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Merge "Workaround for USAP support in jitzygote." into qt-dev

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This commit is contained in:
Nicolas Geoffray
2019-05-17 12:31:12 +00:00
committed by Android (Google) Code Review
parent 141e7b0395 e66a2bf226
commit 94b2981853
1 changed files with 13 additions and 8 deletions
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21
core/java/android/os/ZygoteProcess.java
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@@ -640,14 +640,9 @@ public class ZygoteProcess {
ZygoteConfig.USAP_POOL_ENABLED, USAP_POOL_ENABLED_DEFAULT);
if (!propertyString.isEmpty()) {
if (SystemProperties.get("dalvik.vm.boot-image", "").endsWith("apex.art")) {
// TODO(b/119800099): Tweak usap configuration in jitzygote mode.
mUsapPoolEnabled = false;
} else {
mUsapPoolEnabled = Zygote.getConfigurationPropertyBoolean(
ZygoteConfig.USAP_POOL_ENABLED,
Boolean.parseBoolean(USAP_POOL_ENABLED_DEFAULT));
}
mUsapPoolEnabled = Zygote.getConfigurationPropertyBoolean(
ZygoteConfig.USAP_POOL_ENABLED,
Boolean.parseBoolean(USAP_POOL_ENABLED_DEFAULT));
}
boolean valueChanged = origVal != mUsapPoolEnabled;
@@ -665,6 +660,16 @@ public class ZygoteProcess {
private boolean fetchUsapPoolEnabledPropWithMinInterval() {
final long currentTimestamp = SystemClock.elapsedRealtime();
if (SystemProperties.get("dalvik.vm.boot-image", "").endsWith("apex.art")) {
// TODO(b/119800099): In jitzygote mode, we want to start using USAP processes
// only once the boot classpath has been compiled. There is currently no callback
// from the runtime to notify the zygote about end of compilation, so for now just
// arbitrarily start USAP processes 15 seconds after boot.
if (currentTimestamp <= 15000) {
return false;
}
}
if (mIsFirstPropCheck
|| (currentTimestamp - mLastPropCheckTimestamp >= Zygote.PROPERTY_CHECK_INTERVAL)) {
mIsFirstPropCheck = false;