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exp/sensor: block forever until new events occur on android 

The former Reader inspired APIs were designed to timeout if no events
occur after an excessive amount of time. As we switch to the app
event based model, timing out is not required. We can block on
pollAll forever until new events arrive.

Change-Id: I086fc908ebfe6ae9bd96ce9199636ad0242bbec5
Reviewed-on: https://go-review.googlesource.com/14223
Reviewed-by: Nigel Tao <nigeltao@golang.org>
This commit is contained in:
Burcu Dogan 2015-09-02 19:23:47 -07:00
parent 5651add1eb
commit 679c68b58d
1 changed files with 1 additions and 2 deletions
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3
exp/sensor/android.c
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@ -46,11 +46,10 @@ int GoAndroid_readQueue(int looperId, ASensorEventQueue* q, int n, int32_t* type
int events;
ASensorEvent event;
int i = 0;
// Block for 30 secs at most, timeout if nothing happens.
// Try n times read from the event queue.
// If anytime timeout occurs, don't retry to read and immediately return.
// Consume the event queue entirely between polls.
while (i < n && (id = ALooper_pollAll(30*1000, NULL, &events, NULL)) >= 0) {
while (i < n && (id = ALooper_pollAll(-1, NULL, &events, NULL)) >= 0) {
if (id != looperId) {
continue;
}