52828c0e9c
* Add posix_memalign().
* Move calloc() from calloc.c to malloc.c. Add a calloc() implementation in
rtld-elf in order to make the loader happy (even though calloc() isn't
used in rtld-elf).
* Add _malloc_prefork() and _malloc_postfork(), and use them instead of
directly manipulating __malloc_lock.
Approved by: phk, markm (mentor)
145 lines
4.1 KiB
C
145 lines
4.1 KiB
C
/*
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* Copyright (c) 1998 John Birrell <jb@cimlogic.com.au>.
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* All rights reserved.
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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 above 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 software developed by John Birrell.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``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 REGENTS 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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* $FreeBSD$
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*
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* Private definitions for libc, libc_r and libpthread.
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*
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*/
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#ifndef _LIBC_PRIVATE_H_
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#define _LIBC_PRIVATE_H_
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/*
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* This global flag is non-zero when a process has created one
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* or more threads. It is used to avoid calling locking functions
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* when they are not required.
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*/
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extern int __isthreaded;
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/*
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* File lock contention is difficult to diagnose without knowing
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* where locks were set. Allow a debug library to be built which
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* records the source file and line number of each lock call.
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*/
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#ifdef _FLOCK_DEBUG
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#define _FLOCKFILE(x) _flockfile_debug(x, __FILE__, __LINE__)
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#else
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#define _FLOCKFILE(x) _flockfile(x)
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#endif
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/*
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* Macros for locking and unlocking FILEs. These test if the
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* process is threaded to avoid locking when not required.
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*/
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#define FLOCKFILE(fp) if (__isthreaded) _FLOCKFILE(fp)
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#define FUNLOCKFILE(fp) if (__isthreaded) _funlockfile(fp)
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/*
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* Indexes into the pthread jump table.
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*
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* Warning! If you change this type, you must also change the threads
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* libraries that reference it (libc_r, libpthread).
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*/
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typedef enum {
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PJT_COND_BROADCAST,
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PJT_COND_DESTROY,
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PJT_COND_INIT,
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PJT_COND_SIGNAL,
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PJT_COND_WAIT,
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PJT_GETSPECIFIC,
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PJT_KEY_CREATE,
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PJT_KEY_DELETE,
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PJT_MAIN_NP,
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PJT_MUTEX_DESTROY,
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PJT_MUTEX_INIT,
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PJT_MUTEX_LOCK,
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PJT_MUTEX_TRYLOCK,
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PJT_MUTEX_UNLOCK,
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PJT_MUTEXATTR_DESTROY,
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PJT_MUTEXATTR_INIT,
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PJT_MUTEXATTR_SETTYPE,
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PJT_ONCE,
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PJT_RWLOCK_DESTROY,
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PJT_RWLOCK_INIT,
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PJT_RWLOCK_RDLOCK,
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PJT_RWLOCK_TRYRDLOCK,
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PJT_RWLOCK_TRYWRLOCK,
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PJT_RWLOCK_UNLOCK,
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PJT_RWLOCK_WRLOCK,
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PJT_SELF,
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PJT_SETSPECIFIC,
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PJT_SIGMASK,
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PJT_MAX
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} pjt_index_t;
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typedef int (*pthread_func_t)(void);
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typedef pthread_func_t pthread_func_entry_t[2];
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extern pthread_func_entry_t __thr_jtable[];
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/*
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* yplib internal interfaces
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*/
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#ifdef YP
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int _yp_check(char **);
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#endif
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/*
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* Initialise TLS for static programs
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*/
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void _init_tls(void);
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/*
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* Set the TLS thread pointer
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*/
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void _set_tp(void *tp);
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/*
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* This is a pointer in the C run-time startup code. It is used
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* by getprogname() and setprogname().
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*/
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extern const char *__progname;
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/*
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* These functions are used by the threading libraries in order to protect
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* malloc across fork().
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*/
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void _malloc_prefork(void);
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void _malloc_postfork(void);
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/*
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* Function to clean up streams, called from abort() and exit().
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*/
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extern void (*__cleanup)(void);
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#endif /* _LIBC_PRIVATE_H_ */
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