WebSVN - shark - Blame - Rev 975 - /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>
975	trimarchi	16	#include <sem/sem/sem.h>
		17	#include <hartport/hartport/hartport.h>
		18	#include <cabs/cabs/cabs.h>
405	trimarchi	19
881	trimarchi	20	#include "fsf.h"
679	trimarchi	21	#include "fsf_service_task.h"
896	trimarchi	22	#include "fsf_server.h"
679	trimarchi	23	#include "message.h"
221	giacomo	24
868	trimarchi	25	#include "posixstar.h"
		26	#include "edfstar.h"
		27	#include "nonestar.h"
		28	#include "rmstar.h"
944	trimarchi	29	#include "tdstar.h"
868	trimarchi	30
221	giacomo	31	#include <pthread.h>
		32	#include <stdlib.h>
808	trimarchi	33	#include "pistar.h"
975	trimarchi	34	#include <posix/posix/comm_message.h>
221	giacomo	35
417	giacomo	36	//#define FSF_DEBUG
221	giacomo	37
410	trimarchi	38	int current_server=0;
407	giacomo	39	server_elem server_list[FSF_MAX_N_SERVERS];
406	giacomo	40	bandwidth_t fsf_max_bw = 0;
405	trimarchi	41
241	giacomo	42	int fsf_server_level;
868	trimarchi	43	int fsf_posix_level = -1;
808	trimarchi	44	int shared_object_level;
679	trimarchi	45	PID server_task;
868	trimarchi	46	fsf_contract_parameters_t contract;
221	giacomo	47
868	trimarchi	48
679	trimarchi	49	PORT channel[2];
		50
868	trimarchi	51	fsf_server_id_t service_server = -1;
		52	fsf_contract_parameters_t service_contract;
		53
896	trimarchi	54	bandwidth_t SERVER_return_bandwidth();
		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;
881	trimarchi	82	struct timespec default_period = FSF_SERVICE_THREAD_PERIOD;
		83	struct timespec default_budget = FSF_SERVICE_THREAD_BUDGET;
868	trimarchi	84	DUMMY_TASK_MODEL m;
881	trimarchi	85	fsf_sched_params_t pr;
937	trimarchi	86	int budget_overrun_sig_notify = FSF_NULL_SIGNAL;
		87	union sigval budget_overrun_sig_value = {0};
		88	int deadline_miss_sig_notify = FSF_NULL_SIGNAL;
		89	union sigval deadline_miss_sig_value = {0};
868	trimarchi	90
881	trimarchi	91	pr.policy=FSF_NONE;
		92	pr.params=&m;
		93
868	trimarchi	94	dummy_task_default_model(m);
941	trimarchi	95
679	trimarchi	96	// create the service task
		97	// create the communication channel for negotiation and renegotiation
		98
		99	channel[1] = port_create("CHANW",sizeof(struct mess),1,STREAM,WRITE);
		100
		101	channel[0] = port_create("CHANR",sizeof(struct mess),1,STREAM,READ);
		102
868	trimarchi	103	fsf_initialize_contract(&service_contract);
941	trimarchi	104
		105	err=fsf_set_contract_basic_parameters(&service_contract,&default_budget,&default_period,FSF_DEFAULT_WORKLOAD);
		106	if (err) exit(err);
868	trimarchi	107
941	trimarchi	108	err=fsf_set_contract_timing_requirements (&service_contract,
937	trimarchi	109	true,NULL,
		110	budget_overrun_sig_notify,
		111	budget_overrun_sig_value,
		112	deadline_miss_sig_notify,
		113	deadline_miss_sig_value);
941	trimarchi	114	if (err) exit(err);
937	trimarchi	115
868	trimarchi	116	negotiate_contract(&service_contract,&service_server);
		117
		118	//server_task = task_create("stask",service_task,model,NULL);
881	trimarchi	119	err = fsf_create_local_thread(service_server,&pr, &server_task,NULL,(fsf_thread_code_t)service_task,NULL);
868	trimarchi	120	if (err) {
679	trimarchi	121	cprintf("error creating service task\n");
		122	sys_shutdown_message("Could not create service_task");
927	pj	123	exit(1);
679	trimarchi	124	}
		125
		126	task_activate(server_task);
		127
		128	}
		129
		130
221	giacomo	131	/* Convert the contract specification to
		132	* budget parameters
		133	*/
241	giacomo	134	int set_SERVER_budget_from_contract
221	giacomo	135	(const fsf_contract_parameters_t *contract,
		136	int *budget)
		137	{
		138
		139	int local_scheduler_level = 0;
		140
868	trimarchi	141	switch (contract->policy) {
952	trimarchi	142	case FSF_RR:
241	giacomo	143	local_scheduler_level = POSIXSTAR_register_level(fsf_server_level,5000,32);
221	giacomo	144	break;
868	trimarchi	145	case FSF_EDF:
241	giacomo	146	local_scheduler_level = EDFSTAR_register_level(fsf_server_level);
221	giacomo	147	break;
952	trimarchi	148	case FSF_FP:
241	giacomo	149	local_scheduler_level = RMSTAR_register_level(fsf_server_level);
221	giacomo	150	break;
868	trimarchi	151	case FSF_NONE:
855	trimarchi	152	local_scheduler_level = NONESTAR_register_level(fsf_server_level);
334	giacomo	153	break;
944	trimarchi	154	case FSF_TABLE_DRIVEN:
		155	kern_printf("Register level");
		156	local_scheduler_level = TDSTAR_register_level(fsf_server_level);
		157	break;
221	giacomo	158	}
405	trimarchi	159
908	trimarchi	160	if (contract->d_equals_t == true) {
241	giacomo	161	*budget = SERVER_setbudget(fsf_server_level,
221	giacomo	162	TIMESPEC2USEC(&(contract->budget_min)),
		163	TIMESPEC2USEC(&(contract->period_max)),
661	giacomo	164	TIMESPEC2USEC(&(contract->period_max)),
868	trimarchi	165	local_scheduler_level,contract->policy);
661	giacomo	166	} else {
		167	*budget = SERVER_setbudget(fsf_server_level,
		168	TIMESPEC2USEC(&(contract->budget_min)),
		169	TIMESPEC2USEC(&(contract->period_max)),
		170	TIMESPEC2USEC(&(contract->deadline)),
868	trimarchi	171	local_scheduler_level,contract->policy);
661	giacomo	172	}
221	giacomo	173
		174	return 0;
		175
		176	}
		177
405	trimarchi	178	int adjust_SERVER_budget
		179	(int budget, const TIME budget_actual,
661	giacomo	180	const TIME period_actual, const TIME dline_actual)
221	giacomo	181	{
		182
241	giacomo	183	SERVER_adjust_budget(fsf_server_level,
405	trimarchi	184	budget_actual,
		185	period_actual,
661	giacomo	186	dline_actual,
241	giacomo	187	budget);
221	giacomo	188
		189	return 0;
		190
		191	}
		192
		193	/* Admission Test function */
		194	int add_contract(const fsf_contract_parameters_t *contract)
		195	{
896	trimarchi	196	bandwidth_t current_bandwidth,U;
		197
		198	TIME T,Q;
897	trimarchi	199
		200	#ifdef FSF_DEBUG
		201	kern_printf("(GA TEST)");
		202	#endif
896	trimarchi	203	T=TIMESPEC2USEC(&(contract->period_max));
		204	Q=TIMESPEC2USEC(&(contract->budget_min));
		205
		206	mul32div32to32(MAX_BANDWIDTH,Q,T,U);
		207	/* The current bandwidth is the min bandwidth */
		208	current_bandwidth=SERVER_return_bandwidth(fsf_server_level);
		209
897	trimarchi	210	if (fsf_max_bw<current_bandwidth+U) return -1;
896	trimarchi	211
221	giacomo	212	return 0;
		213
		214	}
		215
687	trimarchi	216	void contract_to_server(const fsf_contract_parameters_t *contract, int i) {
		217
410	trimarchi	218	TIME T,Q;
		219	#ifdef FSF_DEBUG
		220	int temp;
		221	#endif
		222
		223	T=TIMESPEC2USEC(&contract->period_min);
		224	Q=TIMESPEC2USEC(&contract->budget_max);
908	trimarchi	225	server_list[i].Cmax=Q;
		226
410	trimarchi	227	mul32div32to32(MAX_BANDWIDTH,Q,T,server_list[current_server].Umax);
		228
417	giacomo	229	T=TIMESPEC2USEC(&contract->period_min);
		230	server_list[i].Tmin=T;
		231
410	trimarchi	232	T=TIMESPEC2USEC(&contract->period_max);
		233	server_list[i].Tmax=T;
417	giacomo	234
410	trimarchi	235	Q=TIMESPEC2USEC(&contract->budget_min);
		236	server_list[i].Cmin=Q;
		237
		238	mul32div32to32(MAX_BANDWIDTH,Q,T,server_list[i].Umin);
416	trimarchi	239	server_list[i].U=server_list[i].Umin;
661	giacomo	240
908	trimarchi	241	if (contract->d_equals_t == true) {
661	giacomo	242	server_list[i].deadline = 0;
908	trimarchi	243	server_list[i].d_equals_t = true;
661	giacomo	244	} else {
		245	server_list[i].deadline = TIMESPEC2USEC(&contract->deadline);;
908	trimarchi	246	server_list[i].d_equals_t = false;
661	giacomo	247	}
		248
843	trimarchi	249	server_list[i].Qs = contract->quality;
		250	server_list[i].Is = contract->importance;
		251
410	trimarchi	252	#ifdef FSF_DEBUG
		253	mul32div32to32(server_list[i].Umax,100, MAX_BANDWIDTH, temp);
		254	kern_printf("(Umax %d)",temp);
		255	mul32div32to32(server_list[i].Umin,100, MAX_BANDWIDTH, temp);
		256	kern_printf("(Umin %d)",temp);
		257	#endif
		258
687	trimarchi	259	}
		260
		261	int relink_contract_to_server(const fsf_contract_parameters_t *contract,
		262	fsf_server_id_t server)
		263	{
		264	int i=0;
		265	#ifdef FSF_DEBUG
		266	kern_printf("(Relink Server %d)",server);
		267	#endif
		268	// find contract
		269	while(i<current_server) {
		270	if (server_list[i].server==server) break;
		271	i++;
		272	}
		273
		274	server_list[i].server=server;
843	trimarchi	275	// server_list[i].Qs=1;
687	trimarchi	276
		277	contract_to_server(contract, i);
		278
		279
410	trimarchi	280	return 0;
		281
		282	}
		283
221	giacomo	284	int link_contract_to_server(const fsf_contract_parameters_t *contract,
		285	fsf_server_id_t server)
		286	{
407	giacomo	287	#ifdef FSF_DEBUG
405	trimarchi	288	kern_printf("(Link Server %d)",server);
		289	#endif
		290
410	trimarchi	291	server_list[current_server].server=server;
843	trimarchi	292	//server_list[current_server].Qs=1;
405	trimarchi	293
687	trimarchi	294	contract_to_server(contract,current_server);
405	trimarchi	295
410	trimarchi	296	current_server++;
221	giacomo	297	return 0;
		298
		299	}
		300
		301	int remove_contract(fsf_server_id_t server)
		302	{
405	trimarchi	303	int i=0;
		304	// find the contract
410	trimarchi	305	while(i<current_server) {
405	trimarchi	306	if (server_list[i].server==server) break;
		307	i++;
		308	}
221	giacomo	309
405	trimarchi	310	// compress the array;
410	trimarchi	311	while (i<(current_server-1)) {
405	trimarchi	312	server_list[i].server=server_list[i+1].server;
		313	server_list[i].Umin=server_list[i+1].Umin;
416	trimarchi	314	server_list[i].U=server_list[i+1].Umin;
405	trimarchi	315	server_list[i].Umax=server_list[i+1].Umax;
		316	server_list[i].Cmin=server_list[i+1].Cmin;
908	trimarchi	317	server_list[i].Cmax=server_list[i+1].Cmax;
417	giacomo	318	server_list[i].Tmin=server_list[i+1].Tmin;
405	trimarchi	319	server_list[i].Tmax=server_list[i+1].Tmax;
		320	server_list[i].Qs=server_list[i+1].Qs;
661	giacomo	321	server_list[i].deadline = server_list[i+1].deadline;
		322	server_list[i].d_equals_t = server_list[i+1].d_equals_t;
843	trimarchi	323	server_list[i].Is = server_list[i+1].Is;
417	giacomo	324
405	trimarchi	325	i++;
		326	}
410	trimarchi	327	current_server--;
405	trimarchi	328
		329
221	giacomo	330	return 0;
		331
		332	}
		333
868	trimarchi	334	int
		335	fsf_get_renegotiation_status
		336	(fsf_server_id_t server,
		337	fsf_renegotiation_status_t *renegotiation_status)
		338	{
221	giacomo	339
868	trimarchi	340	if (SERVER_get_renegotiation_status(fsf_server_level,server))
		341	*renegotiation_status=FSF_IN_PROGRESS;
		342	else
		343	*renegotiation_status=FSF_ADMITTED;
		344
		345	return 0;
		346
		347
		348	}
		349
896	trimarchi	350	int
		351	fsf_request_change_quality_and_importance
		352	(fsf_server_id_t server,
		353	int new_importance,
		354	int new_quality)
		355	{
		356	struct mess m;
868	trimarchi	357
896	trimarchi	358	// send response server is -1 if the operation fail
		359	m.type=CHANGE_PARAMETER;
908	trimarchi	360	m.server=server;
		361	m.qi.quality = new_quality;
		362	m.qi.importance = new_importance;
896	trimarchi	363	//memmove(&m.contract,contract, sizeof(fsf_contract_parameters_t));
		364
		365	port_send(channel[1],&m,BLOCK);
		366
		367	port_receive(channel[0], &m, BLOCK);
		368
		369	if (m.server==-1)
		370	return FSF_ERR_CONTRACT_REJECTED;
		371
		372	//*server=m.server;
		373
908	trimarchi	374	return 0;
896	trimarchi	375	}
		376
		377
221	giacomo	378	int fsf_negotiate_contract
		379	(const fsf_contract_parameters_t *contract,
		380	fsf_server_id_t *server)
		381	{
880	trimarchi	382	struct mess m;
221	giacomo	383
679	trimarchi	384	// send response server is -1 if the operation fail
880	trimarchi	385	m.type=NEGOTIATE_CONTRACT;
		386	memmove(&m.contract,contract, sizeof(fsf_contract_parameters_t));
		387	port_send(channel[1],&m,BLOCK);
		388	port_receive(channel[0], &m, BLOCK);
963	trimarchi	389	if (m.server==-1) {
		390	*server=0;
		391	return 0;
		392	}
221	giacomo	393
880	trimarchi	394	*server=m.server;
679	trimarchi	395
221	giacomo	396	return 0;
		397
		398	}
		399
872	trimarchi	400	int
		401	fsf_negotiate_contract_for_new_thread
		402	(const fsf_contract_parameters_t *contract,
		403	fsf_server_id_t *server,
		404	pthread_t *thread,
		405	pthread_attr_t *attr,
		406	fsf_thread_code_t thread_code,
		407	void *arg) {
		408
		409	int err=0;
		410
		411	err = fsf_negotiate_contract(contract,server);
		412	if (!err) {
		413	err = pthread_create(thread, attr, thread_code, arg);
		414	if (!err)
		415	err = fsf_bind_thread_to_server(server,thread);
		416	} else return err;
		417
		418	return err;
		419	}
		420
		421	int
		422	fsf_negotiate_contract_for_myself
		423	(const fsf_contract_parameters_t *contract,
		424	fsf_server_id_t *server) {
		425
		426	int err=0;
		427
		428	err = fsf_negotiate_contract(contract,server);
		429	if (!err) {
937	trimarchi	430	#ifdef FSF_DEBUG
		431	kern_printf("Bind task");
		432	#endif
872	trimarchi	433	err = fsf_bind_thread_to_server(*server,exec_shadow);
937	trimarchi	434
872	trimarchi	435	} else return err;
		436
		437	return err;
		438	}
		439
868	trimarchi	440	int fsf_unbind_thread_from_server
		441	(pthread_t thread)
		442	{
		443
		444	int local_scheduler_level, scheduler_id;
963	trimarchi	445	SYS_FLAGS f;
868	trimarchi	446	/* Move thread from the local scheduler module to posix level */
		447
		448	#ifdef FSF_DEBUG
		449	kern_printf("(UnBind thread = %d)",thread);
		450	#endif
963	trimarchi	451	f=kern_fsave();
868	trimarchi	452	/* Check if thread exsists */
963	trimarchi	453	if (thread == -1) {
		454	kern_frestore(f);
868	trimarchi	455	return FSF_ERR_BAD_ARGUMENT;
963	trimarchi	456	}
868	trimarchi	457
		458	local_scheduler_level = SERVER_get_local_scheduler_level_from_pid(fsf_server_level,thread);
		459	scheduler_id = SERVER_get_local_scheduler_id_from_pid(fsf_server_level,thread);
963	trimarchi	460
868	trimarchi	461	/* Check if thread is already bind */
		462	if (scheduler_id == FSF_NONE) {
		463	/* Check if it is bind to a server */
963	trimarchi	464	if (NONESTAR_getbudget(local_scheduler_level,thread) == -1) {
		465	kern_frestore(f);
868	trimarchi	466	return FSF_ERR_BAD_ARGUMENT;
963	trimarchi	467	}
868	trimarchi	468	else {
		469
		470	STD_command_message *msg;
		471	NRT_TASK_MODEL nrt;
		472
		473	nrt_task_default_model(nrt);
		474	nrt_task_def_save_arrivals(nrt);
963	trimarchi	475	nrt_task_def_weight(nrt,0);
		476	nrt_task_def_policy(nrt,NRT_RR_POLICY);
		477	nrt_task_def_inherit(nrt,NRT_EXPLICIT_SCHED);
868	trimarchi	478
		479	/* Send change level command to local scheduler */
		480	msg = (STD_command_message *)malloc(sizeof(STD_command_message));
		481
		482	msg->command = STD_SET_NEW_MODEL;
		483	msg->param = (void *)(&nrt);
		484	level_table[fsf_posix_level]->public_message(fsf_posix_level,thread,msg);
		485
		486	msg->command = STD_SET_NEW_LEVEL;
		487	msg->param = (void *)(fsf_posix_level);
		488	task_message(msg,thread,0);
963	trimarchi	489	//if (exec_shadow!=thread)
		490	level_table[proc_table[thread].task_level]->public_epilogue(proc_table[thread].task_level, thread);
		491	//else {
		492	//scheduler();
		493	//kern_context_load(proc_table[exec_shadow].context);
		494	//}
		495	kern_frestore(f);
868	trimarchi	496
		497	free(msg);
		498	}
963	trimarchi	499	} else {
		500	kern_frestore(f);
		501	return FSF_ERR_BAD_ARGUMENT;
868	trimarchi	502	}
		503
		504	return 0;
		505
		506	}
		507
873	trimarchi	508	int
		509	fsf_bind_local_thread_to_server
		510	(fsf_server_id_t server,
		511	pthread_t thread,
		512	fsf_sched_params_t *sched_params)
		513	{
868	trimarchi	514
873	trimarchi	515	STD_command_message *msg;
		516	int local_scheduler_level,scheduler_id;
		517
		518	/* Move thread from the posix module to local scheduler */
		519
		520	#ifdef FSF_DEBUG
		521	kern_printf("(Bind thread = %d to Server = %d)",thread,server);
		522	#endif
		523
		524	/* Check if server and thread exsist */
		525	if (server == -1 \|\| thread == -1)
		526	return FSF_ERR_BAD_ARGUMENT;
		527
		528	local_scheduler_level = SERVER_get_local_scheduler_level_from_budget(fsf_server_level,server);
		529	if (local_scheduler_level==-1)
952	trimarchi	530	return FSF_ERR_UNKNOWN_SCHEDULED_THREAD;
873	trimarchi	531
		532	scheduler_id = SERVER_get_local_scheduler_id_from_budget(fsf_server_level,server);
881	trimarchi	533
		534	if (scheduler_id!=sched_params->policy)
		535	return FSF_ERR_SCHED_POLICY_NOT_COMPATIBLE;
873	trimarchi	536
		537	/* Check if thread is already bind */
		538	switch(scheduler_id) {
		539
952	trimarchi	540	case FSF_FP:
873	trimarchi	541	{
881	trimarchi	542	TASK_MODEL m=(TASK_MODEL)(sched_params->params);
		543	HARD_TASK_MODEL h=(HARD_TASK_MODEL )(sched_params->params);
873	trimarchi	544
		545	if (m->pclass != HARD_PCLASS)
		546	return FSF_ERR_SCHED_POLICY_NOT_COMPATIBLE;
		547
		548	h = (HARD_TASK_MODEL *)m;
		549
		550	if (!h->wcet \|\| !h->mit) return FSF_ERR_SCHED_POLICY_NOT_COMPATIBLE;
		551
		552	/* now we know that m is a valid model */
		553	if (RMSTAR_getbudget(local_scheduler_level,thread) != -1)
		554	return FSF_ERR_BAD_ARGUMENT;
		555
		556	/* Set server on local scheduler */
		557	RMSTAR_setbudget(local_scheduler_level,thread,(int)(server));
		558
		559	/* Send change level command to posix level */
		560	}
877	trimarchi	561	break;
		562
873	trimarchi	563	case FSF_EDF:
		564	{
881	trimarchi	565	TASK_MODEL m=(TASK_MODEL)(sched_params->params);
		566	HARD_TASK_MODEL h=(HARD_TASK_MODEL )(sched_params->params);
873	trimarchi	567
		568	if (m->pclass != HARD_PCLASS)
		569	return FSF_ERR_SCHED_POLICY_NOT_COMPATIBLE;
		570
		571	h = (HARD_TASK_MODEL *)m;
		572
		573	if (!h->wcet \|\| !h->mit) return FSF_ERR_SCHED_POLICY_NOT_COMPATIBLE;
		574
		575	if (EDFSTAR_getbudget(local_scheduler_level,thread) != -1)
		576	return FSF_ERR_BAD_ARGUMENT;
		577
		578	/* Set server on local scheduler */
		579	EDFSTAR_setbudget(local_scheduler_level,thread,(int)(server));
		580
		581	}
		582	break;
		583
952	trimarchi	584	case FSF_RR:
873	trimarchi	585	{
881	trimarchi	586	TASK_MODEL m=(TASK_MODEL)(sched_params->params);
873	trimarchi	587
		588	if (m->pclass != NRT_PCLASS)
		589	return FSF_ERR_SCHED_POLICY_NOT_COMPATIBLE;
		590
		591	if (POSIXSTAR_getbudget(local_scheduler_level,thread) != -1)
		592	return FSF_ERR_BAD_ARGUMENT;
		593
		594	/* Set server on local scheduler */
		595	POSIXSTAR_setbudget(local_scheduler_level,thread,(int)(server));
		596	}
877	trimarchi	597	break;
873	trimarchi	598
877	trimarchi	599	default:
		600
873	trimarchi	601	return FSF_ERR_BAD_ARGUMENT;
877	trimarchi	602
873	trimarchi	603	}
		604
		605	msg = (STD_command_message *)malloc(sizeof(STD_command_message));
877	trimarchi	606	if (msg) {
		607	SYS_FLAGS f;
		608	f=kern_fsave();
873	trimarchi	609	msg->command = STD_SET_NEW_MODEL;
881	trimarchi	610	msg->param = (void *)(sched_params->params);
873	trimarchi	611	level_table[local_scheduler_level]->public_message(local_scheduler_level,thread,msg);
		612
		613	msg->command = STD_SET_NEW_LEVEL;
		614	msg->param = (void *)(local_scheduler_level);
		615	task_message(msg,thread,0);
940	trimarchi	616	scheduler();
		617	kern_context_load(proc_table[exec_shadow].context);
877	trimarchi	618	kern_frestore(f);
873	trimarchi	619	free(msg);
		620	} else return FSF_ERR_INTERNAL_ERROR;
		621
		622	return 0;
		623
		624	}
		625
		626
868	trimarchi	627	int fsf_bind_thread_to_server
		628	(fsf_server_id_t server,
		629	pthread_t thread)
		630	{
		631
963	trimarchi	632	STD_command_message *msg=0;
868	trimarchi	633	int local_scheduler_level,scheduler_id;
937	trimarchi	634	SYS_FLAGS f;
868	trimarchi	635	/* Move thread from the posix module to local scheduler */
		636
963	trimarchi	637	f=kern_fsave();
868	trimarchi	638	#ifdef FSF_DEBUG
880	trimarchi	639	kern_printf("(Bthr=%d to Sr=%d)",thread,server);
868	trimarchi	640	#endif
		641
		642	/* Check if server and thread exsist */
		643	if (server == -1 \|\| thread == -1)
		644	return FSF_ERR_BAD_ARGUMENT;
		645
		646	local_scheduler_level = SERVER_get_local_scheduler_level_from_budget(fsf_server_level,server);
873	trimarchi	647	if (local_scheduler_level==-1)
952	trimarchi	648	return FSF_ERR_UNKNOWN_SCHEDULED_THREAD;
873	trimarchi	649
868	trimarchi	650	scheduler_id = SERVER_get_local_scheduler_id_from_budget(fsf_server_level,server);
		651	/* Check if thread is already bind */
		652	if (scheduler_id == FSF_NONE) {
		653	DUMMY_TASK_MODEL rt_arg;
963	trimarchi	654	if (NONESTAR_getbudget(local_scheduler_level,thread) != -1) {
		655	kern_frestore(f);
868	trimarchi	656	return FSF_ERR_BAD_ARGUMENT;
963	trimarchi	657	}
868	trimarchi	658	/* Set server on local scheduler */
		659	NONESTAR_setbudget(local_scheduler_level,thread,(int)(server));
963	trimarchi	660
868	trimarchi	661	/* Send change level command to posix level */
		662	msg = (STD_command_message *)malloc(sizeof(STD_command_message));
963	trimarchi	663	if (!msg) exit(-1);
868	trimarchi	664	msg->command = STD_SET_NEW_MODEL;
		665	msg->param = (void *)(&rt_arg);
937	trimarchi	666	level_table[local_scheduler_level]->public_message(local_scheduler_level,thread,msg);
868	trimarchi	667	msg->command = STD_SET_NEW_LEVEL;
		668	msg->param = (void *)(local_scheduler_level);
963	trimarchi	669	task_message(msg,thread,0);
		670	//if (thread!=exec_shadow) {
		671	level_table[proc_table[thread].task_level]->public_dispatch(proc_table[thread].task_level, thread, 0);
		672	level_table[proc_table[thread].task_level]->public_epilogue(proc_table[thread].task_level, thread);
		673	//} else {
		674	if (cap_timer != NIL) {
		675	event_delete(cap_timer);
		676	cap_timer = NIL;
		677	}
		678
937	trimarchi	679	scheduler();
		680	kern_context_load(proc_table[exec_shadow].context);
963	trimarchi	681	//}
937	trimarchi	682	kern_frestore(f);
		683
		684
963	trimarchi	685	if (msg) free(msg);
937	trimarchi	686
963	trimarchi	687	} else {
		688	kern_frestore(f);
		689	return FSF_ERR_BAD_ARGUMENT;
		690	}
868	trimarchi	691	return 0;
		692	}
		693
881	trimarchi	694	int fsf_create_local_thread
		695	(fsf_server_id_t server,
		696	fsf_sched_params_t *local_scheduler_arg,
		697	pthread_t *thread,
		698	pthread_attr_t *attr,
		699	fsf_thread_code_t thread_code,
		700	void *arg)
221	giacomo	701	{
		702
		703	int local_scheduler_level,scheduler_id;
		704
		705	/* Check if server and thread exsist */
241	giacomo	706	if (server == NIL)
873	trimarchi	707	return FSF_ERR_BAD_ARGUMENT;
221	giacomo	708
241	giacomo	709	local_scheduler_level = SERVER_get_local_scheduler_level_from_budget(fsf_server_level,server);
		710	scheduler_id = SERVER_get_local_scheduler_id_from_budget(fsf_server_level,server);
868	trimarchi	711	#ifdef FSF_DEBUG
		712	kern_printf("sched policy %d", scheduler_id);
		713	#endif
888	trimarchi	714
		715	if (scheduler_id!=local_scheduler_arg->policy)
		716	return FSF_ERR_SCHED_POLICY_NOT_COMPATIBLE;
		717
221	giacomo	718	/* Check if thread is already bind */
		719	switch (scheduler_id) {
952	trimarchi	720	case FSF_RR:
221	giacomo	721
888	trimarchi	722	nrt_task_def_arg((NRT_TASK_MODEL )(local_scheduler_arg->params),arg);
		723	nrt_task_def_level((NRT_TASK_MODEL )(local_scheduler_arg->params),local_scheduler_level);
221	giacomo	724
888	trimarchi	725	*thread = task_create("POSIXSTAR", thread_code, local_scheduler_arg->params, NULL);
267	giacomo	726	if (*thread == NIL) {
		727	#ifdef FSF_DEBUG
		728	kern_printf("(FSF:Error creating thread)");
		729	#endif
873	trimarchi	730	return FSF_ERR_INTERNAL_ERROR;
267	giacomo	731	}
221	giacomo	732
241	giacomo	733	POSIXSTAR_setbudget(local_scheduler_level, *thread, (int)(server));
234	giacomo	734
221	giacomo	735	break;
868	trimarchi	736	case FSF_EDF:
221	giacomo	737
888	trimarchi	738	hard_task_def_arg((HARD_TASK_MODEL )(local_scheduler_arg->params),arg);
		739	hard_task_def_level((HARD_TASK_MODEL )(local_scheduler_arg->params),local_scheduler_level);
250	giacomo	740
888	trimarchi	741	*thread = task_create("EDFSTAR", thread_code, local_scheduler_arg->params, NULL);
250	giacomo	742	if (*thread == NIL)
873	trimarchi	743	return FSF_ERR_INTERNAL_ERROR;
250	giacomo	744
		745	EDFSTAR_setbudget(local_scheduler_level, *thread, (int)(server));
		746
221	giacomo	747	break;
235	giacomo	748
952	trimarchi	749	case FSF_FP:
235	giacomo	750
888	trimarchi	751	hard_task_def_arg((HARD_TASK_MODEL )(local_scheduler_arg->params),arg);
		752	hard_task_def_level((HARD_TASK_MODEL )(local_scheduler_arg->params),local_scheduler_level);
273	giacomo	753
888	trimarchi	754	*thread = task_create("RMSTAR", thread_code, local_scheduler_arg->params, NULL);
273	giacomo	755	if (*thread == NIL)
873	trimarchi	756	return FSF_ERR_INTERNAL_ERROR;
273	giacomo	757
		758	RMSTAR_setbudget(local_scheduler_level, *thread, (int)(server));
		759
		760	break;
868	trimarchi	761	case FSF_NONE:
334	giacomo	762
888	trimarchi	763	dummy_task_def_arg(( DUMMY_TASK_MODEL )(local_scheduler_arg->params),arg);
		764	dummy_task_def_level(( DUMMY_TASK_MODEL )(local_scheduler_arg->params),local_scheduler_level);
910	trimarchi	765
888	trimarchi	766	*thread = task_create("NONESTAR", thread_code, local_scheduler_arg->params, NULL);
334	giacomo	767	if (*thread == NIL)
873	trimarchi	768	return FSF_ERR_INTERNAL_ERROR;
334	giacomo	769
855	trimarchi	770	NONESTAR_setbudget(local_scheduler_level, *thread, (int)(server));
334	giacomo	771
		772	break;
910	trimarchi	773
		774	case FSF_TABLE_DRIVEN:
		775	{
944	trimarchi	776	HARD_TASK_MODEL ht;
		777	hard_task_default_model(ht);
		778	hard_task_def_aperiodic(ht);
910	trimarchi	779
944	trimarchi	780	hard_task_def_arg(ht,arg);
		781	hard_task_def_level(ht,local_scheduler_level);
910	trimarchi	782
944	trimarchi	783	*thread = task_create("TDSTAR", thread_code, &ht, NULL);
910	trimarchi	784	if (*thread == NIL)
		785	return FSF_ERR_INTERNAL_ERROR;
		786
930	trimarchi	787	TDSTAR_setbudget(local_scheduler_level, *thread, (int)(server));
944	trimarchi	788	TDSTAR_settable(local_scheduler_level, (fsf_table_driven_params_t )(local_scheduler_arg->params),thread);
910	trimarchi	789	}
		790	break;
		791
334	giacomo	792
221	giacomo	793	default:
873	trimarchi	794	return FSF_ERR_INTERNAL_ERROR;
221	giacomo	795	break;
		796	}
811	trimarchi	797
		798	#ifdef FSF_DEBUG
		799	kern_printf("(FSF:Insert thread = %d to Server = %d)",*thread,server);
		800	#endif
221	giacomo	801
		802	return 0;
		803
		804	}
		805
808	trimarchi	806	int fsf_settask_nopreemptive
221	giacomo	807	(fsf_server_id_t *server,
		808	pthread_t thread)
		809	{
		810	int local_scheduler_level, scheduler_id;
		811
241	giacomo	812	local_scheduler_level = SERVER_get_local_scheduler_level_from_pid(fsf_server_level,thread);
		813	scheduler_id = SERVER_get_local_scheduler_id_from_pid(fsf_server_level, thread);
221	giacomo	814
		815	switch (scheduler_id) {
952	trimarchi	816	case FSF_RR:
816	trimarchi	817	POSIXSTAR_set_nopreemtive_current(local_scheduler_level);
		818	return 1;
808	trimarchi	819	break;
868	trimarchi	820	case FSF_EDF:
808	trimarchi	821	EDFSTAR_set_nopreemtive_current(local_scheduler_level);
		822	return 1;
		823	break;
952	trimarchi	824	case FSF_FP:
812	trimarchi	825	RMSTAR_set_nopreemtive_current(local_scheduler_level);
		826	return 1;
808	trimarchi	827	break;
868	trimarchi	828	case FSF_NONE:
808	trimarchi	829	break;
		830	default:
		831	return -1;
		832	}
		833	return -1;
		834	}
		835
		836
		837	int fsf_settask_preemptive
		838	(fsf_server_id_t *server,
		839	pthread_t thread)
		840	{
		841	int local_scheduler_level, scheduler_id;
		842
		843	local_scheduler_level = SERVER_get_local_scheduler_level_from_pid(fsf_server_level,thread);
		844	scheduler_id = SERVER_get_local_scheduler_id_from_pid(fsf_server_level, thread);
		845
		846	switch (scheduler_id) {
952	trimarchi	847	case FSF_RR:
823	trimarchi	848	POSIXSTAR_unset_nopreemtive_current(local_scheduler_level);
816	trimarchi	849	return 1;
808	trimarchi	850	break;
868	trimarchi	851	case FSF_EDF:
808	trimarchi	852	EDFSTAR_unset_nopreemtive_current(local_scheduler_level);
		853	return 1;
		854	break;
952	trimarchi	855	case FSF_FP:
812	trimarchi	856	RMSTAR_unset_nopreemtive_current(local_scheduler_level);
		857	return 1;
808	trimarchi	858	break;
868	trimarchi	859	case FSF_NONE:
808	trimarchi	860	break;
		861	default:
		862	return -1;
		863	}
		864
		865	return -1;
		866
		867	}
		868
		869
		870	int fsf_get_server
868	trimarchi	871	(pthread_t thread,
		872	fsf_server_id_t *server)
808	trimarchi	873	{
		874	int local_scheduler_level, scheduler_id;
		875
		876	local_scheduler_level = SERVER_get_local_scheduler_level_from_pid(fsf_server_level,thread);
		877	scheduler_id = SERVER_get_local_scheduler_id_from_pid(fsf_server_level, thread);
		878
		879	switch (scheduler_id) {
952	trimarchi	880	case FSF_RR:
829	giacomo	881	*server = POSIXSTAR_getbudget(local_scheduler_level,thread);
		882	return 0;
868	trimarchi	883	case FSF_EDF:
829	giacomo	884	*server = EDFSTAR_getbudget(local_scheduler_level,thread);
		885	return 0;
952	trimarchi	886	case FSF_FP:
829	giacomo	887	*server = RMSTAR_getbudget(local_scheduler_level,thread);
		888	return 0;
868	trimarchi	889	case FSF_NONE:
855	trimarchi	890	*server = NONESTAR_getbudget(local_scheduler_level,thread);
829	giacomo	891	return 0;
235	giacomo	892	default:
221	giacomo	893	return -1;
		894	}
		895
		896	return -1;
		897
		898	}
		899
339	giacomo	900	int fsf_get_server_level(void)
		901	{
		902
		903	return fsf_server_level;
		904
		905	}
		906
221	giacomo	907	int fsf_cancel_contract
868	trimarchi	908	(fsf_server_id_t server)
221	giacomo	909	{
		910
		911	int local_scheduler_level, scheduler_id;
411	trimarchi	912	SYS_FLAGS f;
		913	TIME T,Q;
963	trimarchi	914	int i=0,err=0;
221	giacomo	915
963	trimarchi	916
221	giacomo	917	#ifdef FSF_DEBUG
868	trimarchi	918	kern_printf("(Remove server %d)",server);
221	giacomo	919	#endif
		920
		921	/* Check server id */
868	trimarchi	922	if (server < 0)
873	trimarchi	923	return FSF_ERR_BAD_ARGUMENT;
221	giacomo	924
868	trimarchi	925	local_scheduler_level = SERVER_get_local_scheduler_level_from_budget(fsf_server_level,server);
		926	scheduler_id = SERVER_get_local_scheduler_id_from_budget(fsf_server_level,server);
221	giacomo	927
		928	switch (scheduler_id) {
952	trimarchi	929	case FSF_RR:
221	giacomo	930
		931	/* Check if some thread use the server */
868	trimarchi	932	if(POSIXSTAR_budget_has_thread(local_scheduler_level,server))
873	trimarchi	933	return FSF_ERR_NOT_CONTRACTED_SERVER;
221	giacomo	934
		935	break;
868	trimarchi	936	case FSF_EDF:
235	giacomo	937	/* Check if some thread use the server */
868	trimarchi	938	if(EDFSTAR_budget_has_thread(local_scheduler_level,server))
873	trimarchi	939	return FSF_ERR_NOT_CONTRACTED_SERVER;
235	giacomo	940	break;
		941
952	trimarchi	942	case FSF_FP:
235	giacomo	943	/* Check if some thread use the server */
868	trimarchi	944	if(RMSTAR_budget_has_thread(local_scheduler_level,server))
873	trimarchi	945	return FSF_ERR_NOT_CONTRACTED_SERVER;
235	giacomo	946
221	giacomo	947	break;
334	giacomo	948
868	trimarchi	949	case FSF_NONE:
334	giacomo	950	/* Check if some thread use the server */
963	trimarchi	951	if(NONESTAR_budget_has_thread(local_scheduler_level,server)) {
		952	err=fsf_unbind_thread_from_server(NONESTAR_get_current(local_scheduler_level));
		953	if (err) return err;
		954	}
334	giacomo	955
		956	break;
		957
221	giacomo	958	}
963	trimarchi	959
868	trimarchi	960	SERVER_removebudget(fsf_server_level,server);
221	giacomo	961
		962	level_free_descriptor(local_scheduler_level);
405	trimarchi	963
868	trimarchi	964	remove_contract(server);
411	trimarchi	965
		966	f=kern_fsave();
		967	if (recalculate_contract(fsf_max_bw)==-1) {
		968	kern_frestore(f);
873	trimarchi	969	return FSF_ERR_INTERNAL_ERROR;
411	trimarchi	970	}
		971	#ifdef FSF_DEBUG
		972	kern_printf("(Adjust budget)");
		973	#endif
		974	for (i=0; i<current_server; i++) {
963	trimarchi	975
411	trimarchi	976	mul32div32to32(MAX_BANDWIDTH,server_list[i].Cmin,server_list[i].U,T);
963	trimarchi	977
417	giacomo	978	if (T > server_list[i].Tmin ) {
411	trimarchi	979	server_list[i].actual_budget = server_list[i].Cmin;
963	trimarchi	980
		981	if (T > server_list[i].Tmax)
		982	T=server_list[i].Tmax;
		983
411	trimarchi	984	server_list[i].actual_period = T;
963	trimarchi	985	server_list[i].actual_budget = server_list[i].Cmin;
		986
417	giacomo	987	#ifdef FSF_DEBUG
		988	kern_printf("(1 - Q %ld T %ld)", server_list[i].actual_budget, server_list[i].actual_period);
		989	#endif
963	trimarchi	990
908	trimarchi	991	if (server_list[i].d_equals_t == true)
963	trimarchi	992	adjust_SERVER_budget(server_list[i].server,server_list[i].Cmin, T, T);
661	giacomo	993	else
963	trimarchi	994	adjust_SERVER_budget(server_list[i].server,server_list[i].Cmin, T, T); // server_list[i].deadline);
		995
411	trimarchi	996	} else {
963	trimarchi	997
417	giacomo	998	mul32div32to32(server_list[i].Tmin,server_list[i].U,MAX_BANDWIDTH,Q);
963	trimarchi	999
		1000
		1001	if (Q>server_list[i].Cmax)
		1002	Q=server_list[i].Cmax;
		1003
411	trimarchi	1004	server_list[i].actual_budget = Q;
417	giacomo	1005	server_list[i].actual_period = server_list[i].Tmin;
		1006	#ifdef FSF_DEBUG
		1007	kern_printf("(2 - Q %ld T %ld)", server_list[i].actual_budget, server_list[i].actual_period);
		1008	#endif
661	giacomo	1009
908	trimarchi	1010	if (server_list[i].d_equals_t == true)
963	trimarchi	1011	adjust_SERVER_budget(server_list[i].server,Q, server_list[i].Tmin, server_list[i].Tmin);
661	giacomo	1012	else
963	trimarchi	1013	adjust_SERVER_budget(server_list[i].server,Q, server_list[i].Tmin, server_list[i].Tmin); //server_list[i].deadline);
661	giacomo	1014
963	trimarchi	1015
411	trimarchi	1016	}
416	trimarchi	1017	server_list[i].U=server_list[i].Umin;
411	trimarchi	1018
		1019	}
221	giacomo	1020
405	trimarchi	1021
411	trimarchi	1022	kern_frestore(f);
221	giacomo	1023
		1024	return 0;
411	trimarchi	1025
221	giacomo	1026	}
		1027
881	trimarchi	1028	bandwidth_t SERVER_return_bandwidth() {
		1029	int i=0;
		1030	bandwidth_t U;
		1031	U=0;
		1032	for(i=0;i<current_server;i++) {
		1033
		1034	U+=server_list[i].Umin;
		1035
		1036	}
		1037
		1038	return U;
		1039	}
		1040
405	trimarchi	1041	int recalculate_contract(bandwidth_t U) {
416	trimarchi	1042	bandwidth_t current_bandwidth;
418	giacomo	1043	unsigned int temp_U;
416	trimarchi	1044	int Qt;
405	trimarchi	1045	int isok=0;
		1046	int i=0;
868	trimarchi	1047	int target_importance=FSF_DEFAULT_IMPORTANCE;
		1048
		1049	#define MAX_IMPORTANCE 5
405	trimarchi	1050
896	trimarchi	1051	#ifdef FSF_DEBUG
		1052	int temp;
		1053
908	trimarchi	1054	kern_printf("(RC)");
896	trimarchi	1055	#endif
405	trimarchi	1056
		1057	/* The current bandwidth is the min bandwidth */
881	trimarchi	1058	current_bandwidth=SERVER_return_bandwidth(fsf_server_level);
405	trimarchi	1059	#ifdef FSF_DEBUG
908	trimarchi	1060	kern_printf("(SER%d)", current_server);
405	trimarchi	1061	#endif
880	trimarchi	1062	//kern_printf("(CS:%d)", current_server);
405	trimarchi	1063	do {
		1064	current_bandwidth=0;
		1065	Qt=0;
410	trimarchi	1066	for (i=0; i<current_server; i++) {
843	trimarchi	1067	if (server_list[i].Is==target_importance
		1068	&& server_list[i].U<server_list[i].Umax && server_list[i].Qs>0)
405	trimarchi	1069	Qt+=server_list[i].Qs;
416	trimarchi	1070	current_bandwidth+=server_list[i].U;
868	trimarchi	1071	#ifdef FSF_DEBUG
843	trimarchi	1072	kern_printf("(Qs %d, Qt %d, Is %d)", server_list[i].Qs, Qt,server_list[i].Is);
868	trimarchi	1073	#endif
405	trimarchi	1074	}
413	trimarchi	1075
868	trimarchi	1076	#ifdef FSF_DEBUG
908	trimarchi	1077	kern_printf("(TQ%d)", Qt);
868	trimarchi	1078	#endif
405	trimarchi	1079	isok=1;
410	trimarchi	1080	for (i=0; i<current_server; i++) {
843	trimarchi	1081	if (server_list[i].Is==target_importance && server_list[i].U<server_list[i].Umax && server_list[i].Qs>0) {
416	trimarchi	1082	temp_U=server_list[i].U;
		1083	server_list[i].U=U-current_bandwidth;
963	trimarchi	1084	//kern_printf("before mull");
416	trimarchi	1085	mul32div32to32(server_list[i].U, server_list[i].Qs, Qt, server_list[i].U);
963	trimarchi	1086	//kern_printf("after mull");
416	trimarchi	1087	temp_U+=server_list[i].U;
		1088
		1089	if (temp_U<=server_list[i].Umin) {
405	trimarchi	1090	server_list[i].U=server_list[i].Umin;
416	trimarchi	1091	} else if (temp_U>server_list[i].Umax) {
		1092	server_list[i].U=server_list[i].Umax;
405	trimarchi	1093	isok=0;
		1094	} else server_list[i].U=temp_U;
		1095
		1096	#ifdef FSF_DEBUG
		1097	mul32div32to32(server_list[i].U,100, MAX_BANDWIDTH, temp);
908	trimarchi	1098	kern_printf("(SER %d BW %d)", server_list[i].server, temp);
405	trimarchi	1099	#endif
		1100	}
		1101	}
843	trimarchi	1102	target_importance++;
880	trimarchi	1103	} while (!isok \|\| target_importance<=MAX_IMPORTANCE);
963	trimarchi	1104
405	trimarchi	1105	return 0;
		1106	}
		1107
937	trimarchi	1108
		1109	int fsf_negotiate_group
		1110	(const fsf_contracts_group_t *contracts_up,
		1111	const fsf_servers_group_t *severs_down,
		1112	fsf_servers_group_t *severs_up,
		1113	bool *accepted) {
		1114
		1115	return 0;
		1116	}
		1117
221	giacomo	1118	int fsf_renegotiate_contract
		1119	(const fsf_contract_parameters_t *new_contract,
		1120	fsf_server_id_t server)
		1121	{
679	trimarchi	1122
908	trimarchi	1123	struct mess msg;
221	giacomo	1124
679	trimarchi	1125	// send response server is -1 if the operation fail
908	trimarchi	1126	msg.type=RENEGOTIATE_CONTRACT;
		1127	memmove(&msg.contract,new_contract, sizeof(fsf_contract_parameters_t));
		1128	msg.server = server;
		1129	//kern_printf("(REN %d)", server);
		1130	port_send(channel[1],&msg,BLOCK);
963	trimarchi	1131	//kern_printf("After send\n");
908	trimarchi	1132	port_receive(channel[0], &msg, BLOCK);
963	trimarchi	1133	//kern_printf("After receive\n");
		1134	//kern_printf("(EREN %d)", msg.server);
908	trimarchi	1135	if (msg.server==-1) return FSF_ERR_CONTRACT_REJECTED;
679	trimarchi	1136
405	trimarchi	1137	return 0;
221	giacomo	1138	}
241	giacomo	1139
868	trimarchi	1140	int fsf_request_contract_renegotiation
		1141	(const fsf_contract_parameters_t *new_contract,
		1142	fsf_server_id_t server,
		1143	int sig_notify,
		1144	union sigval sig_value)
		1145	{
		1146
908	trimarchi	1147	struct mess msg;
868	trimarchi	1148
		1149	// send response server is -1 if the operation fail
908	trimarchi	1150	msg.type=REQUEST_RENEGOTIATE_CONTRACT;
		1151	memmove(&msg.contract,new_contract, sizeof(fsf_contract_parameters_t));
		1152	msg.server = server;
910	trimarchi	1153	msg.sig_notify=sig_notify;
		1154	msg.sig_value=sig_value;
		1155	msg.process=exec_shadow;
868	trimarchi	1156
908	trimarchi	1157	port_send(channel[1],&msg,BLOCK);
868	trimarchi	1158
908	trimarchi	1159	port_receive(channel[0], &msg, BLOCK);
868	trimarchi	1160
908	trimarchi	1161	if (msg.server==-1) return FSF_ERR_CONTRACT_REJECTED;
868	trimarchi	1162
		1163	return 0;
		1164	}
		1165
407	giacomo	1166	void print_server_list()
		1167	{
		1168
		1169	int i;
		1170
		1171	kern_printf("Server List\n");
		1172
410	trimarchi	1173	for(i=0;i<current_server;i++) {
407	giacomo	1174
662	giacomo	1175	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	1176
		1177	}
		1178
		1179	}
808	trimarchi	1180
963	trimarchi	1181	int
		1182	fsf_get_remaining_budget
		1183	(fsf_server_id_t server,
		1184	struct timespec *budget) {
		1185	TIME t;
		1186	NULL_TIMESPEC(budget);
		1187	t=SERVER_get_remain_capacity(fsf_server_level, server);
		1188	ADDUSEC2TIMESPEC(t, budget);
		1189	return 0;
		1190
		1191
		1192	}
		1193	/*
		1194	int fsf_get_remaining_budget(fsf_server_id_t server) {
		1195
825	trimarchi	1196	return SERVER_get_remain_capacity(fsf_server_level, server);
808	trimarchi	1197	}
963	trimarchi	1198	*/
868	trimarchi	1199	int fsf_get_budget_and_period
		1200	(fsf_server_id_t server,
		1201	struct timespec *budget,
		1202	struct timespec *period) {
		1203	TIME bg;
		1204	TIME pd;
		1205
		1206	if (!SERVER_getbudgetinfo(fsf_server_level, &bg, &pd, NULL, server)) {
		1207	if (budget) {
		1208	NULL_TIMESPEC(budget);
		1209	ADDUSEC2TIMESPEC(bg, budget);
		1210	}
		1211	if (period) {
		1212	NULL_TIMESPEC(period);
		1213	ADDUSEC2TIMESPEC(pd, period);
		1214	}
		1215
		1216	return 0;
		1217	}
		1218	return FSF_ERR_BAD_ARGUMENT;
		1219	}
		1220
		1221	int
		1222	fsf_set_service_thread_data
		1223	(const struct timespec *budget,
		1224	const struct timespec *period,
		1225	bool *accepted) {
		1226
		1227	if (budget==NULL && period==NULL) return FSF_ERR_BAD_ARGUMENT;
		1228	fsf_set_contract_basic_parameters(&service_contract,budget,period,FSF_DEFAULT_WORKLOAD);
		1229	*accepted = !fsf_renegotiate_contract(&service_contract,service_server)?true:false;
		1230	return 0;
		1231
		1232	}
		1233
		1234
		1235
		1236	int fsf_get_service_thread_data
		1237	(struct timespec *budget,
		1238	struct timespec *period) {
		1239
		1240	return fsf_get_budget_and_period(service_server, budget, period);
		1241
		1242	}
944	trimarchi	1243
		1244	int fsf_init_local_scheduler(fsf_server_id_t server,
		1245	fsf_sched_init_info_t info) {
		1246	int scheduler_id, local_scheduler_level;
		1247
		1248	struct timespec duration=(struct timespec )info;
		1249
		1250	local_scheduler_level=SERVER_get_local_scheduler_level_from_budget(fsf_server_level, server);
		1251	scheduler_id = SERVER_get_local_scheduler_id_from_budget(fsf_server_level,server);
		1252
		1253	if (scheduler_id!=FSF_TABLE_DRIVEN)
		1254	return FSF_ERR_SCHED_POLICY_NOT_COMPATIBLE;
		1255
		1256	if (duration->tv_sec < 0 \|\| duration->tv_nsec > 1000000000)
		1257	return FSF_ERR_BAD_ARGUMENT;
		1258
		1259	//TDSTAR_debugtable(local_scheduler_level);
		1260	TDSTAR_start_simulation(local_scheduler_level);
		1261	return 0;
		1262
		1263	}
963	trimarchi	1264
		1265	int
		1266	fsf_get_total_quality
		1267	(fsf_server_id_t server, int *total_quality) {
		1268
		1269	return 0;
		1270	}
		1271
		1272	int
		1273	fsf_get_available_capacity (
		1274	fsf_server_id_t server, uint32_t *capacity){
		1275
		1276	return 0;
		1277	}
		1278
		1279	bool
		1280	fsf_is_admission_test_enabled() {
		1281	return true;
		1282	}
		1283
		1284
		1285	int
		1286	fsf_get_cpu_time
		1287	(fsf_server_id_t server,
		1288	struct timespec *cpu_time) {
		1289
		1290	return 0;
		1291	}
		1292
		1293
		1294	int
		1295	fsf_get_contract
		1296	(fsf_server_id_t server,
		1297	fsf_contract_parameters_t *contract) {
		1298
		1299	return 0;
		1300	}

Subversion Repositories shark

(root)/shark/trunk/ports/first/first-server.c/ - Rev 975