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jni: merge jni.c into jni.go

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As a bonus, the C functions can be static.

Signed-off-by: Elias Naur <mail@eliasnaur.com>
pull/13/head
Elias Naur 3 years ago
parent 2f7b27412a
commit d67229dc38
2 changed files with 130 additions and 158 deletions
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105
jni/jni.c
Unescape Escape View File

@ -1,105 +0,0 @@
#include <jni.h>
jint _jni_AttachCurrentThread(JavaVM *vm, JNIEnv **p_env, void *thr_args) {
return (*vm)->AttachCurrentThread(vm, p_env, thr_args);
}
jint _jni_DetachCurrentThread(JavaVM *vm) {
return (*vm)->DetachCurrentThread(vm);
}
jint _jni_GetEnv(JavaVM *vm, JNIEnv **env, jint version) {
return (*vm)->GetEnv(vm, (void **)env, version);
}
jclass _jni_FindClass(JNIEnv *env, const char *name) {
return (*env)->FindClass(env, name);
}
jthrowable _jni_ExceptionOccurred(JNIEnv *env) {
return (*env)->ExceptionOccurred(env);
}
void _jni_ExceptionClear(JNIEnv *env) {
(*env)->ExceptionClear(env);
}
jclass _jni_GetObjectClass(JNIEnv *env, jobject obj) {
return (*env)->GetObjectClass(env, obj);
}
jmethodID _jni_GetMethodID(JNIEnv *env, jclass clazz, const char *name, const char *sig) {
return (*env)->GetMethodID(env, clazz, name, sig);
}
jmethodID _jni_GetStaticMethodID(JNIEnv *env, jclass clazz, const char *name, const char *sig) {
return (*env)->GetStaticMethodID(env, clazz, name, sig);
}
jsize _jni_GetStringLength(JNIEnv *env, jstring str) {
return (*env)->GetStringLength(env, str);
}
const jchar *_jni_GetStringChars(JNIEnv *env, jstring str) {
return (*env)->GetStringChars(env, str, NULL);
}
jstring _jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len) {
return (*env)->NewString(env, unicodeChars, len);
}
jboolean _jni_IsSameObject(JNIEnv *env, jobject ref1, jobject ref2) {
return (*env)->IsSameObject(env, ref1, ref2);
}
jobject _jni_NewGlobalRef(JNIEnv *env, jobject obj) {
return (*env)->NewGlobalRef(env, obj);
}
void _jni_DeleteGlobalRef(JNIEnv *env, jobject obj) {
(*env)->DeleteGlobalRef(env, obj);
}
void _jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID method, jvalue *args) {
(*env)->CallStaticVoidMethodA(env, cls, method, args);
}
jint _jni_CallStaticIntMethodA(JNIEnv *env, jclass cls, jmethodID method, jvalue *args) {
return (*env)->CallStaticIntMethodA(env, cls, method, args);
}
jobject _jni_CallStaticObjectMethodA(JNIEnv *env, jclass cls, jmethodID method, jvalue *args) {
return (*env)->CallStaticObjectMethodA(env, cls, method, args);
}
jobject _jni_CallObjectMethodA(JNIEnv *env, jobject obj, jmethodID method, jvalue *args) {
return (*env)->CallObjectMethodA(env, obj, method, args);
}
jboolean _jni_CallBooleanMethodA(JNIEnv *env, jobject obj, jmethodID method, jvalue *args) {
return (*env)->CallBooleanMethodA(env, obj, method, args);
}
jint _jni_CallIntMethodA(JNIEnv *env, jobject obj, jmethodID method, jvalue *args) {
return (*env)->CallIntMethodA(env, obj, method, args);
}
void _jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID method, jvalue *args) {
(*env)->CallVoidMethodA(env, obj, method, args);
}
jbyteArray _jni_NewByteArray(JNIEnv *env, jsize length) {
return (*env)->NewByteArray(env, length);
}
jbyte *_jni_GetByteArrayElements(JNIEnv *env, jbyteArray arr) {
return (*env)->GetByteArrayElements(env, arr, NULL);
}
void _jni_ReleaseByteArrayElements(JNIEnv *env, jbyteArray arr, jbyte *elems, jint mode) {
(*env)->ReleaseByteArrayElements(env, arr, elems, mode);
}
jsize _jni_GetArrayLength(JNIEnv *env, jarray arr) {
return (*env)->GetArrayLength(env, arr);
}

183
jni/jni.go
Unescape Escape View File

@ -21,32 +21,109 @@ import (
#include <jni.h>
#include <stdlib.h>
__attribute__ ((visibility ("hidden"))) jint _jni_GetEnv(JavaVM *vm, JNIEnv **env, jint version);
__attribute__ ((visibility ("hidden"))) jint _jni_AttachCurrentThread(JavaVM *vm, JNIEnv **p_env, void *thr_args);
__attribute__ ((visibility ("hidden"))) jint _jni_DetachCurrentThread(JavaVM *vm);
__attribute__ ((visibility ("hidden"))) jclass _jni_FindClass(JNIEnv *env, const char *name);
__attribute__ ((visibility ("hidden"))) jthrowable _jni_ExceptionOccurred(JNIEnv *env);
__attribute__ ((visibility ("hidden"))) void _jni_ExceptionClear(JNIEnv *env);
__attribute__ ((visibility ("hidden"))) jclass _jni_GetObjectClass(JNIEnv *env, jobject obj);
__attribute__ ((visibility ("hidden"))) jmethodID _jni_GetMethodID(JNIEnv *env, jclass clazz, const char *name, const char *sig);
__attribute__ ((visibility ("hidden"))) jmethodID _jni_GetStaticMethodID(JNIEnv *env, jclass clazz, const char *name, const char *sig);
__attribute__ ((visibility ("hidden"))) jsize _jni_GetStringLength(JNIEnv *env, jstring str);
__attribute__ ((visibility ("hidden"))) const jchar *_jni_GetStringChars(JNIEnv *env, jstring str);
__attribute__ ((visibility ("hidden"))) jstring _jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len);
__attribute__ ((visibility ("hidden"))) jboolean _jni_IsSameObject(JNIEnv *env, jobject ref1, jobject ref2);
__attribute__ ((visibility ("hidden"))) jobject _jni_NewGlobalRef(JNIEnv *env, jobject obj);
__attribute__ ((visibility ("hidden"))) void _jni_DeleteGlobalRef(JNIEnv *env, jobject obj);
__attribute__ ((visibility ("hidden"))) jint _jni_CallStaticIntMethodA(JNIEnv *env, jclass cls, jmethodID method, jvalue *args);
__attribute__ ((visibility ("hidden"))) jobject _jni_CallStaticObjectMethodA(JNIEnv *env, jclass cls, jmethodID method, jvalue *args);
__attribute__ ((visibility ("hidden"))) void _jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID method, jvalue *args);
__attribute__ ((visibility ("hidden"))) jobject _jni_CallObjectMethodA(JNIEnv *env, jobject obj, jmethodID method, jvalue *args);
__attribute__ ((visibility ("hidden"))) jboolean _jni_CallBooleanMethodA(JNIEnv *env, jobject obj, jmethodID method, jvalue *args);
__attribute__ ((visibility ("hidden"))) jint _jni_CallIntMethodA(JNIEnv *env, jobject obj, jmethodID method, jvalue *args);
__attribute__ ((visibility ("hidden"))) void _jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID method, jvalue *args);
__attribute__ ((visibility ("hidden"))) jbyteArray _jni_NewByteArray(JNIEnv *env, jsize length);
__attribute__ ((visibility ("hidden"))) jbyte *_jni_GetByteArrayElements(JNIEnv *env, jbyteArray arr);
__attribute__ ((visibility ("hidden"))) void _jni_ReleaseByteArrayElements(JNIEnv *env, jbyteArray arr, jbyte *elems, jint mode);
__attribute__ ((visibility ("hidden"))) jsize _jni_GetArrayLength(JNIEnv *env, jarray arr);
static jint jni_AttachCurrentThread(JavaVM *vm, JNIEnv **p_env, void *thr_args) {
return (*vm)->AttachCurrentThread(vm, p_env, thr_args);
}
static jint jni_DetachCurrentThread(JavaVM *vm) {
return (*vm)->DetachCurrentThread(vm);
}
static jint jni_GetEnv(JavaVM *vm, JNIEnv **env, jint version) {
return (*vm)->GetEnv(vm, (void **)env, version);
}
static jclass jni_FindClass(JNIEnv *env, const char *name) {
return (*env)->FindClass(env, name);
}
static jthrowable jni_ExceptionOccurred(JNIEnv *env) {
return (*env)->ExceptionOccurred(env);
}
static void jni_ExceptionClear(JNIEnv *env) {
(*env)->ExceptionClear(env);
}
static jclass jni_GetObjectClass(JNIEnv *env, jobject obj) {
return (*env)->GetObjectClass(env, obj);
}
static jmethodID jni_GetMethodID(JNIEnv *env, jclass clazz, const char *name, const char *sig) {
return (*env)->GetMethodID(env, clazz, name, sig);
}
static jmethodID jni_GetStaticMethodID(JNIEnv *env, jclass clazz, const char *name, const char *sig) {
return (*env)->GetStaticMethodID(env, clazz, name, sig);
}
static jsize jni_GetStringLength(JNIEnv *env, jstring str) {
return (*env)->GetStringLength(env, str);
}
static const jchar *jni_GetStringChars(JNIEnv *env, jstring str) {
return (*env)->GetStringChars(env, str, NULL);
}
static jstring jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len) {
return (*env)->NewString(env, unicodeChars, len);
}
static jboolean jni_IsSameObject(JNIEnv *env, jobject ref1, jobject ref2) {
return (*env)->IsSameObject(env, ref1, ref2);
}
static jobject jni_NewGlobalRef(JNIEnv *env, jobject obj) {
return (*env)->NewGlobalRef(env, obj);
}
static void jni_DeleteGlobalRef(JNIEnv *env, jobject obj) {
(*env)->DeleteGlobalRef(env, obj);
}
static void jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID method, jvalue *args) {
(*env)->CallStaticVoidMethodA(env, cls, method, args);
}
static jint jni_CallStaticIntMethodA(JNIEnv *env, jclass cls, jmethodID method, jvalue *args) {
return (*env)->CallStaticIntMethodA(env, cls, method, args);
}
static jobject jni_CallStaticObjectMethodA(JNIEnv *env, jclass cls, jmethodID method, jvalue *args) {
return (*env)->CallStaticObjectMethodA(env, cls, method, args);
}
static jobject jni_CallObjectMethodA(JNIEnv *env, jobject obj, jmethodID method, jvalue *args) {
return (*env)->CallObjectMethodA(env, obj, method, args);
}
static jboolean jni_CallBooleanMethodA(JNIEnv *env, jobject obj, jmethodID method, jvalue *args) {
return (*env)->CallBooleanMethodA(env, obj, method, args);
}
static jint jni_CallIntMethodA(JNIEnv *env, jobject obj, jmethodID method, jvalue *args) {
return (*env)->CallIntMethodA(env, obj, method, args);
}
static void jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID method, jvalue *args) {
(*env)->CallVoidMethodA(env, obj, method, args);
}
static jbyteArray jni_NewByteArray(JNIEnv *env, jsize length) {
return (*env)->NewByteArray(env, length);
}
static jbyte *jni_GetByteArrayElements(JNIEnv *env, jbyteArray arr) {
return (*env)->GetByteArrayElements(env, arr, NULL);
}
static void jni_ReleaseByteArrayElements(JNIEnv *env, jbyteArray arr, jbyte *elems, jint mode) {
(*env)->ReleaseByteArrayElements(env, arr, elems, mode);
}
static jsize jni_GetArrayLength(JNIEnv *env, jarray arr) {
return (*env)->GetArrayLength(env, arr);
}
*/
import "C"
@ -78,14 +155,14 @@ func Do(vm *JVM, f func(env *Env) error) error {
runtime.LockOSThread()
defer runtime.UnlockOSThread()
var env *C.JNIEnv
if res := C._jni_GetEnv(javavm(vm), &env, C.JNI_VERSION_1_6); res != C.JNI_OK {
if res := C.jni_GetEnv(javavm(vm), &env, C.JNI_VERSION_1_6); res != C.JNI_OK {
if res != C.JNI_EDETACHED {
panic(fmt.Errorf("JNI GetEnv failed with error %d", res))
}
if C._jni_AttachCurrentThread(javavm(vm), &env, nil) != C.JNI_OK {
if C.jni_AttachCurrentThread(javavm(vm), &env, nil) != C.JNI_OK {
panic(errors.New("runInJVM: AttachCurrentThread failed"))
}
defer C._jni_DetachCurrentThread(javavm(vm))
defer C.jni_DetachCurrentThread(javavm(vm))
}
return f((*Env)(unsafe.Pointer(env)))
@ -106,42 +183,42 @@ func varArgs(args []Value) *C.jvalue {
}
func IsSameObject(e *Env, ref1, ref2 Object) bool {
same := C._jni_IsSameObject(env(e), C.jobject(ref1), C.jobject(ref2))
same := C.jni_IsSameObject(env(e), C.jobject(ref1), C.jobject(ref2))
return same == C.JNI_TRUE
}
func CallStaticIntMethod(e *Env, cls Class, method MethodID, args ...Value) (int, error) {
res := C._jni_CallStaticIntMethodA(env(e), C.jclass(cls), C.jmethodID(method), varArgs(args))
res := C.jni_CallStaticIntMethodA(env(e), C.jclass(cls), C.jmethodID(method), varArgs(args))
return int(res), exception(e)
}
func CallStaticVoidMethod(e *Env, cls Class, method MethodID, args ...Value) error {
C._jni_CallStaticVoidMethodA(env(e), C.jclass(cls), C.jmethodID(method), varArgs(args))
C.jni_CallStaticVoidMethodA(env(e), C.jclass(cls), C.jmethodID(method), varArgs(args))
return exception(e)
}
func CallVoidMethod(e *Env, obj Object, method MethodID, args ...Value) error {
C._jni_CallVoidMethodA(env(e), C.jobject(obj), C.jmethodID(method), varArgs(args))
C.jni_CallVoidMethodA(env(e), C.jobject(obj), C.jmethodID(method), varArgs(args))
return exception(e)
}
func CallStaticObjectMethod(e *Env, cls Class, method MethodID, args ...Value) (Object, error) {
res := C._jni_CallStaticObjectMethodA(env(e), C.jclass(cls), C.jmethodID(method), varArgs(args))
res := C.jni_CallStaticObjectMethodA(env(e), C.jclass(cls), C.jmethodID(method), varArgs(args))
return Object(res), exception(e)
}
func CallObjectMethod(e *Env, obj Object, method MethodID, args ...Value) (Object, error) {
res := C._jni_CallObjectMethodA(env(e), C.jobject(obj), C.jmethodID(method), varArgs(args))
res := C.jni_CallObjectMethodA(env(e), C.jobject(obj), C.jmethodID(method), varArgs(args))
return Object(res), exception(e)
}
func CallBooleanMethod(e *Env, obj Object, method MethodID, args ...Value) (bool, error) {
res := C._jni_CallBooleanMethodA(env(e), C.jobject(obj), C.jmethodID(method), varArgs(args))
res := C.jni_CallBooleanMethodA(env(e), C.jobject(obj), C.jmethodID(method), varArgs(args))
return res == C.JNI_TRUE, exception(e)
}
func CallIntMethod(e *Env, obj Object, method MethodID, args ...Value) (int32, error) {
res := C._jni_CallIntMethodA(env(e), C.jobject(obj), C.jmethodID(method), varArgs(args))
res := C.jni_CallIntMethodA(env(e), C.jobject(obj), C.jmethodID(method), varArgs(args))
return int32(res), exception(e)
}
@ -150,9 +227,9 @@ func GetByteArrayElements(e *Env, jarr ByteArray) []byte {
if jarr == 0 {
return nil
}
size := C._jni_GetArrayLength(env(e), C.jarray(jarr))
elems := C._jni_GetByteArrayElements(env(e), C.jbyteArray(jarr))
defer C._jni_ReleaseByteArrayElements(env(e), C.jbyteArray(jarr), elems, 0)
size := C.jni_GetArrayLength(env(e), C.jarray(jarr))
elems := C.jni_GetByteArrayElements(env(e), C.jbyteArray(jarr))
defer C.jni_ReleaseByteArrayElements(env(e), C.jbyteArray(jarr), elems, 0)
backing := (*(*[1 << 30]byte)(unsafe.Pointer(elems)))[:size:size]
s := make([]byte, len(backing))
copy(s, backing)
@ -162,12 +239,12 @@ func GetByteArrayElements(e *Env, jarr ByteArray) []byte {
// NewByteArray allocates a Java byte array with the content. It
// panics if the allocation fails.
func NewByteArray(e *Env, content []byte) ByteArray {
jarr := C._jni_NewByteArray(env(e), C.jsize(len(content)))
jarr := C.jni_NewByteArray(env(e), C.jsize(len(content)))
if jarr == 0 {
panic(fmt.Errorf("jni: NewByteArray(%d) failed", len(content)))
}
elems := C._jni_GetByteArrayElements(env(e), jarr)
defer C._jni_ReleaseByteArrayElements(env(e), jarr, elems, 0)
elems := C.jni_GetByteArrayElements(env(e), jarr)
defer C.jni_ReleaseByteArrayElements(env(e), jarr, elems, 0)
backing := (*(*[1 << 30]byte)(unsafe.Pointer(elems)))[:len(content):len(content)]
copy(backing, content)
return ByteArray(jarr)
@ -203,11 +280,11 @@ func LoadClass(e *Env, loader Object, class string) (Class, error) {
// exception, and clears it. exceptionError returns nil if no
// exception is pending.
func exception(e *Env) error {
thr := C._jni_ExceptionOccurred(env(e))
thr := C.jni_ExceptionOccurred(env(e))
if thr == 0 {
return nil
}
C._jni_ExceptionClear(env(e))
C.jni_ExceptionClear(env(e))
cls := GetObjectClass(e, Object(thr))
toString := GetMethodID(e, cls, "toString", "()Ljava/lang/String;")
msg, err := CallObjectMethod(e, Object(thr), toString)
@ -222,7 +299,7 @@ func GetObjectClass(e *Env, obj Object) Class {
if obj == 0 {
panic("null object")
}
cls := C._jni_GetObjectClass(env(e), C.jobject(obj))
cls := C.jni_GetObjectClass(env(e), C.jobject(obj))
if err := exception(e); err != nil {
// GetObjectClass should never fail.
panic(err)
@ -237,7 +314,7 @@ func GetStaticMethodID(e *Env, cls Class, name, signature string) MethodID {
defer C.free(unsafe.Pointer(mname))
msig := C.CString(signature)
defer C.free(unsafe.Pointer(msig))
m := C._jni_GetStaticMethodID(env(e), C.jclass(cls), mname, msig)
m := C.jni_GetStaticMethodID(env(e), C.jclass(cls), mname, msig)
if err := exception(e); err != nil {
panic(err)
}
@ -251,7 +328,7 @@ func GetMethodID(e *Env, cls Class, name, signature string) MethodID {
defer C.free(unsafe.Pointer(mname))
msig := C.CString(signature)
defer C.free(unsafe.Pointer(msig))
m := C._jni_GetMethodID(env(e), C.jclass(cls), mname, msig)
m := C.jni_GetMethodID(env(e), C.jclass(cls), mname, msig)
if err := exception(e); err != nil {
panic(err)
}
@ -259,11 +336,11 @@ func GetMethodID(e *Env, cls Class, name, signature string) MethodID {
}
func NewGlobalRef(e *Env, obj Object) Object {
return Object(C._jni_NewGlobalRef(env(e), C.jobject(obj)))
return Object(C.jni_NewGlobalRef(env(e), C.jobject(obj)))
}
func DeleteGlobalRef(e *Env, obj Object) {
C._jni_DeleteGlobalRef(env(e), C.jobject(obj))
C.jni_DeleteGlobalRef(env(e), C.jobject(obj))
}
// JavaString converts the string to a JVM jstring.
@ -272,7 +349,7 @@ func JavaString(e *Env, str string) String {
return 0
}
utf16Chars := utf16.Encode([]rune(str))
res := C._jni_NewString(env(e), (*C.jchar)(unsafe.Pointer(&utf16Chars[0])), C.int(len(utf16Chars)))
res := C.jni_NewString(env(e), (*C.jchar)(unsafe.Pointer(&utf16Chars[0])), C.int(len(utf16Chars)))
return String(res)
}
@ -281,8 +358,8 @@ func GoString(e *Env, str String) string {
if str == 0 {
return ""
}
strlen := C._jni_GetStringLength(env(e), C.jstring(str))
chars := C._jni_GetStringChars(env(e), C.jstring(str))
strlen := C.jni_GetStringLength(env(e), C.jstring(str))
chars := C.jni_GetStringChars(env(e), C.jstring(str))
var utf16Chars []uint16
hdr := (*reflect.SliceHeader)(unsafe.Pointer(&utf16Chars))
hdr.Data = uintptr(unsafe.Pointer(chars))

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