2021-09-28 04:42:11 +08:00
|
|
|
/*
|
|
|
|
* Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved.
|
|
|
|
*
|
|
|
|
* Licensed under the Apache License 2.0 (the "License"). You may not use
|
|
|
|
* this file except in compliance with the License. You can obtain a copy
|
|
|
|
* in the file LICENSE in the source distribution or at
|
|
|
|
* https://www.openssl.org/source/license.html
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <openssl/configuration.h>
|
|
|
|
#include <internal/thread_arch.h>
|
|
|
|
|
|
|
|
#if defined(OPENSSL_THREADS)
|
|
|
|
|
|
|
|
CRYPTO_THREAD *ossl_crypto_thread_native_start(CRYPTO_THREAD_ROUTINE routine,
|
|
|
|
void *data, int joinable)
|
|
|
|
{
|
|
|
|
CRYPTO_THREAD *handle;
|
|
|
|
|
|
|
|
if (routine == NULL)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
handle = OPENSSL_zalloc(sizeof(*handle));
|
|
|
|
if (handle == NULL)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
if ((handle->lock = ossl_crypto_mutex_new()) == NULL)
|
|
|
|
goto fail;
|
|
|
|
if ((handle->statelock = ossl_crypto_mutex_new()) == NULL)
|
|
|
|
goto fail;
|
|
|
|
if ((handle->condvar = ossl_crypto_condvar_new()) == NULL)
|
|
|
|
goto fail;
|
|
|
|
|
|
|
|
handle->data = data;
|
|
|
|
handle->routine = routine;
|
|
|
|
handle->joinable = joinable;
|
|
|
|
|
|
|
|
if (ossl_crypto_thread_native_spawn(handle) == 1)
|
|
|
|
return handle;
|
|
|
|
|
|
|
|
fail:
|
|
|
|
ossl_crypto_condvar_free(&handle->condvar);
|
|
|
|
ossl_crypto_mutex_free(&handle->statelock);
|
|
|
|
ossl_crypto_mutex_free(&handle->lock);
|
|
|
|
OPENSSL_free(handle);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2022-10-18 20:41:21 +08:00
|
|
|
int ossl_crypto_thread_native_join(CRYPTO_THREAD *thread, CRYPTO_THREAD_RETVAL *retval)
|
|
|
|
{
|
|
|
|
uint64_t req_state_mask;
|
|
|
|
|
|
|
|
if (thread == NULL)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
ossl_crypto_mutex_lock(thread->statelock);
|
2022-10-22 01:49:21 +08:00
|
|
|
req_state_mask = CRYPTO_THREAD_FINISHED | CRYPTO_THREAD_JOINED;
|
2022-10-18 20:41:21 +08:00
|
|
|
while (!CRYPTO_THREAD_GET_STATE(thread, req_state_mask))
|
|
|
|
ossl_crypto_condvar_wait(thread->condvar, thread->statelock);
|
|
|
|
|
|
|
|
if (CRYPTO_THREAD_GET_STATE(thread, CRYPTO_THREAD_JOINED))
|
|
|
|
goto pass;
|
|
|
|
|
|
|
|
/* Await concurrent join completion, if any. */
|
|
|
|
while (CRYPTO_THREAD_GET_STATE(thread, CRYPTO_THREAD_JOIN_AWAIT)) {
|
|
|
|
if (!CRYPTO_THREAD_GET_STATE(thread, CRYPTO_THREAD_JOINED))
|
|
|
|
ossl_crypto_condvar_wait(thread->condvar, thread->statelock);
|
|
|
|
if (CRYPTO_THREAD_GET_STATE(thread, CRYPTO_THREAD_JOINED))
|
|
|
|
goto pass;
|
|
|
|
}
|
|
|
|
CRYPTO_THREAD_SET_STATE(thread, CRYPTO_THREAD_JOIN_AWAIT);
|
|
|
|
ossl_crypto_mutex_unlock(thread->statelock);
|
|
|
|
|
|
|
|
if (ossl_crypto_thread_native_perform_join(thread, retval) == 0)
|
|
|
|
goto fail;
|
|
|
|
|
|
|
|
ossl_crypto_mutex_lock(thread->statelock);
|
|
|
|
pass:
|
|
|
|
CRYPTO_THREAD_UNSET_ERROR(thread, CRYPTO_THREAD_JOINED);
|
|
|
|
CRYPTO_THREAD_SET_STATE(thread, CRYPTO_THREAD_JOINED);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Broadcast join completion. It is important to broadcast even if
|
|
|
|
* we haven't performed an actual join. Multiple threads could be
|
|
|
|
* awaiting the CRYPTO_THREAD_JOIN_AWAIT -> CRYPTO_THREAD_JOINED
|
|
|
|
* transition, but broadcast on actual join would wake only one.
|
|
|
|
* Broadcasing here will always wake one.
|
|
|
|
*/
|
|
|
|
ossl_crypto_condvar_broadcast(thread->condvar);
|
|
|
|
ossl_crypto_mutex_unlock(thread->statelock);
|
|
|
|
|
|
|
|
if (retval != NULL)
|
|
|
|
*retval = thread->retval;
|
|
|
|
return 1;
|
|
|
|
|
|
|
|
fail:
|
|
|
|
ossl_crypto_mutex_lock(thread->statelock);
|
|
|
|
CRYPTO_THREAD_SET_ERROR(thread, CRYPTO_THREAD_JOINED);
|
|
|
|
|
|
|
|
/* Have another thread that's awaiting join retry to avoid that
|
|
|
|
* thread deadlock. */
|
|
|
|
CRYPTO_THREAD_UNSET_STATE(thread, CRYPTO_THREAD_JOIN_AWAIT);
|
|
|
|
ossl_crypto_condvar_broadcast(thread->condvar);
|
|
|
|
|
|
|
|
ossl_crypto_mutex_unlock(thread->statelock);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2021-09-28 04:42:11 +08:00
|
|
|
int ossl_crypto_thread_native_clean(CRYPTO_THREAD *handle)
|
|
|
|
{
|
|
|
|
uint64_t req_state_mask;
|
|
|
|
|
|
|
|
if (handle == NULL)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
req_state_mask = 0;
|
|
|
|
req_state_mask |= CRYPTO_THREAD_FINISHED;
|
|
|
|
req_state_mask |= CRYPTO_THREAD_JOINED;
|
|
|
|
|
|
|
|
ossl_crypto_mutex_lock(handle->statelock);
|
|
|
|
if (CRYPTO_THREAD_GET_STATE(handle, req_state_mask) == 0) {
|
|
|
|
ossl_crypto_mutex_unlock(handle->statelock);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
ossl_crypto_mutex_unlock(handle->statelock);
|
|
|
|
|
|
|
|
ossl_crypto_mutex_free(&handle->lock);
|
|
|
|
ossl_crypto_mutex_free(&handle->statelock);
|
|
|
|
ossl_crypto_condvar_free(&handle->condvar);
|
|
|
|
|
|
|
|
OPENSSL_free(handle->handle);
|
|
|
|
OPENSSL_free(handle);
|
|
|
|
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
#else
|
|
|
|
|
|
|
|
CRYPTO_THREAD *ossl_crypto_thread_native_start(CRYPTO_THREAD_ROUTINE routine,
|
|
|
|
void *data, int joinable)
|
|
|
|
{
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
int ossl_crypto_thread_native_clean(CRYPTO_THREAD *handle)
|
|
|
|
{
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif
|