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client (Android): remove apps from mem when suspending and on batteries 

If we're on batteries and suspending for any reason other than CPU throttling,
remove apps from memory.
This reduces battery drain in some cases.
This commit is contained in:
David Anderson 2013-06-22 09:35:16 -07:00
parent 2682d823f0
commit 727f220766
1 changed files with 20 additions and 11 deletions
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31
client/app_control.cpp
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@ -1048,15 +1048,32 @@ void ACTIVE_TASK_SET::suspend_all(int reason) {
for (unsigned int i=0; i<active_tasks.size(); i++) {
ACTIVE_TASK* atp = active_tasks[i];
if (atp->task_state() != PROCESS_EXECUTING) continue;
switch (reason) {
case SUSPEND_REASON_CPU_THROTTLE:
// handle CPU throttling separately
//
if (reason == SUSPEND_REASON_CPU_THROTTLE) {
if (atp->result->dont_throttle()) continue;
// if we're doing CPU throttling,
// don't suspend CPU apps that use < 1 CPU
//
if (!atp->result->uses_coprocs() && atp->app_version->avg_ncpus < 1) continue;
atp->preempt(REMOVE_NEVER);
break;
continue;;
}
#ifdef ANDROID
// On Android, remove apps from memory if on batteries
// no matter what the reason for suspension.
// The message polling in the BOINC runtime system
// imposes an overhead which drains the battery
//
if (gstate.host_info.host_is_running_on_batteries()) {
atp->preempt(REMOVE_ALWAYS);
continue;
}
#endif
switch (reason) {
case SUSPEND_REASON_BENCHMARKS:
atp->preempt(REMOVE_NEVER);
break;
@ -1076,14 +1093,6 @@ void ACTIVE_TASK_SET::suspend_all(int reason) {
//
atp->preempt(REMOVE_NEVER);
break;
#ifdef ANDROID
case SUSPEND_REASON_BATTERIES:
// On Android, remove apps from memory if on batteries.
// The message polling in the BOINC runtime system
// imposes an overhead which drains the battery a bit
atp->preempt(REMOVE_ALWAYS);
break;
#endif
default:
atp->preempt(REMOVE_MAYBE_USER);
break;