/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.] */
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#ifndef OPENSSL_HEADER_THREAD_H
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#define OPENSSL_HEADER_THREAD_H
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#include <sys/types.h>
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#include <openssl/base.h>
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#if defined(__cplusplus)
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extern "C" {
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#endif
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#if defined(OPENSSL_NO_THREADS)
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typedef struct crypto_mutex_st {
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char padding; // Empty structs have different sizes in C and C++.
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} CRYPTO_MUTEX;
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#elif defined(OPENSSL_WINDOWS)
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// CRYPTO_MUTEX can appear in public header files so we really don't want to
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// pull in windows.h. It's statically asserted that this structure is large
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// enough to contain a Windows SRWLOCK by thread_win.c.
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typedef union crypto_mutex_st {
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void *handle;
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} CRYPTO_MUTEX;
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#elif defined(__MACH__) && defined(__APPLE__)
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typedef pthread_rwlock_t CRYPTO_MUTEX;
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#else
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// It is reasonable to include pthread.h on non-Windows systems, however the
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// |pthread_rwlock_t| that we need is hidden under feature flags, and we can't
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// ensure that we'll be able to get it. It's statically asserted that this
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// structure is large enough to contain a |pthread_rwlock_t| by
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// thread_pthread.c.
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typedef union crypto_mutex_st {
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double alignment;
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uint8_t padding[3*sizeof(int) + 5*sizeof(unsigned) + 16 + 8];
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} CRYPTO_MUTEX;
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#endif
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// CRYPTO_refcount_t is the type of a reference count.
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//
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// Since some platforms use C11 atomics to access this, it should have the
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// _Atomic qualifier. However, this header is included by C++ programs as well
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// as C code that might not set -std=c11. So, in practice, it's not possible to
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// do that. Instead we statically assert that the size and native alignment of
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// a plain uint32_t and an _Atomic uint32_t are equal in refcount_c11.c.
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typedef uint32_t CRYPTO_refcount_t;
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// Deprecated functions.
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//
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// Historically, OpenSSL required callers to provide locking callbacks.
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// BoringSSL is thread-safe by default, but some old code calls these functions
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// and so no-op implementations are provided.
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// These defines do nothing but are provided to make old code easier to
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// compile.
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#define CRYPTO_LOCK 1
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#define CRYPTO_UNLOCK 2
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#define CRYPTO_READ 4
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#define CRYPTO_WRITE 8
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// CRYPTO_num_locks returns one. (This is non-zero that callers who allocate
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// sizeof(lock) times this value don't get zero and then fail because malloc(0)
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// returned NULL.)
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OPENSSL_EXPORT int CRYPTO_num_locks(void);
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// CRYPTO_set_locking_callback does nothing.
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OPENSSL_EXPORT void CRYPTO_set_locking_callback(
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void (*func)(int mode, int lock_num, const char *file, int line));
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// CRYPTO_set_add_lock_callback does nothing.
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OPENSSL_EXPORT void CRYPTO_set_add_lock_callback(int (*func)(
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int *num, int amount, int lock_num, const char *file, int line));
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// CRYPTO_get_locking_callback returns NULL.
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OPENSSL_EXPORT void (*CRYPTO_get_locking_callback(void))(int mode, int lock_num,
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const char *file,
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int line);
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// CRYPTO_get_lock_name returns a fixed, dummy string.
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OPENSSL_EXPORT const char *CRYPTO_get_lock_name(int lock_num);
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// CRYPTO_THREADID_set_callback returns one.
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OPENSSL_EXPORT int CRYPTO_THREADID_set_callback(
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void (*threadid_func)(CRYPTO_THREADID *threadid));
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// CRYPTO_THREADID_set_numeric does nothing.
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OPENSSL_EXPORT void CRYPTO_THREADID_set_numeric(CRYPTO_THREADID *id,
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unsigned long val);
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// CRYPTO_THREADID_set_pointer does nothing.
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OPENSSL_EXPORT void CRYPTO_THREADID_set_pointer(CRYPTO_THREADID *id, void *ptr);
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// CRYPTO_THREADID_current does nothing.
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OPENSSL_EXPORT void CRYPTO_THREADID_current(CRYPTO_THREADID *id);
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// CRYPTO_set_id_callback does nothing.
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OPENSSL_EXPORT void CRYPTO_set_id_callback(unsigned long (*func)(void));
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typedef struct {
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int references;
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struct CRYPTO_dynlock_value *data;
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} CRYPTO_dynlock;
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// CRYPTO_set_dynlock_create_callback does nothing.
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OPENSSL_EXPORT void CRYPTO_set_dynlock_create_callback(
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struct CRYPTO_dynlock_value *(*dyn_create_function)(const char *file,
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int line));
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// CRYPTO_set_dynlock_lock_callback does nothing.
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OPENSSL_EXPORT void CRYPTO_set_dynlock_lock_callback(void (*dyn_lock_function)(
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int mode, struct CRYPTO_dynlock_value *l, const char *file, int line));
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// CRYPTO_set_dynlock_destroy_callback does nothing.
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OPENSSL_EXPORT void CRYPTO_set_dynlock_destroy_callback(
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void (*dyn_destroy_function)(struct CRYPTO_dynlock_value *l,
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const char *file, int line));
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// CRYPTO_get_dynlock_create_callback returns NULL.
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OPENSSL_EXPORT struct CRYPTO_dynlock_value *(
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*CRYPTO_get_dynlock_create_callback(void))(const char *file, int line);
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// CRYPTO_get_dynlock_lock_callback returns NULL.
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OPENSSL_EXPORT void (*CRYPTO_get_dynlock_lock_callback(void))(
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int mode, struct CRYPTO_dynlock_value *l, const char *file, int line);
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// CRYPTO_get_dynlock_destroy_callback returns NULL.
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OPENSSL_EXPORT void (*CRYPTO_get_dynlock_destroy_callback(void))(
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struct CRYPTO_dynlock_value *l, const char *file, int line);
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#if defined(__cplusplus)
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} // extern C
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#endif
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#endif // OPENSSL_HEADER_THREAD_H
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