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event-loop: Consolidate code for setting up new sources

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This commit is contained in:
Kristian Høgsberg 2012-05-08 09:30:49 -04:00
parent a41fa8b3ec
commit 3e7bd7362b
1 changed files with 44 additions and 98 deletions
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142
src/event-loop.c
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@ -26,6 +26,7 @@
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <sys/epoll.h>
@ -46,7 +47,6 @@ struct wl_event_loop {
struct wl_event_source_interface {
int (*dispatch)(struct wl_event_source *source,
struct epoll_event *ep);
int (*remove)(struct wl_event_source *source);
};
struct wl_event_source {
@ -60,6 +60,7 @@ struct wl_event_source {
struct wl_event_source_fd {
struct wl_event_source base;
wl_event_loop_fd_func_t func;
int fd;
};
static int
@ -75,41 +76,28 @@ wl_event_source_fd_dispatch(struct wl_event_source *source,
if (ep->events & EPOLLOUT)
mask |= WL_EVENT_WRITABLE;
return fd_source->func(source->fd, mask, source->data);
}
static int
wl_event_source_fd_remove(struct wl_event_source *source)
{
struct wl_event_loop *loop = source->loop;
return epoll_ctl(loop->epoll_fd, EPOLL_CTL_DEL, source->fd, NULL);
return fd_source->func(fd_source->fd, mask, source->data);
}
struct wl_event_source_interface fd_source_interface = {
wl_event_source_fd_dispatch,
wl_event_source_fd_remove
};
WL_EXPORT struct wl_event_source *
wl_event_loop_add_fd(struct wl_event_loop *loop,
int fd, uint32_t mask,
wl_event_loop_fd_func_t func,
void *data)
static struct wl_event_source *
add_source(struct wl_event_loop *loop,
struct wl_event_source *source, uint32_t mask, void *data)
{
struct wl_event_source_fd *source;
struct epoll_event ep;
source = malloc(sizeof *source);
if (source == NULL)
if (source->fd < 0) {
fprintf(stderr, "could not add source\n: %m");
free(source);
return NULL;
}
source->base.interface = &fd_source_interface;
source->base.loop = loop;
wl_list_init(&source->base.link);
source->base.fd = fd;
source->func = func;
source->base.data = data;
source->loop = loop;
source->data = data;
wl_list_init(&source->link);
memset(&ep, 0, sizeof ep);
if (mask & WL_EVENT_READABLE)
@ -118,12 +106,33 @@ wl_event_loop_add_fd(struct wl_event_loop *loop,
ep.events |= EPOLLOUT;
ep.data.ptr = source;
if (epoll_ctl(loop->epoll_fd, EPOLL_CTL_ADD, fd, &ep) < 0) {
if (epoll_ctl(loop->epoll_fd, EPOLL_CTL_ADD, source->fd, &ep) < 0) {
close(source->fd);
free(source);
return NULL;
}
return &source->base;
return source;
}
WL_EXPORT struct wl_event_source *
wl_event_loop_add_fd(struct wl_event_loop *loop,
int fd, uint32_t mask,
wl_event_loop_fd_func_t func,
void *data)
{
struct wl_event_source_fd *source;
source = malloc(sizeof *source);
if (source == NULL)
return NULL;
source->base.interface = &fd_source_interface;
source->base.fd = fcntl(fd, F_DUPFD_CLOEXEC, 0);
source->func = func;
source->fd = fd;
return add_source(loop, &source->base, mask, data);
}
WL_EXPORT int
@ -164,16 +173,8 @@ wl_event_source_timer_dispatch(struct wl_event_source *source,
return timer_source->func(timer_source->base.data);
}
static int
wl_event_source_timer_remove(struct wl_event_source *source)
{
close(source->fd);
return 0;
}
struct wl_event_source_interface timer_source_interface = {
wl_event_source_timer_dispatch,
wl_event_source_timer_remove
};
WL_EXPORT struct wl_event_source *
@ -182,39 +183,16 @@ wl_event_loop_add_timer(struct wl_event_loop *loop,
void *data)
{
struct wl_event_source_timer *source;
struct epoll_event ep;
int fd;
source = malloc(sizeof *source);
if (source == NULL)
return NULL;
source->base.interface = &timer_source_interface;
source->base.loop = loop;
wl_list_init(&source->base.link);
fd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC);
if (fd < 0) {
fprintf(stderr, "could not create timerfd\n: %m");
free(source);
return NULL;
}
source->base.fd = fd;
source->base.fd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC);
source->func = func;
source->base.data = data;
memset(&ep, 0, sizeof ep);
ep.events = EPOLLIN;
ep.data.ptr = source;
if (epoll_ctl(loop->epoll_fd, EPOLL_CTL_ADD, fd, &ep) < 0) {
close(source->base.fd);
free(source);
return NULL;
}
return &source->base;
return add_source(loop, &source->base, WL_EVENT_READABLE, data);
}
WL_EXPORT int
@ -258,16 +236,8 @@ wl_event_source_signal_dispatch(struct wl_event_source *source,
signal_source->base.data);
}
static int
wl_event_source_signal_remove(struct wl_event_source *source)
{
close(source->fd);
return 0;
}
struct wl_event_source_interface signal_source_interface = {
wl_event_source_signal_dispatch,
wl_event_source_signal_remove
};
WL_EXPORT struct wl_event_source *
@ -277,44 +247,23 @@ wl_event_loop_add_signal(struct wl_event_loop *loop,
void *data)
{
struct wl_event_source_signal *source;
struct epoll_event ep;
sigset_t mask;
int fd;
source = malloc(sizeof *source);
if (source == NULL)
return NULL;
source->base.interface = &signal_source_interface;
source->base.loop = loop;
wl_list_init(&source->base.link);
source->signal_number = signal_number;
sigemptyset(&mask);
sigaddset(&mask, signal_number);
fd = signalfd(-1, &mask, SFD_CLOEXEC);
if (fd < 0) {
fprintf(stderr, "could not create fd to watch signal\n: %m");
free(source);
return NULL;
}
source->base.fd = fd;
source->base.fd = signalfd(-1, &mask, SFD_CLOEXEC);
sigprocmask(SIG_BLOCK, &mask, NULL);
source->func = func;
source->base.data = data;
memset(&ep, 0, sizeof ep);
ep.events = EPOLLIN;
ep.data.ptr = source;
if (epoll_ctl(loop->epoll_fd, EPOLL_CTL_ADD, fd, &ep) < 0) {
close(fd);
free(source);
return NULL;
}
return &source->base;
return add_source(loop, &source->base, WL_EVENT_READABLE, data);
}
struct wl_event_source_idle {
@ -324,7 +273,6 @@ struct wl_event_source_idle {
struct wl_event_source_interface idle_source_interface = {
NULL,
NULL
};
WL_EXPORT struct wl_event_source *
@ -340,7 +288,7 @@ wl_event_loop_add_idle(struct wl_event_loop *loop,
source->base.interface = &idle_source_interface;
source->base.loop = loop;
source->base.fd = 0;
source->base.fd = -1;
source->func = func;
source->base.data = data;
@ -361,13 +309,11 @@ wl_event_source_remove(struct wl_event_source *source)
{
struct wl_event_loop *loop = source->loop;
if (!wl_list_empty(&source->link))
wl_list_remove(&source->link);
if (source->interface->remove)
source->interface->remove(source);
if (source->fd >= 0)
close(source->fd);
source->fd = -1;
wl_list_remove(&source->link);
wl_list_insert(&loop->destroy_list, &source->link);
return 0;