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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "PowerManagerService-JNI"
//#define LOG_NDEBUG 0
#include "JNIHelp.h"
#include "jni.h"
#include <ScopedUtfChars.h>
#include <limits.h>
#include <android_runtime/AndroidRuntime.h>
#include <android_runtime/Log.h>
#include <utils/Timers.h>
#include <utils/misc.h>
#include <utils/String8.h>
#include <utils/Log.h>
#include <hardware/power.h>
#include <hardware_legacy/power.h>
#include <suspend/autosuspend.h>
#include "com_android_server_power_PowerManagerService.h"
namespace android {
// ----------------------------------------------------------------------------
static struct {
jmethodID userActivityFromNative;
} gPowerManagerServiceClassInfo;
// ----------------------------------------------------------------------------
static jobject gPowerManagerServiceObj;
static struct power_module* gPowerModule;
static nsecs_t gLastEventTime[USER_ACTIVITY_EVENT_LAST + 1];
// Throttling interval for user activity calls.
static const nsecs_t MIN_TIME_BETWEEN_USERACTIVITIES = 500 * 1000000L; // 500ms
// ----------------------------------------------------------------------------
static bool checkAndClearExceptionFromCallback(JNIEnv* env, const char* methodName) {
if (env->ExceptionCheck()) {
ALOGE("An exception was thrown by callback '%s'.", methodName);
LOGE_EX(env);
env->ExceptionClear();
return true;
}
return false;
}
void android_server_PowerManagerService_userActivity(nsecs_t eventTime, int32_t eventType) {
// Tell the power HAL when user activity occurs.
if (gPowerModule && gPowerModule->powerHint) {
gPowerModule->powerHint(gPowerModule, POWER_HINT_INTERACTION, NULL);
}
if (gPowerManagerServiceObj) {
// Throttle calls into user activity by event type.
// We're a little conservative about argument checking here in case the caller
// passes in bad data which could corrupt system state.
if (eventType >= 0 && eventType <= USER_ACTIVITY_EVENT_LAST) {
nsecs_t now = systemTime(SYSTEM_TIME_MONOTONIC);
if (eventTime > now) {
eventTime = now;
}
if (gLastEventTime[eventType] + MIN_TIME_BETWEEN_USERACTIVITIES > eventTime) {
return;
}
gLastEventTime[eventType] = eventTime;
}
JNIEnv* env = AndroidRuntime::getJNIEnv();
env->CallVoidMethod(gPowerManagerServiceObj,
gPowerManagerServiceClassInfo.userActivityFromNative,
nanoseconds_to_milliseconds(eventTime), eventType, 0);
checkAndClearExceptionFromCallback(env, "userActivityFromNative");
}
}
// ----------------------------------------------------------------------------
static void nativeInit(JNIEnv* env, jobject obj) {
gPowerManagerServiceObj = env->NewGlobalRef(obj);
status_t err = hw_get_module(POWER_HARDWARE_MODULE_ID,
(hw_module_t const**)&gPowerModule);
if (!err) {
gPowerModule->init(gPowerModule);
} else {
ALOGE("Couldn't load %s module (%s)", POWER_HARDWARE_MODULE_ID, strerror(-err));
}
}
static void nativeAcquireSuspendBlocker(JNIEnv *env, jclass clazz, jstring nameStr) {
ScopedUtfChars name(env, nameStr);
acquire_wake_lock(PARTIAL_WAKE_LOCK, name.c_str());
}
static void nativeReleaseSuspendBlocker(JNIEnv *env, jclass clazz, jstring nameStr) {
ScopedUtfChars name(env, nameStr);
release_wake_lock(name.c_str());
}
static void nativeSetInteractive(JNIEnv *env, jclass clazz, jboolean enable) {
if (gPowerModule) {
if (enable) {
ALOGD_IF_SLOW(20, "Excessive delay in setInteractive(true) while turning screen on");
gPowerModule->setInteractive(gPowerModule, true);
} else {
ALOGD_IF_SLOW(20, "Excessive delay in setInteractive(false) while turning screen off");
gPowerModule->setInteractive(gPowerModule, false);
}
}
}
static void nativeSetAutoSuspend(JNIEnv *env, jclass clazz, jboolean enable) {
if (enable) {
ALOGD_IF_SLOW(100, "Excessive delay in autosuspend_enable() while turning screen off");
autosuspend_enable();
} else {
ALOGD_IF_SLOW(100, "Excessive delay in autosuspend_disable() while turning screen on");
autosuspend_disable();
}
}
static void nativeSendPowerHint(JNIEnv *env, jclass clazz, jint hintId, jint data) {
int data_param = data;
if (gPowerModule && gPowerModule->powerHint) {
if(data)
gPowerModule->powerHint(gPowerModule, (power_hint_t)hintId, &data_param);
else {
gPowerModule->powerHint(gPowerModule, (power_hint_t)hintId, NULL);
}
}
}
static void nativeCpuBoost(JNIEnv *env, jobject clazz, jint duration) {
// Tell the Power HAL to boost the CPU
if (gPowerModule && gPowerModule->powerHint) {
gPowerModule->powerHint(gPowerModule, POWER_HINT_CPU_BOOST, (void *) duration);
}
}
// ----------------------------------------------------------------------------
static JNINativeMethod gPowerManagerServiceMethods[] = {
/* name, signature, funcPtr */
{ "nativeInit", "()V",
(void*) nativeInit },
{ "nativeAcquireSuspendBlocker", "(Ljava/lang/String;)V",
(void*) nativeAcquireSuspendBlocker },
{ "nativeReleaseSuspendBlocker", "(Ljava/lang/String;)V",
(void*) nativeReleaseSuspendBlocker },
{ "nativeSetInteractive", "(Z)V",
(void*) nativeSetInteractive },
{ "nativeSetAutoSuspend", "(Z)V",
(void*) nativeSetAutoSuspend },
{ "nativeSendPowerHint", "(II)V",
(void*) nativeSendPowerHint },
{ "nativeCpuBoost", "(I)V",
(void*) nativeCpuBoost },
};
#define FIND_CLASS(var, className) \
var = env->FindClass(className); \
LOG_FATAL_IF(! var, "Unable to find class " className);
#define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
var = env->GetMethodID(clazz, methodName, methodDescriptor); \
LOG_FATAL_IF(! var, "Unable to find method " methodName);
#define GET_FIELD_ID(var, clazz, fieldName, fieldDescriptor) \
var = env->GetFieldID(clazz, fieldName, fieldDescriptor); \
LOG_FATAL_IF(! var, "Unable to find field " fieldName);
int register_android_server_PowerManagerService(JNIEnv* env) {
int res = jniRegisterNativeMethods(env, "com/android/server/power/PowerManagerService",
gPowerManagerServiceMethods, NELEM(gPowerManagerServiceMethods));
LOG_FATAL_IF(res < 0, "Unable to register native methods.");
// Callbacks
jclass clazz;
FIND_CLASS(clazz, "com/android/server/power/PowerManagerService");
GET_METHOD_ID(gPowerManagerServiceClassInfo.userActivityFromNative, clazz,
"userActivityFromNative", "(JII)V");
// Initialize
for (int i = 0; i <= USER_ACTIVITY_EVENT_LAST; i++) {
gLastEventTime[i] = LLONG_MIN;
}
gPowerManagerServiceObj = NULL;
gPowerModule = NULL;
return 0;
}
} /* namespace android */
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