/* This shutdown routine discards all JNI references to Java objects
that have been reflected into JS, even if there are still references
to them from JS. */
void
jsj_DiscardJavaClassReflections(JNIEnv *jEnv)
{
JSJavaThreadState *jsj_env;
char *err_msg;
JSContext *cx;
/* Get the per-thread state corresponding to the current Java thread */
jsj_env = jsj_MapJavaThreadToJSJavaThreadState(jEnv, &err_msg);
JS_ASSERT(jsj_env);
if (!jsj_env)
goto error;
/* Get the JSContext that we're supposed to use for this Java thread */
cx = jsj_env->cx;
if (!cx) {
/* We called spontaneously into JS from Java, rather than from JS into
Java and back into JS. Invoke a callback to obtain/create a
JSContext for us to use. */
if (JSJ_callbacks->map_jsj_thread_to_js_context) {
#ifdef OJI
cx = JSJ_callbacks->map_jsj_thread_to_js_context(jsj_env,
NULL, /* FIXME: What should this argument be ? */
jEnv, &err_msg);
#else
cx = JSJ_callbacks->map_jsj_thread_to_js_context(jsj_env,
jEnv, &err_msg);
#endif
if (!cx)
goto error;
} else {
err_msg = JS_smprintf("Unable to find/create JavaScript execution "
"context for JNI thread 0x%08x", jEnv);
goto error;
}
}
if (java_class_reflections) {
JSJ_HashTableEnumerateEntries(java_class_reflections,
enumerate_remove_java_class,
(void*)jsj_env);
JSJ_HashTableDestroy(java_class_reflections);
java_class_reflections = NULL;
}
return;
error:
JS_ASSERT(!cx);
if (err_msg) {
jsj_LogError(err_msg);
JS_smprintf_free(err_msg);
}
}
JSJavaThreadState *
jsj_enter_js(JNIEnv *jEnv, void* applet_obj, jobject java_wrapper_obj,
JSContext **cxp, JSObject **js_objp, JSErrorReporter *old_error_reporterp,
void **pNSIPrincipaArray, int numPrincipals, void *pNSISecurityContext)
{
JSContext *cx;
char *err_msg;
JSObject *js_obj;
JSJavaThreadState *jsj_env;
cx = NULL;
err_msg = NULL;
/* Invoke callback, presumably used to implement concurrency constraints */
if (JSJ_callbacks && JSJ_callbacks->enter_js_from_java) {
#ifdef OJI
if (!JSJ_callbacks->enter_js_from_java(jEnv, &err_msg, pNSIPrincipaArray, numPrincipals, pNSISecurityContext,applet_obj))
#else
if (!JSJ_callbacks->enter_js_from_java(jEnv, &err_msg))
#endif
goto entry_failure;
}
/* Check the JSObject pointer in the wrapper object. */
if (js_objp) {
#ifdef PRESERVE_JSOBJECT_IDENTITY
#if JS_BYTES_PER_LONG == 8
js_obj = (JSObject *)((*jEnv)->GetLongField(jEnv, java_wrapper_obj, njJSObject_long_internal));
#else
js_obj = (JSObject *)((*jEnv)->GetIntField(jEnv, java_wrapper_obj, njJSObject_internal));
#endif
#else /* !PRESERVE_JSOBJECT_IDENTITY */
js_obj = jsj_UnwrapJSObjectWrapper(jEnv, java_wrapper_obj);
#endif /* PRESERVE_JSOBJECT_IDENTITY */
JS_ASSERT(js_obj);
if (!js_obj)
goto error;
*js_objp = js_obj;
}
/* Get the per-thread state corresponding to the current Java thread */
jsj_env = jsj_MapJavaThreadToJSJavaThreadState(jEnv, &err_msg);
if (!jsj_env)
goto error;
/* Get the JSContext that we're supposed to use for this Java thread */
cx = jsj_env->cx;
if (!cx) {
/* We called spontaneously into JS from Java, rather than from JS into
Java and back into JS. Invoke a callback to obtain/create a
JSContext for us to use. */
if (JSJ_callbacks && JSJ_callbacks->map_jsj_thread_to_js_context) {
#ifdef OJI
cx = JSJ_callbacks->map_jsj_thread_to_js_context(jsj_env,
applet_obj,
jEnv, &err_msg);
#else
cx = JSJ_callbacks->map_jsj_thread_to_js_context(jsj_env,
jEnv, &err_msg);
#endif
if (!cx)
goto error;
} else {
err_msg = JS_smprintf("Unable to find/create JavaScript execution "
"context for JNI thread 0x%08x", jEnv);
goto error;
}
}
*cxp = cx;
/*
* Capture all JS error reports so that they can be thrown into the Java
* caller as an instance of netscape.javascript.JSException.
*/
*old_error_reporterp =
JS_SetErrorReporter(cx, capture_js_error_reports_for_java);
#ifdef JSJ_THREADSAFE
JS_BeginRequest(cx);
#endif
return jsj_env;
error:
/* Invoke callback, presumably used to implement concurrency constraints */
if (JSJ_callbacks && JSJ_callbacks->exit_js)
JSJ_callbacks->exit_js(jEnv, cx);
entry_failure:
if (err_msg) {
if (cx)
JS_ReportError(cx, err_msg);
else
jsj_LogError(err_msg);
free(err_msg);
}
return NULL;
}
