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#include <gc/server.h>
#include <gm/method.h>
#include <gc/mem.h>
#include <gc/shm.h>
Server procServer;
static Server* servers = 0;
static method_handler getHandler(Server *o, uint32_t m);
static struct method_ret checkIfHandles(struct method_data *d);
static struct method_ret checkIfHandlesMany(struct method_data *d);
void objsrv_init() {
procServer.id = 0;
procServer.methods = 0;
procServer.next = 0;
procServer.data = 0;
servers = &procServer;
srv_addHandler(&procServer, M_HANDLECHECK_BIVV, checkIfHandles);
srv_addHandler(&procServer, M_HANDLECHECK_BMIV, checkIfHandlesMany);
}
void srv_handleAll() {
Server *i = servers;
while (i) {
srv_handle(i, HA_ONCE);
i = i->next;
}
}
void srv_handle(Server *o, int act) {
int i;
if (act == HA_LOOP) {
while (1) srv_handle(o, HA_WAIT);
} else {
struct user_request rq;
int v = request_get(o->id, &rq, (act == HA_WAIT));
if (v == 0) {
method_handler m = getHandler(o, rq.func);
if (m == 0) {
if (rq.isBlocking) {
request_answer(o->id, 0, 0, ME_UNHANDLED);
}
} else {
struct method_data md;
md.func = rq.func;
md.blocking = rq.isBlocking;
md.obj = o;
md.pid = rq.pid;
//get parameters
for (i = 0; i < 3; i++) {
md.parameters[i].type = (rq.func >> (28 - (2 * i))) & 3;
switch (md.parameters[i].type) {
case PT_LONG:
case PT_OBJDESC:
md.parameters[i].i = rq.params[i];
break;
case PT_SHM: //all the fuss about keepShm only applies to messages.
md.parameters[i].keepShm = 1; //if local memory or if nothing, do not unmap it
md.parameters[i].shmsize = rq.shmsize[i];
if (rq.params[i] == 0) { //TODO : map shm (shm manager) !!!
void* p = shm_alloc(rq.shmsize[i]);
md.parameters[i].p = p;
if (p != 0) {
request_mapShm(o->id, (size_t)p, i);
md.parameters[i].keepShm = 0; //we had to map it, so mark it to be unmapped
}
} else {
md.parameters[i].p = (void*)rq.params[i];
}
break;
}
}
struct method_ret ret = m(&md); //Call method
if (rq.isBlocking) {
uint32_t a = 0, b = 0;
if (ret.type == PT_OBJDESC || ret.type == PT_LONG) a = ret.i;
if (ret.type == PT_LONGLONG) a = (uint32_t)ret.l, b = (uint32_t)((uint64_t)ret.l >> 32);
request_answer(o->id, a, b, ret.status);
for (i = 0; i < 3; i++) {
if (md.parameters[i].type == PT_SHM && md.parameters[i].p != 0) {
shm_free(md.parameters[i].p);
}
}
} else {
for (i = 0; i < 3; i++) {
if (md.parameters[i].type == PT_SHM && md.parameters[i].keepShm == 0) {
shm_freeDel(md.parameters[i].p);
}
}
}
}
}
}
}
void srv_addHandler(Server* o, uint32_t method, method_handler h) {
struct method_srv *s = malloc(sizeof(struct method_srv));
s->id = method;
s->h = h;
s->next = o->methods;
o->methods = s;
}
Server *srv_create() {
Server *s = malloc(sizeof(Server));
s->id = object_create();
s->methods = 0;
s->data = 0;
s->next = servers;
srv_addHandler(s, M_HANDLECHECK_BIVV, checkIfHandles);
srv_addHandler(s, M_HANDLECHECK_BMIV, checkIfHandlesMany);
servers = s;
return s;
}
Server *srv_get(int descriptor) {
Server *s = servers;
while (s) {
if (s->id == descriptor) return s;
s = s->next;
}
return 0;
}
void srv_delete(Server* s) {
//remove s from servers
if (servers == s) {
servers = s->next;
} else {
Server *i = servers;
while (i->next != 0) {
if (i->next == s) {
i->next = s->next;
break;
}
i = i->next;
}
}
//close s
object_close(s->id);
//free methods for s
while (s->methods != 0) {
struct method_srv *m = s->methods->next;
free(s->methods);
s->methods = m;
}
//free s
free(s);
}
// internal use
method_handler getHandler(Server *o, uint32_t m) {
struct method_srv *i = o->methods;
while (i) {
if (i->id == m) return i->h;
i = i->next;
}
return 0;
}
struct method_ret checkIfHandles(struct method_data *d) {
if (getHandler(d->obj, d->parameters[0].i) == 0) {
return mr_long(0);
}
return mr_long(1);
}
struct method_ret checkIfHandlesMany(struct method_data *d) {
if (d->parameters[0].type != PT_SHM) return mr_err(-1);
if (d->parameters[1].type != PT_LONG) return mr_err(-1);
uint32_t *data = d->parameters[0].p, i;
if (data == 0) return mr_long(0);
for (i = 0; i < d->parameters[1].i; i++) {
if (getHandler(d->obj, data[i]) == 0) return mr_long(0);
}
return mr_long(1);
}
// ***************************** HELPER FUNCTIONS FOR RETRUN VALUES
struct method_ret mr_long(int val) {
struct method_ret r; r.status = 0; r.type = PT_LONG; r.i = val;
return r;
}
struct method_ret mr_llong(int64_t val) {
struct method_ret r; r.status = 0; r.type = PT_LONGLONG; r.l = val;
return r;
}
struct method_ret mr_obj(Object obj) {
struct method_ret r; r.status = 0; r.type = PT_OBJDESC; r.i = obj;
return r;
}
struct method_ret mr_srv(Server* obj) {
struct method_ret r; r.status = 0; r.type = PT_OBJDESC; r.i = obj->id;
return r;
}
struct method_ret mr_void() {
struct method_ret r; r.status = 0; r.type = PT_VOID;
return r;
}
struct method_ret mr_err(int error) {
struct method_ret r; r.status = error; r.type = PT_VOID; r.l = 0;
return r;
}
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