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proper timeout handling for input subsys

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@640 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2009-03-03 21:52:07 +00:00
parent 713c922402
commit 0403eead1f
3 changed files with 102 additions and 60 deletions
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61
platform/linux/plat.c
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@ -1,4 +1,9 @@
#include <stdio.h>
#include <dirent.h>
#include <sys/time.h>
#include <time.h>
#include <unistd.h>
#include "../common/plat.h"
@ -12,3 +17,59 @@ int plat_is_dir(const char *path)
return 0;
}
unsigned int plat_get_ticks_ms(void)
{
struct timeval tv;
unsigned int ret;
gettimeofday(&tv, NULL);
ret = (unsigned)tv.tv_sec * 1000;
/* approximate division */
ret += ((unsigned)tv.tv_usec * 4195) >> 22;
return ret;
}
void plat_sleep_ms(int ms)
{
usleep(ms * 1000);
}
int plat_wait_event(int *fds_hnds, int count, int timeout_ms)
{
struct timeval tv, *timeout = NULL;
int i, ret, fdmax = -1;
fd_set fdset;
if (timeout_ms >= 0) {
tv.tv_sec = timeout_ms / 1000;
tv.tv_usec = (timeout_ms % 1000) * 1000;
timeout = &tv;
}
FD_ZERO(&fdset);
for (i = 0; i < count; i++) {
if (fds_hnds[i] > fdmax) fdmax = fds_hnds[i];
FD_SET(fds_hnds[i], &fdset);
}
ret = select(fdmax + 1, &fdset, NULL, NULL, timeout);
if (ret == -1)
{
perror("plat_wait_event: select failed");
sleep(1);
return -1;
}
if (ret == 0)
return -1; /* timeout */
ret = -1;
for (i = 0; i < count; i++)
if (FD_ISSET(fds_hnds[i], &fdset))
ret = fds_hnds[i];
return ret;
}