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/*
* Copyright (C) 2008 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.
*/
/*
* dalvik.system.VMRuntime
*/
#include "Dalvik.h"
#include "native/InternalNativePriv.h"
#include <cutils/array.h>
#include <limits.h>
/*
* public native float getTargetHeapUtilization()
*
* Gets the current ideal heap utilization, represented as a number
* between zero and one.
*/
static void Dalvik_dalvik_system_VMRuntime_getTargetHeapUtilization(
const u4* args, JValue* pResult)
{
UNUSED_PARAMETER(args);
RETURN_FLOAT(dvmGetTargetHeapUtilization());
}
/*
* native float nativeSetTargetHeapUtilization()
*
* Sets the current ideal heap utilization, represented as a number
* between zero and one. Returns the old utilization.
*
* Note that this is NOT static.
*/
static void Dalvik_dalvik_system_VMRuntime_nativeSetTargetHeapUtilization(
const u4* args, JValue* pResult)
{
dvmSetTargetHeapUtilization(dvmU4ToFloat(args[1]));
RETURN_VOID();
}
/*
* public native void startJitCompilation()
*
* Callback function from the framework to indicate that an app has gone
* through the startup phase and it is time to enable the JIT compiler.
*/
static void Dalvik_dalvik_system_VMRuntime_startJitCompilation(const u4* args,
JValue* pResult)
{
#if defined(WITH_JIT)
if (gDvm.executionMode == kExecutionModeJit &&
gDvmJit.disableJit == false) {
dvmLockMutex(&gDvmJit.compilerLock);
gDvmJit.alreadyEnabledViaFramework = true;
pthread_cond_signal(&gDvmJit.compilerQueueActivity);
dvmUnlockMutex(&gDvmJit.compilerLock);
}
#endif
RETURN_VOID();
}
/*
* public native void disableJitCompilation()
*
* Callback function from the framework to indicate that a VM instance wants to
* permanently disable the JIT compiler. Currently only the system server uses
* this interface when it detects system-wide safe mode is enabled.
*/
static void Dalvik_dalvik_system_VMRuntime_disableJitCompilation(const u4* args,
JValue* pResult)
{
#if defined(WITH_JIT)
if (gDvm.executionMode == kExecutionModeJit) {
gDvmJit.disableJit = true;
}
#endif
RETURN_VOID();
}
static void Dalvik_dalvik_system_VMRuntime_newNonMovableArray(const u4* args,
JValue* pResult)
{
ClassObject* elementClass = (ClassObject*) args[1];
int length = args[2];
ArrayObject* newArray;
if (elementClass == NULL) {
dvmThrowNullPointerException(NULL);
RETURN_VOID();
}
if (length < 0) {
dvmThrowNegativeArraySizeException(length);
RETURN_VOID();
}
// TODO: right now, we don't have a copying collector, so there's no need
// to do anything special here, but we ought to pass the non-movability
// through to the allocator.
newArray = dvmAllocObjectArray(elementClass, length, ALLOC_DEFAULT);
if (newArray == NULL) {
assert(dvmCheckException(dvmThreadSelf()));
RETURN_VOID();
}
dvmReleaseTrackedAlloc((Object*) newArray, NULL);
RETURN_PTR(newArray);
}
static void Dalvik_dalvik_system_VMRuntime_addressOf(const u4* args,
JValue* pResult)
{
ArrayObject* array = (ArrayObject*) args[1];
if (!dvmIsArray(array)) {
dvmThrowIllegalArgumentException(NULL);
RETURN_VOID();
}
// TODO: we should also check that this is a non-movable array.
s8 result = (uintptr_t) array->contents;
RETURN_LONG(result);
}
static void Dalvik_dalvik_system_VMRuntime_clearGrowthLimit(const u4* args,
JValue* pResult)
{
dvmClearGrowthLimit();
RETURN_VOID();
}
static void Dalvik_dalvik_system_VMRuntime_properties(const u4* args,
JValue* pResult)
{
char** strings = (char**) arrayUnwrap(gDvm.properties);
int count = arraySize(gDvm.properties);
ArrayObject* result = dvmCreateStringArray(strings, count);
dvmReleaseTrackedAlloc((Object*) result, dvmThreadSelf());
RETURN_PTR(result);
}
static void returnCString(JValue* pResult, const char* s)
{
Object* result = (Object*) dvmCreateStringFromCstr(s);
dvmReleaseTrackedAlloc(result, dvmThreadSelf());
RETURN_PTR(result);
}
static void Dalvik_dalvik_system_VMRuntime_bootClassPath(const u4* args,
JValue* pResult)
{
returnCString(pResult, gDvm.bootClassPathStr);
}
static void Dalvik_dalvik_system_VMRuntime_classPath(const u4* args,
JValue* pResult)
{
returnCString(pResult, gDvm.classPathStr);
}
static void Dalvik_dalvik_system_VMRuntime_vmVersion(const u4* args,
JValue* pResult)
{
char buf[64];
sprintf(buf, "%d.%d.%d",
DALVIK_MAJOR_VERSION, DALVIK_MINOR_VERSION, DALVIK_BUG_VERSION);
returnCString(pResult, buf);
}
const DalvikNativeMethod dvm_dalvik_system_VMRuntime[] = {
{ "addressOf", "(Ljava/lang/Object;)J",
Dalvik_dalvik_system_VMRuntime_addressOf },
{ "bootClassPath", "()Ljava/lang/String;",
Dalvik_dalvik_system_VMRuntime_bootClassPath },
{ "classPath", "()Ljava/lang/String;",
Dalvik_dalvik_system_VMRuntime_classPath },
{ "clearGrowthLimit", "()V",
Dalvik_dalvik_system_VMRuntime_clearGrowthLimit },
{ "disableJitCompilation", "()V",
Dalvik_dalvik_system_VMRuntime_disableJitCompilation },
{ "getTargetHeapUtilization", "()F",
Dalvik_dalvik_system_VMRuntime_getTargetHeapUtilization },
{ "nativeSetTargetHeapUtilization", "(F)V",
Dalvik_dalvik_system_VMRuntime_nativeSetTargetHeapUtilization },
{ "newNonMovableArray", "(Ljava/lang/Class;I)Ljava/lang/Object;",
Dalvik_dalvik_system_VMRuntime_newNonMovableArray },
{ "properties", "()[Ljava/lang/String;",
Dalvik_dalvik_system_VMRuntime_properties },
{ "startJitCompilation", "()V",
Dalvik_dalvik_system_VMRuntime_startJitCompilation },
{ "vmVersion", "()Ljava/lang/String;",
Dalvik_dalvik_system_VMRuntime_vmVersion },
{ NULL, NULL, NULL },
};
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