crypto/thread/api.c

   1 /*
   2  * Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <openssl/configuration.h>
  11 #include <openssl/thread.h>
  12 #include <internal/thread.h>
  13
  14 uint32_t OSSL_get_thread_support_flags(void)
  15 {
  16     int support = 0;
  17
  18 #if !defined(OPENSSL_NO_THREAD_POOL)
  19     support |= OSSL_THREAD_SUPPORT_FLAG_THREAD_POOL;
  20 #endif
  21 #if !defined(OPENSSL_NO_DEFAULT_THREAD_POOL)
  22     support |= OSSL_THREAD_SUPPORT_FLAG_DEFAULT_SPAWN;
  23 #endif
  24
  25     return support;
  26 }
  27
  28 #if defined(OPENSSL_NO_THREAD_POOL) || defined(OPENSSL_NO_DEFAULT_THREAD_POOL)
  29
  30 int OSSL_set_max_threads(OSSL_LIB_CTX *ctx, uint64_t max_threads)
  31 {
  32     return 0;
  33 }
  34
  35 uint64_t OSSL_get_max_threads(OSSL_LIB_CTX *ctx)
  36 {
  37     return 0;
  38 }
  39
  40 #else
  41
  42 uint64_t OSSL_get_max_threads(OSSL_LIB_CTX *ctx)
  43 {
  44     uint64_t ret = 0;
  45     OSSL_LIB_CTX_THREADS *tdata = OSSL_LIB_CTX_GET_THREADS(ctx);
  46
  47     if (tdata == NULL)
  48         goto fail;
  49
  50     ossl_crypto_mutex_lock(tdata->lock);
  51     ret = tdata->max_threads;
  52     ossl_crypto_mutex_unlock(tdata->lock);
  53
  54 fail:
  55     return ret;
  56 }
  57
  58 int OSSL_set_max_threads(OSSL_LIB_CTX *ctx, uint64_t max_threads)
  59 {
  60     OSSL_LIB_CTX_THREADS *tdata;
  61
  62     tdata = OSSL_LIB_CTX_GET_THREADS(ctx);
  63     if (tdata == NULL)
  64         return 0;
  65
  66     ossl_crypto_mutex_lock(tdata->lock);
  67     tdata->max_threads = max_threads;
  68     ossl_crypto_mutex_unlock(tdata->lock);
  69
  70     return 1;
  71 }
  72
  73 #endif