==lev->activated) { |
if (lev->yielding) { |
lev->yielding = 0; |
388,8 → 353,6 |
static int POSIXSTAR_public_message(LEVEL l, PID p, void *m) |
{ |
POSIXSTAR_level_des *lev = (POSIXSTAR_level_des *)(level_table[l]); |
STD_command_message *msg; |
NRT_TASK_MODEL *nrt; |
#ifdef POSIXSTAR_DEBUG |
kern_printf("(PS:Msg:%d)",p); |
400,8 → 363,6 |
/* Task EndCycle */ |
case (long)(NULL): |
if (POSIXSTAR_private_change_level(l,p)) return 0; |
if (lev->nact[p] > 0) { |
/* continue!!!! */ |
lev->nact[p]--; |
427,56 → 388,8 |
default: |
msg = (STD_command_message *)m; |
switch(msg->command) { |
case STD_SET_NEW_LEVEL: |
break; |
lev->flag[p] |= POSIXSTAR_CHANGE_LEVEL; |
lev->new_level[p] = (int)(msg->param); |
break; |
case STD_SET_NEW_MODEL: |
nrt = (NRT_TASK_MODEL *)(msg->param); |
lev->priority[p] = nrt->weight; |
if (nrt->slice) { |
lev->new_slice[p] = nrt->slice; |
} else { |
lev->new_slice[p] = 0; |
} |
if (nrt->policy == NRT_RR_POLICY) |
lev->new_control[p] |= CONTROL_CAP; |
if (nrt->arrivals == SAVE_ARRIVALS) |
lev->nact[p] = 0; |
else |
lev->nact[p] = -1; |
lev->flag[p] = 0; |
break; |
case STD_ACTIVATE_TASK: |
if (lev->new_slice[p]) { |
proc_table[p].avail_time = lev->new_slice[p]; |
proc_table[p].wcet = lev->new_slice[p]; |
} else { |
proc_table[p].avail_time = lev->slice; |
proc_table[p].wcet = lev->slice; |
} |
proc_table[p].control |= lev->new_control[p]; |
POSIXSTAR_public_activate(l,p); |
break; |
} |
} |
return 0; |
/shark/trunk/ports/first/first-server.c |
---|
12,12 → 12,7 |
//===================================================================== |
#include "fsf_contract.h" |
#include "cbsstar.h" |
#include "posixstar.h" |
#include "rmstar.h" |
#include "edfstar.h" |
#include "posix.h" |
#include "comm_message.h" |
#include "fsf_server.h" |
#include <pthread.h> |
#include <stdlib.h> |
24,16 → 19,14 |
//#define FSF_DEBUG |
int fsf_cbsstar_level; |
int fsf_posix_level; |
int fsf_server_level; |
int FSF_register_module(int posix_level, int cbsstar_level) |
int FSF_register_module(int server_level) |
{ |
printk("FSF Module\n"); |
fsf_posix_level = posix_level; |
fsf_cbsstar_level = cbsstar_level; |
fsf_server_level = server_level; |
return 0; |
42,7 → 35,7 |
/* Convert the contract specification to |
* budget parameters |
*/ |
int set_CBSSTAR_budget_from_contract |
int set_SERVER_budget_from_contract |
(const fsf_contract_parameters_t *contract, |
int *budget) |
{ |
51,17 → 44,17 |
switch (contract->local_scheduler_id) { |
case FSF_SCHEDULER_POSIX: |
local_scheduler_level = POSIXSTAR_register_level(fsf_cbsstar_level,5000,32); |
local_scheduler_level = POSIXSTAR_register_level(fsf_server_level,5000,32); |
break; |
case FSF_SCHEDULER_EDF: |
local_scheduler_level = EDFSTAR_register_level(fsf_cbsstar_level); |
local_scheduler_level = EDFSTAR_register_level(fsf_server_level); |
break; |
case FSF_SCHEDULER_RM: |
local_scheduler_level = RMSTAR_register_level(fsf_cbsstar_level); |
local_scheduler_level = RMSTAR_register_level(fsf_server_level); |
break; |
} |
*budget = CBSSTAR_setbudget(fsf_cbsstar_level, |
*budget = SERVER_setbudget(fsf_server_level, |
TIMESPEC2USEC(&(contract->budget_min)), |
TIMESPEC2USEC(&(contract->period_max)), |
local_scheduler_level,contract->local_scheduler_id); |
70,15 → 63,15 |
} |
int adjust_CBSSTAR_budget_from_contract |
int adjust_SERVER_budget_from_contract |
(const fsf_contract_parameters_t *contract, |
int budget) |
{ |
CBSSTAR_adjust_budget(fsf_cbsstar_level, |
TIMESPEC2USEC(&(contract->budget_min)), |
TIMESPEC2USEC(&(contract->period_max)), |
budget); |
SERVER_adjust_budget(fsf_server_level, |
TIMESPEC2USEC(&(contract->budget_min)), |
TIMESPEC2USEC(&(contract->period_max)), |
budget); |
return 0; |
121,8 → 114,8 |
if (add_contract(contract)) |
return FSF_ERR_CONTRACT_REJECTED; |
/* SERVER = BUDGET */ |
set_CBSSTAR_budget_from_contract(contract,server); |
/* SERVER => BUDGET */ |
set_SERVER_budget_from_contract(contract,server); |
#ifdef FSF_DEBUG |
kern_printf("(New Server %d)",*server); |
137,107 → 130,58 |
} |
int fsf_bind_thread_to_server |
(fsf_server_id_t server, |
pthread_t thread, |
void *rt_arg) |
int fsf_create_thread |
(fsf_server_id_t server, |
pthread_t *thread, |
pthread_attr_t *attr, |
fsf_thread_code_t thread_code, |
void *arg, |
void *local_scheduler_arg) |
{ |
STD_command_message *msg; |
NRT_TASK_MODEL nrt; |
int local_scheduler_level,scheduler_id; |
/* Move thread from the posix module to local scheduler */ |
#ifdef FSF_DEBUG |
kern_printf("(Bind thread = %d to Server = %d)",thread,server); |
kern_printf("(FSF:Insert thread = %d to Server = %d)",thread,server); |
#endif |
/* Check if server and thread exsist */ |
if (server == -1 || thread == -1) |
return FSF_ERR_BIND_THREAD; |
if (server == NIL) |
return FSF_ERR_INVALID_SERVER; |
local_scheduler_level = CBSSTAR_get_local_scheduler_level_from_budget(fsf_cbsstar_level,server); |
scheduler_id = CBSSTAR_get_local_scheduler_id_from_budget(fsf_cbsstar_level,server); |
local_scheduler_level = SERVER_get_local_scheduler_level_from_budget(fsf_server_level,server); |
scheduler_id = SERVER_get_local_scheduler_id_from_budget(fsf_server_level,server); |
/* Check if thread is already bind */ |
switch (scheduler_id) { |
case FSF_SCHEDULER_POSIX: |
if (POSIXSTAR_getbudget(local_scheduler_level,thread) != -1) |
return FSF_ERR_BIND_THREAD; |
/* Set server on local scheduler */ |
POSIXSTAR_setbudget(local_scheduler_level,thread,(int)(server)); |
nrt_task_default_model(nrt); |
nrt_task_def_save_arrivals(nrt); |
nrt_task_def_arg(nrt,arg); |
nrt_task_def_ctrl_jet(nrt); |
nrt_task_def_level(nrt,local_scheduler_level); |
/* Send change level command to posix level */ |
msg = (STD_command_message *)malloc(sizeof(STD_command_message)); |
*thread = task_create("POSIXSTAR", thread_code, &nrt, NULL); |
if (*thread == NIL) |
return FSF_ERR_CREATE_THREAD; |
#ifdef FSF_DEBUG |
kern_printf("(MSG POSIXSTAR LEV %d SER %d THR %d)",local_scheduler_level,server,thread); |
#endif |
POSIXSTAR_setbudget(local_scheduler_level, *thread, (int)(server)); |
msg->command = STD_SET_NEW_MODEL; |
msg->param = (void *)(rt_arg); |
level_table[local_scheduler_level]->public_message(local_scheduler_level,thread,msg); |
task_activate(*thread); |
msg->command = STD_SET_NEW_LEVEL; |
msg->param = (void *)(local_scheduler_level); |
task_message(msg,thread,0); |
free(msg); |
break; |
case FSF_SCHEDULER_EDF: |
if (EDFSTAR_getbudget(local_scheduler_level,thread) != -1) |
return FSF_ERR_BIND_THREAD; |
/* Set server on local scheduler */ |
EDFSTAR_setbudget(local_scheduler_level,thread,(int)(server)); |
/* Send change level command to posix level */ |
msg = (STD_command_message *)malloc(sizeof(STD_command_message)); |
#ifdef FSF_DEBUG |
kern_printf("(MSG EDFSTAR LEV %d SEV %d THR %d)",local_scheduler_level,server,thread); |
#endif |
msg->command = STD_SET_NEW_MODEL; |
msg->param = (void *)(rt_arg); |
level_table[local_scheduler_level]->public_message(local_scheduler_level,thread,msg); |
msg->command = STD_SET_NEW_LEVEL; |
msg->param = (void *)(local_scheduler_level); |
task_message(msg,thread,0); |
free(msg); |
break; |
case FSF_SCHEDULER_RM: |
if (RMSTAR_getbudget(local_scheduler_level,thread) != -1) |
return FSF_ERR_BIND_THREAD; |
/* Set server on local scheduler */ |
RMSTAR_setbudget(local_scheduler_level,thread,(int)(server)); |
/* Send change level command to posix level */ |
msg = (STD_command_message *)malloc(sizeof(STD_command_message)); |
#ifdef FSF_DEBUG |
kern_printf("(MSG RMSTAR LEV %d SEV %d THR %d)",local_scheduler_level,server,thread); |
#endif |
msg->command = STD_SET_NEW_MODEL; |
msg->param = (void *)(rt_arg); |
level_table[local_scheduler_level]->public_message(local_scheduler_level,thread,msg); |
msg->command = STD_SET_NEW_LEVEL; |
msg->param = (void *)(local_scheduler_level); |
task_message(msg,thread,0); |
default: |
return FSF_ERR_BIND_THREAD; |
return FSF_ERR_INVALID_SERVER; |
break; |
} |
245,164 → 189,6 |
} |
int fsf_unbind_thread_from_server |
(pthread_t thread) |
{ |
int local_scheduler_level, scheduler_id; |
/* Move thread from the local scheduler module to posix level */ |
#ifdef FSF_DEBUG |
kern_printf("(UnBind thread = %d)",thread); |
#endif |
/* Check if thread exsists */ |
if (thread == -1) |
return FSF_ERR_UNBIND_THREAD; |
local_scheduler_level = CBSSTAR_get_local_scheduler_level_from_pid(fsf_cbsstar_level,thread); |
scheduler_id = CBSSTAR_get_local_scheduler_id_from_pid(fsf_cbsstar_level,thread); |
switch (scheduler_id) { |
case FSF_SCHEDULER_POSIX: |
/* Check if it is bind to a server */ |
if (POSIXSTAR_getbudget(local_scheduler_level,thread) == -1) |
return FSF_ERR_UNBIND_THREAD; |
else { |
STD_command_message *msg; |
NRT_TASK_MODEL nrt; |
nrt_task_default_model(nrt); |
nrt_task_def_save_arrivals(nrt); |
/* Send change level command to local scheduler */ |
msg = (STD_command_message *)malloc(sizeof(STD_command_message)); |
msg->command = STD_SET_NEW_MODEL; |
msg->param = (void *)(&nrt); |
level_table[fsf_posix_level]->public_message(fsf_posix_level,thread,msg); |
msg->command = STD_SET_NEW_LEVEL; |
msg->param = (void *)(fsf_posix_level); |
task_message(msg,thread,0); |
free(msg); |
} |
break; |
case FSF_SCHEDULER_EDF: |
if (EDFSTAR_getbudget(local_scheduler_level,thread) == -1) |
return FSF_ERR_UNBIND_THREAD; |
else { |
STD_command_message *msg; |
NRT_TASK_MODEL nrt; |
nrt_task_default_model(nrt); |
nrt_task_def_save_arrivals(nrt); |
/* Send change level command to local scheduler */ |
msg = (STD_command_message *)malloc(sizeof(STD_command_message)); |
msg->command = STD_SET_NEW_MODEL; |
msg->param = (void *)(&nrt); |
level_table[fsf_posix_level]->public_message(fsf_posix_level,thread,msg); |
msg->command = STD_SET_NEW_LEVEL; |
msg->param = (void *)(fsf_posix_level); |
task_message(msg,thread,0); |
free(msg); |
} |
break; |
case FSF_SCHEDULER_RM: |
if (RMSTAR_getbudget(local_scheduler_level,thread) == -1) |
return FSF_ERR_UNBIND_THREAD; |
else { |
STD_command_message *msg; |
NRT_TASK_MODEL nrt; |
nrt_task_default_model(nrt); |
nrt_task_def_save_arrivals(nrt); |
/* Send change level command to local scheduler */ |
msg = (STD_command_message *)malloc(sizeof(STD_command_message)); |
msg->command = STD_SET_NEW_MODEL; |
msg->param = (void *)(&nrt); |
level_table[fsf_posix_level]->public_message(fsf_posix_level,thread,msg); |
msg->command = STD_SET_NEW_LEVEL; |
msg->param = (void *)(fsf_posix_level); |
task_message(msg,thread,0); |
free(msg); |
} |
break; |
} |
return 0; |
} |
int fsf_negotiate_contract_for_new_thread |
(const fsf_contract_parameters_t *contract, |
fsf_server_id_t *server, |
pthread_t *thread, |
pthread_attr_t *attr, |
fsf_thread_code_t thread_code, |
void *arg, |
void *rt_arg) |
{ |
int error; |
/* Create server */ |
error = fsf_negotiate_contract(contract, server); |
if (error) return error; |
/* Create pthread */ |
if (pthread_create(thread, attr, thread_code, arg)) |
return FSF_ERR_CREATE_THREAD; |
/* Bind thread to server */ |
error = fsf_bind_thread_to_server(*server, *thread, rt_arg); |
if (error) return error; |
return 0; |
} |
int fsf_negotiate_contract_for_myself |
(const fsf_contract_parameters_t *contract, |
fsf_server_id_t *server, |
void *rt_arg) |
{ |
int error; |
/* Create server */ |
error = fsf_negotiate_contract(contract, server); |
if (error) return error; |
/* Bind current thread to server */ |
error = fsf_bind_thread_to_server(*server, exec_shadow, rt_arg); |
if (error) return error; |
return 0; |
} |
int fsf_get_server |
(fsf_server_id_t *server, |
pthread_t thread) |
409,8 → 195,8 |
{ |
int local_scheduler_level, scheduler_id; |
local_scheduler_level = CBSSTAR_get_local_scheduler_level_from_pid(fsf_cbsstar_level,thread); |
scheduler_id = CBSSTAR_get_local_scheduler_id_from_pid(fsf_cbsstar_level, thread); |
local_scheduler_level = SERVER_get_local_scheduler_level_from_pid(fsf_server_level,thread); |
scheduler_id = SERVER_get_local_scheduler_id_from_pid(fsf_server_level, thread); |
switch (scheduler_id) { |
case FSF_SCHEDULER_POSIX: |
441,8 → 227,8 |
if (*server < 0) |
return FSF_ERR_INVALID_SERVER; |
local_scheduler_level = CBSSTAR_get_local_scheduler_level_from_budget(fsf_cbsstar_level,*server); |
scheduler_id = CBSSTAR_get_local_scheduler_id_from_budget(fsf_cbsstar_level,*server); |
local_scheduler_level = SERVER_get_local_scheduler_level_from_budget(fsf_server_level,*server); |
scheduler_id = SERVER_get_local_scheduler_id_from_budget(fsf_server_level,*server); |
switch (scheduler_id) { |
case FSF_SCHEDULER_POSIX: |
466,7 → 252,7 |
break; |
} |
CBSSTAR_removebudget(fsf_cbsstar_level,*server); |
SERVER_removebudget(fsf_server_level,*server); |
level_free_descriptor(local_scheduler_level); |
493,6 → 279,7 |
if (server < 0) |
return FSF_ERR_INVALID_SERVER; |
return adjust_CBSSTAR_budget_from_contract(new_contract,server); |
return adjust_SERVER_budget_from_contract(new_contract,server); |
} |
/shark/trunk/ports/first/makefile |
---|
11,7 → 11,7 |
OBJS_PATH = $(BASE)/ports/first |
FIRST = first-contract.o first-server.o first-sync.o \ |
./modules/cbsstar.o ./modules/posixstar.o ./modules/posix.o \ |
./modules/cbsstar.o ./modules/posixstar.o \ |
./modules/edfstar.o ./modules/rmstar.o |
OBJS = $(FIRST) |