WebSVN - shark - Blame - Rev 880 - /shark/trunk/ports/first/first-server.c

Rev	Author	Line No.	Line
221	giacomo	1	//=====================================================================
		2	// FFFFFFIII RRRRR SSTTTTTTT
		3	// FF IIR RR SS
		4	// FF IR SS
		5	// FFFFFF RRRR SSSSST
		6	// FF FI RRR SS
		7	// FF II RRR SS
		8	// FF IIIIIR RS
		9	//
		10	// Basic FSF(FIRST Scheduling Framework) contract management
		11	// S.Ha.R.K. Implementation
		12	//=====================================================================
		13
405	trimarchi	14	#include "ll/i386/64bit.h"
679	trimarchi	15	#include <kernel/kern.h>
		16	#include <modules/sem.h>
		17	#include <modules/hartport.h>
		18	#include <modules/cabs.h>
405	trimarchi	19
868	trimarchi	20	#include "fsf_basic_types.h"
		21	#include "fsf_configuration_parameters.h"
		22	#include "fsf_core.h"
241	giacomo	23	#include "fsf_server.h"
679	trimarchi	24	#include "fsf_service_task.h"
868	trimarchi	25	#include "fsf_hierarchical.h"
679	trimarchi	26	#include "message.h"
221	giacomo	27
868	trimarchi	28	#include "posixstar.h"
		29	#include "edfstar.h"
		30	#include "nonestar.h"
		31	#include "rmstar.h"
		32
221	giacomo	33	#include <pthread.h>
		34	#include <stdlib.h>
808	trimarchi	35	#include "pistar.h"
868	trimarchi	36	#include <modules/comm_message.h>
221	giacomo	37
417	giacomo	38	//#define FSF_DEBUG
221	giacomo	39
410	trimarchi	40	int current_server=0;
407	giacomo	41	server_elem server_list[FSF_MAX_N_SERVERS];
406	giacomo	42	bandwidth_t fsf_max_bw = 0;
405	trimarchi	43
241	giacomo	44	int fsf_server_level;
868	trimarchi	45	int fsf_posix_level = -1;
808	trimarchi	46	int shared_object_level;
679	trimarchi	47	PID server_task;
868	trimarchi	48	fsf_contract_parameters_t contract;
221	giacomo	49
868	trimarchi	50
679	trimarchi	51	PORT channel[2];
		52
868	trimarchi	53	fsf_server_id_t service_server = -1;
		54	fsf_contract_parameters_t service_contract;
		55
808	trimarchi	56	int FSF_register_shared_object_module(void) {
811	trimarchi	57	fsf_register_shared_object();
808	trimarchi	58	return PISTAR_register_module();
		59	}
		60
		61
810	trimarchi	62	int FSF_get_shared_object_level() {
		63	return shared_object_level;
		64	}
		65
868	trimarchi	66	int FSF_register_module(int posix_level, int server_level, bandwidth_t max_bw)
224	giacomo	67	{
		68	printk("FSF Module\n");
410	trimarchi	69	current_server=0;
241	giacomo	70	fsf_server_level = server_level;
868	trimarchi	71	fsf_posix_level = posix_level;
406	giacomo	72	fsf_max_bw = max_bw;
811	trimarchi	73	shared_object_level = FSF_register_shared_object_module();
679	trimarchi	74
224	giacomo	75	return 0;
		76
		77	}
		78
868	trimarchi	79	void FSF_start_service_task(void) {
679	trimarchi	80
868	trimarchi	81	int err;
		82	struct timespec default_period = {0,50000000};
		83	struct timespec default_budget = {0,1000000};
		84	DUMMY_TASK_MODEL m;
		85
		86	dummy_task_default_model(m);
		87
679	trimarchi	88	// create the service task
		89	// create the communication channel for negotiation and renegotiation
		90
		91	channel[1] = port_create("CHANW",sizeof(struct mess),1,STREAM,WRITE);
		92
		93	channel[0] = port_create("CHANR",sizeof(struct mess),1,STREAM,READ);
		94
868	trimarchi	95	fsf_initialize_contract(&service_contract);
		96
		97	fsf_set_contract_basic_parameters(&service_contract,&default_budget,&default_period,FSF_DEFAULT_WORKLOAD);
		98	negotiate_contract(&service_contract,&service_server);
		99
		100	//server_task = task_create("stask",service_task,model,NULL);
		101	err = fsf_create_thread(service_server,&server_task,NULL,service_task,NULL,&m);
		102	if (err) {
679	trimarchi	103	cprintf("error creating service task\n");
		104	sys_shutdown_message("Could not create service_task");
		105	sys_end();
		106	return;
		107	}
		108
		109	task_activate(server_task);
		110
		111	}
		112
		113
221	giacomo	114	/* Convert the contract specification to
		115	* budget parameters
		116	*/
241	giacomo	117	int set_SERVER_budget_from_contract
221	giacomo	118	(const fsf_contract_parameters_t *contract,
		119	int *budget)
		120	{
		121
		122	int local_scheduler_level = 0;
		123
868	trimarchi	124	switch (contract->policy) {
		125	case FSF_POSIX:
241	giacomo	126	local_scheduler_level = POSIXSTAR_register_level(fsf_server_level,5000,32);
221	giacomo	127	break;
868	trimarchi	128	case FSF_EDF:
241	giacomo	129	local_scheduler_level = EDFSTAR_register_level(fsf_server_level);
221	giacomo	130	break;
868	trimarchi	131	case FSF_RM:
241	giacomo	132	local_scheduler_level = RMSTAR_register_level(fsf_server_level);
221	giacomo	133	break;
868	trimarchi	134	case FSF_NONE:
855	trimarchi	135	local_scheduler_level = NONESTAR_register_level(fsf_server_level);
334	giacomo	136	break;
221	giacomo	137	}
405	trimarchi	138
661	giacomo	139	if (contract->d_equals_t == TRUE) {
241	giacomo	140	*budget = SERVER_setbudget(fsf_server_level,
221	giacomo	141	TIMESPEC2USEC(&(contract->budget_min)),
		142	TIMESPEC2USEC(&(contract->period_max)),
661	giacomo	143	TIMESPEC2USEC(&(contract->period_max)),
868	trimarchi	144	local_scheduler_level,contract->policy);
661	giacomo	145	} else {
		146	*budget = SERVER_setbudget(fsf_server_level,
		147	TIMESPEC2USEC(&(contract->budget_min)),
		148	TIMESPEC2USEC(&(contract->period_max)),
		149	TIMESPEC2USEC(&(contract->deadline)),
868	trimarchi	150	local_scheduler_level,contract->policy);
661	giacomo	151	}
221	giacomo	152
		153	return 0;
		154
		155	}
		156
405	trimarchi	157	int adjust_SERVER_budget
		158	(int budget, const TIME budget_actual,
661	giacomo	159	const TIME period_actual, const TIME dline_actual)
221	giacomo	160	{
		161
241	giacomo	162	SERVER_adjust_budget(fsf_server_level,
405	trimarchi	163	budget_actual,
		164	period_actual,
661	giacomo	165	dline_actual,
241	giacomo	166	budget);
221	giacomo	167
		168	return 0;
		169
		170	}
		171
		172	/* Admission Test function */
		173	int add_contract(const fsf_contract_parameters_t *contract)
		174	{
		175	return 0;
		176
		177	}
		178
687	trimarchi	179	void contract_to_server(const fsf_contract_parameters_t *contract, int i) {
		180
410	trimarchi	181	TIME T,Q;
		182	#ifdef FSF_DEBUG
		183	int temp;
		184	#endif
		185
		186	T=TIMESPEC2USEC(&contract->period_min);
		187	Q=TIMESPEC2USEC(&contract->budget_max);
		188	mul32div32to32(MAX_BANDWIDTH,Q,T,server_list[current_server].Umax);
		189
417	giacomo	190	T=TIMESPEC2USEC(&contract->period_min);
		191	server_list[i].Tmin=T;
		192
410	trimarchi	193	T=TIMESPEC2USEC(&contract->period_max);
		194	server_list[i].Tmax=T;
417	giacomo	195
410	trimarchi	196	Q=TIMESPEC2USEC(&contract->budget_min);
		197	server_list[i].Cmin=Q;
		198
		199	mul32div32to32(MAX_BANDWIDTH,Q,T,server_list[i].Umin);
416	trimarchi	200	server_list[i].U=server_list[i].Umin;
661	giacomo	201
		202	if (contract->d_equals_t == TRUE) {
		203	server_list[i].deadline = 0;
		204	server_list[i].d_equals_t = TRUE;
		205	} else {
		206	server_list[i].deadline = TIMESPEC2USEC(&contract->deadline);;
		207	server_list[i].d_equals_t = FALSE;
		208	}
		209
843	trimarchi	210	server_list[i].Qs = contract->quality;
		211	server_list[i].Is = contract->importance;
		212
410	trimarchi	213	#ifdef FSF_DEBUG
		214	mul32div32to32(server_list[i].Umax,100, MAX_BANDWIDTH, temp);
		215	kern_printf("(Umax %d)",temp);
		216	mul32div32to32(server_list[i].Umin,100, MAX_BANDWIDTH, temp);
		217	kern_printf("(Umin %d)",temp);
		218	#endif
		219
687	trimarchi	220	}
		221
		222	int relink_contract_to_server(const fsf_contract_parameters_t *contract,
		223	fsf_server_id_t server)
		224	{
		225	int i=0;
		226	#ifdef FSF_DEBUG
		227	kern_printf("(Relink Server %d)",server);
		228	#endif
		229	// find contract
		230	while(i<current_server) {
		231	if (server_list[i].server==server) break;
		232	i++;
		233	}
		234
		235	server_list[i].server=server;
843	trimarchi	236	// server_list[i].Qs=1;
687	trimarchi	237
		238	contract_to_server(contract, i);
		239
		240
410	trimarchi	241	return 0;
		242
		243	}
		244
221	giacomo	245	int link_contract_to_server(const fsf_contract_parameters_t *contract,
		246	fsf_server_id_t server)
		247	{
407	giacomo	248	#ifdef FSF_DEBUG
405	trimarchi	249	kern_printf("(Link Server %d)",server);
		250	#endif
		251
410	trimarchi	252	server_list[current_server].server=server;
843	trimarchi	253	//server_list[current_server].Qs=1;
405	trimarchi	254
687	trimarchi	255	contract_to_server(contract,current_server);
405	trimarchi	256
410	trimarchi	257	current_server++;
221	giacomo	258	return 0;
		259
		260	}
		261
		262	int remove_contract(fsf_server_id_t server)
		263	{
405	trimarchi	264	int i=0;
		265	// find the contract
410	trimarchi	266	while(i<current_server) {
405	trimarchi	267	if (server_list[i].server==server) break;
		268	i++;
		269	}
221	giacomo	270
405	trimarchi	271	// compress the array;
410	trimarchi	272	while (i<(current_server-1)) {
405	trimarchi	273	server_list[i].server=server_list[i+1].server;
		274	server_list[i].Umin=server_list[i+1].Umin;
416	trimarchi	275	server_list[i].U=server_list[i+1].Umin;
405	trimarchi	276	server_list[i].Umax=server_list[i+1].Umax;
		277	server_list[i].Cmin=server_list[i+1].Cmin;
417	giacomo	278	server_list[i].Tmin=server_list[i+1].Tmin;
405	trimarchi	279	server_list[i].Tmax=server_list[i+1].Tmax;
		280	server_list[i].Qs=server_list[i+1].Qs;
661	giacomo	281	server_list[i].deadline = server_list[i+1].deadline;
		282	server_list[i].d_equals_t = server_list[i+1].d_equals_t;
843	trimarchi	283	server_list[i].Is = server_list[i+1].Is;
417	giacomo	284
405	trimarchi	285	i++;
		286	}
410	trimarchi	287	current_server--;
405	trimarchi	288
		289
221	giacomo	290	return 0;
		291
		292	}
		293
868	trimarchi	294	int
		295	fsf_get_renegotiation_status
		296	(fsf_server_id_t server,
		297	fsf_renegotiation_status_t *renegotiation_status)
		298	{
221	giacomo	299
868	trimarchi	300	if (SERVER_get_renegotiation_status(fsf_server_level,server))
		301	*renegotiation_status=FSF_IN_PROGRESS;
		302	else
		303	*renegotiation_status=FSF_ADMITTED;
		304
		305	return 0;
		306
		307
		308	}
		309
		310
221	giacomo	311	int fsf_negotiate_contract
		312	(const fsf_contract_parameters_t *contract,
		313	fsf_server_id_t *server)
		314	{
880	trimarchi	315	struct mess m;
221	giacomo	316
679	trimarchi	317	// send response server is -1 if the operation fail
880	trimarchi	318	m.type=NEGOTIATE_CONTRACT;
		319	memmove(&m.contract,contract, sizeof(fsf_contract_parameters_t));
		320	//kern_printf("(SN:%d)",*server);
		321	port_send(channel[1],&m,BLOCK);
		322	//kern_printf("BR:%d)", *server);
		323	port_receive(channel[0], &m, BLOCK);
		324	//kern_printf("(EN:%d)", *server);
		325	if (m.server==-1)
679	trimarchi	326	return FSF_ERR_CONTRACT_REJECTED;
221	giacomo	327
880	trimarchi	328	*server=m.server;
679	trimarchi	329
221	giacomo	330	return 0;
		331
		332	}
		333
872	trimarchi	334	int
		335	fsf_negotiate_contract_for_new_thread
		336	(const fsf_contract_parameters_t *contract,
		337	fsf_server_id_t *server,
		338	pthread_t *thread,
		339	pthread_attr_t *attr,
		340	fsf_thread_code_t thread_code,
		341	void *arg) {
		342
		343	int err=0;
		344
		345	err = fsf_negotiate_contract(contract,server);
		346	if (!err) {
		347	err = pthread_create(thread, attr, thread_code, arg);
		348	if (!err)
		349	err = fsf_bind_thread_to_server(server,thread);
		350	} else return err;
		351
		352	return err;
		353	}
		354
		355	int
		356	fsf_negotiate_contract_for_myself
		357	(const fsf_contract_parameters_t *contract,
		358	fsf_server_id_t *server) {
		359
		360	int err=0;
		361
		362	err = fsf_negotiate_contract(contract,server);
880	trimarchi	363	//kern_printf("ENMyS:%d", *server);
872	trimarchi	364	if (!err) {
		365	err = fsf_bind_thread_to_server(*server,exec_shadow);
880	trimarchi	366	//kern_printf("EMMyE:%d:%d",*server,err);
872	trimarchi	367	} else return err;
		368
		369	return err;
		370	}
		371
868	trimarchi	372	int fsf_unbind_thread_from_server
		373	(pthread_t thread)
		374	{
		375
		376	int local_scheduler_level, scheduler_id;
		377
		378	/* Move thread from the local scheduler module to posix level */
		379
		380	#ifdef FSF_DEBUG
		381	kern_printf("(UnBind thread = %d)",thread);
		382	#endif
		383
		384	/* Check if thread exsists */
		385	if (thread == -1)
		386	return FSF_ERR_BAD_ARGUMENT;
		387
		388	local_scheduler_level = SERVER_get_local_scheduler_level_from_pid(fsf_server_level,thread);
		389	scheduler_id = SERVER_get_local_scheduler_id_from_pid(fsf_server_level,thread);
		390
		391	/* Check if thread is already bind */
		392	if (scheduler_id == FSF_NONE) {
		393	/* Check if it is bind to a server */
		394	if (NONESTAR_getbudget(local_scheduler_level,thread) == -1)
		395	return FSF_ERR_BAD_ARGUMENT;
		396	else {
		397
		398	STD_command_message *msg;
		399	NRT_TASK_MODEL nrt;
		400
		401	nrt_task_default_model(nrt);
		402	nrt_task_def_save_arrivals(nrt);
		403
		404	/* Send change level command to local scheduler */
		405	msg = (STD_command_message *)malloc(sizeof(STD_command_message));
		406
		407	msg->command = STD_SET_NEW_MODEL;
		408	msg->param = (void *)(&nrt);
		409	level_table[fsf_posix_level]->public_message(fsf_posix_level,thread,msg);
		410
		411	msg->command = STD_SET_NEW_LEVEL;
		412	msg->param = (void *)(fsf_posix_level);
		413	task_message(msg,thread,0);
		414
		415	free(msg);
		416	}
		417	}
		418
		419	return 0;
		420
		421	}
		422
873	trimarchi	423	int
		424	fsf_bind_local_thread_to_server
		425	(fsf_server_id_t server,
		426	pthread_t thread,
		427	fsf_sched_params_t *sched_params)
		428	{
868	trimarchi	429
873	trimarchi	430	STD_command_message *msg;
		431	int local_scheduler_level,scheduler_id;
		432
		433	/* Move thread from the posix module to local scheduler */
		434
		435	#ifdef FSF_DEBUG
		436	kern_printf("(Bind thread = %d to Server = %d)",thread,server);
		437	#endif
		438
		439	/* Check if server and thread exsist */
		440	if (server == -1 \|\| thread == -1)
		441	return FSF_ERR_BAD_ARGUMENT;
		442
		443	local_scheduler_level = SERVER_get_local_scheduler_level_from_budget(fsf_server_level,server);
		444	if (local_scheduler_level==-1)
		445	return FSF_ERR_UNKNOWN_APPSCHEDULED_THREAD;
		446
		447	scheduler_id = SERVER_get_local_scheduler_id_from_budget(fsf_server_level,server);
		448
		449	/* Check if thread is already bind */
		450	switch(scheduler_id) {
		451
		452	case FSF_RM:
		453	{
		454	TASK_MODEL m=(TASK_MODEL)sched_params;
		455	HARD_TASK_MODEL h=(HARD_TASK_MODEL )sched_params;
		456
		457	if (m->pclass != HARD_PCLASS)
		458	return FSF_ERR_SCHED_POLICY_NOT_COMPATIBLE;
		459
		460	h = (HARD_TASK_MODEL *)m;
		461
		462	if (!h->wcet \|\| !h->mit) return FSF_ERR_SCHED_POLICY_NOT_COMPATIBLE;
		463
		464	/* now we know that m is a valid model */
		465	if (RMSTAR_getbudget(local_scheduler_level,thread) != -1)
		466	return FSF_ERR_BAD_ARGUMENT;
		467
		468	/* Set server on local scheduler */
		469	RMSTAR_setbudget(local_scheduler_level,thread,(int)(server));
		470
		471	/* Send change level command to posix level */
		472	}
877	trimarchi	473	break;
		474
873	trimarchi	475	case FSF_EDF:
		476	{
		477	TASK_MODEL m=(TASK_MODEL)sched_params;
		478	HARD_TASK_MODEL h=(HARD_TASK_MODEL )sched_params;
		479
		480	if (m->pclass != HARD_PCLASS)
		481	return FSF_ERR_SCHED_POLICY_NOT_COMPATIBLE;
		482
		483	h = (HARD_TASK_MODEL *)m;
		484
		485	if (!h->wcet \|\| !h->mit) return FSF_ERR_SCHED_POLICY_NOT_COMPATIBLE;
		486
		487	if (EDFSTAR_getbudget(local_scheduler_level,thread) != -1)
		488	return FSF_ERR_BAD_ARGUMENT;
		489
		490	/* Set server on local scheduler */
		491	EDFSTAR_setbudget(local_scheduler_level,thread,(int)(server));
		492
		493	}
		494	break;
		495
		496	case FSF_POSIX:
		497	{
		498	TASK_MODEL m=(TASK_MODEL)sched_params;
		499
		500	if (m->pclass != NRT_PCLASS)
		501	return FSF_ERR_SCHED_POLICY_NOT_COMPATIBLE;
		502
		503	if (POSIXSTAR_getbudget(local_scheduler_level,thread) != -1)
		504	return FSF_ERR_BAD_ARGUMENT;
		505
		506	/* Set server on local scheduler */
		507	POSIXSTAR_setbudget(local_scheduler_level,thread,(int)(server));
		508	}
877	trimarchi	509	break;
873	trimarchi	510
877	trimarchi	511	default:
		512
873	trimarchi	513	return FSF_ERR_BAD_ARGUMENT;
877	trimarchi	514
873	trimarchi	515	}
		516
		517	msg = (STD_command_message *)malloc(sizeof(STD_command_message));
877	trimarchi	518	if (msg) {
		519	SYS_FLAGS f;
		520	f=kern_fsave();
873	trimarchi	521	msg->command = STD_SET_NEW_MODEL;
		522	msg->param = (void *)(sched_params);
		523	level_table[local_scheduler_level]->public_message(local_scheduler_level,thread,msg);
		524
		525	msg->command = STD_SET_NEW_LEVEL;
		526	msg->param = (void *)(local_scheduler_level);
		527	task_message(msg,thread,0);
877	trimarchi	528	kern_frestore(f);
873	trimarchi	529	free(msg);
		530	} else return FSF_ERR_INTERNAL_ERROR;
		531
		532	return 0;
		533
		534	}
		535
		536
868	trimarchi	537	int fsf_bind_thread_to_server
		538	(fsf_server_id_t server,
		539	pthread_t thread)
		540	{
		541
		542	STD_command_message *msg;
		543	int local_scheduler_level,scheduler_id;
		544
		545	/* Move thread from the posix module to local scheduler */
		546
		547	#ifdef FSF_DEBUG
880	trimarchi	548	kern_printf("(Bthr=%d to Sr=%d)",thread,server);
868	trimarchi	549	#endif
		550
		551	/* Check if server and thread exsist */
		552	if (server == -1 \|\| thread == -1)
		553	return FSF_ERR_BAD_ARGUMENT;
		554
		555	local_scheduler_level = SERVER_get_local_scheduler_level_from_budget(fsf_server_level,server);
873	trimarchi	556	if (local_scheduler_level==-1)
		557	return FSF_ERR_UNKNOWN_APPSCHEDULED_THREAD;
		558
868	trimarchi	559	scheduler_id = SERVER_get_local_scheduler_id_from_budget(fsf_server_level,server);
		560
		561	/* Check if thread is already bind */
		562	if (scheduler_id == FSF_NONE) {
		563	DUMMY_TASK_MODEL rt_arg;
		564
		565	if (NONESTAR_getbudget(local_scheduler_level,thread) != -1)
		566	return FSF_ERR_BAD_ARGUMENT;
		567
		568	/* Set server on local scheduler */
		569	NONESTAR_setbudget(local_scheduler_level,thread,(int)(server));
		570
		571	/* Send change level command to posix level */
		572	msg = (STD_command_message *)malloc(sizeof(STD_command_message));
		573
		574	msg->command = STD_SET_NEW_MODEL;
		575	msg->param = (void *)(&rt_arg);
		576	level_table[local_scheduler_level]->public_message(local_scheduler_level,thread,msg);
		577
		578	msg->command = STD_SET_NEW_LEVEL;
		579	msg->param = (void *)(local_scheduler_level);
		580	task_message(msg,thread,0);
		581	free(msg);
		582	} else return FSF_ERR_BAD_ARGUMENT;
		583
		584	return 0;
		585	}
		586
241	giacomo	587	int fsf_create_thread
		588	(fsf_server_id_t server,
		589	pthread_t *thread,
		590	pthread_attr_t *attr,
		591	fsf_thread_code_t thread_code,
		592	void *arg,
		593	void *local_scheduler_arg)
221	giacomo	594	{
		595
		596	int local_scheduler_level,scheduler_id;
		597
		598	/* Check if server and thread exsist */
241	giacomo	599	if (server == NIL)
873	trimarchi	600	return FSF_ERR_BAD_ARGUMENT;
221	giacomo	601
241	giacomo	602	local_scheduler_level = SERVER_get_local_scheduler_level_from_budget(fsf_server_level,server);
		603	scheduler_id = SERVER_get_local_scheduler_id_from_budget(fsf_server_level,server);
868	trimarchi	604	#ifdef FSF_DEBUG
		605	kern_printf("sched policy %d", scheduler_id);
		606	#endif
221	giacomo	607	/* Check if thread is already bind */
		608	switch (scheduler_id) {
873	trimarchi	609	case FSF_POSIX:
221	giacomo	610
298	giacomo	611	nrt_task_def_arg((NRT_TASK_MODEL )(local_scheduler_arg),arg);
		612	nrt_task_def_level((NRT_TASK_MODEL )(local_scheduler_arg),local_scheduler_level);
221	giacomo	613
298	giacomo	614	*thread = task_create("POSIXSTAR", thread_code, local_scheduler_arg, NULL);
267	giacomo	615	if (*thread == NIL) {
		616	#ifdef FSF_DEBUG
		617	kern_printf("(FSF:Error creating thread)");
		618	#endif
873	trimarchi	619	return FSF_ERR_INTERNAL_ERROR;
267	giacomo	620	}
221	giacomo	621
241	giacomo	622	POSIXSTAR_setbudget(local_scheduler_level, *thread, (int)(server));
234	giacomo	623
221	giacomo	624	break;
868	trimarchi	625	case FSF_EDF:
221	giacomo	626
250	giacomo	627	hard_task_def_arg((HARD_TASK_MODEL )(local_scheduler_arg),arg);
		628	hard_task_def_level((HARD_TASK_MODEL )(local_scheduler_arg),local_scheduler_level);
		629
		630	*thread = task_create("EDFSTAR", thread_code, local_scheduler_arg, NULL);
		631	if (*thread == NIL)
873	trimarchi	632	return FSF_ERR_INTERNAL_ERROR;
250	giacomo	633
		634	EDFSTAR_setbudget(local_scheduler_level, *thread, (int)(server));
		635
221	giacomo	636	break;
235	giacomo	637
868	trimarchi	638	case FSF_RM:
235	giacomo	639
273	giacomo	640	hard_task_def_arg((HARD_TASK_MODEL )(local_scheduler_arg),arg);
		641	hard_task_def_level((HARD_TASK_MODEL )(local_scheduler_arg),local_scheduler_level);
		642
		643	*thread = task_create("RMSTAR", thread_code, local_scheduler_arg, NULL);
		644	if (*thread == NIL)
873	trimarchi	645	return FSF_ERR_INTERNAL_ERROR;
273	giacomo	646
		647	RMSTAR_setbudget(local_scheduler_level, *thread, (int)(server));
		648
		649	break;
868	trimarchi	650	case FSF_NONE:
334	giacomo	651
868	trimarchi	652	//dummy_task_def_arg(( DUMMY_TASK_MODEL )(local_scheduler_arg),arg);
		653	dummy_task_def_level(( DUMMY_TASK_MODEL )(local_scheduler_arg),local_scheduler_level);
879	trimarchi	654	#ifdef FSF_DEBUG
		655	kern_printf("(None Server create task)");
		656	#endif
855	trimarchi	657	*thread = task_create("NONESTAR", thread_code, local_scheduler_arg, NULL);
334	giacomo	658	if (*thread == NIL)
873	trimarchi	659	return FSF_ERR_INTERNAL_ERROR;
334	giacomo	660
855	trimarchi	661	NONESTAR_setbudget(local_scheduler_level, *thread, (int)(server));
334	giacomo	662
		663	break;
		664
221	giacomo	665	default:
873	trimarchi	666	return FSF_ERR_INTERNAL_ERROR;
221	giacomo	667	break;
		668	}
811	trimarchi	669
		670	#ifdef FSF_DEBUG
		671	kern_printf("(FSF:Insert thread = %d to Server = %d)",*thread,server);
		672	#endif
221	giacomo	673
		674	return 0;
		675
		676	}
		677
808	trimarchi	678	int fsf_settask_nopreemptive
221	giacomo	679	(fsf_server_id_t *server,
		680	pthread_t thread)
		681	{
		682	int local_scheduler_level, scheduler_id;
		683
241	giacomo	684	local_scheduler_level = SERVER_get_local_scheduler_level_from_pid(fsf_server_level,thread);
		685	scheduler_id = SERVER_get_local_scheduler_id_from_pid(fsf_server_level, thread);
221	giacomo	686
		687	switch (scheduler_id) {
868	trimarchi	688	case FSF_POSIX:
816	trimarchi	689	POSIXSTAR_set_nopreemtive_current(local_scheduler_level);
		690	return 1;
808	trimarchi	691	break;
868	trimarchi	692	case FSF_EDF:
808	trimarchi	693	EDFSTAR_set_nopreemtive_current(local_scheduler_level);
		694	return 1;
		695	break;
868	trimarchi	696	case FSF_RM:
812	trimarchi	697	RMSTAR_set_nopreemtive_current(local_scheduler_level);
		698	return 1;
808	trimarchi	699	break;
868	trimarchi	700	case FSF_NONE:
808	trimarchi	701	break;
		702	default:
		703	return -1;
		704	}
		705	return -1;
		706	}
		707
		708
		709	int fsf_settask_preemptive
		710	(fsf_server_id_t *server,
		711	pthread_t thread)
		712	{
		713	int local_scheduler_level, scheduler_id;
		714
		715	local_scheduler_level = SERVER_get_local_scheduler_level_from_pid(fsf_server_level,thread);
		716	scheduler_id = SERVER_get_local_scheduler_id_from_pid(fsf_server_level, thread);
		717
		718	switch (scheduler_id) {
868	trimarchi	719	case FSF_POSIX:
823	trimarchi	720	POSIXSTAR_unset_nopreemtive_current(local_scheduler_level);
816	trimarchi	721	return 1;
808	trimarchi	722	break;
868	trimarchi	723	case FSF_EDF:
808	trimarchi	724	EDFSTAR_unset_nopreemtive_current(local_scheduler_level);
		725	return 1;
		726	break;
868	trimarchi	727	case FSF_RM:
812	trimarchi	728	RMSTAR_unset_nopreemtive_current(local_scheduler_level);
		729	return 1;
808	trimarchi	730	break;
868	trimarchi	731	case FSF_NONE:
808	trimarchi	732	break;
		733	default:
		734	return -1;
		735	}
		736
		737	return -1;
		738
		739	}
		740
		741
		742	int fsf_get_server
868	trimarchi	743	(pthread_t thread,
		744	fsf_server_id_t *server)
808	trimarchi	745	{
		746	int local_scheduler_level, scheduler_id;
		747
		748	local_scheduler_level = SERVER_get_local_scheduler_level_from_pid(fsf_server_level,thread);
		749	scheduler_id = SERVER_get_local_scheduler_id_from_pid(fsf_server_level, thread);
		750
		751	switch (scheduler_id) {
868	trimarchi	752	case FSF_POSIX:
829	giacomo	753	*server = POSIXSTAR_getbudget(local_scheduler_level,thread);
		754	return 0;
868	trimarchi	755	case FSF_EDF:
829	giacomo	756	*server = EDFSTAR_getbudget(local_scheduler_level,thread);
		757	return 0;
868	trimarchi	758	case FSF_RM:
829	giacomo	759	*server = RMSTAR_getbudget(local_scheduler_level,thread);
		760	return 0;
868	trimarchi	761	case FSF_NONE:
855	trimarchi	762	*server = NONESTAR_getbudget(local_scheduler_level,thread);
829	giacomo	763	return 0;
235	giacomo	764	default:
221	giacomo	765	return -1;
		766	}
		767
		768	return -1;
		769
		770	}
		771
339	giacomo	772	int fsf_get_server_level(void)
		773	{
		774
		775	return fsf_server_level;
		776
		777	}
		778
221	giacomo	779	int fsf_cancel_contract
868	trimarchi	780	(fsf_server_id_t server)
221	giacomo	781	{
		782
		783	int local_scheduler_level, scheduler_id;
411	trimarchi	784	SYS_FLAGS f;
		785	TIME T,Q;
		786	int i=0;
221	giacomo	787
		788	#ifdef FSF_DEBUG
868	trimarchi	789	kern_printf("(Remove server %d)",server);
221	giacomo	790	#endif
		791
		792	/* Check server id */
868	trimarchi	793	if (server < 0)
873	trimarchi	794	return FSF_ERR_BAD_ARGUMENT;
221	giacomo	795
868	trimarchi	796	local_scheduler_level = SERVER_get_local_scheduler_level_from_budget(fsf_server_level,server);
		797	scheduler_id = SERVER_get_local_scheduler_id_from_budget(fsf_server_level,server);
221	giacomo	798
		799	switch (scheduler_id) {
868	trimarchi	800	case FSF_POSIX:
221	giacomo	801
		802	/* Check if some thread use the server */
868	trimarchi	803	if(POSIXSTAR_budget_has_thread(local_scheduler_level,server))
873	trimarchi	804	return FSF_ERR_NOT_CONTRACTED_SERVER;
221	giacomo	805
		806	break;
868	trimarchi	807	case FSF_EDF:
235	giacomo	808	/* Check if some thread use the server */
868	trimarchi	809	if(EDFSTAR_budget_has_thread(local_scheduler_level,server))
873	trimarchi	810	return FSF_ERR_NOT_CONTRACTED_SERVER;
235	giacomo	811	break;
		812
868	trimarchi	813	case FSF_RM:
235	giacomo	814	/* Check if some thread use the server */
868	trimarchi	815	if(RMSTAR_budget_has_thread(local_scheduler_level,server))
873	trimarchi	816	return FSF_ERR_NOT_CONTRACTED_SERVER;
235	giacomo	817
221	giacomo	818	break;
334	giacomo	819
868	trimarchi	820	case FSF_NONE:
334	giacomo	821	/* Check if some thread use the server */
868	trimarchi	822	if(NONESTAR_budget_has_thread(local_scheduler_level,server))
873	trimarchi	823	return FSF_ERR_NOT_CONTRACTED_SERVER;
334	giacomo	824
		825	break;
		826
221	giacomo	827	}
		828
868	trimarchi	829	SERVER_removebudget(fsf_server_level,server);
221	giacomo	830
		831	level_free_descriptor(local_scheduler_level);
405	trimarchi	832
868	trimarchi	833	remove_contract(server);
411	trimarchi	834
		835	f=kern_fsave();
		836	if (recalculate_contract(fsf_max_bw)==-1) {
		837	kern_frestore(f);
873	trimarchi	838	return FSF_ERR_INTERNAL_ERROR;
411	trimarchi	839	}
		840	#ifdef FSF_DEBUG
		841	kern_printf("(Adjust budget)");
		842	#endif
		843	for (i=0; i<current_server; i++) {
		844	mul32div32to32(MAX_BANDWIDTH,server_list[i].Cmin,server_list[i].U,T);
417	giacomo	845	if (T > server_list[i].Tmin ) {
411	trimarchi	846	server_list[i].actual_budget = server_list[i].Cmin;
		847	server_list[i].actual_period = T;
417	giacomo	848	#ifdef FSF_DEBUG
		849	kern_printf("(1 - Q %ld T %ld)", server_list[i].actual_budget, server_list[i].actual_period);
		850	#endif
661	giacomo	851
		852	if (server_list[i].d_equals_t == TRUE)
		853	adjust_SERVER_budget(server_list[i].server,server_list[i].Cmin, T, T);
		854	else
		855	adjust_SERVER_budget(server_list[i].server,server_list[i].Cmin, T, server_list[i].deadline);
		856
411	trimarchi	857	} else {
417	giacomo	858	mul32div32to32(server_list[i].Tmin,server_list[i].U,MAX_BANDWIDTH,Q);
411	trimarchi	859	server_list[i].actual_budget = Q;
417	giacomo	860	server_list[i].actual_period = server_list[i].Tmin;
		861	#ifdef FSF_DEBUG
		862	kern_printf("(2 - Q %ld T %ld)", server_list[i].actual_budget, server_list[i].actual_period);
		863	#endif
661	giacomo	864
		865	if (server_list[i].d_equals_t == TRUE)
		866	adjust_SERVER_budget(server_list[i].server,Q, server_list[i].Tmin, server_list[i].Tmin);
		867	else
		868	adjust_SERVER_budget(server_list[i].server,Q, server_list[i].Tmin, server_list[i].deadline);
		869
411	trimarchi	870	}
416	trimarchi	871	server_list[i].U=server_list[i].Umin;
411	trimarchi	872
		873	}
221	giacomo	874
405	trimarchi	875
411	trimarchi	876	kern_frestore(f);
221	giacomo	877
		878	return 0;
411	trimarchi	879
221	giacomo	880	}
		881
405	trimarchi	882	int recalculate_contract(bandwidth_t U) {
416	trimarchi	883	bandwidth_t current_bandwidth;
418	giacomo	884	unsigned int temp_U;
416	trimarchi	885	int Qt;
405	trimarchi	886	int isok=0;
		887	int i=0;
868	trimarchi	888	int target_importance=FSF_DEFAULT_IMPORTANCE;
		889
		890	#define MAX_IMPORTANCE 5
405	trimarchi	891
407	giacomo	892	#ifdef FSF_DEBUG
		893	int temp;
		894
		895	kern_printf("(Recalculate contract)");
		896	#endif
405	trimarchi	897
		898	/* The current bandwidth is the min bandwidth */
		899	//current_bandwidth=SERVER_return_bandwidth(fsf_server_level);
		900	#ifdef FSF_DEBUG
410	trimarchi	901	kern_printf("(nserver %d)", current_server);
405	trimarchi	902	#endif
880	trimarchi	903	//kern_printf("(CS:%d)", current_server);
405	trimarchi	904	do {
		905	current_bandwidth=0;
		906	Qt=0;
410	trimarchi	907	for (i=0; i<current_server; i++) {
843	trimarchi	908	if (server_list[i].Is==target_importance
		909	&& server_list[i].U<server_list[i].Umax && server_list[i].Qs>0)
405	trimarchi	910	Qt+=server_list[i].Qs;
416	trimarchi	911	current_bandwidth+=server_list[i].U;
868	trimarchi	912	#ifdef FSF_DEBUG
843	trimarchi	913	kern_printf("(Qs %d, Qt %d, Is %d)", server_list[i].Qs, Qt,server_list[i].Is);
868	trimarchi	914	#endif
405	trimarchi	915	}
413	trimarchi	916
868	trimarchi	917	#ifdef FSF_DEBUG
405	trimarchi	918	kern_printf("(Total Quality %d)", Qt);
868	trimarchi	919	#endif
405	trimarchi	920	isok=1;
410	trimarchi	921	for (i=0; i<current_server; i++) {
843	trimarchi	922	if (server_list[i].Is==target_importance && server_list[i].U<server_list[i].Umax && server_list[i].Qs>0) {
416	trimarchi	923	temp_U=server_list[i].U;
		924	server_list[i].U=U-current_bandwidth;
		925	mul32div32to32(server_list[i].U, server_list[i].Qs, Qt, server_list[i].U);
		926	temp_U+=server_list[i].U;
		927
		928	if (temp_U<=server_list[i].Umin) {
405	trimarchi	929	server_list[i].U=server_list[i].Umin;
416	trimarchi	930	} else if (temp_U>server_list[i].Umax) {
		931	server_list[i].U=server_list[i].Umax;
405	trimarchi	932	isok=0;
		933	} else server_list[i].U=temp_U;
		934
		935	#ifdef FSF_DEBUG
		936	mul32div32to32(server_list[i].U,100, MAX_BANDWIDTH, temp);
		937	kern_printf("(Server %d bw %d)", server_list[i].server, temp);
		938	#endif
		939	}
		940	}
843	trimarchi	941	target_importance++;
880	trimarchi	942	} while (!isok \|\| target_importance<=MAX_IMPORTANCE);
		943	//kern_printf("(RNDNL)");
405	trimarchi	944	return 0;
		945	}
		946
221	giacomo	947	int fsf_renegotiate_contract
		948	(const fsf_contract_parameters_t *new_contract,
		949	fsf_server_id_t server)
		950	{
679	trimarchi	951
		952	struct mess message;
221	giacomo	953
679	trimarchi	954	// send response server is -1 if the operation fail
		955	message.type=RENEGOTIATE_CONTRACT;
		956	memmove(&message.contract,new_contract, sizeof(fsf_contract_parameters_t));
		957	message.server = server;
221	giacomo	958
859	trimarchi	959	port_send(channel[1],&message,BLOCK);
		960
		961	port_receive(channel[0], &message, BLOCK);
		962
679	trimarchi	963	if (message.server==-1) return FSF_ERR_CONTRACT_REJECTED;
		964
405	trimarchi	965	return 0;
221	giacomo	966	}
241	giacomo	967
868	trimarchi	968	int fsf_request_contract_renegotiation
		969	(const fsf_contract_parameters_t *new_contract,
		970	fsf_server_id_t server,
		971	int sig_notify,
		972	union sigval sig_value)
		973	{
		974
		975	struct mess message;
		976
		977	// send response server is -1 if the operation fail
		978	message.type=REQUEST_RENEGOTIATE_CONTRACT;
		979	memmove(&message.contract,new_contract, sizeof(fsf_contract_parameters_t));
		980	message.server = server;
		981
		982	port_send(channel[1],&message,BLOCK);
		983
		984	port_receive(channel[0], &message, BLOCK);
		985
		986	if (message.server==-1) return FSF_ERR_CONTRACT_REJECTED;
		987
		988	return 0;
		989	}
		990
407	giacomo	991	void print_server_list()
		992	{
		993
		994	int i;
		995
		996	kern_printf("Server List\n");
		997
410	trimarchi	998	for(i=0;i<current_server;i++) {
407	giacomo	999
662	giacomo	1000	kern_printf("[%d] Q:%d T:%d D:%d [DeT = %d]\n",server_list[i].server,(int)server_list[i].actual_budget,(int)server_list[i].actual_period,(int)server_list[i].deadline,(int)server_list[i].d_equals_t);
407	giacomo	1001
		1002	}
		1003
		1004	}
808	trimarchi	1005
		1006
		1007	int fsf_get_remain_budget(fsf_server_id_t server) {
		1008
825	trimarchi	1009	return SERVER_get_remain_capacity(fsf_server_level, server);
808	trimarchi	1010	}
868	trimarchi	1011
		1012	int fsf_get_budget_and_period
		1013	(fsf_server_id_t server,
		1014	struct timespec *budget,
		1015	struct timespec *period) {
		1016	TIME bg;
		1017	TIME pd;
		1018
		1019	if (!SERVER_getbudgetinfo(fsf_server_level, &bg, &pd, NULL, server)) {
		1020	if (budget) {
		1021	NULL_TIMESPEC(budget);
		1022	ADDUSEC2TIMESPEC(bg, budget);
		1023	}
		1024	if (period) {
		1025	NULL_TIMESPEC(period);
		1026	ADDUSEC2TIMESPEC(pd, period);
		1027	}
		1028
		1029	return 0;
		1030	}
		1031	return FSF_ERR_BAD_ARGUMENT;
		1032	}
		1033
		1034	int
		1035	fsf_set_service_thread_data
		1036	(const struct timespec *budget,
		1037	const struct timespec *period,
		1038	bool *accepted) {
		1039
		1040	if (budget==NULL && period==NULL) return FSF_ERR_BAD_ARGUMENT;
		1041	fsf_set_contract_basic_parameters(&service_contract,budget,period,FSF_DEFAULT_WORKLOAD);
		1042	*accepted = !fsf_renegotiate_contract(&service_contract,service_server)?true:false;
		1043	return 0;
		1044
		1045	}
		1046
		1047
		1048
		1049	int fsf_get_service_thread_data
		1050	(struct timespec *budget,
		1051	struct timespec *period) {
		1052
		1053	return fsf_get_budget_and_period(service_server, budget, period);
		1054
		1055	}
		1056

Subversion Repositories shark

(root)/shark/trunk/ports/first/first-server.c - Rev 880