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main_loop: Make main_loop_wait() return void 

The last users of main_loop_wait() that cared about the return value
have now been changed to no longer use it. Drop the now-useless return
value and make the function return void.

We avoid the awkwardness of ifdeffery to handle the 'ret'
variable in main_loop_wait() only being wanted if CONFIG_SLIRP
by simply dropping all the ifdefs. There are stub implementations
of slirp_pollfds_poll() and slirp_pollfds_fill() already in
stubs/slirp.c which do nothing, as required.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <1498584769-12439-3-git-send-email-peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Peter Maydell 2017-06-27 18:32:49 +01:00 committed by Paolo Bonzini
parent be59df797c
commit de5f852f38
2 changed files with 2 additions and 8 deletions
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2
include/qemu/main-loop.h
View File

@ -79,7 +79,7 @@ int qemu_init_main_loop(Error **errp);
* *
* @nonblocking: Whether the caller should block until an event occurs. * @nonblocking: Whether the caller should block until an event occurs.
*/ */
int main_loop_wait(int nonblocking); void main_loop_wait(int nonblocking);
/** /**
* qemu_get_aio_context: Return the main loop's AioContext * qemu_get_aio_context: Return the main loop's AioContext

8
util/main-loop.c
View File

@ -487,7 +487,7 @@ static int os_host_main_loop_wait(int64_t timeout)
} }
#endif #endif
int main_loop_wait(int nonblocking) void main_loop_wait(int nonblocking)
{ {
int ret; int ret;
uint32_t timeout = UINT32_MAX; uint32_t timeout = UINT32_MAX;
@ -500,9 +500,7 @@ int main_loop_wait(int nonblocking)
/* poll any events */ /* poll any events */
g_array_set_size(gpollfds, 0); /* reset for new iteration */ g_array_set_size(gpollfds, 0); /* reset for new iteration */
/* XXX: separate device handlers from system ones */ /* XXX: separate device handlers from system ones */
#ifdef CONFIG_SLIRP
slirp_pollfds_fill(gpollfds, &timeout); slirp_pollfds_fill(gpollfds, &timeout);
#endif
if (timeout == UINT32_MAX) { if (timeout == UINT32_MAX) {
timeout_ns = -1; timeout_ns = -1;
@ -515,16 +513,12 @@ int main_loop_wait(int nonblocking)
&main_loop_tlg)); &main_loop_tlg));
ret = os_host_main_loop_wait(timeout_ns); ret = os_host_main_loop_wait(timeout_ns);
#ifdef CONFIG_SLIRP
slirp_pollfds_poll(gpollfds, (ret < 0)); slirp_pollfds_poll(gpollfds, (ret < 0));
#endif
/* CPU thread can infinitely wait for event after /* CPU thread can infinitely wait for event after
missing the warp */ missing the warp */
qemu_start_warp_timer(); qemu_start_warp_timer();
qemu_clock_run_all_timers(); qemu_clock_run_all_timers();
return ret;
} }
/* Functions to operate on the main QEMU AioContext. */ /* Functions to operate on the main QEMU AioContext. */