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unlimited select() timeout

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mpd sets a 1s select() timeout for no reason.  This makes mpd wake up
the CPU, consume some cycles just to see there is nothing to do.  We
can save that by specifying NULL instead of a timeout.

git-svn-id: https://svn.musicpd.org/mpd/trunk@7212 09075e82-0dd4-0310-85a5-a0d7c8717e4f
This commit is contained in:
Max Kellermann
2008-03-26 10:38:40 +00:00
committed by Eric Wong
parent d78ddd1e50
commit f9e317ccbd
1 changed files with 3 additions and 5 deletions
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8
src/interface.c
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@@ -478,14 +478,11 @@ int doIOForInterfaces(void)
fd_set rfds; fd_set rfds;
fd_set wfds; fd_set wfds;
fd_set efds; fd_set efds;
struct timeval tv; struct timeval tv, *tvp = NULL;
int i; int i;
int selret; int selret;
int fdmax; int fdmax;
tv.tv_sec = 1;
tv.tv_usec = 0;
while (1) { while (1) {
fdmax = 0; fdmax = 0;
@@ -495,7 +492,7 @@ int doIOForInterfaces(void)
registered_IO_add_fds(&fdmax, &rfds, &wfds, &efds); registered_IO_add_fds(&fdmax, &rfds, &wfds, &efds);
selret = select(fdmax + 1, &rfds, &wfds, &efds, &tv); selret = select(fdmax + 1, &rfds, &wfds, &efds, tvp);
if (selret < 0 && errno == EINTR) if (selret < 0 && errno == EINTR)
break; break;
@@ -530,6 +527,7 @@ int doIOForInterfaces(void)
tv.tv_sec = 0; tv.tv_sec = 0;
tv.tv_usec = 0; tv.tv_usec = 0;
tvp = &tv;
} }
return 1; return 1;