Function get_env

android/samples/fiber/HttpFiber/src/main/cpp/Fiber.cpp:12–37

static JavaVM* g_jvm = NULL;

static JNIEnv* get_env(void) {
    JNIEnv* env;
    int status = g_jvm->GetEnv((void**) &env, JNI_VERSION_1_6);
    if (status == JNI_EDETACHED || env == NULL) {
        log_info("get_env(%d): status=%d, %d, env=%p",
                 __LINE__, status, JNI_EDETACHED, env);

        log_info("try call AttachCurrentThread to get env, jvm=%p", g_jvm);
        //status = g_jvm->AttachCurrentThreadAsDaemon(&env, NULL);
        status = g_jvm->AttachCurrentThread(&env, NULL);
        if (status != JNI_OK || env == NULL) {
            log_error("get_env: AttachCurrentThread failed");
            return NULL;
        }
        log_info("get_env(%d): status=%d, env=%p", __LINE__, status, env);
    }

    if (env->ExceptionOccurred()) {
        log_error("%d: some exception happened!", __LINE__);
        env->ExceptionDescribe();
        env->ExceptionClear();
    }

    log_info("get_env: get env=%p ok, status=%d", env, status);
    return env;
}

static void fiber_thread_run(fiber_waiter* waiter) {
    waiter->start(1024000);