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Code Issues Wiki

Remove out-of-fd-handling.

This commit is contained in:
Stefan Bühler 2009-01-04 23:14:08 +01:00
parent 5feea39ae6
commit d9ddd4fd3d
12 changed files with 23 additions and 45 deletions
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4
include/lighttpd/chunk.h
View File

@ -59,7 +59,7 @@ struct chunkiter {
******************/
/* open the file cf->name if it is not already opened for reading
* may return HANDLER_GO_ON, HANDLER_ERROR, HANDLER_WAIT_FOR_FD
* may return HANDLER_GO_ON, HANDLER_ERROR
*/
LI_API handler_t chunkfile_open(struct vrequest *vr, chunkfile *cf);
@ -75,7 +75,7 @@ INLINE goffset chunkiter_length(chunkiter iter);
* but needs to do io in case of FILE_CHUNK; it tries mmap and
* falls back to read(...)
* the data is _not_ marked as "done"
* may return HANDLER_GO_ON, HANDLER_ERROR, HANDLER_WAIT_FOR_FD
* may return HANDLER_GO_ON, HANDLER_ERROR
*/
LI_API handler_t chunkiter_read(struct vrequest *vr, chunkiter iter, off_t start, off_t length, char **data_start, off_t *data_len);

3
include/lighttpd/network.h
View File

@ -15,8 +15,7 @@ typedef enum {
NETWORK_STATUS_CONNECTION_CLOSE,
NETWORK_STATUS_WAIT_FOR_EVENT, /**< read/write returned -1 with errno=EAGAIN/EWOULDBLOCK; no real IO was done
internal: some io may be done */
NETWORK_STATUS_WAIT_FOR_AIO_EVENT, /**< nothing done yet, read/write will be done somewhere else */
NETWORK_STATUS_WAIT_FOR_FD, /**< need a fd to open a file */
NETWORK_STATUS_WAIT_FOR_AIO_EVENT /**< nothing done yet, read/write will be done somewhere else */
} network_status_t;
/** repeats write after EINTR */

4
include/lighttpd/server.h
View File

@ -90,6 +90,8 @@ LI_API void server_stop(server *srv);
/* exit asap with cleanup */
LI_API void server_exit(server *srv);
GString *server_current_timestamp();
LI_API GString *server_current_timestamp();
LI_API void server_out_of_fds(server *srv);
#endif

3
include/lighttpd/typedefs.h
View File

@ -10,8 +10,7 @@ typedef enum {
HANDLER_GO_ON,
HANDLER_COMEBACK,
HANDLER_WAIT_FOR_EVENT,
HANDLER_ERROR,
HANDLER_WAIT_FOR_FD
HANDLER_ERROR
} handler_t;
/* structs from headers, in alphabetic order */

4
src/actions.c
View File

@ -219,7 +219,6 @@ handler_t action_execute(vrequest *vr) {
action_stack_reset(vr, as);
case HANDLER_COMEBACK:
case HANDLER_WAIT_FOR_EVENT:
case HANDLER_WAIT_FOR_FD:
return res;
}
continue;
@ -254,7 +253,6 @@ handler_t action_execute(vrequest *vr) {
action_stack_reset(vr, as);
case HANDLER_COMEBACK:
case HANDLER_WAIT_FOR_EVENT:
case HANDLER_WAIT_FOR_FD:
return res;
}
break;
@ -275,7 +273,6 @@ handler_t action_execute(vrequest *vr) {
action_stack_reset(vr, as);
case HANDLER_COMEBACK:
case HANDLER_WAIT_FOR_EVENT:
case HANDLER_WAIT_FOR_FD:
return res;
}
break;
@ -297,7 +294,6 @@ handler_t action_execute(vrequest *vr) {
action_stack_reset(vr, as);
case HANDLER_COMEBACK:
case HANDLER_WAIT_FOR_EVENT:
case HANDLER_WAIT_FOR_FD:
return res;
}
break;

8
src/chunk.c
View File

@ -41,7 +41,7 @@ static void chunkfile_release(chunkfile *cf) {
}
/* open the file cf->name if it is not already opened for reading
* may return HANDLER_GO_ON, HANDLER_ERROR, HANDLER_WAIT_FOR_FD
* may return HANDLER_GO_ON, HANDLER_ERROR
*/
handler_t chunkfile_open(vrequest *vr, chunkfile *cf) {
if (!cf) return HANDLER_ERROR;
@ -51,7 +51,9 @@ handler_t chunkfile_open(vrequest *vr, chunkfile *cf) {
return HANDLER_ERROR;
}
if (-1 == (cf->fd = open(cf->name->str, O_RDONLY))) {
if (EMFILE == errno) return HANDLER_WAIT_FOR_FD;
if (EMFILE == errno) {
server_out_of_fds(vr->con->srv);
}
VR_ERROR(vr, "Couldn't open file '%s': %s", GSTR_SAFE_STR(cf->name), g_strerror(errno));
return HANDLER_ERROR;
}
@ -81,7 +83,7 @@ handler_t chunkfile_open(vrequest *vr, chunkfile *cf) {
* but needs to do io in case of FILE_CHUNK; it tries mmap and
* falls back to read(...)
* the data is _not_ marked as "done"
* may return HANDLER_GO_ON, HANDLER_ERROR, HANDLER_WAIT_FOR_FD
* may return HANDLER_GO_ON, HANDLER_ERROR
*/
handler_t chunkiter_read(vrequest *vr, chunkiter iter, off_t start, off_t length, char **data_start, off_t *data_len) {
chunk *c = chunkiter_chunk(iter);

10
src/connection.c
View File

@ -156,7 +156,6 @@ static gboolean connection_handle_read(connection *con) {
return TRUE;
case HANDLER_ERROR:
case HANDLER_COMEBACK: /* unexpected */
case HANDLER_WAIT_FOR_FD: /* unexpected */
/* unparsable header */
connection_error(con);
return FALSE;
@ -211,10 +210,6 @@ static void connection_cb(struct ev_loop *loop, ev_io *w, int revents) {
/* TODO: aio */
ev_io_rem_events(loop, w, EV_READ);
break;
case NETWORK_STATUS_WAIT_FOR_FD:
/* TODO: wait for fd */
ev_io_rem_events(loop, w, EV_READ);
break;
}
}
}
@ -239,11 +234,6 @@ static void connection_cb(struct ev_loop *loop, ev_io *w, int revents) {
_ERROR(con->srv, con->mainvr, "%s", "TODO: wait for aio");
/* TODO: aio */
break;
case NETWORK_STATUS_WAIT_FOR_FD:
ev_io_rem_events(loop, w, EV_WRITE);
_ERROR(con->srv, con->mainvr, "%s", "TODO: wait for fd");
/* TODO: wait for fd */
break;
}
} else {
_DEBUG(con->srv, con->mainvr, "%s", "write event for empty queue");

16
src/modules/mod_fastcgi.c
View File

@ -461,10 +461,6 @@ static void fastcgi_fd_cb(struct ev_loop *loop, ev_io *w, int revents) {
/* TODO: aio */
ev_io_rem_events(loop, w, EV_READ);
break;
case NETWORK_STATUS_WAIT_FOR_FD:
/* TODO: wait for fd */
ev_io_rem_events(loop, w, EV_READ);
break;
}
}
}
@ -490,10 +486,6 @@ static void fastcgi_fd_cb(struct ev_loop *loop, ev_io *w, int revents) {
ev_io_rem_events(loop, w, EV_WRITE);
/* TODO: aio */
break;
case NETWORK_STATUS_WAIT_FOR_FD:
ev_io_rem_events(loop, w, EV_WRITE);
/* TODO: wait for fd */
break;
}
}
if (fcon->fcgi_out->length == 0) {
@ -533,10 +525,12 @@ static handler_t fastcgi_statemachine(vrequest *vr, fastcgi_connection *fcon) {
/* fall through */
case FS_CONNECT:
fcon->fd = socket(fcon->ctx->socket.addr->plain.sa_family, SOCK_STREAM, 0);
do {
fcon->fd = socket(fcon->ctx->socket.addr->plain.sa_family, SOCK_STREAM, 0);
} while (-1 == fcon->fd && errno == EINTR);
if (-1 == fcon->fd) {
if (errno == EMFILE || errno == EINTR) {
return HANDLER_WAIT_FOR_FD;
if (errno == EMFILE) {
server_out_of_fds(vr->con->srv);
}
VR_ERROR(vr, "Couldn't open socket: %s", g_strerror(errno));
return HANDLER_ERROR;

2
src/network_sendfile.c
View File

@ -170,8 +170,6 @@ static network_status_t network_backend_sendfile(vrequest *vr, int fd, chunkqueu
switch (chunkfile_open(vr, c->file.file)) {
case HANDLER_GO_ON:
break;
case HANDLER_WAIT_FOR_FD:
return NETWORK_STATUS_WAIT_FOR_FD;
default:
return NETWORK_STATUS_FATAL_ERROR;
}

2
src/network_write.c
View File

@ -17,8 +17,6 @@ network_status_t network_backend_write(vrequest *vr, int fd, chunkqueue *cq, gof
switch (chunkiter_read(vr, ci, 0, blocksize, &block_data, &block_len)) {
case HANDLER_GO_ON:
break;
case HANDLER_WAIT_FOR_FD:
return did_write_something ? NETWORK_STATUS_SUCCESS : NETWORK_STATUS_WAIT_FOR_FD;
case HANDLER_ERROR:
default:
return NETWORK_STATUS_FATAL_ERROR;

7
src/server.c
View File

@ -230,7 +230,8 @@ static void server_listen_cb(struct ev_loop *loop, ev_io *w, int revents) {
break;
case EMFILE: /* we are out of FDs */
/* TODO: server_out_of_fds(srv, NULL); */
server_out_of_fds(srv);
/* TODO: disable accept callbacks? */
break;
default:
ERROR(srv, "accept failed on fd=%d with error: %s", w->fd, g_strerror(errno));
@ -355,3 +356,7 @@ GString *server_current_timestamp() {
return ts_str;
}
void server_out_of_fds(server *srv) {
ERROR(srv, "%s", "Too many open files. Either raise your fd limit or use a lower connection limit.");
}

5
src/virtualrequest.c
View File

@ -212,7 +212,6 @@ static gboolean vrequest_do_handle_actions(vrequest *vr) {
case HANDLER_COMEBACK:
vrequest_joblist_append(vr); /* come back later */
return FALSE;
case HANDLER_WAIT_FOR_FD: /* TODO: wait for fd */
case HANDLER_WAIT_FOR_EVENT:
return FALSE;
case HANDLER_ERROR:
@ -235,7 +234,6 @@ static gboolean vrequest_do_handle_read(vrequest *vr) {
case HANDLER_COMEBACK:
vrequest_joblist_append(vr); /* come back later */
return FALSE;
case HANDLER_WAIT_FOR_FD: /* TODO: wait for fd */
case HANDLER_WAIT_FOR_EVENT:
return FALSE;
case HANDLER_ERROR:
@ -260,7 +258,6 @@ static gboolean vrequest_do_handle_write(vrequest *vr) {
case HANDLER_COMEBACK:
vrequest_joblist_append(vr); /* come back later */
return FALSE;
case HANDLER_WAIT_FOR_FD: /* TODO: wait for fd */
case HANDLER_WAIT_FOR_EVENT:
return FALSE;
case HANDLER_ERROR:
@ -297,7 +294,6 @@ void vrequest_state_machine(vrequest *vr) {
vrequest_joblist_append(vr); /* come back later */
done = TRUE;
break;
case HANDLER_WAIT_FOR_FD: /* TODO: wait for fd */
case HANDLER_WAIT_FOR_EVENT:
done = (vr->state == VRS_HANDLE_REQUEST_HEADERS);
break;
@ -323,7 +319,6 @@ void vrequest_state_machine(vrequest *vr) {
vrequest_joblist_append(vr); /* come back later */
done = TRUE;
break;
case HANDLER_WAIT_FOR_FD: /* TODO: wait for fd */
case HANDLER_WAIT_FOR_EVENT:
done = (vr->state == VRS_HANDLE_REQUEST_HEADERS);
break;