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[CLEANUP] sepoll: clean up the fd_clr/fd_set functions

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This cleanup also slightly reduces code size due to a better
construct and the use of an inlined version of alloc_spec_entry().
This commit is contained in:
Willy Tarreau 2009-10-17 21:43:03 +02:00
parent 7859991dd7
commit ff9d5ba721
1 changed files with 12 additions and 22 deletions
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34
src/ev_sepoll.c
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@ -173,9 +173,10 @@ static int epoll_fd;
static struct epoll_event ev;
REGPRM1 static void alloc_spec_entry(const int fd)
REGPRM1 static inline void alloc_spec_entry(const int fd)
{
if (fd_list[fd].s1)
/* sometimes the entry already exists for the other direction */
return;
fd_list[fd].s1 = nbspec + 1;
spec_list[nbspec] = fd;
@ -231,7 +232,6 @@ REGPRM2 static int __fd_is_set(const int fd, int dir)
*/
REGPRM2 static int __fd_set(const int fd, int dir)
{
__label__ switch_state;
unsigned int i;
#if DEBUG_DEV
@ -242,25 +242,19 @@ REGPRM2 static int __fd_set(const int fd, int dir)
#endif
i = ((unsigned)fd_list[fd].e >> dir) & FD_EV_MASK_DIR;
if (i == FD_EV_IDLE) {
if (i != FD_EV_STOP) {
if (unlikely(i != FD_EV_IDLE))
return 0;
// switch to SPEC state and allocate a SPEC entry.
fd_created++;
alloc_spec_entry(fd);
switch_state:
fd_list[fd].e ^= (unsigned int)(FD_EV_IN_SL << dir);
return 1;
}
else if (i == FD_EV_STOP) {
// switch to WAIT state
goto switch_state;
}
else
return 0;
fd_list[fd].e ^= (unsigned int)(FD_EV_IN_SL << dir);
return 1;
}
REGPRM2 static int __fd_clr(const int fd, int dir)
{
__label__ switch_state;
unsigned int i;
#if DEBUG_DEV
@ -271,22 +265,18 @@ REGPRM2 static int __fd_clr(const int fd, int dir)
#endif
i = ((unsigned)fd_list[fd].e >> dir) & FD_EV_MASK_DIR;
if (i == FD_EV_SPEC) {
// switch to IDLE state
goto switch_state;
}
else if (likely(i == FD_EV_WAIT)) {
if (i != FD_EV_SPEC) {
if (unlikely(i != FD_EV_WAIT))
return 0;
// switch to STOP state
/* We will create a queue entry for this one because we want to
* process it later in order to merge it with other events on
* the same FD.
*/
alloc_spec_entry(fd);
switch_state:
fd_list[fd].e ^= (unsigned int)(FD_EV_IN_SL << dir);
return 1;
}
return 0;
fd_list[fd].e ^= (unsigned int)(FD_EV_IN_SL << dir);
return 1;
}
/* normally unused */