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Use APEX boot image for profilebootclasspath

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To get profiling info, we need to avoid having compiled code.

Also pass down the --count-hotness-in-compiled-code for measuring
performance in compiled code.

Bug: 139883463
Test: manual
Change-Id: Ib02b476522b7709172fc06d6517446cad59045d4
This commit is contained in:
Mathieu Chartier
2019-09-20 16:07:51 -07:00
parent 37f8bfb2c1
commit a557554def
1 changed files with 12 additions and 6 deletions
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18
core/jni/AndroidRuntime.cpp
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@@ -696,26 +696,32 @@ int AndroidRuntime::startVm(JavaVM** pJavaVM, JNIEnv** pEnv, bool zygote, bool p
// Read if we are using the profile configuration, do this at the start since the last ART args
// take precedence.
property_get("dalvik.vm.profilebootclasspath", propBuf, "");
std::string profile_boot_class_path = propBuf;
std::string profile_boot_class_path_flag = propBuf;
// Empty means the property is unset and we should default to the phenotype property.
// The possible values are {"true", "false", ""}
if (profile_boot_class_path.empty()) {
profile_boot_class_path = server_configurable_flags::GetServerConfigurableFlag(
if (profile_boot_class_path_flag.empty()) {
profile_boot_class_path_flag = server_configurable_flags::GetServerConfigurableFlag(
RUNTIME_NATIVE_BOOT_NAMESPACE,
PROFILE_BOOT_CLASS_PATH,
/*default_value=*/ "");
}
if (profile_boot_class_path == "true") {
const bool profile_boot_class_path = (profile_boot_class_path_flag == "true");
if (profile_boot_class_path) {
addOption("-Xcompiler-option");
addOption("--count-hotness-in-compiled-code");
addOption("-Xps-profile-boot-class-path");
addOption("-Xps-profile-aot-code");
addOption("-Xjitsaveprofilinginfo");
}
std::string use_apex_image =
std::string use_apex_image_flag =
server_configurable_flags::GetServerConfigurableFlag(RUNTIME_NATIVE_BOOT_NAMESPACE,
ENABLE_APEX_IMAGE,
/*default_value=*/ "");
if (use_apex_image == "true") {
// Use the APEX boot image for boot class path profiling to get JIT samples on BCP methods.
// Also use the APEX boot image if it's explicitly enabled via configuration flag.
const bool use_apex_image = profile_boot_class_path || (use_apex_image_flag == "true");
if (use_apex_image) {
addOption(kApexImageOption);
ALOGI("Using Apex boot image: '%s'\n", kApexImageOption);
} else if (parseRuntimeOption("dalvik.vm.boot-image", bootImageBuf, "-Ximage:")) {