Exemplo n.º 1
0
static void heapDumpCallback(void* ptr, unsigned char kind, size_t sz, void* data) {
    if ((kind == GC_gcj_kind || kind == objectArrayGCKind) && ptr) {
        Object* obj = (Object*) ptr;
        if (obj->clazz) {
            if (obj->clazz == java_lang_Class) {
                Class* clazz = (Class*) obj;
                fprintf(stderr, "  n%p [label=\"Class %s]\n", clazz, clazz->name); //, clazz->classDataSize);
                if (clazz->_data) {
                    fprintf(stderr, "  n%p -> n%p\n", clazz, clazz->_data);
                }
                void** start = (void**) (((char*) clazz) + offsetof(Class, data));
                void** end = (void**) (((char*) start) + clazz->classRefCount * sizeof(Object*));
                dumpRefs(clazz, start, end);
            } else if (CLASS_IS_ARRAY(obj->clazz)) {
                if (obj->clazz->name[1] == 'C') {
                    // Array of chars. Include the 29 first characters in the dump.
                    char s[30];
                    memset(s, 0, sizeof(s));
                    jint length = ((Array*) obj)->length;
                    length = length > sizeof(s) - 1 ? sizeof(s) - 1 : length;
                    for (jint i = 0; i < length; i++) {
                        s[i] = (char) ((CharArray*) obj)->values[i];
                    }
                    fprintf(stderr, "  n%p [label=\"%s[%d] = %s\"]\n", obj, obj->clazz->name, ((Array*) obj)->length, s);
                } else {
                    fprintf(stderr, "  n%p [label=\"%s[%d]\"]\n", obj, obj->clazz->name, ((Array*) obj)->length);
                    if (!CLASS_IS_PRIMITIVE(obj->clazz->componentType)) {
                        ObjectArray* array = (ObjectArray*) obj;
                        void** start = (void**) (((char*) array) + offsetof(ObjectArray, values));
                        void** end = (void**) (((char*) start) + sizeof(Object*) * array->length);
                        dumpRefs(array, start, end);
                    }
                }
            } else {
                Class* clazz = obj->clazz;
                fprintf(stderr, "  n%p [label=\"Instance %s\"]\n", obj, obj->clazz->name);
                while (clazz != NULL) {
                    void** start = (void**) (((char*) obj) + clazz->instanceDataOffset);
                    void** end = (void**) (((char*) start) + clazz->instanceRefCount * sizeof(Object*));
                    if (clazz == java_lang_ref_Reference) {
                        void** referent_start = (void**) (((char*) obj) + java_lang_ref_Reference_referent->offset);
                        void** referent_end = (void**) (((char*) referent_start) + sizeof(Object*));
                        //if (*referent_start) {
                            //fprintf(stderr, "\t%p (weak)\n", *referent_start);
                        //}
                        dumpRefs(obj, start, referent_start);
                        dumpRefs(obj, referent_end, end);
                    } else {
                        dumpRefs(obj, start, end);
                    }
                    clazz = clazz->superclass;
                }
            }
        }
    }
}
Exemplo n.º 2
0
static void heapDumpCallback(void* ptr, unsigned char kind, size_t sz, void* data) {
    if (kind == objectGCKind || kind == largeArrayGCKind || kind == atomicObjectGCKind) {
        Object* obj = (Object*) ptr;
        if (obj->clazz == java_lang_Class) {
            Class* clazz = (Class*) obj;
            fprintf(stderr, "%p (class %s of size %d bytes)\n", clazz, clazz->name, clazz->classDataSize);
            if (clazz->_data) {
                fprintf(stderr, "\t%p\n", clazz->_data);
            }
            void** start = (void**) (((char*) clazz) + offsetof(Class, data));
            void** end = (void**) (((char*) start) + clazz->classRefCount * sizeof(Object*));
            dumpRefs(start, end);
        } else if (CLASS_IS_ARRAY(obj->clazz)) {
            fprintf(stderr, "%p (array of type %s of length %d elements)\n", obj, obj->clazz->name, ((Array*) obj)->length);
            if (!CLASS_IS_PRIMITIVE(obj->clazz->componentType)) {
                ObjectArray* array = (ObjectArray*) obj;
                void** start = (void**) (((char*) array) + offsetof(ObjectArray, values));
                void** end = (void**) (((char*) start) + sizeof(Object*) * array->length);
                dumpRefs(start, end);
            }
        } else {
            Class* clazz = obj->clazz;
            fprintf(stderr, "%p (object of type %s of size %d bytes)\n", obj, clazz->name, clazz->instanceDataSize);
            while (clazz != NULL) {
                void** start = (void**) (((char*) obj) + clazz->instanceDataOffset);
                void** end = (void**) (((char*) start) + clazz->instanceRefCount * sizeof(Object*));
                if (clazz == java_lang_ref_Reference) {
                    void** referent_start = (void**) (((char*) obj) + java_lang_ref_Reference_referent->offset);
                    void** referent_end = (void**) (((char*) referent_start) + sizeof(Object*));
                    if (*referent_start) {
                        fprintf(stderr, "\t%p (weak)\n", *referent_start);
                    }
                    dumpRefs(start, referent_start);
                    dumpRefs(referent_end, end);
                } else {
                    dumpRefs(start, end);
                }
                clazz = clazz->superclass;
            }
        }
    }
}