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gerrit-public.fairphone.software / platform / art / 653f2bf126ee55f0a8033d840040bb00d74ea593 / . / runtime / check_jni.cc
blob: 960c26dfdeed009b03efb85cf3e6b1e50bf9a025 [file] [log] [blame]
/*
* 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.
*/
#include "jni_internal.h"
#include <sys/mman.h>
#include <zlib.h>
#include "base/logging.h"
#include "class_linker.h"
#include "class_linker-inl.h"
#include "dex_file-inl.h"
#include "gc/space/space.h"
#include "mirror/art_field-inl.h"
#include "mirror/art_method-inl.h"
#include "mirror/class-inl.h"
#include "mirror/object-inl.h"
#include "mirror/object_array-inl.h"
#include "mirror/throwable.h"
#include "object_utils.h"
#include "runtime.h"
#include "scoped_thread_state_change.h"
#include "thread.h"
namespace art {
static void JniAbort(const char* jni_function_name, const char* msg) {
Thread* self = Thread::Current();
ScopedObjectAccess soa(self);
mirror::ArtMethod* current_method = self->GetCurrentMethod(nullptr);
std::ostringstream os;
os << "JNI DETECTED ERROR IN APPLICATION: " << msg;
if (jni_function_name != nullptr) {
os << "\n in call to " << jni_function_name;
}
// TODO: is this useful given that we're about to dump the calling thread's stack?
if (current_method != nullptr) {
os << "\n from " << PrettyMethod(current_method);
}
os << "\n";
self->Dump(os);
JavaVMExt* vm = Runtime::Current()->GetJavaVM();
if (vm->check_jni_abort_hook != nullptr) {
vm->check_jni_abort_hook(vm->check_jni_abort_hook_data, os.str());
} else {
// Ensure that we get a native stack trace for this thread.
self->TransitionFromRunnableToSuspended(kNative);
LOG(FATAL) << os.str();
self->TransitionFromSuspendedToRunnable(); // Unreachable, keep annotalysis happy.
}
}
static void JniAbortV(const char* jni_function_name, const char* fmt, va_list ap) {
std::string msg;
StringAppendV(&msg, fmt, ap);
JniAbort(jni_function_name, msg.c_str());
}
void JniAbortF(const char* jni_function_name, const char* fmt, ...) {
va_list args;
va_start(args, fmt);
JniAbortV(jni_function_name, fmt, args);
va_end(args);
}
/*
* ===========================================================================
* JNI function helpers
* ===========================================================================
*/
static bool IsSirtLocalRef(JNIEnv* env, jobject localRef) {
return GetIndirectRefKind(localRef) == kSirtOrInvalid &&
reinterpret_cast<JNIEnvExt*>(env)->self->SirtContains(localRef);
}
// Flags passed into ScopedCheck.
#define kFlag_Default 0x0000
#define kFlag_CritBad 0x0000 // Calling while in critical is not allowed.
#define kFlag_CritOkay 0x0001 // Calling while in critical is allowed.
#define kFlag_CritGet 0x0002 // This is a critical "get".
#define kFlag_CritRelease 0x0003 // This is a critical "release".
#define kFlag_CritMask 0x0003 // Bit mask to get "crit" value.
#define kFlag_ExcepBad 0x0000 // Raised exceptions are not allowed.
#define kFlag_ExcepOkay 0x0004 // Raised exceptions are allowed.
#define kFlag_Release 0x0010 // Are we in a non-critical release function?
#define kFlag_NullableUtf 0x0020 // Are our UTF parameters nullable?
#define kFlag_Invocation 0x8000 // Part of the invocation interface (JavaVM*).
#define kFlag_ForceTrace 0x80000000 // Add this to a JNI function's flags if you want to trace every call.
static const char* gBuiltInPrefixes[] = {
"Landroid/",
"Lcom/android/",
"Lcom/google/android/",
"Ldalvik/",
"Ljava/",
"Ljavax/",
"Llibcore/",
"Lorg/apache/harmony/",
nullptr
};
static bool ShouldTrace(JavaVMExt* vm, mirror::ArtMethod* method)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
// If both "-Xcheck:jni" and "-Xjnitrace:" are enabled, we print trace messages
// when a native method that matches the -Xjnitrace argument calls a JNI function
// such as NewByteArray.
// If -verbose:third-party-jni is on, we want to log any JNI function calls
// made by a third-party native method.
std::string class_name(MethodHelper(method).GetDeclaringClassDescriptor());
if (!vm->trace.empty() && class_name.find(vm->trace) != std::string::npos) {
return true;
}
if (VLOG_IS_ON(third_party_jni)) {
// Return true if we're trying to log all third-party JNI activity and 'method' doesn't look
// like part of Android.
for (size_t i = 0; gBuiltInPrefixes[i] != nullptr; ++i) {
if (StartsWith(class_name, gBuiltInPrefixes[i])) {
return false;
}
}
return true;
}
return false;
}
class ScopedCheck {
public:
// For JNIEnv* functions.
explicit ScopedCheck(JNIEnv* env, int flags, const char* functionName)
SHARED_LOCK_FUNCTION(Locks::mutator_lock_)
: soa_(env) {
Init(flags, functionName, true);
CheckThread(flags);
}
// For JavaVM* functions.
// TODO: it's not correct that this is a lock function, but making it so aids annotalysis.
explicit ScopedCheck(JavaVM* vm, bool has_method, const char* functionName)
SHARED_LOCK_FUNCTION(Locks::mutator_lock_)
: soa_(vm) {
Init(kFlag_Invocation, functionName, has_method);
}
~ScopedCheck() UNLOCK_FUNCTION(Locks::mutator_lock_) {}
const ScopedObjectAccess& soa() {
return soa_;
}
bool ForceCopy() {
return Runtime::Current()->GetJavaVM()->force_copy;
}
// Checks that 'class_name' is a valid "fully-qualified" JNI class name, like "java/lang/Thread"
// or "[Ljava/lang/Object;". A ClassLoader can actually normalize class names a couple of
// times, so using "java.lang.Thread" instead of "java/lang/Thread" might work in some
// circumstances, but this is incorrect.
void CheckClassName(const char* class_name) {
if (!IsValidJniClassName(class_name)) {
JniAbortF(function_name_,
"illegal class name '%s'\n"
" (should be of the form 'package/Class', [Lpackage/Class;' or '[[B')",
class_name);
}
}
/*
* Verify that the field is of the appropriate type. If the field has an
* object type, "java_object" is the object we're trying to assign into it.
*
* Works for both static and instance fields.
*/
void CheckFieldType(jvalue value, jfieldID fid, char prim, bool isStatic)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
mirror::ArtField* f = CheckFieldID(fid);
if (f == nullptr) {
return;
}
mirror::Class* field_type = FieldHelper(f).GetType();
if (!field_type->IsPrimitive()) {
jobject java_object = value.l;
if (java_object != nullptr) {
mirror::Object* obj = soa_.Decode<mirror::Object*>(java_object);
// If java_object is a weak global ref whose referent has been cleared,
// obj will be NULL. Otherwise, obj should always be non-NULL
// and valid.
if (!Runtime::Current()->GetHeap()->IsValidObjectAddress(obj)) {
Runtime::Current()->GetHeap()->DumpSpaces();
JniAbortF(function_name_, "field operation on invalid %s: %p",
ToStr<IndirectRefKind>(GetIndirectRefKind(java_object)).c_str(), java_object);
return;
} else {
if (!obj->InstanceOf(field_type)) {
JniAbortF(function_name_, "attempt to set field %s with value of wrong type: %s",
PrettyField(f).c_str(), PrettyTypeOf(obj).c_str());
return;
}
}
}
} else if (field_type != Runtime::Current()->GetClassLinker()->FindPrimitiveClass(prim)) {
JniAbortF(function_name_, "attempt to set field %s with value of wrong type: %c",
PrettyField(f).c_str(), prim);
return;
}
if (isStatic != f->IsStatic()) {
if (isStatic) {
JniAbortF(function_name_, "accessing non-static field %s as static", PrettyField(f).c_str());
} else {
JniAbortF(function_name_, "accessing static field %s as non-static", PrettyField(f).c_str());
}
return;
}
}
/*
* Verify that this instance field ID is valid for this object.
*
* Assumes "jobj" has already been validated.
*/
void CheckInstanceFieldID(jobject java_object, jfieldID fid)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
mirror::Object* o = soa_.Decode<mirror::Object*>(java_object);
if (o == nullptr || !Runtime::Current()->GetHeap()->IsValidObjectAddress(o)) {
Runtime::Current()->GetHeap()->DumpSpaces();
JniAbortF(function_name_, "field operation on invalid %s: %p",
ToStr<IndirectRefKind>(GetIndirectRefKind(java_object)).c_str(), java_object);
return;
}
mirror::ArtField* f = CheckFieldID(fid);
if (f == nullptr) {
return;
}
mirror::Class* c = o->GetClass();
FieldHelper fh(f);
if (c->FindInstanceField(fh.GetName(), fh.GetTypeDescriptor()) == nullptr) {
JniAbortF(function_name_, "jfieldID %s not valid for an object of class %s",
PrettyField(f).c_str(), PrettyTypeOf(o).c_str());
}
}
/*
* Verify that the pointer value is non-NULL.
*/
void CheckNonNull(const void* ptr) {
if (ptr == nullptr) {
JniAbortF(function_name_, "non-nullable argument was NULL");
}
}
/*
* Verify that the method's return type matches the type of call.
* 'expectedType' will be "L" for all objects, including arrays.
*/
void CheckSig(jmethodID mid, const char* expectedType, bool isStatic)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
mirror::ArtMethod* m = CheckMethodID(mid);
if (m == nullptr) {
return;
}
if (*expectedType != MethodHelper(m).GetShorty()[0]) {
JniAbortF(function_name_, "the return type of %s does not match %s",
function_name_, PrettyMethod(m).c_str());
}
if (isStatic != m->IsStatic()) {
if (isStatic) {
JniAbortF(function_name_, "calling non-static method %s with %s",
PrettyMethod(m).c_str(), function_name_);
} else {
JniAbortF(function_name_, "calling static method %s with %s",
PrettyMethod(m).c_str(), function_name_);
}
}
}
/*
* Verify that this static field ID is valid for this class.
*
* Assumes "java_class" has already been validated.
*/
void CheckStaticFieldID(jclass java_class, jfieldID fid)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
mirror::Class* c = soa_.Decode<mirror::Class*>(java_class);
mirror::ArtField* f = CheckFieldID(fid);
if (f == nullptr) {
return;
}
if (f->GetDeclaringClass() != c) {
JniAbortF(function_name_, "static jfieldID %p not valid for class %s",
fid, PrettyClass(c).c_str());
}
}
/*
* Verify that "mid" is appropriate for "java_class".
*
* A mismatch isn't dangerous, because the jmethodID defines the class. In
* fact, java_class is unused in the implementation. It's best if we don't
* allow bad code in the system though.
*
* Instances of "java_class" must be instances of the method's declaring class.
*/
void CheckStaticMethod(jclass java_class, jmethodID mid)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
mirror::ArtMethod* m = CheckMethodID(mid);
if (m == nullptr) {
return;
}
mirror::Class* c = soa_.Decode<mirror::Class*>(java_class);
if (!m->GetDeclaringClass()->IsAssignableFrom(c)) {
JniAbortF(function_name_, "can't call static %s on class %s",
PrettyMethod(m).c_str(), PrettyClass(c).c_str());
}
}
/*
* Verify that "mid" is appropriate for "jobj".
*
* Make sure the object is an instance of the method's declaring class.
* (Note the mid might point to a declaration in an interface; this
* will be handled automatically by the instanceof check.)
*/
void CheckVirtualMethod(jobject java_object, jmethodID mid)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
mirror::ArtMethod* m = CheckMethodID(mid);
if (m == nullptr) {
return;
}
mirror::Object* o = soa_.Decode<mirror::Object*>(java_object);
if (!o->InstanceOf(m->GetDeclaringClass())) {
JniAbortF(function_name_, "can't call %s on instance of %s",
PrettyMethod(m).c_str(), PrettyTypeOf(o).c_str());
}
}
/**
* The format string is a sequence of the following characters,
* and must be followed by arguments of the corresponding types
* in the same order.
*
* Java primitive types:
* B - jbyte
* C - jchar
* D - jdouble
* F - jfloat
* I - jint
* J - jlong
* S - jshort
* Z - jboolean (shown as true and false)
* V - void
*
* Java reference types:
* L - jobject
* a - jarray
* c - jclass
* s - jstring
*
* JNI types:
* b - jboolean (shown as JNI_TRUE and JNI_FALSE)
* f - jfieldID
* m - jmethodID
* p - void*
* r - jint (for release mode arguments)
* u - const char* (Modified UTF-8)
* z - jsize (for lengths; use i if negative values are okay)
* v - JavaVM*
* E - JNIEnv*
* . - no argument; just print "..." (used for varargs JNI calls)
*
* Use the kFlag_NullableUtf flag where 'u' field(s) are nullable.
*/
void Check(bool entry, const char* fmt0, ...) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
va_list ap;
mirror::ArtMethod* traceMethod = nullptr;
if (has_method_ && (!soa_.Vm()->trace.empty() || VLOG_IS_ON(third_party_jni))) {
// We need to guard some of the invocation interface's calls: a bad caller might
// use DetachCurrentThread or GetEnv on a thread that's not yet attached.
Thread* self = Thread::Current();
if ((flags_ & kFlag_Invocation) == 0 || self != nullptr) {
traceMethod = self->GetCurrentMethod(nullptr);
}
}
if (((flags_ & kFlag_ForceTrace) != 0) ||
(traceMethod != nullptr && ShouldTrace(soa_.Vm(), traceMethod))) {
va_start(ap, fmt0);
std::string msg;
for (const char* fmt = fmt0; *fmt;) {
char ch = *fmt++;
if (ch == 'B') { // jbyte
jbyte b = va_arg(ap, int);
if (b >= 0 && b < 10) {
StringAppendF(&msg, "%d", b);
} else {
StringAppendF(&msg, "%#x (%d)", b, b);
}
} else if (ch == 'C') { // jchar
jchar c = va_arg(ap, int);
if (c < 0x7f && c >= ' ') {
StringAppendF(&msg, "U+%x ('%c')", c, c);
} else {
StringAppendF(&msg, "U+%x", c);
}
} else if (ch == 'F' || ch == 'D') { // jfloat, jdouble
StringAppendF(&msg, "%g", va_arg(ap, double));
} else if (ch == 'I' || ch == 'S') { // jint, jshort
StringAppendF(&msg, "%d", va_arg(ap, int));
} else if (ch == 'J') { // jlong
StringAppendF(&msg, "%" PRId64, va_arg(ap, jlong));
} else if (ch == 'Z') { // jboolean
StringAppendF(&msg, "%s", va_arg(ap, int) ? "true" : "false");
} else if (ch == 'V') { // void
msg += "void";
} else if (ch == 'v') { // JavaVM*
JavaVM* vm = va_arg(ap, JavaVM*);
StringAppendF(&msg, "(JavaVM*)%p", vm);
} else if (ch == 'E') { // JNIEnv*
JNIEnv* env = va_arg(ap, JNIEnv*);
StringAppendF(&msg, "(JNIEnv*)%p", env);
} else if (ch == 'L' || ch == 'a' || ch == 's') { // jobject, jarray, jstring
// For logging purposes, these are identical.
jobject o = va_arg(ap, jobject);
if (o == nullptr) {
msg += "NULL";
} else {
StringAppendF(&msg, "%p", o);
}
} else if (ch == 'b') { // jboolean (JNI-style)
jboolean b = va_arg(ap, int);
msg += (b ? "JNI_TRUE" : "JNI_FALSE");
} else if (ch == 'c') { // jclass
jclass jc = va_arg(ap, jclass);
mirror::Class* c = reinterpret_cast<mirror::Class*>(Thread::Current()->DecodeJObject(jc));
if (c == nullptr) {
msg += "NULL";
} else if (c == kInvalidIndirectRefObject ||
!Runtime::Current()->GetHeap()->IsValidObjectAddress(c)) {
StringAppendF(&msg, "INVALID POINTER:%p", jc);
} else if (!c->IsClass()) {
msg += "INVALID NON-CLASS OBJECT OF TYPE:" + PrettyTypeOf(c);
} else {
msg += PrettyClass(c);
if (!entry) {
StringAppendF(&msg, " (%p)", jc);
}
}
} else if (ch == 'f') { // jfieldID
jfieldID fid = va_arg(ap, jfieldID);
mirror::ArtField* f = reinterpret_cast<mirror::ArtField*>(fid);
msg += PrettyField(f);
if (!entry) {
StringAppendF(&msg, " (%p)", fid);
}
} else if (ch == 'z') { // non-negative jsize
// You might expect jsize to be size_t, but it's not; it's the same as jint.
// We only treat this specially so we can do the non-negative check.
// TODO: maybe this wasn't worth it?
jint i = va_arg(ap, jint);
StringAppendF(&msg, "%d", i);
} else if (ch == 'm') { // jmethodID
jmethodID mid = va_arg(ap, jmethodID);
mirror::ArtMethod* m = reinterpret_cast<mirror::ArtMethod*>(mid);
msg += PrettyMethod(m);
if (!entry) {
StringAppendF(&msg, " (%p)", mid);
}
} else if (ch == 'p') { // void* ("pointer")
void* p = va_arg(ap, void*);
if (p == nullptr) {
msg += "NULL";
} else {
StringAppendF(&msg, "(void*) %p", p);
}
} else if (ch == 'r') { // jint (release mode)
jint releaseMode = va_arg(ap, jint);
if (releaseMode == 0) {
msg += "0";
} else if (releaseMode == JNI_ABORT) {
msg += "JNI_ABORT";
} else if (releaseMode == JNI_COMMIT) {
msg += "JNI_COMMIT";
} else {
StringAppendF(&msg, "invalid release mode %d", releaseMode);
}
} else if (ch == 'u') { // const char* (Modified UTF-8)
const char* utf = va_arg(ap, const char*);
if (utf == nullptr) {
msg += "NULL";
} else {
StringAppendF(&msg, "\"%s\"", utf);
}
} else if (ch == '.') {
msg += "...";
} else {
JniAbortF(function_name_, "unknown trace format specifier: %c", ch);
return;
}
if (*fmt) {
StringAppendF(&msg, ", ");
}
}
va_end(ap);
if ((flags_ & kFlag_ForceTrace) != 0) {
LOG(INFO) << "JNI: call to " << function_name_ << "(" << msg << ")";
} else if (entry) {
if (has_method_) {
std::string methodName(PrettyMethod(traceMethod, false));
LOG(INFO) << "JNI: " << methodName << " -> " << function_name_ << "(" << msg << ")";
indent_ = methodName.size() + 1;
} else {
LOG(INFO) << "JNI: -> " << function_name_ << "(" << msg << ")";
indent_ = 0;
}
} else {
LOG(INFO) << StringPrintf("JNI: %*s<- %s returned %s", indent_, "", function_name_, msg.c_str());
}
}
// We always do the thorough checks on entry, and never on exit...
if (entry) {
va_start(ap, fmt0);
for (const char* fmt = fmt0; *fmt; ++fmt) {
char ch = *fmt;
if (ch == 'a') {
CheckArray(va_arg(ap, jarray));
} else if (ch == 'c') {
CheckInstance(kClass, va_arg(ap, jclass));
} else if (ch == 'L') {
CheckObject(va_arg(ap, jobject));
} else if (ch == 'r') {
CheckReleaseMode(va_arg(ap, jint));
} else if (ch == 's') {
CheckInstance(kString, va_arg(ap, jstring));
} else if (ch == 'u') {
if ((flags_ & kFlag_Release) != 0) {
CheckNonNull(va_arg(ap, const char*));
} else {
bool nullable = ((flags_ & kFlag_NullableUtf) != 0);
CheckUtfString(va_arg(ap, const char*), nullable);
}
} else if (ch == 'z') {
CheckLengthPositive(va_arg(ap, jsize));
} else if (strchr("BCISZbfmpEv", ch) != nullptr) {
va_arg(ap, uint32_t); // Skip this argument.
} else if (ch == 'D' || ch == 'F') {
va_arg(ap, double); // Skip this argument.
} else if (ch == 'J') {
va_arg(ap, uint64_t); // Skip this argument.
} else if (ch == '.') {
} else {
LOG(FATAL) << "Unknown check format specifier: " << ch;
}
}
va_end(ap);
}
}
enum InstanceKind {
kClass,
kDirectByteBuffer,
kObject,
kString,
kThrowable,
};
/*
* Verify that "jobj" is a valid non-NULL object reference, and points to
* an instance of expectedClass.
*
* Because we're looking at an object on the GC heap, we have to switch
* to "running" mode before doing the checks.
*/
bool CheckInstance(InstanceKind kind, jobject java_object)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
const char* what = nullptr;
switch (kind) {
case kClass:
what = "jclass";
break;
case kDirectByteBuffer:
what = "direct ByteBuffer";
break;
case kObject:
what = "jobject";
break;
case kString:
what = "jstring";
break;
case kThrowable:
what = "jthrowable";
break;
default:
LOG(FATAL) << "Unknown kind " << static_cast<int>(kind);
}
if (java_object == nullptr) {
JniAbortF(function_name_, "%s received null %s", function_name_, what);
return false;
}
mirror::Object* obj = soa_.Decode<mirror::Object*>(java_object);
if (!Runtime::Current()->GetHeap()->IsValidObjectAddress(obj)) {
Runtime::Current()->GetHeap()->DumpSpaces();
JniAbortF(function_name_, "%s is an invalid %s: %p (%p)",
what, ToStr<IndirectRefKind>(GetIndirectRefKind(java_object)).c_str(), java_object, obj);
return false;
}
bool okay = true;
switch (kind) {
case kClass:
okay = obj->IsClass();
break;
case kDirectByteBuffer:
UNIMPLEMENTED(FATAL);
break;
case kString:
okay = obj->GetClass()->IsStringClass();
break;
case kThrowable:
okay = obj->GetClass()->IsThrowableClass();
break;
case kObject:
break;
}
if (!okay) {
JniAbortF(function_name_, "%s has wrong type: %s", what, PrettyTypeOf(obj).c_str());
return false;
}
return true;
}
private:
// Set "has_method" to true if we have a valid thread with a method pointer.
// We won't have one before attaching a thread, after detaching a thread, or
// when shutting down the runtime.
void Init(int flags, const char* functionName, bool has_method) {
flags_ = flags;
function_name_ = functionName;
has_method_ = has_method;
}
/*
* Verify that "array" is non-NULL and points to an Array object.
*
* Since we're dealing with objects, switch to "running" mode.
*/
void CheckArray(jarray java_array) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
if (java_array == nullptr) {
JniAbortF(function_name_, "jarray was NULL");
return;
}
mirror::Array* a = soa_.Decode<mirror::Array*>(java_array);
if (!Runtime::Current()->GetHeap()->IsValidObjectAddress(a)) {
Runtime::Current()->GetHeap()->DumpSpaces();
JniAbortF(function_name_, "jarray is an invalid %s: %p (%p)",
ToStr<IndirectRefKind>(GetIndirectRefKind(java_array)).c_str(), java_array, a);
} else if (!a->IsArrayInstance()) {
JniAbortF(function_name_, "jarray argument has non-array type: %s", PrettyTypeOf(a).c_str());
}
}
void CheckLengthPositive(jsize length) {
if (length < 0) {
JniAbortF(function_name_, "negative jsize: %d", length);
}
}
mirror::ArtField* CheckFieldID(jfieldID fid) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
if (fid == nullptr) {
JniAbortF(function_name_, "jfieldID was NULL");
return nullptr;
}
mirror::ArtField* f = soa_.DecodeField(fid);
if (!Runtime::Current()->GetHeap()->IsValidObjectAddress(f) || !f->IsArtField()) {
Runtime::Current()->GetHeap()->DumpSpaces();
JniAbortF(function_name_, "invalid jfieldID: %p", fid);
return nullptr;
}
return f;
}
mirror::ArtMethod* CheckMethodID(jmethodID mid) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
if (mid == nullptr) {
JniAbortF(function_name_, "jmethodID was NULL");
return nullptr;
}
mirror::ArtMethod* m = soa_.DecodeMethod(mid);
if (!Runtime::Current()->GetHeap()->IsValidObjectAddress(m) || !m->IsArtMethod()) {
Runtime::Current()->GetHeap()->DumpSpaces();
JniAbortF(function_name_, "invalid jmethodID: %p", mid);
return nullptr;
}
return m;
}
/*
* Verify that "jobj" is a valid object, and that it's an object that JNI
* is allowed to know about. We allow NULL references.
*
* Switches to "running" mode before performing checks.
*/
void CheckObject(jobject java_object)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
if (java_object == nullptr) {
return;
}
mirror::Object* o = soa_.Decode<mirror::Object*>(java_object);
if (!Runtime::Current()->GetHeap()->IsValidObjectAddress(o)) {
Runtime::Current()->GetHeap()->DumpSpaces();
// TODO: when we remove work_around_app_jni_bugs, this should be impossible.
JniAbortF(function_name_, "native code passing in reference to invalid %s: %p",
ToStr<IndirectRefKind>(GetIndirectRefKind(java_object)).c_str(), java_object);
}
}
/*
* Verify that the "mode" argument passed to a primitive array Release
* function is one of the valid values.
*/
void CheckReleaseMode(jint mode) {
if (mode != 0 && mode != JNI_COMMIT && mode != JNI_ABORT) {
JniAbortF(function_name_, "unknown value for release mode: %d", mode);
}
}
void CheckThread(int flags) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
Thread* self = Thread::Current();
if (self == nullptr) {
JniAbortF(function_name_, "a thread (tid %d) is making JNI calls without being attached", GetTid());
return;
}
// Get the *correct* JNIEnv by going through our TLS pointer.
JNIEnvExt* threadEnv = self->GetJniEnv();
// Verify that the current thread is (a) attached and (b) associated with
// this particular instance of JNIEnv.
if (soa_.Env() != threadEnv) {
if (soa_.Vm()->work_around_app_jni_bugs) {
// If we're keeping broken code limping along, we need to suppress the abort...
LOG(ERROR) << "APP BUG DETECTED: thread " << *self << " using JNIEnv* from thread " << *soa_.Self();
} else {
JniAbortF(function_name_, "thread %s using JNIEnv* from thread %s",
ToStr<Thread>(*self).c_str(), ToStr<Thread>(*soa_.Self()).c_str());
return;
}
}
// Verify that, if this thread previously made a critical "get" call, we
// do the corresponding "release" call before we try anything else.
switch (flags & kFlag_CritMask) {
case kFlag_CritOkay: // okay to call this method
break;
case kFlag_CritBad: // not okay to call
if (threadEnv->critical) {
JniAbortF(function_name_, "thread %s using JNI after critical get", ToStr<Thread>(*self).c_str());
return;
}
break;
case kFlag_CritGet: // this is a "get" call
// Don't check here; we allow nested gets.
threadEnv->critical++;
break;
case kFlag_CritRelease: // this is a "release" call
threadEnv->critical--;
if (threadEnv->critical < 0) {
JniAbortF(function_name_, "thread %s called too many critical releases", ToStr<Thread>(*self).c_str());
return;
}
break;
default:
LOG(FATAL) << "Bad flags (internal error): " << flags;
}
// Verify that, if an exception has been raised, the native code doesn't
// make any JNI calls other than the Exception* methods.
if ((flags & kFlag_ExcepOkay) == 0 && self->IsExceptionPending()) {
ThrowLocation throw_location;
mirror::Throwable* exception = self->GetException(&throw_location);
std::string type(PrettyTypeOf(exception));
JniAbortF(function_name_, "JNI %s called with pending exception '%s' thrown in %s",
function_name_, type.c_str(), throw_location.Dump().c_str());
return;
}
}
// Verifies that "bytes" points to valid Modified UTF-8 data.
void CheckUtfString(const char* bytes, bool nullable) {
if (bytes == nullptr) {
if (!nullable) {
JniAbortF(function_name_, "non-nullable const char* was NULL");
return;
}
return;
}
const char* errorKind = nullptr;
uint8_t utf8 = CheckUtfBytes(bytes, &errorKind);
if (errorKind != nullptr) {
JniAbortF(function_name_,
"input is not valid Modified UTF-8: illegal %s byte %#x\n"
" string: '%s'", errorKind, utf8, bytes);
return;
}
}
static uint8_t CheckUtfBytes(const char* bytes, const char** errorKind) {
while (*bytes != '\0') {
uint8_t utf8 = *(bytes++);
// Switch on the high four bits.
switch (utf8 >> 4) {
case 0x00:
case 0x01:
case 0x02:
case 0x03:
case 0x04:
case 0x05:
case 0x06:
case 0x07:
// Bit pattern 0xxx. No need for any extra bytes.
break;
case 0x08:
case 0x09:
case 0x0a:
case 0x0b:
case 0x0f:
/*
* Bit pattern 10xx or 1111, which are illegal start bytes.
* Note: 1111 is valid for normal UTF-8, but not the
* Modified UTF-8 used here.
*/
*errorKind = "start";
return utf8;
case 0x0e:
// Bit pattern 1110, so there are two additional bytes.
utf8 = *(bytes++);
if ((utf8 & 0xc0) != 0x80) {
*errorKind = "continuation";
return utf8;
}
// Fall through to take care of the final byte.
case 0x0c:
case 0x0d:
// Bit pattern 110x, so there is one additional byte.
utf8 = *(bytes++);
if ((utf8 & 0xc0) != 0x80) {
*errorKind = "continuation";
return utf8;
}
break;
}
}
return 0;
}
const ScopedObjectAccess soa_;
const char* function_name_;
int flags_;
bool has_method_;
int indent_;
DISALLOW_COPY_AND_ASSIGN(ScopedCheck);
};
#define CHECK_JNI_ENTRY(flags, types, args...) \
ScopedCheck sc(env, flags, __FUNCTION__); \
sc.Check(true, types, ##args)
#define CHECK_JNI_EXIT(type, exp) ({ \
auto _rc = (exp); \
sc.Check(false, type, _rc); \
_rc; })
#define CHECK_JNI_EXIT_VOID() \
sc.Check(false, "V")
/*
* ===========================================================================
* Guarded arrays
* ===========================================================================
*/
#define kGuardLen 512 /* must be multiple of 2 */
#define kGuardPattern 0xd5e3 /* uncommon values; d5e3d5e3 invalid addr */
#define kGuardMagic 0xffd5aa96
/* this gets tucked in at the start of the buffer; struct size must be even */
struct GuardedCopy {
uint32_t magic;
uLong adler;
size_t original_length;
const void* original_ptr;
/* find the GuardedCopy given the pointer into the "live" data */
static inline const GuardedCopy* FromData(const void* dataBuf) {
return reinterpret_cast<const GuardedCopy*>(ActualBuffer(dataBuf));
}
/*
* Create an over-sized buffer to hold the contents of "buf". Copy it in,
* filling in the area around it with guard data.
*
* We use a 16-bit pattern to make a rogue memset less likely to elude us.
*/
static void* Create(const void* buf, size_t len, bool modOkay) {
size_t newLen = ActualLength(len);
uint8_t* newBuf = DebugAlloc(newLen);
// Fill it in with a pattern.
uint16_t* pat = reinterpret_cast<uint16_t*>(newBuf);
for (size_t i = 0; i < newLen / 2; i++) {
*pat++ = kGuardPattern;
}
// Copy the data in; note "len" could be zero.
memcpy(newBuf + kGuardLen / 2, buf, len);
// If modification is not expected, grab a checksum.
uLong adler = 0;
if (!modOkay) {
adler = adler32(0L, Z_NULL, 0);
adler = adler32(adler, reinterpret_cast<const Bytef*>(buf), len);
*reinterpret_cast<uLong*>(newBuf) = adler;
}
GuardedCopy* pExtra = reinterpret_cast<GuardedCopy*>(newBuf);
pExtra->magic = kGuardMagic;
pExtra->adler = adler;
pExtra->original_ptr = buf;
pExtra->original_length = len;
return newBuf + kGuardLen / 2;
}
/*
* Free up the guard buffer, scrub it, and return the original pointer.
*/
static void* Destroy(void* dataBuf) {
const GuardedCopy* pExtra = GuardedCopy::FromData(dataBuf);
void* original_ptr = const_cast<void*>(pExtra->original_ptr);
size_t len = pExtra->original_length;
DebugFree(dataBuf, len);
return original_ptr;
}
/*
* Verify the guard area and, if "modOkay" is false, that the data itself
* has not been altered.
*
* The caller has already checked that "dataBuf" is non-NULL.
*/
static void Check(const char* functionName, const void* dataBuf, bool modOkay) {
static const uint32_t kMagicCmp = kGuardMagic;
const uint8_t* fullBuf = ActualBuffer(dataBuf);
const GuardedCopy* pExtra = GuardedCopy::FromData(dataBuf);
// Before we do anything with "pExtra", check the magic number. We
// do the check with memcmp rather than "==" in case the pointer is
// unaligned. If it points to completely bogus memory we're going
// to crash, but there's no easy way around that.
if (memcmp(&pExtra->magic, &kMagicCmp, 4) != 0) {
uint8_t buf[4];
memcpy(buf, &pExtra->magic, 4);
JniAbortF(functionName,
"guard magic does not match (found 0x%02x%02x%02x%02x) -- incorrect data pointer %p?",
buf[3], buf[2], buf[1], buf[0], dataBuf); // Assumes little-endian.
}
size_t len = pExtra->original_length;
// Check bottom half of guard; skip over optional checksum storage.
const uint16_t* pat = reinterpret_cast<const uint16_t*>(fullBuf);
for (size_t i = sizeof(GuardedCopy) / 2; i < (kGuardLen / 2 - sizeof(GuardedCopy)) / 2; i++) {
if (pat[i] != kGuardPattern) {
JniAbortF(functionName, "guard pattern(1) disturbed at %p +%zd", fullBuf, i*2);
}
}
int offset = kGuardLen / 2 + len;
if (offset & 0x01) {
// Odd byte; expected value depends on endian.
const uint16_t patSample = kGuardPattern;
uint8_t expected_byte = reinterpret_cast<const uint8_t*>(&patSample)[1];
if (fullBuf[offset] != expected_byte) {
JniAbortF(functionName, "guard pattern disturbed in odd byte after %p +%d 0x%02x 0x%02x",
fullBuf, offset, fullBuf[offset], expected_byte);
}
offset++;
}
// Check top half of guard.
pat = reinterpret_cast<const uint16_t*>(fullBuf + offset);
for (size_t i = 0; i < kGuardLen / 4; i++) {
if (pat[i] != kGuardPattern) {
JniAbortF(functionName, "guard pattern(2) disturbed at %p +%zd", fullBuf, offset + i*2);
}
}
// If modification is not expected, verify checksum. Strictly speaking
// this is wrong: if we told the client that we made a copy, there's no
// reason they can't alter the buffer.
if (!modOkay) {
uLong adler = adler32(0L, Z_NULL, 0);
adler = adler32(adler, (const Bytef*)dataBuf, len);
if (pExtra->adler != adler) {
JniAbortF(functionName, "buffer modified (0x%08lx vs 0x%08lx) at address %p",
pExtra->adler, adler, dataBuf);
}
}
}
private:
static uint8_t* DebugAlloc(size_t len) {
void* result = mmap(nullptr, len, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
if (result == MAP_FAILED) {
PLOG(FATAL) << "GuardedCopy::create mmap(" << len << ") failed";
}
return reinterpret_cast<uint8_t*>(result);
}
static void DebugFree(void* dataBuf, size_t len) {
uint8_t* fullBuf = ActualBuffer(dataBuf);
size_t totalByteCount = ActualLength(len);
// TODO: we could mprotect instead, and keep the allocation around for a while.
// This would be even more expensive, but it might catch more errors.
// if (mprotect(fullBuf, totalByteCount, PROT_NONE) != 0) {
// PLOG(WARNING) << "mprotect(PROT_NONE) failed";
// }
if (munmap(fullBuf, totalByteCount) != 0) {
PLOG(FATAL) << "munmap(" << reinterpret_cast<void*>(fullBuf) << ", " << totalByteCount << ") failed";
}
}
static const uint8_t* ActualBuffer(const void* dataBuf) {
return reinterpret_cast<const uint8_t*>(dataBuf) - kGuardLen / 2;
}
static uint8_t* ActualBuffer(void* dataBuf) {
return reinterpret_cast<uint8_t*>(dataBuf) - kGuardLen / 2;
}
// Underlying length of a user allocation of 'length' bytes.
static size_t ActualLength(size_t length) {
return (length + kGuardLen + 1) & ~0x01;
}
};
/*
* Create a guarded copy of a primitive array. Modifications to the copied
* data are allowed. Returns a pointer to the copied data.
*/
static void* CreateGuardedPACopy(JNIEnv* env, const jarray java_array, jboolean* isCopy) {
ScopedObjectAccess soa(env);
mirror::Array* a = soa.Decode<mirror::Array*>(java_array);
size_t component_size = a->GetClass()->GetComponentSize();
size_t byte_count = a->GetLength() * component_size;
void* result = GuardedCopy::Create(a->GetRawData(component_size, 0), byte_count, true);
if (isCopy != nullptr) {
*isCopy = JNI_TRUE;
}
return result;
}
/*
* Perform the array "release" operation, which may or may not copy data
* back into the managed heap, and may or may not release the underlying storage.
*/
static void ReleaseGuardedPACopy(JNIEnv* env, jarray java_array, void* dataBuf, int mode) {
ScopedObjectAccess soa(env);
mirror::Array* a = soa.Decode<mirror::Array*>(java_array);
GuardedCopy::Check(__FUNCTION__, dataBuf, true);
if (mode != JNI_ABORT) {
size_t len = GuardedCopy::FromData(dataBuf)->original_length;
memcpy(a->GetRawData(a->GetClass()->GetComponentSize(), 0), dataBuf, len);
}
if (mode != JNI_COMMIT) {
GuardedCopy::Destroy(dataBuf);
}
}
/*
* ===========================================================================
* JNI functions
* ===========================================================================
*/
class CheckJNI {
public:
static jint GetVersion(JNIEnv* env) {
CHECK_JNI_ENTRY(kFlag_Default, "E", env);
return CHECK_JNI_EXIT("I", baseEnv(env)->GetVersion(env));
}
static jclass DefineClass(JNIEnv* env, const char* name, jobject loader, const jbyte* buf, jsize bufLen) {
CHECK_JNI_ENTRY(kFlag_Default, "EuLpz", env, name, loader, buf, bufLen);
sc.CheckClassName(name);
return CHECK_JNI_EXIT("c", baseEnv(env)->DefineClass(env, name, loader, buf, bufLen));
}
static jclass FindClass(JNIEnv* env, const char* name) {
CHECK_JNI_ENTRY(kFlag_Default, "Eu", env, name);
sc.CheckClassName(name);
return CHECK_JNI_EXIT("c", baseEnv(env)->FindClass(env, name));
}
static jclass GetSuperclass(JNIEnv* env, jclass c) {
CHECK_JNI_ENTRY(kFlag_Default, "Ec", env, c);
return CHECK_JNI_EXIT("c", baseEnv(env)->GetSuperclass(env, c));
}
static jboolean IsAssignableFrom(JNIEnv* env, jclass c1, jclass c2) {
CHECK_JNI_ENTRY(kFlag_Default, "Ecc", env, c1, c2);
return CHECK_JNI_EXIT("b", baseEnv(env)->IsAssignableFrom(env, c1, c2));
}
static jmethodID FromReflectedMethod(JNIEnv* env, jobject method) {
CHECK_JNI_ENTRY(kFlag_Default, "EL", env, method);
// TODO: check that 'field' is a java.lang.reflect.Method.
return CHECK_JNI_EXIT("m", baseEnv(env)->FromReflectedMethod(env, method));
}
static jfieldID FromReflectedField(JNIEnv* env, jobject field) {
CHECK_JNI_ENTRY(kFlag_Default, "EL", env, field);
// TODO: check that 'field' is a java.lang.reflect.Field.
return CHECK_JNI_EXIT("f", baseEnv(env)->FromReflectedField(env, field));
}
static jobject ToReflectedMethod(JNIEnv* env, jclass cls, jmethodID mid, jboolean isStatic) {
CHECK_JNI_ENTRY(kFlag_Default, "Ecmb", env, cls, mid, isStatic);
return CHECK_JNI_EXIT("L", baseEnv(env)->ToReflectedMethod(env, cls, mid, isStatic));
}
static jobject ToReflectedField(JNIEnv* env, jclass cls, jfieldID fid, jboolean isStatic) {
CHECK_JNI_ENTRY(kFlag_Default, "Ecfb", env, cls, fid, isStatic);
return CHECK_JNI_EXIT("L", baseEnv(env)->ToReflectedField(env, cls, fid, isStatic));
}
static jint Throw(JNIEnv* env, jthrowable obj) {
CHECK_JNI_ENTRY(kFlag_Default, "EL", env, obj);
// TODO: check that 'obj' is a java.lang.Throwable.
return CHECK_JNI_EXIT("I", baseEnv(env)->Throw(env, obj));
}
static jint ThrowNew(JNIEnv* env, jclass c, const char* message) {
CHECK_JNI_ENTRY(kFlag_NullableUtf, "Ecu", env, c, message);
return CHECK_JNI_EXIT("I", baseEnv(env)->ThrowNew(env, c, message));
}
static jthrowable ExceptionOccurred(JNIEnv* env) {
CHECK_JNI_ENTRY(kFlag_ExcepOkay, "E", env);
return CHECK_JNI_EXIT("L", baseEnv(env)->ExceptionOccurred(env));
}
static void ExceptionDescribe(JNIEnv* env) {
CHECK_JNI_ENTRY(kFlag_ExcepOkay, "E", env);
baseEnv(env)->ExceptionDescribe(env);
CHECK_JNI_EXIT_VOID();
}
static void ExceptionClear(JNIEnv* env) {
CHECK_JNI_ENTRY(kFlag_ExcepOkay, "E", env);
baseEnv(env)->ExceptionClear(env);
CHECK_JNI_EXIT_VOID();
}
static void FatalError(JNIEnv* env, const char* msg) {
// The JNI specification doesn't say it's okay to call FatalError with a pending exception,
// but you're about to abort anyway, and it's quite likely that you have a pending exception,
// and it's not unimaginable that you don't know that you do. So we allow it.
CHECK_JNI_ENTRY(kFlag_ExcepOkay | kFlag_NullableUtf, "Eu", env, msg);
baseEnv(env)->FatalError(env, msg);
CHECK_JNI_EXIT_VOID();
}
static jint PushLocalFrame(JNIEnv* env, jint capacity) {
CHECK_JNI_ENTRY(kFlag_Default | kFlag_ExcepOkay, "EI", env, capacity);
return CHECK_JNI_EXIT("I", baseEnv(env)->PushLocalFrame(env, capacity));
}
static jobject PopLocalFrame(JNIEnv* env, jobject res) {
CHECK_JNI_ENTRY(kFlag_Default | kFlag_ExcepOkay, "EL", env, res);
return CHECK_JNI_EXIT("L", baseEnv(env)->PopLocalFrame(env, res));
}
static jobject NewGlobalRef(JNIEnv* env, jobject obj) {
CHECK_JNI_ENTRY(kFlag_Default, "EL", env, obj);
return CHECK_JNI_EXIT("L", baseEnv(env)->NewGlobalRef(env, obj));
}
static jobject NewLocalRef(JNIEnv* env, jobject ref) {
CHECK_JNI_ENTRY(kFlag_Default, "EL", env, ref);
return CHECK_JNI_EXIT("L", baseEnv(env)->NewLocalRef(env, ref));
}
static void DeleteGlobalRef(JNIEnv* env, jobject globalRef) {
CHECK_JNI_ENTRY(kFlag_Default | kFlag_ExcepOkay, "EL", env, globalRef);
if (globalRef != nullptr && GetIndirectRefKind(globalRef) != kGlobal) {
JniAbortF(__FUNCTION__, "DeleteGlobalRef on %s: %p",
ToStr<IndirectRefKind>(GetIndirectRefKind(globalRef)).c_str(), globalRef);
} else {
baseEnv(env)->DeleteGlobalRef(env, globalRef);
CHECK_JNI_EXIT_VOID();
}
}
static void DeleteWeakGlobalRef(JNIEnv* env, jweak weakGlobalRef) {
CHECK_JNI_ENTRY(kFlag_Default | kFlag_ExcepOkay, "EL", env, weakGlobalRef);
if (weakGlobalRef != nullptr && GetIndirectRefKind(weakGlobalRef) != kWeakGlobal) {
JniAbortF(__FUNCTION__, "DeleteWeakGlobalRef on %s: %p",
ToStr<IndirectRefKind>(GetIndirectRefKind(weakGlobalRef)).c_str(), weakGlobalRef);
} else {
baseEnv(env)->DeleteWeakGlobalRef(env, weakGlobalRef);
CHECK_JNI_EXIT_VOID();
}
}
static void DeleteLocalRef(JNIEnv* env, jobject localRef) {
CHECK_JNI_ENTRY(kFlag_Default | kFlag_ExcepOkay, "EL", env, localRef);
if (localRef != nullptr && GetIndirectRefKind(localRef) != kLocal && !IsSirtLocalRef(env, localRef)) {
JniAbortF(__FUNCTION__, "DeleteLocalRef on %s: %p",
ToStr<IndirectRefKind>(GetIndirectRefKind(localRef)).c_str(), localRef);
} else {
baseEnv(env)->DeleteLocalRef(env, localRef);
CHECK_JNI_EXIT_VOID();
}
}
static jint EnsureLocalCapacity(JNIEnv *env, jint capacity) {
CHECK_JNI_ENTRY(kFlag_Default, "EI", env, capacity);
return CHECK_JNI_EXIT("I", baseEnv(env)->EnsureLocalCapacity(env, capacity));
}
static jboolean IsSameObject(JNIEnv* env, jobject ref1, jobject ref2) {
CHECK_JNI_ENTRY(kFlag_Default, "ELL", env, ref1, ref2);
return CHECK_JNI_EXIT("b", baseEnv(env)->IsSameObject(env, ref1, ref2));
}
static jobject AllocObject(JNIEnv* env, jclass c) {
CHECK_JNI_ENTRY(kFlag_Default, "Ec", env, c);
return CHECK_JNI_EXIT("L", baseEnv(env)->AllocObject(env, c));
}
static jobject NewObject(JNIEnv* env, jclass c, jmethodID mid, ...) {
CHECK_JNI_ENTRY(kFlag_Default, "Ecm.", env, c, mid);
va_list args;
va_start(args, mid);
jobject result = baseEnv(env)->NewObjectV(env, c, mid, args);
va_end(args);
return CHECK_JNI_EXIT("L", result);
}
static jobject NewObjectV(JNIEnv* env, jclass c, jmethodID mid, va_list args) {
CHECK_JNI_ENTRY(kFlag_Default, "Ecm.", env, c, mid);
return CHECK_JNI_EXIT("L", baseEnv(env)->NewObjectV(env, c, mid, args));
}
static jobject NewObjectA(JNIEnv* env, jclass c, jmethodID mid, jvalue* args) {
CHECK_JNI_ENTRY(kFlag_Default, "Ecm.", env, c, mid);
return CHECK_JNI_EXIT("L", baseEnv(env)->NewObjectA(env, c, mid, args));
}
static jclass GetObjectClass(JNIEnv* env, jobject obj) {
CHECK_JNI_ENTRY(kFlag_Default, "EL", env, obj);
return CHECK_JNI_EXIT("c", baseEnv(env)->GetObjectClass(env, obj));
}
static jboolean IsInstanceOf(JNIEnv* env, jobject obj, jclass c) {
CHECK_JNI_ENTRY(kFlag_Default, "ELc", env, obj, c);
return CHECK_JNI_EXIT("b", baseEnv(env)->IsInstanceOf(env, obj, c));
}
static jmethodID GetMethodID(JNIEnv* env, jclass c, const char* name, const char* sig) {
CHECK_JNI_ENTRY(kFlag_Default, "Ecuu", env, c, name, sig);
return CHECK_JNI_EXIT("m", baseEnv(env)->GetMethodID(env, c, name, sig));
}
static jfieldID GetFieldID(JNIEnv* env, jclass c, const char* name, const char* sig) {
CHECK_JNI_ENTRY(kFlag_Default, "Ecuu", env, c, name, sig);
return CHECK_JNI_EXIT("f", baseEnv(env)->GetFieldID(env, c, name, sig));
}
static jmethodID GetStaticMethodID(JNIEnv* env, jclass c, const char* name, const char* sig) {
CHECK_JNI_ENTRY(kFlag_Default, "Ecuu", env, c, name, sig);
return CHECK_JNI_EXIT("m", baseEnv(env)->GetStaticMethodID(env, c, name, sig));
}
static jfieldID GetStaticFieldID(JNIEnv* env, jclass c, const char* name, const char* sig) {
CHECK_JNI_ENTRY(kFlag_Default, "Ecuu", env, c, name, sig);
return CHECK_JNI_EXIT("f", baseEnv(env)->GetStaticFieldID(env, c, name, sig));
}
#define FIELD_ACCESSORS(_ctype, _jname, _jvalue_type, _type) \
static _ctype GetStatic##_jname##Field(JNIEnv* env, jclass c, jfieldID fid) { \
CHECK_JNI_ENTRY(kFlag_Default, "Ecf", env, c, fid); \
sc.CheckStaticFieldID(c, fid); \
return CHECK_JNI_EXIT(_type, baseEnv(env)->GetStatic##_jname##Field(env, c, fid)); \
} \
static _ctype Get##_jname##Field(JNIEnv* env, jobject obj, jfieldID fid) { \
CHECK_JNI_ENTRY(kFlag_Default, "ELf", env, obj, fid); \
sc.CheckInstanceFieldID(obj, fid); \
return CHECK_JNI_EXIT(_type, baseEnv(env)->Get##_jname##Field(env, obj, fid)); \
} \
static void SetStatic##_jname##Field(JNIEnv* env, jclass c, jfieldID fid, _ctype value) { \
CHECK_JNI_ENTRY(kFlag_Default, "Ecf" _type, env, c, fid, value); \
sc.CheckStaticFieldID(c, fid); \
/* "value" arg only used when type == ref */ \
jvalue java_type_value; \
java_type_value._jvalue_type = value; \
sc.CheckFieldType(java_type_value, fid, _type[0], true); \
baseEnv(env)->SetStatic##_jname##Field(env, c, fid, value); \
CHECK_JNI_EXIT_VOID(); \
} \
static void Set##_jname##Field(JNIEnv* env, jobject obj, jfieldID fid, _ctype value) { \
CHECK_JNI_ENTRY(kFlag_Default, "ELf" _type, env, obj, fid, value); \
sc.CheckInstanceFieldID(obj, fid); \
/* "value" arg only used when type == ref */ \
jvalue java_type_value; \
java_type_value._jvalue_type = value; \
sc.CheckFieldType(java_type_value, fid, _type[0], false); \
baseEnv(env)->Set##_jname##Field(env, obj, fid, value); \
CHECK_JNI_EXIT_VOID(); \
}
FIELD_ACCESSORS(jobject, Object, l, "L");
FIELD_ACCESSORS(jboolean, Boolean, z, "Z");
FIELD_ACCESSORS(jbyte, Byte, b, "B");
FIELD_ACCESSORS(jchar, Char, c, "C");
FIELD_ACCESSORS(jshort, Short, s, "S");
FIELD_ACCESSORS(jint, Int, i, "I");
FIELD_ACCESSORS(jlong, Long, j, "J");
FIELD_ACCESSORS(jfloat, Float, f, "F");
FIELD_ACCESSORS(jdouble, Double, d, "D");
#define CALL(_ctype, _jname, _retdecl, _retasgn, _retok, _retsig) \
/* Virtual... */ \
static _ctype Call##_jname##Method(JNIEnv* env, jobject obj, \
jmethodID mid, ...) \
{ \
CHECK_JNI_ENTRY(kFlag_Default, "ELm.", env, obj, mid); /* TODO: args! */ \
sc.CheckSig(mid, _retsig, false); \
sc.CheckVirtualMethod(obj, mid); \
_retdecl; \
va_list args; \
va_start(args, mid); \
_retasgn(baseEnv(env)->Call##_jname##MethodV(env, obj, mid, args)); \
va_end(args); \
_retok; \
} \
static _ctype Call##_jname##MethodV(JNIEnv* env, jobject obj, \
jmethodID mid, va_list args) \
{ \
CHECK_JNI_ENTRY(kFlag_Default, "ELm.", env, obj, mid); /* TODO: args! */ \
sc.CheckSig(mid, _retsig, false); \
sc.CheckVirtualMethod(obj, mid); \
_retdecl; \
_retasgn(baseEnv(env)->Call##_jname##MethodV(env, obj, mid, args)); \
_retok; \
} \
static _ctype Call##_jname##MethodA(JNIEnv* env, jobject obj, \
jmethodID mid, jvalue* args) \
{ \
CHECK_JNI_ENTRY(kFlag_Default, "ELm.", env, obj, mid); /* TODO: args! */ \
sc.CheckSig(mid, _retsig, false); \
sc.CheckVirtualMethod(obj, mid); \
_retdecl; \
_retasgn(baseEnv(env)->Call##_jname##MethodA(env, obj, mid, args)); \
_retok; \
} \
/* Non-virtual... */ \
static _ctype CallNonvirtual##_jname##Method(JNIEnv* env, \
jobject obj, jclass c, jmethodID mid, ...) \
{ \
CHECK_JNI_ENTRY(kFlag_Default, "ELcm.", env, obj, c, mid); /* TODO: args! */ \
sc.CheckSig(mid, _retsig, false); \
sc.CheckVirtualMethod(obj, mid); \
_retdecl; \
va_list args; \
va_start(args, mid); \
_retasgn(baseEnv(env)->CallNonvirtual##_jname##MethodV(env, obj, c, mid, args)); \
va_end(args); \
_retok; \
} \
static _ctype CallNonvirtual##_jname##MethodV(JNIEnv* env, \
jobject obj, jclass c, jmethodID mid, va_list args) \
{ \
CHECK_JNI_ENTRY(kFlag_Default, "ELcm.", env, obj, c, mid); /* TODO: args! */ \
sc.CheckSig(mid, _retsig, false); \
sc.CheckVirtualMethod(obj, mid); \
_retdecl; \
_retasgn(baseEnv(env)->CallNonvirtual##_jname##MethodV(env, obj, c, mid, args)); \
_retok; \
} \
static _ctype CallNonvirtual##_jname##MethodA(JNIEnv* env, \
jobject obj, jclass c, jmethodID mid, jvalue* args) \
{ \
CHECK_JNI_ENTRY(kFlag_Default, "ELcm.", env, obj, c, mid); /* TODO: args! */ \
sc.CheckSig(mid, _retsig, false); \
sc.CheckVirtualMethod(obj, mid); \
_retdecl; \
_retasgn(baseEnv(env)->CallNonvirtual##_jname##MethodA(env, obj, c, mid, args)); \
_retok; \
} \
/* Static... */ \
static _ctype CallStatic##_jname##Method(JNIEnv* env, jclass c, jmethodID mid, ...) \
{ \
CHECK_JNI_ENTRY(kFlag_Default, "Ecm.", env, c, mid); /* TODO: args! */ \
sc.CheckSig(mid, _retsig, true); \
sc.CheckStaticMethod(c, mid); \
_retdecl; \
va_list args; \
va_start(args, mid); \
_retasgn(baseEnv(env)->CallStatic##_jname##MethodV(env, c, mid, args)); \
va_end(args); \
_retok; \
} \
static _ctype CallStatic##_jname##MethodV(JNIEnv* env, jclass c, jmethodID mid, va_list args) \
{ \
CHECK_JNI_ENTRY(kFlag_Default, "Ecm.", env, c, mid); /* TODO: args! */ \
sc.CheckSig(mid, _retsig, true); \
sc.CheckStaticMethod(c, mid); \
_retdecl; \
_retasgn(baseEnv(env)->CallStatic##_jname##MethodV(env, c, mid, args)); \
_retok; \
} \
static _ctype CallStatic##_jname##MethodA(JNIEnv* env, jclass c, jmethodID mid, jvalue* args) \
{ \
CHECK_JNI_ENTRY(kFlag_Default, "Ecm.", env, c, mid); /* TODO: args! */ \
sc.CheckSig(mid, _retsig, true); \
sc.CheckStaticMethod(c, mid); \
_retdecl; \
_retasgn(baseEnv(env)->CallStatic##_jname##MethodA(env, c, mid, args)); \
_retok; \
}
#define NON_VOID_RETURN(_retsig, _ctype) return CHECK_JNI_EXIT(_retsig, (_ctype) result)
#define VOID_RETURN CHECK_JNI_EXIT_VOID()
CALL(jobject, Object, mirror::Object* result, result = reinterpret_cast<mirror::Object*>, NON_VOID_RETURN("L", jobject), "L");
CALL(jboolean, Boolean, jboolean result, result =, NON_VOID_RETURN("Z", jboolean), "Z");
CALL(jbyte, Byte, jbyte result, result =, NON_VOID_RETURN("B", jbyte), "B");
CALL(jchar, Char, jchar result, result =, NON_VOID_RETURN("C", jchar), "C");
CALL(jshort, Short, jshort result, result =, NON_VOID_RETURN("S", jshort), "S");
CALL(jint, Int, jint result, result =, NON_VOID_RETURN("I", jint), "I");
CALL(jlong, Long, jlong result, result =, NON_VOID_RETURN("J", jlong), "J");
CALL(jfloat, Float, jfloat result, result =, NON_VOID_RETURN("F", jfloat), "F");
CALL(jdouble, Double, jdouble result, result =, NON_VOID_RETURN("D", jdouble), "D");
CALL(void, Void, , , VOID_RETURN, "V");
static jstring NewString(JNIEnv* env, const jchar* unicodeChars, jsize len) {
CHECK_JNI_ENTRY(kFlag_Default, "Epz", env, unicodeChars, len);
return CHECK_JNI_EXIT("s", baseEnv(env)->NewString(env, unicodeChars, len));
}
static jsize GetStringLength(JNIEnv* env, jstring string) {
CHECK_JNI_ENTRY(kFlag_CritOkay, "Es", env, string);
return CHECK_JNI_EXIT("I", baseEnv(env)->GetStringLength(env, string));
}
static const jchar* GetStringChars(JNIEnv* env, jstring java_string, jboolean* isCopy) {
CHECK_JNI_ENTRY(kFlag_CritOkay, "Esp", env, java_string, isCopy);
const jchar* result = baseEnv(env)->GetStringChars(env, java_string, isCopy);
if (sc.ForceCopy() && result != nullptr) {
mirror::String* s = sc.soa().Decode<mirror::String*>(java_string);
int byteCount = s->GetLength() * 2;
result = (const jchar*) GuardedCopy::Create(result, byteCount, false);
if (isCopy != nullptr) {
*isCopy = JNI_TRUE;
}
}
return CHECK_JNI_EXIT("p", result);
}
static void ReleaseStringChars(JNIEnv* env, jstring string, const jchar* chars) {
CHECK_JNI_ENTRY(kFlag_Default | kFlag_ExcepOkay, "Esp", env, string, chars);
sc.CheckNonNull(chars);
if (sc.ForceCopy()) {
GuardedCopy::Check(__FUNCTION__, chars, false);
chars = reinterpret_cast<const jchar*>(GuardedCopy::Destroy(const_cast<jchar*>(chars)));
}
baseEnv(env)->ReleaseStringChars(env, string, chars);
CHECK_JNI_EXIT_VOID();
}
static jstring NewStringUTF(JNIEnv* env, const char* bytes) {
CHECK_JNI_ENTRY(kFlag_NullableUtf, "Eu", env, bytes); // TODO: show pointer and truncate string.
return CHECK_JNI_EXIT("s", baseEnv(env)->NewStringUTF(env, bytes));
}
static jsize GetStringUTFLength(JNIEnv* env, jstring string) {
CHECK_JNI_ENTRY(kFlag_CritOkay, "Es", env, string);
return CHECK_JNI_EXIT("I", baseEnv(env)->GetStringUTFLength(env, string));
}
static const char* GetStringUTFChars(JNIEnv* env, jstring string, jboolean* isCopy) {
CHECK_JNI_ENTRY(kFlag_CritOkay, "Esp", env, string, isCopy);
const char* result = baseEnv(env)->GetStringUTFChars(env, string, isCopy);
if (sc.ForceCopy() && result != nullptr) {
result = (const char*) GuardedCopy::Create(result, strlen(result) + 1, false);
if (isCopy != nullptr) {
*isCopy = JNI_TRUE;
}
}
return CHECK_JNI_EXIT("u", result); // TODO: show pointer and truncate string.
}
static void ReleaseStringUTFChars(JNIEnv* env, jstring string, const char* utf) {
CHECK_JNI_ENTRY(kFlag_ExcepOkay | kFlag_Release, "Esu", env, string, utf); // TODO: show pointer and truncate string.
if (sc.ForceCopy()) {
GuardedCopy::Check(__FUNCTION__, utf, false);
utf = reinterpret_cast<const char*>(GuardedCopy::Destroy(const_cast<char*>(utf)));
}
baseEnv(env)->ReleaseStringUTFChars(env, string, utf);
CHECK_JNI_EXIT_VOID();
}
static jsize GetArrayLength(JNIEnv* env, jarray array) {
CHECK_JNI_ENTRY(kFlag_CritOkay, "Ea", env, array);
return CHECK_JNI_EXIT("I", baseEnv(env)->GetArrayLength(env, array));
}
static jobjectArray NewObjectArray(JNIEnv* env, jsize length, jclass elementClass, jobject initialElement) {
CHECK_JNI_ENTRY(kFlag_Default, "EzcL", env, length, elementClass, initialElement);
return CHECK_JNI_EXIT("a", baseEnv(env)->NewObjectArray(env, length, elementClass, initialElement));
}
static jobject GetObjectArrayElement(JNIEnv* env, jobjectArray array, jsize index) {
CHECK_JNI_ENTRY(kFlag_Default, "EaI", env, array, index);
return CHECK_JNI_EXIT("L", baseEnv(env)->GetObjectArrayElement(env, array, index));
}
static void SetObjectArrayElement(JNIEnv* env, jobjectArray array, jsize index, jobject value) {
CHECK_JNI_ENTRY(kFlag_Default, "EaIL", env, array, index, value);
baseEnv(env)->SetObjectArrayElement(env, array, index, value);
CHECK_JNI_EXIT_VOID();
}
#define NEW_PRIMITIVE_ARRAY(_artype, _jname) \
static _artype New##_jname##Array(JNIEnv* env, jsize length) { \
CHECK_JNI_ENTRY(kFlag_Default, "Ez", env, length); \
return CHECK_JNI_EXIT("a", baseEnv(env)->New##_jname##Array(env, length)); \
}
NEW_PRIMITIVE_ARRAY(jbooleanArray, Boolean);
NEW_PRIMITIVE_ARRAY(jbyteArray, Byte);
NEW_PRIMITIVE_ARRAY(jcharArray, Char);
NEW_PRIMITIVE_ARRAY(jshortArray, Short);
NEW_PRIMITIVE_ARRAY(jintArray, Int);
NEW_PRIMITIVE_ARRAY(jlongArray, Long);
NEW_PRIMITIVE_ARRAY(jfloatArray, Float);
NEW_PRIMITIVE_ARRAY(jdoubleArray, Double);
struct ForceCopyGetChecker {
public:
ForceCopyGetChecker(ScopedCheck& sc, jboolean* isCopy) {
force_copy = sc.ForceCopy();
no_copy = 0;
if (force_copy && isCopy != nullptr) {
// Capture this before the base call tramples on it.
no_copy = *reinterpret_cast<uint32_t*>(isCopy);
}
}
template<typename ResultT>
ResultT Check(JNIEnv* env, jarray array, jboolean* isCopy, ResultT result) {
if (force_copy && result != nullptr) {
result = reinterpret_cast<ResultT>(CreateGuardedPACopy(env, array, isCopy));
}
return result;
}
uint32_t no_copy;
bool force_copy;
};
#define GET_PRIMITIVE_ARRAY_ELEMENTS(_ctype, _jname) \
static _ctype* Get##_jname##ArrayElements(JNIEnv* env, _ctype##Array array, jboolean* isCopy) { \
CHECK_JNI_ENTRY(kFlag_Default, "Eap", env, array, isCopy); \
_ctype* result = ForceCopyGetChecker(sc, isCopy).Check(env, array, isCopy, baseEnv(env)->Get##_jname##ArrayElements(env, array, isCopy)); \
return CHECK_JNI_EXIT("p", result); \
}
#define RELEASE_PRIMITIVE_ARRAY_ELEMENTS(_ctype, _jname) \
static void Release##_jname##ArrayElements(JNIEnv* env, _ctype##Array array, _ctype* elems, jint mode) { \
CHECK_JNI_ENTRY(kFlag_Default | kFlag_ExcepOkay, "Eapr", env, array, elems, mode); \
sc.CheckNonNull(elems); \
if (sc.ForceCopy()) { \
ReleaseGuardedPACopy(env, array, elems, mode); \
} \
baseEnv(env)->Release##_jname##ArrayElements(env, array, elems, mode); \
CHECK_JNI_EXIT_VOID(); \
}
#define GET_PRIMITIVE_ARRAY_REGION(_ctype, _jname) \
static void Get##_jname##ArrayRegion(JNIEnv* env, _ctype##Array array, jsize start, jsize len, _ctype* buf) { \
CHECK_JNI_ENTRY(kFlag_Default, "EaIIp", env, array, start, len, buf); \
baseEnv(env)->Get##_jname##ArrayRegion(env, array, start, len, buf); \
CHECK_JNI_EXIT_VOID(); \
}
#define SET_PRIMITIVE_ARRAY_REGION(_ctype, _jname) \
static void Set##_jname##ArrayRegion(JNIEnv* env, _ctype##Array array, jsize start, jsize len, const _ctype* buf) { \
CHECK_JNI_ENTRY(kFlag_Default, "EaIIp", env, array, start, len, buf); \
baseEnv(env)->Set##_jname##ArrayRegion(env, array, start, len, buf); \
CHECK_JNI_EXIT_VOID(); \
}
#define PRIMITIVE_ARRAY_FUNCTIONS(_ctype, _jname, _typechar) \
GET_PRIMITIVE_ARRAY_ELEMENTS(_ctype, _jname); \
RELEASE_PRIMITIVE_ARRAY_ELEMENTS(_ctype, _jname); \
GET_PRIMITIVE_ARRAY_REGION(_ctype, _jname); \
SET_PRIMITIVE_ARRAY_REGION(_ctype, _jname);
// TODO: verify primitive array type matches call type.
PRIMITIVE_ARRAY_FUNCTIONS(jboolean, Boolean, 'Z');
PRIMITIVE_ARRAY_FUNCTIONS(jbyte, Byte, 'B');
PRIMITIVE_ARRAY_FUNCTIONS(jchar, Char, 'C');
PRIMITIVE_ARRAY_FUNCTIONS(jshort, Short, 'S');
PRIMITIVE_ARRAY_FUNCTIONS(jint, Int, 'I');
PRIMITIVE_ARRAY_FUNCTIONS(jlong, Long, 'J');
PRIMITIVE_ARRAY_FUNCTIONS(jfloat, Float, 'F');
PRIMITIVE_ARRAY_FUNCTIONS(jdouble, Double, 'D');
static jint RegisterNatives(JNIEnv* env, jclass c, const JNINativeMethod* methods, jint nMethods) {
CHECK_JNI_ENTRY(kFlag_Default, "EcpI", env, c, methods, nMethods);
return CHECK_JNI_EXIT("I", baseEnv(env)->RegisterNatives(env, c, methods, nMethods));
}
static jint UnregisterNatives(JNIEnv* env, jclass c) {
CHECK_JNI_ENTRY(kFlag_Default, "Ec", env, c);
return CHECK_JNI_EXIT("I", baseEnv(env)->UnregisterNatives(env, c));
}
static jint MonitorEnter(JNIEnv* env, jobject obj) {
CHECK_JNI_ENTRY(kFlag_Default, "EL", env, obj);
if (!sc.CheckInstance(ScopedCheck::kObject, obj)) {
return JNI_ERR; // Only for jni_internal_test. Real code will have aborted already.
}
return CHECK_JNI_EXIT("I", baseEnv(env)->MonitorEnter(env, obj));
}
static jint MonitorExit(JNIEnv* env, jobject obj) {
CHECK_JNI_ENTRY(kFlag_Default | kFlag_ExcepOkay, "EL", env, obj);
if (!sc.CheckInstance(ScopedCheck::kObject, obj)) {
return JNI_ERR; // Only for jni_internal_test. Real code will have aborted already.
}
return CHECK_JNI_EXIT("I", baseEnv(env)->MonitorExit(env, obj));
}
static jint GetJavaVM(JNIEnv *env, JavaVM **vm) {
CHECK_JNI_ENTRY(kFlag_Default, "Ep", env, vm);
return CHECK_JNI_EXIT("I", baseEnv(env)->GetJavaVM(env, vm));
}
static void GetStringRegion(JNIEnv* env, jstring str, jsize start, jsize len, jchar* buf) {
CHECK_JNI_ENTRY(kFlag_CritOkay, "EsIIp", env, str, start, len, buf);
baseEnv(env)->GetStringRegion(env, str, start, len, buf);
CHECK_JNI_EXIT_VOID();
}
static void GetStringUTFRegion(JNIEnv* env, jstring str, jsize start, jsize len, char* buf) {
CHECK_JNI_ENTRY(kFlag_CritOkay, "EsIIp", env, str, start, len, buf);
baseEnv(env)->GetStringUTFRegion(env, str, start, len, buf);
CHECK_JNI_EXIT_VOID();
}
static void* GetPrimitiveArrayCritical(JNIEnv* env, jarray array, jboolean* isCopy) {
CHECK_JNI_ENTRY(kFlag_CritGet, "Eap", env, array, isCopy);
void* result = baseEnv(env)->GetPrimitiveArrayCritical(env, array, isCopy);
if (sc.ForceCopy() && result != nullptr) {
result = CreateGuardedPACopy(env, array, isCopy);
}
return CHECK_JNI_EXIT("p", result);
}
static void ReleasePrimitiveArrayCritical(JNIEnv* env, jarray array, void* carray, jint mode) {
CHECK_JNI_ENTRY(kFlag_CritRelease | kFlag_ExcepOkay, "Eapr", env, array, carray, mode);
sc.CheckNonNull(carray);
if (sc.ForceCopy()) {
ReleaseGuardedPACopy(env, array, carray, mode);
}
baseEnv(env)->ReleasePrimitiveArrayCritical(env, array, carray, mode);
CHECK_JNI_EXIT_VOID();
}
static const jchar* GetStringCritical(JNIEnv* env, jstring java_string, jboolean* isCopy) {
CHECK_JNI_ENTRY(kFlag_CritGet, "Esp", env, java_string, isCopy);
const jchar* result = baseEnv(env)->GetStringCritical(env, java_string, isCopy);
if (sc.ForceCopy() && result != nullptr) {
mirror::String* s = sc.soa().Decode<mirror::String*>(java_string);
int byteCount = s->GetLength() * 2;
result = (const jchar*) GuardedCopy::Create(result, byteCount, false);
if (isCopy != nullptr) {
*isCopy = JNI_TRUE;
}
}
return CHECK_JNI_EXIT("p", result);
}
static void ReleaseStringCritical(JNIEnv* env, jstring string, const jchar* carray) {
CHECK_JNI_ENTRY(kFlag_CritRelease | kFlag_ExcepOkay, "Esp", env, string, carray);
sc.CheckNonNull(carray);
if (sc.ForceCopy()) {
GuardedCopy::Check(__FUNCTION__, carray, false);
carray = reinterpret_cast<const jchar*>(GuardedCopy::Destroy(const_cast<jchar*>(carray)));
}
baseEnv(env)->ReleaseStringCritical(env, string, carray);
CHECK_JNI_EXIT_VOID();
}
static jweak NewWeakGlobalRef(JNIEnv* env, jobject obj) {
CHECK_JNI_ENTRY(kFlag_Default, "EL", env, obj);
return CHECK_JNI_EXIT("L", baseEnv(env)->NewWeakGlobalRef(env, obj));
}
static jboolean ExceptionCheck(JNIEnv* env) {
CHECK_JNI_ENTRY(kFlag_CritOkay | kFlag_ExcepOkay, "E", env);
return CHECK_JNI_EXIT("b", baseEnv(env)->ExceptionCheck(env));
}
static jobjectRefType GetObjectRefType(JNIEnv* env, jobject obj) {
// Note: we use "Ep" rather than "EL" because this is the one JNI function
// that it's okay to pass an invalid reference to.
CHECK_JNI_ENTRY(kFlag_Default, "Ep", env, obj);
// TODO: proper decoding of jobjectRefType!
return CHECK_JNI_EXIT("I", baseEnv(env)->GetObjectRefType(env, obj));
}
static jobject NewDirectByteBuffer(JNIEnv* env, void* address, jlong capacity) {
CHECK_JNI_ENTRY(kFlag_Default, "EpJ", env, address, capacity);
if (address == nullptr) {
JniAbortF(__FUNCTION__, "non-nullable address is NULL");
}
if (capacity < 0) {
JniAbortF(__FUNCTION__, "capacity must be non-negative: %" PRId64, capacity);
}
return CHECK_JNI_EXIT("L", baseEnv(env)->NewDirectByteBuffer(env, address, capacity));
}
static void* GetDirectBufferAddress(JNIEnv* env, jobject buf) {
CHECK_JNI_ENTRY(kFlag_Default, "EL", env, buf);
// TODO: check that 'buf' is a java.nio.Buffer.
return CHECK_JNI_EXIT("p", baseEnv(env)->GetDirectBufferAddress(env, buf));
}
static jlong GetDirectBufferCapacity(JNIEnv* env, jobject buf) {
CHECK_JNI_ENTRY(kFlag_Default, "EL", env, buf);
// TODO: check that 'buf' is a java.nio.Buffer.
return CHECK_JNI_EXIT("J", baseEnv(env)->GetDirectBufferCapacity(env, buf));
}
private:
static inline const JNINativeInterface* baseEnv(JNIEnv* env) {
return reinterpret_cast<JNIEnvExt*>(env)->unchecked_functions;
}
};
const JNINativeInterface gCheckNativeInterface = {
nullptr, // reserved0.
nullptr, // reserved1.
nullptr, // reserved2.
nullptr, // reserved3.
CheckJNI::GetVersion,
CheckJNI::DefineClass,
CheckJNI::FindClass,
CheckJNI::FromReflectedMethod,
CheckJNI::FromReflectedField,
CheckJNI::ToReflectedMethod,
CheckJNI::GetSuperclass,
CheckJNI::IsAssignableFrom,
CheckJNI::ToReflectedField,
CheckJNI::Throw,
CheckJNI::ThrowNew,
CheckJNI::ExceptionOccurred,
CheckJNI::ExceptionDescribe,
CheckJNI::ExceptionClear,
CheckJNI::FatalError,
CheckJNI::PushLocalFrame,
CheckJNI::PopLocalFrame,
CheckJNI::NewGlobalRef,
CheckJNI::DeleteGlobalRef,
CheckJNI::DeleteLocalRef,
CheckJNI::IsSameObject,
CheckJNI::NewLocalRef,
CheckJNI::EnsureLocalCapacity,
CheckJNI::AllocObject,
CheckJNI::NewObject,
CheckJNI::NewObjectV,
CheckJNI::NewObjectA,
CheckJNI::GetObjectClass,
CheckJNI::IsInstanceOf,
CheckJNI::GetMethodID,
CheckJNI::CallObjectMethod,
CheckJNI::CallObjectMethodV,
CheckJNI::CallObjectMethodA,
CheckJNI::CallBooleanMethod,
CheckJNI::CallBooleanMethodV,
CheckJNI::CallBooleanMethodA,
CheckJNI::CallByteMethod,
CheckJNI::CallByteMethodV,
CheckJNI::CallByteMethodA,
CheckJNI::CallCharMethod,
CheckJNI::CallCharMethodV,
CheckJNI::CallCharMethodA,
CheckJNI::CallShortMethod,
CheckJNI::CallShortMethodV,
CheckJNI::CallShortMethodA,
CheckJNI::CallIntMethod,
CheckJNI::CallIntMethodV,
CheckJNI::CallIntMethodA,
CheckJNI::CallLongMethod,
CheckJNI::CallLongMethodV,
CheckJNI::CallLongMethodA,
CheckJNI::CallFloatMethod,
CheckJNI::CallFloatMethodV,
CheckJNI::CallFloatMethodA,
CheckJNI::CallDoubleMethod,
CheckJNI::CallDoubleMethodV,
CheckJNI::CallDoubleMethodA,
CheckJNI::CallVoidMethod,
CheckJNI::CallVoidMethodV,
CheckJNI::CallVoidMethodA,
CheckJNI::CallNonvirtualObjectMethod,
CheckJNI::CallNonvirtualObjectMethodV,
CheckJNI::CallNonvirtualObjectMethodA,
CheckJNI::CallNonvirtualBooleanMethod,
CheckJNI::CallNonvirtualBooleanMethodV,
CheckJNI::CallNonvirtualBooleanMethodA,
CheckJNI::CallNonvirtualByteMethod,
CheckJNI::CallNonvirtualByteMethodV,
CheckJNI::CallNonvirtualByteMethodA,
CheckJNI::CallNonvirtualCharMethod,
CheckJNI::CallNonvirtualCharMethodV,
CheckJNI::CallNonvirtualCharMethodA,
CheckJNI::CallNonvirtualShortMethod,
CheckJNI::CallNonvirtualShortMethodV,
CheckJNI::CallNonvirtualShortMethodA,
CheckJNI::CallNonvirtualIntMethod,
CheckJNI::CallNonvirtualIntMethodV,
CheckJNI::CallNonvirtualIntMethodA,
CheckJNI::CallNonvirtualLongMethod,
CheckJNI::CallNonvirtualLongMethodV,
CheckJNI::CallNonvirtualLongMethodA,
CheckJNI::CallNonvirtualFloatMethod,
CheckJNI::CallNonvirtualFloatMethodV,
CheckJNI::CallNonvirtualFloatMethodA,
CheckJNI::CallNonvirtualDoubleMethod,
CheckJNI::CallNonvirtualDoubleMethodV,
CheckJNI::CallNonvirtualDoubleMethodA,
CheckJNI::CallNonvirtualVoidMethod,
CheckJNI::CallNonvirtualVoidMethodV,
CheckJNI::CallNonvirtualVoidMethodA,
CheckJNI::GetFieldID,
CheckJNI::GetObjectField,
CheckJNI::GetBooleanField,
CheckJNI::GetByteField,
CheckJNI::GetCharField,
CheckJNI::GetShortField,
CheckJNI::GetIntField,
CheckJNI::GetLongField,
CheckJNI::GetFloatField,
CheckJNI::GetDoubleField,
CheckJNI::SetObjectField,
CheckJNI::SetBooleanField,
CheckJNI::SetByteField,
CheckJNI::SetCharField,
CheckJNI::SetShortField,
CheckJNI::SetIntField,
CheckJNI::SetLongField,
CheckJNI::SetFloatField,
CheckJNI::SetDoubleField,
CheckJNI::GetStaticMethodID,
CheckJNI::CallStaticObjectMethod,
CheckJNI::CallStaticObjectMethodV,
CheckJNI::CallStaticObjectMethodA,
CheckJNI::CallStaticBooleanMethod,
CheckJNI::CallStaticBooleanMethodV,
CheckJNI::CallStaticBooleanMethodA,
CheckJNI::CallStaticByteMethod,
CheckJNI::CallStaticByteMethodV,
CheckJNI::CallStaticByteMethodA,
CheckJNI::CallStaticCharMethod,
CheckJNI::CallStaticCharMethodV,
CheckJNI::CallStaticCharMethodA,
CheckJNI::CallStaticShortMethod,
CheckJNI::CallStaticShortMethodV,
CheckJNI::CallStaticShortMethodA,
CheckJNI::CallStaticIntMethod,
CheckJNI::CallStaticIntMethodV,
CheckJNI::CallStaticIntMethodA,
CheckJNI::CallStaticLongMethod,
CheckJNI::CallStaticLongMethodV,
CheckJNI::CallStaticLongMethodA,
CheckJNI::CallStaticFloatMethod,
CheckJNI::CallStaticFloatMethodV,
CheckJNI::CallStaticFloatMethodA,
CheckJNI::CallStaticDoubleMethod,
CheckJNI::CallStaticDoubleMethodV,
CheckJNI::CallStaticDoubleMethodA,
CheckJNI::CallStaticVoidMethod,
CheckJNI::CallStaticVoidMethodV,
CheckJNI::CallStaticVoidMethodA,
CheckJNI::GetStaticFieldID,
CheckJNI::GetStaticObjectField,
CheckJNI::GetStaticBooleanField,
CheckJNI::GetStaticByteField,
CheckJNI::GetStaticCharField,
CheckJNI::GetStaticShortField,
CheckJNI::GetStaticIntField,
CheckJNI::GetStaticLongField,
CheckJNI::GetStaticFloatField,
CheckJNI::GetStaticDoubleField,
CheckJNI::SetStaticObjectField,
CheckJNI::SetStaticBooleanField,
CheckJNI::SetStaticByteField,
CheckJNI::SetStaticCharField,
CheckJNI::SetStaticShortField,
CheckJNI::SetStaticIntField,
CheckJNI::SetStaticLongField,
CheckJNI::SetStaticFloatField,
CheckJNI::SetStaticDoubleField,
CheckJNI::NewString,
CheckJNI::GetStringLength,
CheckJNI::GetStringChars,
CheckJNI::ReleaseStringChars,
CheckJNI::NewStringUTF,
CheckJNI::GetStringUTFLength,
CheckJNI::GetStringUTFChars,
CheckJNI::ReleaseStringUTFChars,
CheckJNI::GetArrayLength,
CheckJNI::NewObjectArray,
CheckJNI::GetObjectArrayElement,
CheckJNI::SetObjectArrayElement,
CheckJNI::NewBooleanArray,
CheckJNI::NewByteArray,
CheckJNI::NewCharArray,
CheckJNI::NewShortArray,
CheckJNI::NewIntArray,
CheckJNI::NewLongArray,
CheckJNI::NewFloatArray,
CheckJNI::NewDoubleArray,
CheckJNI::GetBooleanArrayElements,
CheckJNI::GetByteArrayElements,
CheckJNI::GetCharArrayElements,
CheckJNI::GetShortArrayElements,
CheckJNI::GetIntArrayElements,
CheckJNI::GetLongArrayElements,
CheckJNI::GetFloatArrayElements,
CheckJNI::GetDoubleArrayElements,
CheckJNI::ReleaseBooleanArrayElements,
CheckJNI::ReleaseByteArrayElements,
CheckJNI::ReleaseCharArrayElements,
CheckJNI::ReleaseShortArrayElements,
CheckJNI::ReleaseIntArrayElements,
CheckJNI::ReleaseLongArrayElements,
CheckJNI::ReleaseFloatArrayElements,
CheckJNI::ReleaseDoubleArrayElements,
CheckJNI::GetBooleanArrayRegion,
CheckJNI::GetByteArrayRegion,
CheckJNI::GetCharArrayRegion,
CheckJNI::GetShortArrayRegion,
CheckJNI::GetIntArrayRegion,
CheckJNI::GetLongArrayRegion,
CheckJNI::GetFloatArrayRegion,
CheckJNI::GetDoubleArrayRegion,
CheckJNI::SetBooleanArrayRegion,
CheckJNI::SetByteArrayRegion,
CheckJNI::SetCharArrayRegion,
CheckJNI::SetShortArrayRegion,
CheckJNI::SetIntArrayRegion,
CheckJNI::SetLongArrayRegion,
CheckJNI::SetFloatArrayRegion,
CheckJNI::SetDoubleArrayRegion,
CheckJNI::RegisterNatives,
CheckJNI::UnregisterNatives,
CheckJNI::MonitorEnter,
CheckJNI::MonitorExit,
CheckJNI::GetJavaVM,
CheckJNI::GetStringRegion,
CheckJNI::GetStringUTFRegion,
CheckJNI::GetPrimitiveArrayCritical,
CheckJNI::ReleasePrimitiveArrayCritical,
CheckJNI::GetStringCritical,
CheckJNI::ReleaseStringCritical,
CheckJNI::NewWeakGlobalRef,
CheckJNI::DeleteWeakGlobalRef,
CheckJNI::ExceptionCheck,
CheckJNI::NewDirectByteBuffer,
CheckJNI::GetDirectBufferAddress,
CheckJNI::GetDirectBufferCapacity,
CheckJNI::GetObjectRefType,
};
const JNINativeInterface* GetCheckJniNativeInterface() {
return &gCheckNativeInterface;
}
class CheckJII {
public:
static jint DestroyJavaVM(JavaVM* vm) {
ScopedCheck sc(vm, false, __FUNCTION__);
sc.Check(true, "v", vm);
return CHECK_JNI_EXIT("I", BaseVm(vm)->DestroyJavaVM(vm));
}
static jint AttachCurrentThread(JavaVM* vm, JNIEnv** p_env, void* thr_args) {
ScopedCheck sc(vm, false, __FUNCTION__);
sc.Check(true, "vpp", vm, p_env, thr_args);
return CHECK_JNI_EXIT("I", BaseVm(vm)->AttachCurrentThread(vm, p_env, thr_args));
}
static jint AttachCurrentThreadAsDaemon(JavaVM* vm, JNIEnv** p_env, void* thr_args) {
ScopedCheck sc(vm, false, __FUNCTION__);
sc.Check(true, "vpp", vm, p_env, thr_args);
return CHECK_JNI_EXIT("I", BaseVm(vm)->AttachCurrentThreadAsDaemon(vm, p_env, thr_args));
}
static jint DetachCurrentThread(JavaVM* vm) {
ScopedCheck sc(vm, true, __FUNCTION__);
sc.Check(true, "v", vm);
return CHECK_JNI_EXIT("I", BaseVm(vm)->DetachCurrentThread(vm));
}
static jint GetEnv(JavaVM* vm, void** env, jint version) {
ScopedCheck sc(vm, true, __FUNCTION__);
sc.Check(true, "vpI", vm);
return CHECK_JNI_EXIT("I", BaseVm(vm)->GetEnv(vm, env, version));
}
private:
static inline const JNIInvokeInterface* BaseVm(JavaVM* vm) {
return reinterpret_cast<JavaVMExt*>(vm)->unchecked_functions;
}
};
const JNIInvokeInterface gCheckInvokeInterface = {
nullptr, // reserved0
nullptr, // reserved1
nullptr, // reserved2
CheckJII::DestroyJavaVM,
CheckJII::AttachCurrentThread,
CheckJII::DetachCurrentThread,
CheckJII::GetEnv,
CheckJII::AttachCurrentThreadAsDaemon
};
const JNIInvokeInterface* GetCheckJniInvokeInterface() {
return &gCheckInvokeInterface;
}
} // namespace art