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authorTodd Poynor <toddpoynor@google.com>2013-09-11 01:52:54 +0200
committerTodd Poynor <toddpoynor@google.com>2013-09-12 21:42:33 +0200
commit1fc89d4c84e512b484d82d971d997bdb0aef40e2 (patch)
tree08d6370fef594f6947724879a4613f8ace71bcb5
parentam 1306a7ef: am cc2958fd: fix secure adb in recovery (diff)
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Diffstat (limited to '')
-rw-r--r--minui/events.c81
-rw-r--r--minui/minui.h4
2 files changed, 58 insertions, 27 deletions
diff --git a/minui/events.c b/minui/events.c
index 2918afaa8..fe364bf01 100644
--- a/minui/events.c
+++ b/minui/events.c
@@ -18,7 +18,7 @@
#include <stdlib.h>
#include <fcntl.h>
#include <dirent.h>
-#include <sys/poll.h>
+#include <sys/epoll.h>
#include <linux/input.h>
@@ -34,11 +34,15 @@
((array)[(bit)/BITS_PER_LONG] & (1 << ((bit) % BITS_PER_LONG)))
struct fd_info {
+ int fd;
ev_callback cb;
void *data;
};
-static struct pollfd ev_fds[MAX_DEVICES + MAX_MISC_FDS];
+static int epollfd;
+static struct epoll_event polledevents[MAX_DEVICES + MAX_MISC_FDS];
+static int npolledevents;
+
static struct fd_info ev_fdinfo[MAX_DEVICES + MAX_MISC_FDS];
static unsigned ev_count = 0;
@@ -50,6 +54,12 @@ int ev_init(ev_callback input_cb, void *data)
DIR *dir;
struct dirent *de;
int fd;
+ struct epoll_event ev;
+ bool epollctlfail = false;
+
+ epollfd = epoll_create(MAX_DEVICES + MAX_MISC_FDS);
+ if (epollfd == -1)
+ return -1;
dir = opendir("/dev/input");
if(dir != 0) {
@@ -74,8 +84,15 @@ int ev_init(ev_callback input_cb, void *data)
continue;
}
- ev_fds[ev_count].fd = fd;
- ev_fds[ev_count].events = POLLIN;
+ ev.events = EPOLLIN | EPOLLWAKEUP;
+ ev.data.ptr = (void *)&ev_fdinfo[ev_count];
+ if (epoll_ctl(epollfd, EPOLL_CTL_ADD, fd, &ev)) {
+ close(fd);
+ epollctlfail = true;
+ continue;
+ }
+
+ ev_fdinfo[ev_count].fd = fd;
ev_fdinfo[ev_count].cb = input_cb;
ev_fdinfo[ev_count].data = data;
ev_count++;
@@ -84,59 +101,73 @@ int ev_init(ev_callback input_cb, void *data)
}
}
+ if (epollctlfail && !ev_count) {
+ close(epollfd);
+ epollfd = -1;
+ return -1;
+ }
+
return 0;
}
int ev_add_fd(int fd, ev_callback cb, void *data)
{
+ struct epoll_event ev;
+ int ret;
+
if (ev_misc_count == MAX_MISC_FDS || cb == NULL)
return -1;
- ev_fds[ev_count].fd = fd;
- ev_fds[ev_count].events = POLLIN;
- ev_fdinfo[ev_count].cb = cb;
- ev_fdinfo[ev_count].data = data;
- ev_count++;
- ev_misc_count++;
- return 0;
+ ev.events = EPOLLIN | EPOLLWAKEUP;
+ ev.data.ptr = (void *)&ev_fdinfo[ev_count];
+ ret = epoll_ctl(epollfd, EPOLL_CTL_ADD, fd, &ev);
+ if (!ret) {
+ ev_fdinfo[ev_count].fd = fd;
+ ev_fdinfo[ev_count].cb = cb;
+ ev_fdinfo[ev_count].data = data;
+ ev_count++;
+ ev_misc_count++;
+ }
+
+ return ret;
}
void ev_exit(void)
{
while (ev_count > 0) {
- close(ev_fds[--ev_count].fd);
+ close(ev_fdinfo[--ev_count].fd);
}
ev_misc_count = 0;
ev_dev_count = 0;
+ close(epollfd);
}
int ev_wait(int timeout)
{
- int r;
-
- r = poll(ev_fds, ev_count, timeout);
- if (r <= 0)
+ npolledevents = epoll_wait(epollfd, polledevents, ev_count, timeout);
+ if (npolledevents <= 0)
return -1;
return 0;
}
void ev_dispatch(void)
{
- unsigned n;
+ int n;
int ret;
- for (n = 0; n < ev_count; n++) {
- ev_callback cb = ev_fdinfo[n].cb;
- if (cb && (ev_fds[n].revents & ev_fds[n].events))
- cb(ev_fds[n].fd, ev_fds[n].revents, ev_fdinfo[n].data);
+ for (n = 0; n < npolledevents; n++) {
+ struct fd_info *fdi = polledevents[n].data.ptr;
+ ev_callback cb = fdi->cb;
+ if (cb)
+ cb(fdi->fd, polledevents[n].events, fdi->data);
}
}
-int ev_get_input(int fd, short revents, struct input_event *ev)
+int ev_get_input(int fd, unsigned int epevents, struct input_event *ev)
{
int r;
- if (revents & POLLIN) {
+ if (epevents & EPOLLIN) {
r = read(fd, ev, sizeof(*ev));
if (r == sizeof(*ev))
return 0;
@@ -157,11 +188,11 @@ int ev_sync_key_state(ev_set_key_callback set_key_cb, void *data)
memset(key_bits, 0, sizeof(key_bits));
memset(ev_bits, 0, sizeof(ev_bits));
- ret = ioctl(ev_fds[i].fd, EVIOCGBIT(0, sizeof(ev_bits)), ev_bits);
+ ret = ioctl(ev_fdinfo[i].fd, EVIOCGBIT(0, sizeof(ev_bits)), ev_bits);
if (ret < 0 || !test_bit(EV_KEY, ev_bits))
continue;
- ret = ioctl(ev_fds[i].fd, EVIOCGKEY(sizeof(key_bits)), key_bits);
+ ret = ioctl(ev_fdinfo[i].fd, EVIOCGKEY(sizeof(key_bits)), key_bits);
if (ret < 0)
continue;
diff --git a/minui/minui.h b/minui/minui.h
index 1b8dd059b..805c58bed 100644
--- a/minui/minui.h
+++ b/minui/minui.h
@@ -50,7 +50,7 @@ unsigned int gr_get_height(gr_surface surface);
// see http://www.mjmwired.net/kernel/Documentation/input/ for info.
struct input_event;
-typedef int (*ev_callback)(int fd, short revents, void *data);
+typedef int (*ev_callback)(int fd, unsigned int epevents, void *data);
typedef int (*ev_set_key_callback)(int code, int value, void *data);
int ev_init(ev_callback input_cb, void *data);
@@ -65,7 +65,7 @@ int ev_sync_key_state(ev_set_key_callback set_key_cb, void *data);
*/
int ev_wait(int timeout);
-int ev_get_input(int fd, short revents, struct input_event *ev);
+int ev_get_input(int fd, unsigned int epevents, struct input_event *ev);
void ev_dispatch(void);
// Resources