WebSVN - shark - Blame - Rev 877 - /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	{
679	trimarchi	315	struct mess message;
221	giacomo	316
679	trimarchi	317	// send response server is -1 if the operation fail
		318	message.type=NEGOTIATE_CONTRACT;
		319	memmove(&message.contract,contract, sizeof(fsf_contract_parameters_t));
221	giacomo	320
681	trimarchi	321	port_send(channel[1],&message,BLOCK);
679	trimarchi	322
681	trimarchi	323	port_receive(channel[0], &message, BLOCK);
868	trimarchi	324
679	trimarchi	325	if (message.server==-1)
		326	return FSF_ERR_CONTRACT_REJECTED;
221	giacomo	327
679	trimarchi	328	*server=message.server;
		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);
		363	if (!err) {
		364	err = fsf_bind_thread_to_server(*server,exec_shadow);
		365	} else return err;
		366
		367	return err;
		368	}
		369
868	trimarchi	370	int fsf_unbind_thread_from_server
		371	(pthread_t thread)
		372	{
		373
		374	int local_scheduler_level, scheduler_id;
		375
		376	/* Move thread from the local scheduler module to posix level */
		377
		378	#ifdef FSF_DEBUG
		379	kern_printf("(UnBind thread = %d)",thread);
		380	#endif
		381
		382	/* Check if thread exsists */
		383	if (thread == -1)
		384	return FSF_ERR_BAD_ARGUMENT;
		385
		386	local_scheduler_level = SERVER_get_local_scheduler_level_from_pid(fsf_server_level,thread);
		387	scheduler_id = SERVER_get_local_scheduler_id_from_pid(fsf_server_level,thread);
		388
		389	/* Check if thread is already bind */
		390	if (scheduler_id == FSF_NONE) {
		391	/* Check if it is bind to a server */
		392	if (NONESTAR_getbudget(local_scheduler_level,thread) == -1)
		393	return FSF_ERR_BAD_ARGUMENT;
		394	else {
		395
		396	STD_command_message *msg;
		397	NRT_TASK_MODEL nrt;
		398
		399	nrt_task_default_model(nrt);
		400	nrt_task_def_save_arrivals(nrt);
		401
		402	/* Send change level command to local scheduler */
		403	msg = (STD_command_message *)malloc(sizeof(STD_command_message));
		404
		405	msg->command = STD_SET_NEW_MODEL;
		406	msg->param = (void *)(&nrt);
		407	level_table[fsf_posix_level]->public_message(fsf_posix_level,thread,msg);
		408
		409	msg->command = STD_SET_NEW_LEVEL;
		410	msg->param = (void *)(fsf_posix_level);
		411	task_message(msg,thread,0);
		412
		413	free(msg);
		414	}
		415	}
		416
		417	return 0;
		418
		419	}
		420
873	trimarchi	421	int
		422	fsf_bind_local_thread_to_server
		423	(fsf_server_id_t server,
		424	pthread_t thread,
		425	fsf_sched_params_t *sched_params)
		426	{
868	trimarchi	427
873	trimarchi	428	STD_command_message *msg;
		429	int local_scheduler_level,scheduler_id;
		430
		431	/* Move thread from the posix module to local scheduler */
		432
		433	#ifdef FSF_DEBUG
		434	kern_printf("(Bind thread = %d to Server = %d)",thread,server);
		435	#endif
		436
		437	/* Check if server and thread exsist */
		438	if (server == -1 \|\| thread == -1)
		439	return FSF_ERR_BAD_ARGUMENT;
		440
		441	local_scheduler_level = SERVER_get_local_scheduler_level_from_budget(fsf_server_level,server);
		442	if (local_scheduler_level==-1)
		443	return FSF_ERR_UNKNOWN_APPSCHEDULED_THREAD;
		444
		445	scheduler_id = SERVER_get_local_scheduler_id_from_budget(fsf_server_level,server);
		446
		447	/* Check if thread is already bind */
		448	switch(scheduler_id) {
		449
		450	case FSF_RM:
		451	{
		452	TASK_MODEL m=(TASK_MODEL)sched_params;
		453	HARD_TASK_MODEL h=(HARD_TASK_MODEL )sched_params;
		454
		455	if (m->pclass != HARD_PCLASS)
		456	return FSF_ERR_SCHED_POLICY_NOT_COMPATIBLE;
		457
		458	h = (HARD_TASK_MODEL *)m;
		459
		460	if (!h->wcet \|\| !h->mit) return FSF_ERR_SCHED_POLICY_NOT_COMPATIBLE;
		461
		462	/* now we know that m is a valid model */
		463	if (RMSTAR_getbudget(local_scheduler_level,thread) != -1)
		464	return FSF_ERR_BAD_ARGUMENT;
		465
		466	/* Set server on local scheduler */
		467	RMSTAR_setbudget(local_scheduler_level,thread,(int)(server));
		468
		469	/* Send change level command to posix level */
		470	}
877	trimarchi	471	break;
		472
873	trimarchi	473	case FSF_EDF:
		474	{
		475	TASK_MODEL m=(TASK_MODEL)sched_params;
		476	HARD_TASK_MODEL h=(HARD_TASK_MODEL )sched_params;
		477
		478	if (m->pclass != HARD_PCLASS)
		479	return FSF_ERR_SCHED_POLICY_NOT_COMPATIBLE;
		480
		481	h = (HARD_TASK_MODEL *)m;
		482
		483	if (!h->wcet \|\| !h->mit) return FSF_ERR_SCHED_POLICY_NOT_COMPATIBLE;
		484
		485	if (EDFSTAR_getbudget(local_scheduler_level,thread) != -1)
		486	return FSF_ERR_BAD_ARGUMENT;
		487
		488	/* Set server on local scheduler */
		489	EDFSTAR_setbudget(local_scheduler_level,thread,(int)(server));
		490
		491	}
		492	break;
		493
		494	case FSF_POSIX:
		495	{
		496	TASK_MODEL m=(TASK_MODEL)sched_params;
		497
		498	if (m->pclass != NRT_PCLASS)
		499	return FSF_ERR_SCHED_POLICY_NOT_COMPATIBLE;
		500
		501	if (POSIXSTAR_getbudget(local_scheduler_level,thread) != -1)
		502	return FSF_ERR_BAD_ARGUMENT;
		503
		504	/* Set server on local scheduler */
		505	POSIXSTAR_setbudget(local_scheduler_level,thread,(int)(server));
		506	}
877	trimarchi	507	break;
873	trimarchi	508
877	trimarchi	509	default:
		510
873	trimarchi	511	return FSF_ERR_BAD_ARGUMENT;
877	trimarchi	512
873	trimarchi	513	}
		514
		515	msg = (STD_command_message *)malloc(sizeof(STD_command_message));
877	trimarchi	516	if (msg) {
		517	SYS_FLAGS f;
		518	f=kern_fsave();
873	trimarchi	519	msg->command = STD_SET_NEW_MODEL;
		520	msg->param = (void *)(sched_params);
		521	level_table[local_scheduler_level]->public_message(local_scheduler_level,thread,msg);
		522
		523	msg->command = STD_SET_NEW_LEVEL;
		524	msg->param = (void *)(local_scheduler_level);
		525	task_message(msg,thread,0);
877	trimarchi	526	kern_frestore(f);
873	trimarchi	527	free(msg);
		528	} else return FSF_ERR_INTERNAL_ERROR;
		529
		530	return 0;
		531
		532	}
		533
		534
868	trimarchi	535	int fsf_bind_thread_to_server
		536	(fsf_server_id_t server,
		537	pthread_t thread)
		538	{
		539
		540	STD_command_message *msg;
		541	int local_scheduler_level,scheduler_id;
		542
		543	/* Move thread from the posix module to local scheduler */
		544
		545	#ifdef FSF_DEBUG
		546	kern_printf("(Bind thread = %d to Server = %d)",thread,server);
		547	#endif
		548
		549	/* Check if server and thread exsist */
		550	if (server == -1 \|\| thread == -1)
		551	return FSF_ERR_BAD_ARGUMENT;
		552
		553	local_scheduler_level = SERVER_get_local_scheduler_level_from_budget(fsf_server_level,server);
873	trimarchi	554	if (local_scheduler_level==-1)
		555	return FSF_ERR_UNKNOWN_APPSCHEDULED_THREAD;
		556
868	trimarchi	557	scheduler_id = SERVER_get_local_scheduler_id_from_budget(fsf_server_level,server);
		558
		559	/* Check if thread is already bind */
		560	if (scheduler_id == FSF_NONE) {
		561	DUMMY_TASK_MODEL rt_arg;
		562
		563	if (NONESTAR_getbudget(local_scheduler_level,thread) != -1)
		564	return FSF_ERR_BAD_ARGUMENT;
		565
		566	/* Set server on local scheduler */
		567	NONESTAR_setbudget(local_scheduler_level,thread,(int)(server));
		568
		569	/* Send change level command to posix level */
		570	msg = (STD_command_message *)malloc(sizeof(STD_command_message));
		571
		572	msg->command = STD_SET_NEW_MODEL;
		573	msg->param = (void *)(&rt_arg);
		574	level_table[local_scheduler_level]->public_message(local_scheduler_level,thread,msg);
		575
		576	msg->command = STD_SET_NEW_LEVEL;
		577	msg->param = (void *)(local_scheduler_level);
		578	task_message(msg,thread,0);
		579
		580	free(msg);
		581	} else return FSF_ERR_BAD_ARGUMENT;
		582
		583	return 0;
		584	}
		585
241	giacomo	586	int fsf_create_thread
		587	(fsf_server_id_t server,
		588	pthread_t *thread,
		589	pthread_attr_t *attr,
		590	fsf_thread_code_t thread_code,
		591	void *arg,
		592	void *local_scheduler_arg)
221	giacomo	593	{
		594
		595	int local_scheduler_level,scheduler_id;
		596
		597	/* Check if server and thread exsist */
241	giacomo	598	if (server == NIL)
873	trimarchi	599	return FSF_ERR_BAD_ARGUMENT;
221	giacomo	600
241	giacomo	601	local_scheduler_level = SERVER_get_local_scheduler_level_from_budget(fsf_server_level,server);
		602	scheduler_id = SERVER_get_local_scheduler_id_from_budget(fsf_server_level,server);
868	trimarchi	603	#ifdef FSF_DEBUG
		604	kern_printf("sched policy %d", scheduler_id);
		605	#endif
221	giacomo	606	/* Check if thread is already bind */
		607	switch (scheduler_id) {
873	trimarchi	608	case FSF_POSIX:
221	giacomo	609
298	giacomo	610	nrt_task_def_arg((NRT_TASK_MODEL )(local_scheduler_arg),arg);
		611	nrt_task_def_level((NRT_TASK_MODEL )(local_scheduler_arg),local_scheduler_level);
221	giacomo	612
298	giacomo	613	*thread = task_create("POSIXSTAR", thread_code, local_scheduler_arg, NULL);
267	giacomo	614	if (*thread == NIL) {
		615	#ifdef FSF_DEBUG
		616	kern_printf("(FSF:Error creating thread)");
		617	#endif
873	trimarchi	618	return FSF_ERR_INTERNAL_ERROR;
267	giacomo	619	}
221	giacomo	620
241	giacomo	621	POSIXSTAR_setbudget(local_scheduler_level, *thread, (int)(server));
234	giacomo	622
221	giacomo	623	break;
868	trimarchi	624	case FSF_EDF:
221	giacomo	625
250	giacomo	626	hard_task_def_arg((HARD_TASK_MODEL )(local_scheduler_arg),arg);
		627	hard_task_def_level((HARD_TASK_MODEL )(local_scheduler_arg),local_scheduler_level);
		628
		629	*thread = task_create("EDFSTAR", thread_code, local_scheduler_arg, NULL);
		630	if (*thread == NIL)
873	trimarchi	631	return FSF_ERR_INTERNAL_ERROR;
250	giacomo	632
		633	EDFSTAR_setbudget(local_scheduler_level, *thread, (int)(server));
		634
221	giacomo	635	break;
235	giacomo	636
868	trimarchi	637	case FSF_RM:
235	giacomo	638
273	giacomo	639	hard_task_def_arg((HARD_TASK_MODEL )(local_scheduler_arg),arg);
		640	hard_task_def_level((HARD_TASK_MODEL )(local_scheduler_arg),local_scheduler_level);
		641
		642	*thread = task_create("RMSTAR", thread_code, local_scheduler_arg, NULL);
		643	if (*thread == NIL)
873	trimarchi	644	return FSF_ERR_INTERNAL_ERROR;
273	giacomo	645
		646	RMSTAR_setbudget(local_scheduler_level, *thread, (int)(server));
		647
		648	break;
868	trimarchi	649	case FSF_NONE:
334	giacomo	650
868	trimarchi	651	//dummy_task_def_arg(( DUMMY_TASK_MODEL )(local_scheduler_arg),arg);
		652	dummy_task_def_level(( DUMMY_TASK_MODEL )(local_scheduler_arg),local_scheduler_level);
334	giacomo	653
855	trimarchi	654	*thread = task_create("NONESTAR", thread_code, local_scheduler_arg, NULL);
334	giacomo	655	if (*thread == NIL)
873	trimarchi	656	return FSF_ERR_INTERNAL_ERROR;
334	giacomo	657
855	trimarchi	658	NONESTAR_setbudget(local_scheduler_level, *thread, (int)(server));
334	giacomo	659
		660	break;
		661
221	giacomo	662	default:
873	trimarchi	663	return FSF_ERR_INTERNAL_ERROR;
221	giacomo	664	break;
		665	}
811	trimarchi	666
		667	#ifdef FSF_DEBUG
		668	kern_printf("(FSF:Insert thread = %d to Server = %d)",*thread,server);
		669	#endif
221	giacomo	670
		671	return 0;
		672
		673	}
		674
808	trimarchi	675	int fsf_settask_nopreemptive
221	giacomo	676	(fsf_server_id_t *server,
		677	pthread_t thread)
		678	{
		679	int local_scheduler_level, scheduler_id;
		680
241	giacomo	681	local_scheduler_level = SERVER_get_local_scheduler_level_from_pid(fsf_server_level,thread);
		682	scheduler_id = SERVER_get_local_scheduler_id_from_pid(fsf_server_level, thread);
221	giacomo	683
		684	switch (scheduler_id) {
868	trimarchi	685	case FSF_POSIX:
816	trimarchi	686	POSIXSTAR_set_nopreemtive_current(local_scheduler_level);
		687	return 1;
808	trimarchi	688	break;
868	trimarchi	689	case FSF_EDF:
808	trimarchi	690	EDFSTAR_set_nopreemtive_current(local_scheduler_level);
		691	return 1;
		692	break;
868	trimarchi	693	case FSF_RM:
812	trimarchi	694	RMSTAR_set_nopreemtive_current(local_scheduler_level);
		695	return 1;
808	trimarchi	696	break;
868	trimarchi	697	case FSF_NONE:
808	trimarchi	698	break;
		699	default:
		700	return -1;
		701	}
		702	return -1;
		703	}
		704
		705
		706	int fsf_settask_preemptive
		707	(fsf_server_id_t *server,
		708	pthread_t thread)
		709	{
		710	int local_scheduler_level, scheduler_id;
		711
		712	local_scheduler_level = SERVER_get_local_scheduler_level_from_pid(fsf_server_level,thread);
		713	scheduler_id = SERVER_get_local_scheduler_id_from_pid(fsf_server_level, thread);
		714
		715	switch (scheduler_id) {
868	trimarchi	716	case FSF_POSIX:
823	trimarchi	717	POSIXSTAR_unset_nopreemtive_current(local_scheduler_level);
816	trimarchi	718	return 1;
808	trimarchi	719	break;
868	trimarchi	720	case FSF_EDF:
808	trimarchi	721	EDFSTAR_unset_nopreemtive_current(local_scheduler_level);
		722	return 1;
		723	break;
868	trimarchi	724	case FSF_RM:
812	trimarchi	725	RMSTAR_unset_nopreemtive_current(local_scheduler_level);
		726	return 1;
808	trimarchi	727	break;
868	trimarchi	728	case FSF_NONE:
808	trimarchi	729	break;
		730	default:
		731	return -1;
		732	}
		733
		734	return -1;
		735
		736	}
		737
		738
		739	int fsf_get_server
868	trimarchi	740	(pthread_t thread,
		741	fsf_server_id_t *server)
808	trimarchi	742	{
		743	int local_scheduler_level, scheduler_id;
		744
		745	local_scheduler_level = SERVER_get_local_scheduler_level_from_pid(fsf_server_level,thread);
		746	scheduler_id = SERVER_get_local_scheduler_id_from_pid(fsf_server_level, thread);
		747
		748	switch (scheduler_id) {
868	trimarchi	749	case FSF_POSIX:
829	giacomo	750	*server = POSIXSTAR_getbudget(local_scheduler_level,thread);
		751	return 0;
868	trimarchi	752	case FSF_EDF:
829	giacomo	753	*server = EDFSTAR_getbudget(local_scheduler_level,thread);
		754	return 0;
868	trimarchi	755	case FSF_RM:
829	giacomo	756	*server = RMSTAR_getbudget(local_scheduler_level,thread);
		757	return 0;
868	trimarchi	758	case FSF_NONE:
855	trimarchi	759	*server = NONESTAR_getbudget(local_scheduler_level,thread);
829	giacomo	760	return 0;
235	giacomo	761	default:
221	giacomo	762	return -1;
		763	}
		764
		765	return -1;
		766
		767	}
		768
339	giacomo	769	int fsf_get_server_level(void)
		770	{
		771
		772	return fsf_server_level;
		773
		774	}
		775
221	giacomo	776	int fsf_cancel_contract
868	trimarchi	777	(fsf_server_id_t server)
221	giacomo	778	{
		779
		780	int local_scheduler_level, scheduler_id;
411	trimarchi	781	SYS_FLAGS f;
		782	TIME T,Q;
		783	int i=0;
221	giacomo	784
		785	#ifdef FSF_DEBUG
868	trimarchi	786	kern_printf("(Remove server %d)",server);
221	giacomo	787	#endif
		788
		789	/* Check server id */
868	trimarchi	790	if (server < 0)
873	trimarchi	791	return FSF_ERR_BAD_ARGUMENT;
221	giacomo	792
868	trimarchi	793	local_scheduler_level = SERVER_get_local_scheduler_level_from_budget(fsf_server_level,server);
		794	scheduler_id = SERVER_get_local_scheduler_id_from_budget(fsf_server_level,server);
221	giacomo	795
		796	switch (scheduler_id) {
868	trimarchi	797	case FSF_POSIX:
221	giacomo	798
		799	/* Check if some thread use the server */
868	trimarchi	800	if(POSIXSTAR_budget_has_thread(local_scheduler_level,server))
873	trimarchi	801	return FSF_ERR_NOT_CONTRACTED_SERVER;
221	giacomo	802
		803	break;
868	trimarchi	804	case FSF_EDF:
235	giacomo	805	/* Check if some thread use the server */
868	trimarchi	806	if(EDFSTAR_budget_has_thread(local_scheduler_level,server))
873	trimarchi	807	return FSF_ERR_NOT_CONTRACTED_SERVER;
235	giacomo	808	break;
		809
868	trimarchi	810	case FSF_RM:
235	giacomo	811	/* Check if some thread use the server */
868	trimarchi	812	if(RMSTAR_budget_has_thread(local_scheduler_level,server))
873	trimarchi	813	return FSF_ERR_NOT_CONTRACTED_SERVER;
235	giacomo	814
221	giacomo	815	break;
334	giacomo	816
868	trimarchi	817	case FSF_NONE:
334	giacomo	818	/* Check if some thread use the server */
868	trimarchi	819	if(NONESTAR_budget_has_thread(local_scheduler_level,server))
873	trimarchi	820	return FSF_ERR_NOT_CONTRACTED_SERVER;
334	giacomo	821
		822	break;
		823
221	giacomo	824	}
		825
868	trimarchi	826	SERVER_removebudget(fsf_server_level,server);
221	giacomo	827
		828	level_free_descriptor(local_scheduler_level);
405	trimarchi	829
868	trimarchi	830	remove_contract(server);
411	trimarchi	831
		832	f=kern_fsave();
		833	if (recalculate_contract(fsf_max_bw)==-1) {
		834	kern_frestore(f);
873	trimarchi	835	return FSF_ERR_INTERNAL_ERROR;
411	trimarchi	836	}
		837	#ifdef FSF_DEBUG
		838	kern_printf("(Adjust budget)");
		839	#endif
		840	for (i=0; i<current_server; i++) {
		841	mul32div32to32(MAX_BANDWIDTH,server_list[i].Cmin,server_list[i].U,T);
417	giacomo	842	if (T > server_list[i].Tmin ) {
411	trimarchi	843	server_list[i].actual_budget = server_list[i].Cmin;
		844	server_list[i].actual_period = T;
417	giacomo	845	#ifdef FSF_DEBUG
		846	kern_printf("(1 - Q %ld T %ld)", server_list[i].actual_budget, server_list[i].actual_period);
		847	#endif
661	giacomo	848
		849	if (server_list[i].d_equals_t == TRUE)
		850	adjust_SERVER_budget(server_list[i].server,server_list[i].Cmin, T, T);
		851	else
		852	adjust_SERVER_budget(server_list[i].server,server_list[i].Cmin, T, server_list[i].deadline);
		853
411	trimarchi	854	} else {
417	giacomo	855	mul32div32to32(server_list[i].Tmin,server_list[i].U,MAX_BANDWIDTH,Q);
411	trimarchi	856	server_list[i].actual_budget = Q;
417	giacomo	857	server_list[i].actual_period = server_list[i].Tmin;
		858	#ifdef FSF_DEBUG
		859	kern_printf("(2 - Q %ld T %ld)", server_list[i].actual_budget, server_list[i].actual_period);
		860	#endif
661	giacomo	861
		862	if (server_list[i].d_equals_t == TRUE)
		863	adjust_SERVER_budget(server_list[i].server,Q, server_list[i].Tmin, server_list[i].Tmin);
		864	else
		865	adjust_SERVER_budget(server_list[i].server,Q, server_list[i].Tmin, server_list[i].deadline);
		866
411	trimarchi	867	}
416	trimarchi	868	server_list[i].U=server_list[i].Umin;
411	trimarchi	869
		870	}
221	giacomo	871
405	trimarchi	872
411	trimarchi	873	kern_frestore(f);
221	giacomo	874
		875	return 0;
411	trimarchi	876
221	giacomo	877	}
		878
405	trimarchi	879	int recalculate_contract(bandwidth_t U) {
416	trimarchi	880	bandwidth_t current_bandwidth;
418	giacomo	881	unsigned int temp_U;
416	trimarchi	882	int Qt;
405	trimarchi	883	int isok=0;
		884	int i=0;
868	trimarchi	885	int target_importance=FSF_DEFAULT_IMPORTANCE;
		886
		887	#define MAX_IMPORTANCE 5
405	trimarchi	888
407	giacomo	889	#ifdef FSF_DEBUG
		890	int temp;
		891
		892	kern_printf("(Recalculate contract)");
		893	#endif
405	trimarchi	894
		895	/* The current bandwidth is the min bandwidth */
		896	//current_bandwidth=SERVER_return_bandwidth(fsf_server_level);
		897	#ifdef FSF_DEBUG
410	trimarchi	898	kern_printf("(nserver %d)", current_server);
405	trimarchi	899	#endif
		900
		901	do {
		902	current_bandwidth=0;
		903	Qt=0;
410	trimarchi	904	for (i=0; i<current_server; i++) {
843	trimarchi	905	if (server_list[i].Is==target_importance
		906	&& server_list[i].U<server_list[i].Umax && server_list[i].Qs>0)
405	trimarchi	907	Qt+=server_list[i].Qs;
416	trimarchi	908	current_bandwidth+=server_list[i].U;
868	trimarchi	909	#ifdef FSF_DEBUG
843	trimarchi	910	kern_printf("(Qs %d, Qt %d, Is %d)", server_list[i].Qs, Qt,server_list[i].Is);
868	trimarchi	911	#endif
405	trimarchi	912	}
413	trimarchi	913
868	trimarchi	914	#ifdef FSF_DEBUG
405	trimarchi	915	kern_printf("(Total Quality %d)", Qt);
868	trimarchi	916	#endif
405	trimarchi	917	isok=1;
410	trimarchi	918	for (i=0; i<current_server; i++) {
843	trimarchi	919	if (server_list[i].Is==target_importance && server_list[i].U<server_list[i].Umax && server_list[i].Qs>0) {
416	trimarchi	920	temp_U=server_list[i].U;
		921	server_list[i].U=U-current_bandwidth;
		922	mul32div32to32(server_list[i].U, server_list[i].Qs, Qt, server_list[i].U);
		923	temp_U+=server_list[i].U;
		924
		925	if (temp_U<=server_list[i].Umin) {
405	trimarchi	926	server_list[i].U=server_list[i].Umin;
416	trimarchi	927	} else if (temp_U>server_list[i].Umax) {
		928	server_list[i].U=server_list[i].Umax;
405	trimarchi	929	isok=0;
		930	} else server_list[i].U=temp_U;
		931
		932	#ifdef FSF_DEBUG
		933	mul32div32to32(server_list[i].U,100, MAX_BANDWIDTH, temp);
		934	kern_printf("(Server %d bw %d)", server_list[i].server, temp);
		935	#endif
		936	}
		937	}
843	trimarchi	938	target_importance++;
868	trimarchi	939	} while (!isok && target_importance<=MAX_IMPORTANCE);
405	trimarchi	940
		941	return 0;
		942	}
		943
221	giacomo	944	int fsf_renegotiate_contract
		945	(const fsf_contract_parameters_t *new_contract,
		946	fsf_server_id_t server)
		947	{
679	trimarchi	948
		949	struct mess message;
221	giacomo	950
679	trimarchi	951	// send response server is -1 if the operation fail
		952	message.type=RENEGOTIATE_CONTRACT;
		953	memmove(&message.contract,new_contract, sizeof(fsf_contract_parameters_t));
		954	message.server = server;
221	giacomo	955
859	trimarchi	956	port_send(channel[1],&message,BLOCK);
		957
		958	port_receive(channel[0], &message, BLOCK);
		959
679	trimarchi	960	if (message.server==-1) return FSF_ERR_CONTRACT_REJECTED;
		961
405	trimarchi	962	return 0;
221	giacomo	963	}
241	giacomo	964
868	trimarchi	965	int fsf_request_contract_renegotiation
		966	(const fsf_contract_parameters_t *new_contract,
		967	fsf_server_id_t server,
		968	int sig_notify,
		969	union sigval sig_value)
		970	{
		971
		972	struct mess message;
		973
		974	// send response server is -1 if the operation fail
		975	message.type=REQUEST_RENEGOTIATE_CONTRACT;
		976	memmove(&message.contract,new_contract, sizeof(fsf_contract_parameters_t));
		977	message.server = server;
		978
		979	port_send(channel[1],&message,BLOCK);
		980
		981	port_receive(channel[0], &message, BLOCK);
		982
		983	if (message.server==-1) return FSF_ERR_CONTRACT_REJECTED;
		984
		985	return 0;
		986	}
		987
407	giacomo	988	void print_server_list()
		989	{
		990
		991	int i;
		992
		993	kern_printf("Server List\n");
		994
410	trimarchi	995	for(i=0;i<current_server;i++) {
407	giacomo	996
662	giacomo	997	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	998
		999	}
		1000
		1001	}
808	trimarchi	1002
		1003
		1004	int fsf_get_remain_budget(fsf_server_id_t server) {
		1005
825	trimarchi	1006	return SERVER_get_remain_capacity(fsf_server_level, server);
808	trimarchi	1007	}
868	trimarchi	1008
		1009	int fsf_get_budget_and_period
		1010	(fsf_server_id_t server,
		1011	struct timespec *budget,
		1012	struct timespec *period) {
		1013	TIME bg;
		1014	TIME pd;
		1015
		1016	if (!SERVER_getbudgetinfo(fsf_server_level, &bg, &pd, NULL, server)) {
		1017	if (budget) {
		1018	NULL_TIMESPEC(budget);
		1019	ADDUSEC2TIMESPEC(bg, budget);
		1020	}
		1021	if (period) {
		1022	NULL_TIMESPEC(period);
		1023	ADDUSEC2TIMESPEC(pd, period);
		1024	}
		1025
		1026	return 0;
		1027	}
		1028	return FSF_ERR_BAD_ARGUMENT;
		1029	}
		1030
		1031	int
		1032	fsf_set_service_thread_data
		1033	(const struct timespec *budget,
		1034	const struct timespec *period,
		1035	bool *accepted) {
		1036
		1037	if (budget==NULL && period==NULL) return FSF_ERR_BAD_ARGUMENT;
		1038	fsf_set_contract_basic_parameters(&service_contract,budget,period,FSF_DEFAULT_WORKLOAD);
		1039	*accepted = !fsf_renegotiate_contract(&service_contract,service_server)?true:false;
		1040	return 0;
		1041
		1042	}
		1043
		1044
		1045
		1046	int fsf_get_service_thread_data
		1047	(struct timespec *budget,
		1048	struct timespec *period) {
		1049
		1050	return fsf_get_budget_and_period(service_server, budget, period);
		1051
		1052	}
		1053

Subversion Repositories shark

(root)/shark/trunk/ports/first/first-server.c - Rev 877