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bind: handle ClassNotFoundExceptions on older Androids

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If a wrapped Java class is missing at runtime, for example because
the app is running on an older Android version, the resulting class
not found exception would cause the app to crash. Fix it by ignoring
missing classes, allowing the app to avoid using them according to a
runtime version check.

Change-Id: I9138c4e2a905b180959306ecbb997695236ab273
Reviewed-on: https://go-review.googlesource.com/35853
Reviewed-by: David Crawshaw <crawshaw@golang.org>
This commit is contained in:
Elias Naur 2017-01-27 19:08:31 +01:00
parent 959f80f9a9
commit ab9391cb88
3 changed files with 156 additions and 100 deletions
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6
bind/genclasses.go
View File

@ -302,7 +302,9 @@ func (g *ClassGen) GenC() {
g.Printf("JNIEnv *env = go_seq_push_local_frame(%d);\n", len(g.classes))
g.Printf("jclass clazz;\n")
for _, cls := range g.classes {
g.Printf("clazz = (*env)->FindClass(env, %q);\n", strings.Replace(cls.FindName, ".", "/", -1))
g.Printf("clazz = go_seq_find_class(%q);\n", strings.Replace(cls.FindName, ".", "/", -1))
g.Printf("if (clazz != NULL) {\n")
g.Indent()
g.Printf("class_%s = (*env)->NewGlobalRef(env, clazz);\n", cls.JNIName)
if _, ok := g.goClsMap[cls.Name]; ok {
g.Printf("sclass_%s = (*env)->GetSuperclass(env, clazz);\n", cls.JNIName)
@ -331,6 +333,8 @@ func (g *ClassGen) GenC() {
}
}
}
g.Outdent()
g.Printf("}\n")
}
g.Printf("go_seq_pop_local_frame(env);\n")
g.Outdent()

204
bind/testdata/classes.java.c.golden vendored
View File

@ -140,88 +140,128 @@ static jmethodID m_java_io_Console_toString;
void init_proxies() {
JNIEnv *env = go_seq_push_local_frame(20);
jclass clazz;
clazz = (*env)->FindClass(env, "java/lang/Runnable");
class_java_lang_Runnable = (*env)->NewGlobalRef(env, clazz);
m_java_lang_Runnable_run = go_seq_get_method_id(clazz, "run", "()V");
clazz = (*env)->FindClass(env, "java/io/InputStream");
class_java_io_InputStream = (*env)->NewGlobalRef(env, clazz);
m_java_io_InputStream_read__ = go_seq_get_method_id(clazz, "read", "()I");
m_java_io_InputStream_read___3B = go_seq_get_method_id(clazz, "read", "([B)I");
m_java_io_InputStream_read___3BII = go_seq_get_method_id(clazz, "read", "([BII)I");
m_java_io_InputStream_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
clazz = (*env)->FindClass(env, "java/util/concurrent/Future");
class_java_util_concurrent_Future = (*env)->NewGlobalRef(env, clazz);
m_java_util_concurrent_Future_get__ = go_seq_get_method_id(clazz, "get", "()Ljava/lang/Object;");
m_java_util_concurrent_Future_get__JLjava_util_concurrent_TimeUnit_2 = go_seq_get_method_id(clazz, "get", "(JLjava/util/concurrent/TimeUnit;)Ljava/lang/Object;");
clazz = (*env)->FindClass(env, "java/lang/Object");
class_java_lang_Object = (*env)->NewGlobalRef(env, clazz);
m_java_lang_Object_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
clazz = (*env)->FindClass(env, "java/util/concurrent/TimeUnit");
class_java_util_concurrent_TimeUnit = (*env)->NewGlobalRef(env, clazz);
m_java_util_concurrent_TimeUnit_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
clazz = (*env)->FindClass(env, "java/util/Spliterators");
class_java_util_Spliterators = (*env)->NewGlobalRef(env, clazz);
m_s_java_util_Spliterators_iterator__Ljava_util_Spliterator_2 = go_seq_get_static_method_id(clazz, "iterator", "(Ljava/util/Spliterator;)Ljava/util/Iterator;");
m_s_java_util_Spliterators_iterator__Ljava_util_Spliterator_00024OfInt_2 = go_seq_get_static_method_id(clazz, "iterator", "(Ljava/util/Spliterator$OfInt;)Ljava/util/PrimitiveIterator$OfInt;");
m_s_java_util_Spliterators_iterator__Ljava_util_Spliterator_00024OfLong_2 = go_seq_get_static_method_id(clazz, "iterator", "(Ljava/util/Spliterator$OfLong;)Ljava/util/PrimitiveIterator$OfLong;");
m_s_java_util_Spliterators_iterator__Ljava_util_Spliterator_00024OfDouble_2 = go_seq_get_static_method_id(clazz, "iterator", "(Ljava/util/Spliterator$OfDouble;)Ljava/util/PrimitiveIterator$OfDouble;");
m_java_util_Spliterators_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
clazz = (*env)->FindClass(env, "java/lang/System");
class_java_lang_System = (*env)->NewGlobalRef(env, clazz);
m_s_java_lang_System_console = go_seq_get_static_method_id(clazz, "console", "()Ljava/io/Console;");
m_java_lang_System_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
clazz = (*env)->FindClass(env, "java/Future");
class_java_Future = (*env)->NewGlobalRef(env, clazz);
sclass_java_Future = (*env)->GetSuperclass(env, clazz);
sclass_java_Future = (*env)->NewGlobalRef(env, sclass_java_Future);
m_java_Future_get__ = go_seq_get_method_id(clazz, "get", "()Ljava/lang/Object;");
sm_java_Future_get__ = go_seq_get_method_id(sclass_java_Future, "get", "()Ljava/lang/Object;");
m_java_Future_get__JLjava_util_concurrent_TimeUnit_2 = go_seq_get_method_id(clazz, "get", "(JLjava/util/concurrent/TimeUnit;)Ljava/lang/Object;");
sm_java_Future_get__JLjava_util_concurrent_TimeUnit_2 = go_seq_get_method_id(sclass_java_Future, "get", "(JLjava/util/concurrent/TimeUnit;)Ljava/lang/Object;");
clazz = (*env)->FindClass(env, "java/InputStream");
class_java_InputStream = (*env)->NewGlobalRef(env, clazz);
sclass_java_InputStream = (*env)->GetSuperclass(env, clazz);
sclass_java_InputStream = (*env)->NewGlobalRef(env, sclass_java_InputStream);
m_java_InputStream_read__ = go_seq_get_method_id(clazz, "read", "()I");
sm_java_InputStream_read__ = go_seq_get_method_id(sclass_java_InputStream, "read", "()I");
m_java_InputStream_read___3B = go_seq_get_method_id(clazz, "read", "([B)I");
sm_java_InputStream_read___3B = go_seq_get_method_id(sclass_java_InputStream, "read", "([B)I");
m_java_InputStream_read___3BII = go_seq_get_method_id(clazz, "read", "([BII)I");
sm_java_InputStream_read___3BII = go_seq_get_method_id(sclass_java_InputStream, "read", "([BII)I");
m_java_InputStream_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
sm_java_InputStream_toString = go_seq_get_method_id(sclass_java_InputStream, "toString", "()Ljava/lang/String;");
clazz = (*env)->FindClass(env, "java/Object");
class_java_Object = (*env)->NewGlobalRef(env, clazz);
sclass_java_Object = (*env)->GetSuperclass(env, clazz);
sclass_java_Object = (*env)->NewGlobalRef(env, sclass_java_Object);
m_java_Object_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
sm_java_Object_toString = go_seq_get_method_id(sclass_java_Object, "toString", "()Ljava/lang/String;");
clazz = (*env)->FindClass(env, "java/Runnable");
class_java_Runnable = (*env)->NewGlobalRef(env, clazz);
sclass_java_Runnable = (*env)->GetSuperclass(env, clazz);
sclass_java_Runnable = (*env)->NewGlobalRef(env, sclass_java_Runnable);
m_java_Runnable_run = go_seq_get_method_id(clazz, "run", "()V");
sm_java_Runnable_run = go_seq_get_method_id(sclass_java_Runnable, "run", "()V");
clazz = (*env)->FindClass(env, "java/util/Iterator");
class_java_util_Iterator = (*env)->NewGlobalRef(env, clazz);
clazz = (*env)->FindClass(env, "java/util/Spliterator");
class_java_util_Spliterator = (*env)->NewGlobalRef(env, clazz);
clazz = (*env)->FindClass(env, "java/util/PrimitiveIterator$OfInt");
class_java_util_PrimitiveIterator_OfInt = (*env)->NewGlobalRef(env, clazz);
clazz = (*env)->FindClass(env, "java/util/Spliterator$OfInt");
class_java_util_Spliterator_OfInt = (*env)->NewGlobalRef(env, clazz);
clazz = (*env)->FindClass(env, "java/util/PrimitiveIterator$OfLong");
class_java_util_PrimitiveIterator_OfLong = (*env)->NewGlobalRef(env, clazz);
clazz = (*env)->FindClass(env, "java/util/Spliterator$OfLong");
class_java_util_Spliterator_OfLong = (*env)->NewGlobalRef(env, clazz);
clazz = (*env)->FindClass(env, "java/util/PrimitiveIterator$OfDouble");
class_java_util_PrimitiveIterator_OfDouble = (*env)->NewGlobalRef(env, clazz);
clazz = (*env)->FindClass(env, "java/util/Spliterator$OfDouble");
class_java_util_Spliterator_OfDouble = (*env)->NewGlobalRef(env, clazz);
clazz = (*env)->FindClass(env, "java/io/Console");
class_java_io_Console = (*env)->NewGlobalRef(env, clazz);
m_java_io_Console_flush = go_seq_get_method_id(clazz, "flush", "()V");
m_java_io_Console_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
clazz = go_seq_find_class("java/lang/Runnable");
if (clazz != NULL) {
class_java_lang_Runnable = (*env)->NewGlobalRef(env, clazz);
m_java_lang_Runnable_run = go_seq_get_method_id(clazz, "run", "()V");
}
clazz = go_seq_find_class("java/io/InputStream");
if (clazz != NULL) {
class_java_io_InputStream = (*env)->NewGlobalRef(env, clazz);
m_java_io_InputStream_read__ = go_seq_get_method_id(clazz, "read", "()I");
m_java_io_InputStream_read___3B = go_seq_get_method_id(clazz, "read", "([B)I");
m_java_io_InputStream_read___3BII = go_seq_get_method_id(clazz, "read", "([BII)I");
m_java_io_InputStream_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
}
clazz = go_seq_find_class("java/util/concurrent/Future");
if (clazz != NULL) {
class_java_util_concurrent_Future = (*env)->NewGlobalRef(env, clazz);
m_java_util_concurrent_Future_get__ = go_seq_get_method_id(clazz, "get", "()Ljava/lang/Object;");
m_java_util_concurrent_Future_get__JLjava_util_concurrent_TimeUnit_2 = go_seq_get_method_id(clazz, "get", "(JLjava/util/concurrent/TimeUnit;)Ljava/lang/Object;");
}
clazz = go_seq_find_class("java/lang/Object");
if (clazz != NULL) {
class_java_lang_Object = (*env)->NewGlobalRef(env, clazz);
m_java_lang_Object_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
}
clazz = go_seq_find_class("java/util/concurrent/TimeUnit");
if (clazz != NULL) {
class_java_util_concurrent_TimeUnit = (*env)->NewGlobalRef(env, clazz);
m_java_util_concurrent_TimeUnit_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
}
clazz = go_seq_find_class("java/util/Spliterators");
if (clazz != NULL) {
class_java_util_Spliterators = (*env)->NewGlobalRef(env, clazz);
m_s_java_util_Spliterators_iterator__Ljava_util_Spliterator_2 = go_seq_get_static_method_id(clazz, "iterator", "(Ljava/util/Spliterator;)Ljava/util/Iterator;");
m_s_java_util_Spliterators_iterator__Ljava_util_Spliterator_00024OfInt_2 = go_seq_get_static_method_id(clazz, "iterator", "(Ljava/util/Spliterator$OfInt;)Ljava/util/PrimitiveIterator$OfInt;");
m_s_java_util_Spliterators_iterator__Ljava_util_Spliterator_00024OfLong_2 = go_seq_get_static_method_id(clazz, "iterator", "(Ljava/util/Spliterator$OfLong;)Ljava/util/PrimitiveIterator$OfLong;");
m_s_java_util_Spliterators_iterator__Ljava_util_Spliterator_00024OfDouble_2 = go_seq_get_static_method_id(clazz, "iterator", "(Ljava/util/Spliterator$OfDouble;)Ljava/util/PrimitiveIterator$OfDouble;");
m_java_util_Spliterators_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
}
clazz = go_seq_find_class("java/lang/System");
if (clazz != NULL) {
class_java_lang_System = (*env)->NewGlobalRef(env, clazz);
m_s_java_lang_System_console = go_seq_get_static_method_id(clazz, "console", "()Ljava/io/Console;");
m_java_lang_System_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
}
clazz = go_seq_find_class("java/Future");
if (clazz != NULL) {
class_java_Future = (*env)->NewGlobalRef(env, clazz);
sclass_java_Future = (*env)->GetSuperclass(env, clazz);
sclass_java_Future = (*env)->NewGlobalRef(env, sclass_java_Future);
m_java_Future_get__ = go_seq_get_method_id(clazz, "get", "()Ljava/lang/Object;");
sm_java_Future_get__ = go_seq_get_method_id(sclass_java_Future, "get", "()Ljava/lang/Object;");
m_java_Future_get__JLjava_util_concurrent_TimeUnit_2 = go_seq_get_method_id(clazz, "get", "(JLjava/util/concurrent/TimeUnit;)Ljava/lang/Object;");
sm_java_Future_get__JLjava_util_concurrent_TimeUnit_2 = go_seq_get_method_id(sclass_java_Future, "get", "(JLjava/util/concurrent/TimeUnit;)Ljava/lang/Object;");
}
clazz = go_seq_find_class("java/InputStream");
if (clazz != NULL) {
class_java_InputStream = (*env)->NewGlobalRef(env, clazz);
sclass_java_InputStream = (*env)->GetSuperclass(env, clazz);
sclass_java_InputStream = (*env)->NewGlobalRef(env, sclass_java_InputStream);
m_java_InputStream_read__ = go_seq_get_method_id(clazz, "read", "()I");
sm_java_InputStream_read__ = go_seq_get_method_id(sclass_java_InputStream, "read", "()I");
m_java_InputStream_read___3B = go_seq_get_method_id(clazz, "read", "([B)I");
sm_java_InputStream_read___3B = go_seq_get_method_id(sclass_java_InputStream, "read", "([B)I");
m_java_InputStream_read___3BII = go_seq_get_method_id(clazz, "read", "([BII)I");
sm_java_InputStream_read___3BII = go_seq_get_method_id(sclass_java_InputStream, "read", "([BII)I");
m_java_InputStream_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
sm_java_InputStream_toString = go_seq_get_method_id(sclass_java_InputStream, "toString", "()Ljava/lang/String;");
}
clazz = go_seq_find_class("java/Object");
if (clazz != NULL) {
class_java_Object = (*env)->NewGlobalRef(env, clazz);
sclass_java_Object = (*env)->GetSuperclass(env, clazz);
sclass_java_Object = (*env)->NewGlobalRef(env, sclass_java_Object);
m_java_Object_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
sm_java_Object_toString = go_seq_get_method_id(sclass_java_Object, "toString", "()Ljava/lang/String;");
}
clazz = go_seq_find_class("java/Runnable");
if (clazz != NULL) {
class_java_Runnable = (*env)->NewGlobalRef(env, clazz);
sclass_java_Runnable = (*env)->GetSuperclass(env, clazz);
sclass_java_Runnable = (*env)->NewGlobalRef(env, sclass_java_Runnable);
m_java_Runnable_run = go_seq_get_method_id(clazz, "run", "()V");
sm_java_Runnable_run = go_seq_get_method_id(sclass_java_Runnable, "run", "()V");
}
clazz = go_seq_find_class("java/util/Iterator");
if (clazz != NULL) {
class_java_util_Iterator = (*env)->NewGlobalRef(env, clazz);
}
clazz = go_seq_find_class("java/util/Spliterator");
if (clazz != NULL) {
class_java_util_Spliterator = (*env)->NewGlobalRef(env, clazz);
}
clazz = go_seq_find_class("java/util/PrimitiveIterator$OfInt");
if (clazz != NULL) {
class_java_util_PrimitiveIterator_OfInt = (*env)->NewGlobalRef(env, clazz);
}
clazz = go_seq_find_class("java/util/Spliterator$OfInt");
if (clazz != NULL) {
class_java_util_Spliterator_OfInt = (*env)->NewGlobalRef(env, clazz);
}
clazz = go_seq_find_class("java/util/PrimitiveIterator$OfLong");
if (clazz != NULL) {
class_java_util_PrimitiveIterator_OfLong = (*env)->NewGlobalRef(env, clazz);
}
clazz = go_seq_find_class("java/util/Spliterator$OfLong");
if (clazz != NULL) {
class_java_util_Spliterator_OfLong = (*env)->NewGlobalRef(env, clazz);
}
clazz = go_seq_find_class("java/util/PrimitiveIterator$OfDouble");
if (clazz != NULL) {
class_java_util_PrimitiveIterator_OfDouble = (*env)->NewGlobalRef(env, clazz);
}
clazz = go_seq_find_class("java/util/Spliterator$OfDouble");
if (clazz != NULL) {
class_java_util_Spliterator_OfDouble = (*env)->NewGlobalRef(env, clazz);
}
clazz = go_seq_find_class("java/io/Console");
if (clazz != NULL) {
class_java_io_Console = (*env)->NewGlobalRef(env, clazz);
m_java_io_Console_flush = go_seq_get_method_id(clazz, "flush", "()V");
m_java_io_Console_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
}
go_seq_pop_local_frame(env);
}

46
bind/testdata/java.java.c.golden vendored
View File

@ -19,23 +19,35 @@ static jmethodID m_java_lang_Character_Subset_toString;
void init_proxies() {
JNIEnv *env = go_seq_push_local_frame(6);
jclass clazz;
clazz = (*env)->FindClass(env, "java/lang/Float");
class_java_lang_Float = (*env)->NewGlobalRef(env, clazz);
m_java_lang_Float_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
clazz = (*env)->FindClass(env, "java/lang/Long");
class_java_lang_Long = (*env)->NewGlobalRef(env, clazz);
m_java_lang_Long_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
clazz = (*env)->FindClass(env, "java/lang/Object");
class_java_lang_Object = (*env)->NewGlobalRef(env, clazz);
m_java_lang_Object_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
clazz = (*env)->FindClass(env, "java/lang/Runnable");
class_java_lang_Runnable = (*env)->NewGlobalRef(env, clazz);
clazz = (*env)->FindClass(env, "java/lang/Character");
class_java_lang_Character = (*env)->NewGlobalRef(env, clazz);
m_java_lang_Character_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
clazz = (*env)->FindClass(env, "java/lang/Character$Subset");
class_java_lang_Character_Subset = (*env)->NewGlobalRef(env, clazz);
m_java_lang_Character_Subset_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
clazz = go_seq_find_class("java/lang/Float");
if (clazz != NULL) {
class_java_lang_Float = (*env)->NewGlobalRef(env, clazz);
m_java_lang_Float_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
}
clazz = go_seq_find_class("java/lang/Long");
if (clazz != NULL) {
class_java_lang_Long = (*env)->NewGlobalRef(env, clazz);
m_java_lang_Long_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
}
clazz = go_seq_find_class("java/lang/Object");
if (clazz != NULL) {
class_java_lang_Object = (*env)->NewGlobalRef(env, clazz);
m_java_lang_Object_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
}
clazz = go_seq_find_class("java/lang/Runnable");
if (clazz != NULL) {
class_java_lang_Runnable = (*env)->NewGlobalRef(env, clazz);
}
clazz = go_seq_find_class("java/lang/Character");
if (clazz != NULL) {
class_java_lang_Character = (*env)->NewGlobalRef(env, clazz);
m_java_lang_Character_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
}
clazz = go_seq_find_class("java/lang/Character$Subset");
if (clazz != NULL) {
class_java_lang_Character_Subset = (*env)->NewGlobalRef(env, clazz);
m_java_lang_Character_Subset_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
}
go_seq_pop_local_frame(env);
}