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- /*
- * Copyright (C) 2011-2017 Intel Corporation. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
- #include "sgx_defs.h"
- #include "enclave.h"
- #include "se_event.h"
- #include "internal/se_error_internal.h"
- /* wait on untrusted event */
- extern "C" int sgx_thread_wait_untrusted_event_ocall(const void *self)
- {
- if (self == NULL)
- return SGX_ERROR_INVALID_PARAMETER;
- se_handle_t hevent = CEnclavePool::instance()->get_event(self);
- if (hevent == NULL)
- return SE_ERROR_MUTEX_GET_EVENT;
- if (SE_MUTEX_SUCCESS != se_event_wait(hevent))
- return SE_ERROR_MUTEX_WAIT_EVENT;
- return SGX_SUCCESS;
- }
- /* set untrusted event */
- extern "C" int sgx_thread_set_untrusted_event_ocall(const void *waiter)
- {
- if (waiter == NULL)
- return SGX_ERROR_INVALID_PARAMETER;
- se_handle_t hevent = CEnclavePool::instance()->get_event(waiter);
- if (hevent == NULL)
- return SE_ERROR_MUTEX_GET_EVENT;
- if (SE_MUTEX_SUCCESS != se_event_wake(hevent))
- return SE_ERROR_MUTEX_WAKE_EVENT;
- return SGX_SUCCESS;
- }
- extern "C" int sgx_thread_set_multiple_untrusted_events_ocall(const void **waiters, size_t total)
- {
- if (waiters == NULL || *waiters == NULL)
- return SGX_ERROR_INVALID_PARAMETER;
- for (unsigned int i = 0; i < total; i++) {
- se_handle_t hevent = CEnclavePool::instance()->get_event(*waiters++);
- if (hevent == NULL)
- return SE_ERROR_MUTEX_GET_EVENT;
- if (SE_MUTEX_SUCCESS != se_event_wake(hevent))
- return SE_ERROR_MUTEX_WAKE_EVENT;
- }
- return SGX_SUCCESS;
- }
- extern "C" int sgx_thread_setwait_untrusted_events_ocall(const void *waiter, const void *self)
- {
- int ret = sgx_thread_set_untrusted_event_ocall(waiter);
- if (ret != SGX_SUCCESS) return ret;
- return sgx_thread_wait_untrusted_event_ocall(self);
- }
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