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webfs: faster shutdown using postnote()

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when the 9p end is closed, post a note to our private note
group to shoot down http procs. this results in quicker
release of namespace resources.
This commit is contained in:
cinap_lenrek 2016-02-08 19:35:26 +01:00
parent 302fc26fdd
commit 3d20565a78
2 changed files with 13 additions and 5 deletions
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10
sys/src/cmd/webfs/fs.c
View file

@ -756,6 +756,13 @@ fsstart(Srv*)
unmount(nil, mtpt);
}
static void
fsend(Srv*)
{
postnote(PNGROUP, getpid(), "shutdown");
exits(nil);
}
Srv fs =
{
.start=fsstart,
@ -768,6 +775,7 @@ Srv fs =
.write=fswrite,
.flush=fsflush,
.destroyfid=fsdestroyfid,
.end=fsend,
};
void
@ -832,5 +840,5 @@ main(int argc, char *argv[])
}
postmountsrv(&fs, service, mtpt, MREPL);
exits(0);
exits(nil);
}

8
sys/src/cmd/webfs/http.c
View file

@ -240,7 +240,7 @@ hclose(Hconn *h)
/* free the tail */
hcloseall(x);
} while(i);
exits(0);
exits(nil);
}
return;
}
@ -492,7 +492,7 @@ Again:
static void
catch(void *, char *msg)
{
if(strstr("alarm", msg) || strstr("die", msg))
if(strstr("alarm", msg) != nil)
noted(NCONT);
else
noted(NDFLT);
@ -710,7 +710,7 @@ http(char *m, Url *u, Key *shdr, Buq *qbody, Buq *qpost)
}else
h->keep = 0;
if(pid == 0)
exits(0);
exits(nil);
}
/* no timeout when posting */
alarm(0);
@ -1000,5 +1000,5 @@ http(char *m, Url *u, Key *shdr, Buq *qbody, Buq *qpost)
shdr = k->next;
free(k);
}
exits(0);
exits(nil);
}