int
put1(Map *map, uvlong addr, uchar *v, int size)
{
if (!map) {
werrstr("put1: invalid map");
return -1;
}
return mput(map, addr, v, size);
}
int
put1(Map *map, uint64_t addr, uint8_t *v, int size)
{
if (!map) {
werrstr("put1: invalid map");
return -1;
}
return mput(map, addr, v, size);
}
int
put2(Map *map, uint64_t addr, uint16_t v)
{
if (!map) {
werrstr("put2: invalid map");
return -1;
}
v = machdata->swab(v);
return mput(map, addr, &v, 2);
}
int
put4(Map *map, uint64_t addr, uint32_t v)
{
if (!map) {
werrstr("put4: invalid map");
return -1;
}
v = machdata->swal(v);
return mput(map, addr, &v, 4);
}
int
put8(Map *map, uint64_t addr, uint64_t v)
{
if (!map) {
werrstr("put8: invalid map");
return -1;
}
v = machdata->swav(v);
return mput(map, addr, &v, 8);
}
int
put2(Map *map, uvlong addr, ushort v)
{
if (!map) {
werrstr("put2: invalid map");
return -1;
}
v = machdata->swab(v);
return mput(map, addr, &v, 2);
}
// Get the next goroutine that m should run.
// Sched must be locked on entry, is unlocked on exit.
// Makes sure that at most $GOMAXPROCS gs are
// running on cpus (not in system calls) at any given time.
static G*
nextgandunlock(void)
{
G *gp;
if(runtime·sched.mcpu < 0)
runtime·throw("negative runtime·sched.mcpu");
// If there is a g waiting as m->nextg,
// mnextg took care of the runtime·sched.mcpu++.
if(m->nextg != nil) {
gp = m->nextg;
m->nextg = nil;
schedunlock();
return gp;
}
if(m->lockedg != nil) {
// We can only run one g, and it's not available.
// Make sure some other cpu is running to handle
// the ordinary run queue.
if(runtime·sched.gwait != 0)
matchmg();
} else {
// Look for work on global queue.
while(runtime·sched.mcpu < runtime·sched.mcpumax && (gp=gget()) != nil) {
if(gp->lockedm) {
mnextg(gp->lockedm, gp);
continue;
}
runtime·sched.mcpu++; // this m will run gp
schedunlock();
return gp;
}
// Otherwise, wait on global m queue.
mput(m);
}
if(runtime·sched.mcpu == 0 && runtime·sched.msyscall == 0)
runtime·throw("all goroutines are asleep - deadlock!");
m->nextg = nil;
m->waitnextg = 1;
runtime·noteclear(&m->havenextg);
if(runtime·sched.waitstop && runtime·sched.mcpu <= runtime·sched.mcpumax) {
runtime·sched.waitstop = 0;
runtime·notewakeup(&runtime·sched.stopped);
}
schedunlock();
runtime·notesleep(&m->havenextg);
if((gp = m->nextg) == nil)
runtime·throw("bad m->nextg in nextgoroutine");
m->nextg = nil;
return gp;
}
// Get the next goroutine that m should run.
// Sched must be locked on entry, is unlocked on exit.
// Makes sure that at most $GOMAXPROCS g's are
// running on cpus (not in system calls) at any given time.
static G*
nextgandunlock(void)
{
G *gp;
uint32 v;
top:
if(atomic_mcpu(runtime·sched.atomic) >= maxgomaxprocs)
runtime·throw("negative mcpu");
// If there is a g waiting as m->nextg, the mcpu++
// happened before it was passed to mnextg.
if(m->nextg != nil) {
gp = m->nextg;
m->nextg = nil;
schedunlock();
return gp;
}
if(m->lockedg != nil) {
// We can only run one g, and it's not available.
// Make sure some other cpu is running to handle
// the ordinary run queue.
if(runtime·sched.gwait != 0) {
matchmg();
// m->lockedg might have been on the queue.
if(m->nextg != nil) {
gp = m->nextg;
m->nextg = nil;
schedunlock();
return gp;
}
}
} else {
// Look for work on global queue.
while(haveg() && canaddmcpu()) {
gp = gget();
if(gp == nil)
runtime·throw("gget inconsistency");
if(gp->lockedm) {
mnextg(gp->lockedm, gp);
continue;
}
runtime·sched.grunning++;
schedunlock();
return gp;
}
// The while loop ended either because the g queue is empty
// or because we have maxed out our m procs running go
// code (mcpu >= mcpumax). We need to check that
// concurrent actions by entersyscall/exitsyscall cannot
// invalidate the decision to end the loop.
//
// We hold the sched lock, so no one else is manipulating the
// g queue or changing mcpumax. Entersyscall can decrement
// mcpu, but if does so when there is something on the g queue,
// the gwait bit will be set, so entersyscall will take the slow path
// and use the sched lock. So it cannot invalidate our decision.
//
// Wait on global m queue.
mput(m);
}
// Look for deadlock situation.
// There is a race with the scavenger that causes false negatives:
// if the scavenger is just starting, then we have
// scvg != nil && grunning == 0 && gwait == 0
// and we do not detect a deadlock. It is possible that we should
// add that case to the if statement here, but it is too close to Go 1
// to make such a subtle change. Instead, we work around the
// false negative in trivial programs by calling runtime.gosched
// from the main goroutine just before main.main.
// See runtime·main above.
//
// On a related note, it is also possible that the scvg == nil case is
// wrong and should include gwait, but that does not happen in
// standard Go programs, which all start the scavenger.
//
if((scvg == nil && runtime·sched.grunning == 0) ||
(scvg != nil && runtime·sched.grunning == 1 && runtime·sched.gwait == 0 &&
(scvg->status == Grunning || scvg->status == Gsyscall))) {
runtime·throw("all goroutines are asleep - deadlock!");
}
m->nextg = nil;
m->waitnextg = 1;
runtime·noteclear(&m->havenextg);
// Stoptheworld is waiting for all but its cpu to go to stop.
// Entersyscall might have decremented mcpu too, but if so
// it will see the waitstop and take the slow path.
// Exitsyscall never increments mcpu beyond mcpumax.
v = runtime·atomicload(&runtime·sched.atomic);
if(atomic_waitstop(v) && atomic_mcpu(v) <= atomic_mcpumax(v)) {
// set waitstop = 0 (known to be 1)
runtime·xadd(&runtime·sched.atomic, -1<<waitstopShift);
runtime·notewakeup(&runtime·sched.stopped);
}
schedunlock();
runtime·notesleep(&m->havenextg);
if(m->helpgc) {
runtime·gchelper();
m->helpgc = 0;
runtime·lock(&runtime·sched);
goto top;
}
if((gp = m->nextg) == nil)
runtime·throw("bad m->nextg in nextgoroutine");
m->nextg = nil;
return gp;
}
int main(int argc, char *argv[]){
char buff[N], *param; //1024
int j = 0, nb;
if( argc != 2){
printf("Usage: %s <server host>\n", argv[0]);
exit(1);
}
printf("commands\n");
do{
memset(buff, '\0', N);
prompt();
gets(buff);
param = strchr(buff,' '); // param <- commands
if (param) {
*param=0;
param++;
}
for(j = 0; j < NB_CMDS; j++)
if( !strcmp(buff, commandes[j]))
break;
switch(j){
case(OPEN): if(connection) printf("already connected\n");
else myconnect(argv[1]);
break;
case(GET): if(!connection) printf("Not connected!\n");
else get(param);
break;
case(PUT): if(!connection) printf("Not connected!\n");
else put(param);
break;
case(MGET): if(!connection) printf("Not connected!\n");
else mget(param);
break;
case(MPUT): if(!connection) printf("Not connected!\n");
else mput(param);
break;
case(CD): if(!connection) printf("NoT connecteD!\n");
else cd(param);
break;
case(LCD): lcd(param);
break;
case(MGET_): if(!connection) printf("Not connected!\n");
else mget_(param);
break;
case(MPUT_): if(!connection) printf("Not connected!\n");
else mput_(param);
break;
case(DIR): if(!connection) printf("Not connecte!\n");
else dir();
break;
case(LDIR):
ldir();
break;
case(RGET): if(!connection) printf("Not connected!\n");
else rget(param);
break;
case(RPUT): if(!connection) printf("Not connected!\n");
else rput(param);
break;
//case (HELP): aide();
// break;
default: printf("%s command invalid\n", buff);
printf("Commands are as follows\n");
printf(" get : To Get A file from Server\n");
printf(" put : To Put A file to Server\n");
printf(" cd : change Server's Current Directory\n");
printf(" lcd : Change Client's current Directory\n");
printf(" mget : To Get multiple files from Server\n");
printf(" mput : To put multiple files from Server\n");
printf(" dir : List the Server's current Directory\n");
printf(" ldir : List the Client's current Directory\n");
printf(" mget_ : Put files with wildcard support\n");
printf("mput_ : get files with wildcard support\n");
printf("rget : Get a directory recursively\n");
printf("rput : Put a Directory recursiovely\n");
break;
}
}
while(1);
return(0);
}
// Get the next goroutine that m should run.
// Sched must be locked on entry, is unlocked on exit.
// Makes sure that at most $GOMAXPROCS g's are
// running on cpus (not in system calls) at any given time.
static G*
nextgandunlock(void)
{
G *gp;
uint32 v;
top:
if(atomic_mcpu(runtime_sched.atomic) >= maxgomaxprocs)
runtime_throw("negative mcpu");
// If there is a g waiting as m->nextg, the mcpu++
// happened before it was passed to mnextg.
if(m->nextg != nil) {
gp = m->nextg;
m->nextg = nil;
schedunlock();
return gp;
}
if(m->lockedg != nil) {
// We can only run one g, and it's not available.
// Make sure some other cpu is running to handle
// the ordinary run queue.
if(runtime_sched.gwait != 0) {
matchmg();
// m->lockedg might have been on the queue.
if(m->nextg != nil) {
gp = m->nextg;
m->nextg = nil;
schedunlock();
return gp;
}
}
} else {
// Look for work on global queue.
while(haveg() && canaddmcpu()) {
gp = gget();
if(gp == nil)
runtime_throw("gget inconsistency");
if(gp->lockedm) {
mnextg(gp->lockedm, gp);
continue;
}
runtime_sched.grunning++;
schedunlock();
return gp;
}
// The while loop ended either because the g queue is empty
// or because we have maxed out our m procs running go
// code (mcpu >= mcpumax). We need to check that
// concurrent actions by entersyscall/exitsyscall cannot
// invalidate the decision to end the loop.
//
// We hold the sched lock, so no one else is manipulating the
// g queue or changing mcpumax. Entersyscall can decrement
// mcpu, but if does so when there is something on the g queue,
// the gwait bit will be set, so entersyscall will take the slow path
// and use the sched lock. So it cannot invalidate our decision.
//
// Wait on global m queue.
mput(m);
}
v = runtime_atomicload(&runtime_sched.atomic);
if(runtime_sched.grunning == 0)
runtime_throw("all goroutines are asleep - deadlock!");
m->nextg = nil;
m->waitnextg = 1;
runtime_noteclear(&m->havenextg);
// Stoptheworld is waiting for all but its cpu to go to stop.
// Entersyscall might have decremented mcpu too, but if so
// it will see the waitstop and take the slow path.
// Exitsyscall never increments mcpu beyond mcpumax.
if(atomic_waitstop(v) && atomic_mcpu(v) <= atomic_mcpumax(v)) {
// set waitstop = 0 (known to be 1)
runtime_xadd(&runtime_sched.atomic, -1<<waitstopShift);
runtime_notewakeup(&runtime_sched.stopped);
}
schedunlock();
runtime_notesleep(&m->havenextg);
if(m->helpgc) {
runtime_gchelper();
m->helpgc = 0;
runtime_lock(&runtime_sched);
goto top;
}
if((gp = m->nextg) == nil)
runtime_throw("bad m->nextg in nextgoroutine");
m->nextg = nil;
return gp;
}
