/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the copyright * notice, this list of conditions and the following disclaimer. * 2. 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * "This product includes cryptographic software written by * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 AUTHOR 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. * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence * [including the GNU Public Licence.] */ #ifndef OPENSSL_HEADER_THREAD_H #define OPENSSL_HEADER_THREAD_H #include #include #if defined(__cplusplus) extern "C" { #endif typedef struct { union { int __i[8]; volatile int __vi[8]; void* __p[8]; } __u; } pthread_rwlock_t; #if !defined(OPENSSL_THREADS) typedef struct crypto_mutex_st { char padding; // Empty structs have different sizes in C and C++. } CRYPTO_MUTEX; #elif defined(OPENSSL_WINDOWS) // CRYPTO_MUTEX can appear in public header files so we really don't want to // pull in windows.h. It's statically asserted that this structure is large // enough to contain a Windows SRWLOCK by thread_win.c. typedef union crypto_mutex_st { void* handle; } CRYPTO_MUTEX; #elif !defined(__GLIBC__) typedef pthread_rwlock_t CRYPTO_MUTEX; #else // On glibc, |pthread_rwlock_t| is hidden under feature flags, and we can't // ensure that we'll be able to get it from a public header. It's statically // asserted that this structure is large enough to contain a |pthread_rwlock_t| // by thread_pthread.c. typedef union crypto_mutex_st { double alignment; uint8_t padding[3 * sizeof(int) + 5 * sizeof(unsigned) + 16 + 8]; } CRYPTO_MUTEX; #endif // CRYPTO_refcount_t is the type of a reference count. // // Since some platforms use C11 atomics to access this, it should have the // _Atomic qualifier. However, this header is included by C++ programs as well // as C code that might not set -std=c11. So, in practice, it's not possible to // do that. Instead we statically assert that the size and native alignment of // a plain uint32_t and an _Atomic uint32_t are equal in refcount_c11.c. typedef uint32_t CRYPTO_refcount_t; // Deprecated functions. // // Historically, OpenSSL required callers to provide locking callbacks. // BoringSSL is thread-safe by default, but some old code calls these functions // and so no-op implementations are provided. // These defines do nothing but are provided to make old code easier to // compile. #define CRYPTO_LOCK 1 #define CRYPTO_UNLOCK 2 #define CRYPTO_READ 4 #define CRYPTO_WRITE 8 // CRYPTO_num_locks returns one. (This is non-zero that callers who allocate // sizeof(lock) times this value don't get zero and then fail because malloc(0) // returned NULL.) OPENSSL_EXPORT int CRYPTO_num_locks(void); // CRYPTO_set_locking_callback does nothing. OPENSSL_EXPORT void CRYPTO_set_locking_callback( void (*func)(int mode, int lock_num, const char* file, int line)); // CRYPTO_set_add_lock_callback does nothing. OPENSSL_EXPORT void CRYPTO_set_add_lock_callback(int ( *func)(int* num, int amount, int lock_num, const char* file, int line)); // CRYPTO_get_locking_callback returns NULL. OPENSSL_EXPORT void (*CRYPTO_get_locking_callback(void))(int mode, int lock_num, const char* file, int line); // CRYPTO_get_lock_name returns a fixed, dummy string. OPENSSL_EXPORT const char* CRYPTO_get_lock_name(int lock_num); // CRYPTO_THREADID_set_callback returns one. OPENSSL_EXPORT int CRYPTO_THREADID_set_callback( void (*threadid_func)(CRYPTO_THREADID* threadid)); // CRYPTO_THREADID_set_numeric does nothing. OPENSSL_EXPORT void CRYPTO_THREADID_set_numeric(CRYPTO_THREADID* id, unsigned long val); // CRYPTO_THREADID_set_pointer does nothing. OPENSSL_EXPORT void CRYPTO_THREADID_set_pointer(CRYPTO_THREADID* id, void* ptr); // CRYPTO_THREADID_current does nothing. OPENSSL_EXPORT void CRYPTO_THREADID_current(CRYPTO_THREADID* id); // CRYPTO_set_id_callback does nothing. OPENSSL_EXPORT void CRYPTO_set_id_callback(unsigned long (*func)(void)); typedef struct { int references; struct CRYPTO_dynlock_value* data; } CRYPTO_dynlock; // CRYPTO_set_dynlock_create_callback does nothing. OPENSSL_EXPORT void CRYPTO_set_dynlock_create_callback( struct CRYPTO_dynlock_value* (*dyn_create_function)(const char* file, int line)); // CRYPTO_set_dynlock_lock_callback does nothing. OPENSSL_EXPORT void CRYPTO_set_dynlock_lock_callback( void (*dyn_lock_function)(int mode, struct CRYPTO_dynlock_value* l, const char* file, int line)); // CRYPTO_set_dynlock_destroy_callback does nothing. OPENSSL_EXPORT void CRYPTO_set_dynlock_destroy_callback( void (*dyn_destroy_function)(struct CRYPTO_dynlock_value* l, const char* file, int line)); // CRYPTO_get_dynlock_create_callback returns NULL. OPENSSL_EXPORT struct CRYPTO_dynlock_value* ( *CRYPTO_get_dynlock_create_callback(void))(const char* file, int line); // CRYPTO_get_dynlock_lock_callback returns NULL. OPENSSL_EXPORT void (*CRYPTO_get_dynlock_lock_callback(void))( int mode, struct CRYPTO_dynlock_value* l, const char* file, int line); // CRYPTO_get_dynlock_destroy_callback returns NULL. OPENSSL_EXPORT void (*CRYPTO_get_dynlock_destroy_callback( void))(struct CRYPTO_dynlock_value* l, const char* file, int line); #if defined(__cplusplus) } // extern C #endif #endif // OPENSSL_HEADER_THREAD_H