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ae.c event loop does no longer support exception notifications, as they are fully pointless. Also a theoretical bug that never happens in practice fixed.

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This commit is contained in:
antirez 2010-01-20 13:38:59 -05:00
parent 8e688711a7
commit 621d5c1985
5 changed files with 21 additions and 25 deletions
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18
ae.c
View File

@ -93,7 +93,6 @@ int aeCreateFileEvent(aeEventLoop *eventLoop, int fd, int mask,
fe->mask |= mask;
if (mask & AE_READABLE) fe->rfileProc = proc;
if (mask & AE_WRITABLE) fe->wfileProc = proc;
if (mask & AE_EXCEPTION) fe->efileProc = proc;
fe->clientData = clientData;
if (fd > eventLoop->maxfd)
eventLoop->maxfd = fd;
@ -325,18 +324,19 @@ int aeProcessEvents(aeEventLoop *eventLoop, int flags)
aeFileEvent *fe = &eventLoop->events[eventLoop->fired[j].fd];
int mask = eventLoop->fired[j].mask;
int fd = eventLoop->fired[j].fd;
int rfired = 0;
/* note the fe->mask & mask & ... code: maybe an already processed
* event removed an element that fired and we still didn't
* processed, so we check if the event is still valid. */
if (fe->mask & mask & AE_READABLE)
if (fe->mask & mask & AE_READABLE) {
rfired = 1;
fe->rfileProc(eventLoop,fd,fe->clientData,mask);
if (fe->mask & mask & AE_WRITABLE && fe->wfileProc != fe->rfileProc)
fe->wfileProc(eventLoop,fd,fe->clientData,mask);
if (fe->mask & mask & AE_EXCEPTION &&
fe->efileProc != fe->wfileProc &&
fe->efileProc != fe->rfileProc)
fe->efileProc(eventLoop,fd,fe->clientData,mask);
}
if (fe->mask & mask & AE_WRITABLE) {
if (!rfired || fe->wfileProc != fe->rfileProc)
fe->wfileProc(eventLoop,fd,fe->clientData,mask);
}
processed++;
}
}
@ -362,11 +362,9 @@ int aeWait(int fd, int mask, long long milliseconds) {
if (mask & AE_READABLE) FD_SET(fd,&rfds);
if (mask & AE_WRITABLE) FD_SET(fd,&wfds);
if (mask & AE_EXCEPTION) FD_SET(fd,&efds);
if ((retval = select(fd+1, &rfds, &wfds, &efds, &tv)) > 0) {
if (FD_ISSET(fd,&rfds)) retmask |= AE_READABLE;
if (FD_ISSET(fd,&wfds)) retmask |= AE_WRITABLE;
if (FD_ISSET(fd,&efds)) retmask |= AE_EXCEPTION;
return retmask;
} else {
return retval;

4
ae.h
View File

@ -41,7 +41,6 @@
#define AE_NONE 0
#define AE_READABLE 1
#define AE_WRITABLE 2
#define AE_EXCEPTION 4
#define AE_FILE_EVENTS 1
#define AE_TIME_EVENTS 2
@ -62,10 +61,9 @@ typedef void aeEventFinalizerProc(struct aeEventLoop *eventLoop, void *clientDat
/* File event structure */
typedef struct aeFileEvent {
int mask; /* one of AE_(READABLE|WRITABLE|EXCEPTION) */
int mask; /* one of AE_(READABLE|WRITABLE) */
aeFileProc *rfileProc;
aeFileProc *wfileProc;
aeFileProc *efileProc;
void *clientData;
} aeFileEvent;

3
ae_epoll.c
View File

@ -38,7 +38,6 @@ static int aeApiAddEvent(aeEventLoop *eventLoop, int fd, int mask) {
mask |= eventLoop->events[fd].mask; /* Merge old events */
if (mask & AE_READABLE) ee.events |= EPOLLIN;
if (mask & AE_WRITABLE) ee.events |= EPOLLOUT;
if (mask & AE_EXCEPTION) ee.events |= EPOLLPRI;
ee.data.u64 = 0; /* avoid valgrind warning */
ee.data.fd = fd;
if (epoll_ctl(state->epfd,op,fd,&ee) == -1) return -1;
@ -53,7 +52,6 @@ static void aeApiDelEvent(aeEventLoop *eventLoop, int fd, int delmask) {
ee.events = 0;
if (mask & AE_READABLE) ee.events |= EPOLLIN;
if (mask & AE_WRITABLE) ee.events |= EPOLLOUT;
if (mask & AE_EXCEPTION) ee.events |= EPOLLPRI;
ee.data.u64 = 0; /* avoid valgrind warning */
ee.data.fd = fd;
if (mask != AE_NONE) {
@ -81,7 +79,6 @@ static int aeApiPoll(aeEventLoop *eventLoop, struct timeval *tvp) {
if (e->events & EPOLLIN) mask |= AE_READABLE;
if (e->events & EPOLLOUT) mask |= AE_WRITABLE;
if (e->events & EPOLLPRI) mask |= AE_EXCEPTION;
eventLoop->fired[j].fd = e->data.fd;
eventLoop->fired[j].mask = mask;
}

12
ae_select.c
View File

@ -5,10 +5,10 @@
#include <string.h>
typedef struct aeApiState {
fd_set rfds, wfds, efds;
fd_set rfds, wfds;
/* We need to have a copy of the fd sets as it's not safe to reuse
* FD sets after select(). */
fd_set _rfds, _wfds, _efds;
fd_set _rfds, _wfds;
} aeApiState;
static int aeApiCreate(aeEventLoop *eventLoop) {
@ -17,7 +17,6 @@ static int aeApiCreate(aeEventLoop *eventLoop) {
if (!state) return -1;
FD_ZERO(&state->rfds);
FD_ZERO(&state->wfds);
FD_ZERO(&state->efds);
eventLoop->apidata = state;
return 0;
}
@ -31,7 +30,6 @@ static int aeApiAddEvent(aeEventLoop *eventLoop, int fd, int mask) {
if (mask & AE_READABLE) FD_SET(fd,&state->rfds);
if (mask & AE_WRITABLE) FD_SET(fd,&state->wfds);
if (mask & AE_EXCEPTION) FD_SET(fd,&state->efds);
return 0;
}
@ -40,7 +38,6 @@ static void aeApiDelEvent(aeEventLoop *eventLoop, int fd, int mask) {
if (mask & AE_READABLE) FD_CLR(fd,&state->rfds);
if (mask & AE_WRITABLE) FD_CLR(fd,&state->wfds);
if (mask & AE_EXCEPTION) FD_CLR(fd,&state->efds);
}
static int aeApiPoll(aeEventLoop *eventLoop, struct timeval *tvp) {
@ -49,10 +46,9 @@ static int aeApiPoll(aeEventLoop *eventLoop, struct timeval *tvp) {
memcpy(&state->_rfds,&state->rfds,sizeof(fd_set));
memcpy(&state->_wfds,&state->wfds,sizeof(fd_set));
memcpy(&state->_efds,&state->efds,sizeof(fd_set));
retval = select(eventLoop->maxfd+1,
&state->_rfds,&state->_wfds,&state->_efds,tvp);
&state->_rfds,&state->_wfds,NULL,tvp);
if (retval > 0) {
for (j = 0; j <= eventLoop->maxfd; j++) {
int mask = 0;
@ -63,8 +59,6 @@ static int aeApiPoll(aeEventLoop *eventLoop, struct timeval *tvp) {
mask |= AE_READABLE;
if (fe->mask & AE_WRITABLE && FD_ISSET(j,&state->_wfds))
mask |= AE_WRITABLE;
if (fe->mask & AE_EXCEPTION && FD_ISSET(j,&state->_efds))
mask |= AE_EXCEPTION;
eventLoop->fired[numevents].fd = j;
eventLoop->fired[numevents].mask = mask;
numevents++;

9
redis-cli.c
View File

@ -134,6 +134,7 @@ static struct redisCommand cmdTable[] = {
{"debug",-2,REDIS_CMD_INLINE},
{"mset",-3,REDIS_CMD_MULTIBULK},
{"msetnx",-3,REDIS_CMD_MULTIBULK},
{"monitor",1,REDIS_CMD_INLINE},
{NULL,0,0}
};
@ -188,6 +189,7 @@ static int cliReadSingleLineReply(int fd, int quiet) {
if (reply == NULL) return 1;
if (!quiet)
printf("%s\n", reply);
sdsfree(reply);
return 0;
}
@ -287,6 +289,7 @@ static int selectDb(int fd)
static int cliSendCommand(int argc, char **argv) {
struct redisCommand *rc = lookupCommand(argv[0]);
int fd, j, retval = 0;
int read_forever = 0;
sds cmd;
if (!rc) {
@ -299,6 +302,7 @@ static int cliSendCommand(int argc, char **argv) {
fprintf(stderr,"Wrong number of arguments for '%s'\n",rc->name);
return 1;
}
if (!strcasecmp(rc->name,"monitor")) read_forever = 1;
if ((fd = cliConnect()) == -1) return 1;
/* Select db number */
@ -337,6 +341,11 @@ static int cliSendCommand(int argc, char **argv) {
}
anetWrite(fd,cmd,sdslen(cmd));
sdsfree(cmd);
while (read_forever) {
cliReadSingleLineReply(fd,0);
}
retval = cliReadReply(fd);
if (retval) {
close(fd);