One of the key issue is how to know which app is using Wi-Fi. To my knowledge, Android uses Wifilock to know which app is using Wi-Fi. Acquiring a wifilock can keep Wi-Fi awake until the lock is released. Making use of this mechanism, Android can know which app is acquiring Wi-Fi. Then, using timer to measure the Wi-Fi running time.

Once we can have network statistic for wifi interface, we can calculate the power consumption for wifi component by using tx/rx packets, connection rate and average power consumption for wifi component.

This patch implements in NetworkStatsService to notify PowerStatsService some information. The formation is manifestURL, txBytes + rxBytes and wifi link speed.

This patch implements in NetworkStatsService to notify PowerStatsService some information. The formation is manifestURL, txBytes + rxBytes and wifi link speed. This patch depends on Bug 784575.

After getting the information from NetworkStatsService. PowerStatsService estimates power consumption of wifi transmission.

Fix bugs.

Comment on attachment 787968 [details] [diff] [review] Part1: estimate power consumption of wifi transmission Review of attachment 787968 [details] [diff] [review]: ----------------------------------------------------------------- Please fix some nits. ::: dom/power/PowerStatsService.jsm @@ +37,5 @@ > > +XPCOMUtils.defineLazyServiceGetter(this, "networkstatsService", > + "@mozilla.org/networkstatsService;1", > + "nsINetworkStatsService"); > + This seems not used in this patch. Please remove it. @@ +313,5 @@ > if (item == "pid") { > appPowerInfo[index].pid = value[0]; > } > > + if (item === "wifiactive") { value is a array right ? Please add the comment to explain the format of value.

Firefox OS is not being worked on