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freebsd/lib/libc_r/uthread/pthread_private.h
Jeffrey Hsu 509de77c10 Moved enum pthread_mutextype to pthread.h. 
Add pthread_mutexattr_default definition.
1996-11-11 09:07:05 +00:00

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/*
* Copyright (c) 1995 John Birrell <jb@cimlogic.com.au>.
* All rights reserved.
*
* 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 above 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 software developed by John Birrell.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``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 REGENTS 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.
*
* Private thread definitions for the uthread kernel.
*
*/
#ifndef _PTHREAD_PRIVATE_H
#define _PTHREAD_PRIVATE_H
/*
* Evaluate the storage class specifier.
*/
#ifdef GLOBAL_PTHREAD_PRIVATE
#define SCLASS
#else
#define SCLASS extern
#endif
/*
* Include files.
*/
#include <setjmp.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/time.h>
/*
* Kernel fatal error handler macro.
*/
#define PANIC(string) _thread_exit(__FILE__,__LINE__,string)
/*
* Queue definitions.
*/
struct pthread_queue {
struct pthread *q_next;
struct pthread *q_last;
void *q_data;
};
/*
* Static queue initialization values.
*/
#define PTHREAD_QUEUE_INITIALIZER { NULL, NULL, NULL }
/*
* Mutex definitions.
*/
union pthread_mutex_data {
void *m_ptr;
int m_count;
};
struct pthread_mutex {
enum pthread_mutextype m_type;
struct pthread_queue m_queue;
struct pthread *m_owner;
union pthread_mutex_data m_data;
long m_flags;
};
/*
* Flags for mutexes.
*/
#define MUTEX_FLAGS_PRIVATE 0x01
#define MUTEX_FLAGS_INITED 0x02
#define MUTEX_FLAGS_BUSY 0x04
/*
* Static mutex initialization values.
*/
#define PTHREAD_MUTEX_INITIALIZER \
{ MUTEX_TYPE_FAST, PTHREAD_QUEUE_INITIALIZER, \
NULL, { NULL }, MUTEX_FLAGS_INITED }
struct pthread_mutex_attr {
enum pthread_mutextype m_type;
long m_flags;
};
/*
* Condition variable definitions.
*/
enum pthread_cond_type {
COND_TYPE_FAST,
COND_TYPE_MAX
};
struct pthread_cond {
enum pthread_cond_type c_type;
struct pthread_queue c_queue;
void *c_data;
long c_flags;
};
struct pthread_cond_attr {
enum pthread_cond_type c_type;
long c_flags;
};
/*
* Flags for condition variables.
*/
#define COND_FLAGS_PRIVATE 0x01
#define COND_FLAGS_INITED 0x02
#define COND_FLAGS_BUSY 0x04
/*
* Static cond initialization values.
*/
#define PTHREAD_COND_INITIALIZER \
{ COND_TYPE_FAST, PTHREAD_QUEUE_INITIALIZER, NULL, COND_FLAGS_INITED }
/*
* Cleanup definitions.
*/
struct pthread_cleanup {
struct pthread_cleanup *next;
void (*routine) ();
void *routine_arg;
};
/*
* Scheduling definitions.
*/
enum schedparam_policy {
SCHED_RR,
SCHED_IO,
SCHED_FIFO,
SCHED_OTHER
};
struct pthread_attr {
enum schedparam_policy schedparam_policy;
int prio;
int suspend;
int flags;
void *arg_attr;
void (*cleanup_attr) ();
void *stackaddr_attr;
size_t stacksize_attr;
};
struct sched_param {
int prio;
void *no_data;
};
/*
* Thread creation state attributes.
*/
#define PTHREAD_CREATE_RUNNING 0
#define PTHREAD_CREATE_SUSPENDED 1
/*
* Miscellaneous definitions.
*/
#define PTHREAD_STACK_DEFAULT 65536
#define PTHREAD_DEFAULT_PRIORITY 64
#define PTHREAD_MAX_PRIORITY 126
#define PTHREAD_MIN_PRIORITY 0
#define _POSIX_THREAD_ATTR_STACKSIZE
/*
* Clock resolution in nanoseconds.
*/
#define CLOCK_RES_NSEC 10000000
/*
* Number of microseconds between incremental priority updates for
* threads that are ready to run, but denied being run.
*/
#define INC_PRIO_USEC 500000
/*
* Time slice period in microseconds.
*/
#define TIMESLICE_USEC 100000
/*
* Flags.
*/
#define PTHREAD_DETACHED 0x1
#define PTHREAD_SCOPE_SYSTEM 0x2
#define PTHREAD_INHERIT_SCHED 0x4
#define PTHREAD_NOFLOAT 0x8
#define PTHREAD_CREATE_DETACHED PTHREAD_DETACHED
#define PTHREAD_CREATE_JOINABLE 0
#define PTHREAD_SCOPE_PROCESS 0
#define PTHREAD_EXPLICIT_SCHED 0
struct pthread_key {
pthread_mutex_t mutex;
long count;
void (*destructor) ();
};
/*
* Thread states.
*/
enum pthread_state {
PS_RUNNING,
PS_SIGTHREAD,
PS_MUTEX_WAIT,
PS_COND_WAIT,
PS_FDLR_WAIT,
PS_FDLW_WAIT,
PS_FDR_WAIT,
PS_FDW_WAIT,
PS_SELECT_WAIT,
PS_SLEEP_WAIT,
PS_WAIT_WAIT,
PS_SIGWAIT,
PS_JOIN,
PS_SUSPENDED,
PS_DEAD,
PS_STATE_MAX
};
/*
* File descriptor locking definitions.
*/
#define FD_READ 0x1
#define FD_WRITE 0x2
#define FD_RDWR (FD_READ | FD_WRITE)
/*
* File descriptor table structure.
*/
struct fd_table_entry {
struct pthread_queue r_queue; /* Read queue. */
struct pthread_queue w_queue; /* Write queue. */
struct pthread *r_owner; /* Ptr to thread owning read lock. */
struct pthread *w_owner; /* Ptr to thread owning write lock. */
char *r_fname; /* Ptr to read lock source file name */
int r_lineno; /* Read lock source line number. */
char *w_fname; /* Ptr to write lock source file name */
int w_lineno; /* Write lock source line number. */
int r_lockcount; /* Count for FILE read locks. */
int w_lockcount; /* Count for FILE write locks. */
int flags; /* Flags used in open. */
};
struct pthread_select_data {
int nfds;
fd_set readfds;
fd_set writefds;
fd_set exceptfds;
};
union pthread_wait_data {
pthread_mutex_t *mutex;
pthread_cond_t *cond;
const sigset_t *sigwait; /* Waiting on a signal in sigwait */
struct {
short fd; /* Used when thread waiting on fd */
short branch; /* Line number, for debugging. */
char *fname; /* Source file name for debugging.*/
} fd;
struct pthread_select_data * select_data;
};
/*
* Thread structure.
*/
struct pthread {
/*
* Pointer to the next thread in the thread linked list.
*/
struct pthread *nxt;
/*
* Thread start routine, argument, stack pointer and thread
* attributes.
*/
void *(*start_routine)(void *);
void *arg;
void *stack;
struct pthread_attr attr;
/*
* Thread-specific signal handler interface:
*
* Array of signal actions for this thread.
*/
struct sigaction act[NSIG];
#if (defined(__FreeBSD__) || defined(__NetBSD__)) && defined(__i386__)
/*
* Saved floating point registers on systems where they are not
* saved in the signal context.
*/
char saved_fp[108];
#endif
/*
* Saved signal context used in call to sigreturn by
* _thread_kern_sched if sig_saved is TRUE.
*/
struct sigcontext saved_sigcontext;
/*
* Saved jump buffer used in call to longjmp by _thread_kern_sched
* if sig_saved is FALSE.
*/
jmp_buf saved_jmp_buf;
/*
* TRUE if the last state saved was a signal context. FALSE if the
* last state saved was a jump buffer.
*/
int sig_saved;
/*
* Current signal mask and array of pending signals.
*/
sigset_t sigmask;
int sigpend[NSIG];
/*
* Pointer to the parent thread for which the current thread is
* a signal handler thread, otherwise NULL if the current thread
* is not a signal handler thread.
*/
struct pthread *parent_thread;
/* Thread state: */
enum pthread_state state;
/* Time that this thread was last made active. */
struct timeval last_active;
/* Time that this thread was last made inactive. */
struct timeval last_inactive;
/*
* Number of microseconds accumulated by this thread when
* time slicing is active.
*/
long slice_usec;
/*
* Incremental priority accumulated by thread while it is ready to
* run but is denied being run.
*/
int inc_prio;
/*
* Time to wake up thread. This is used for sleeping threads and
* for any operation which may time out (such as select).
*/
struct timespec wakeup_time;
/* TRUE if operation has timed out. */
int timeout;
/*
* Error variable used instead of errno. The function __error()
* returns a pointer to this.
*/
int error;
/* Join queue for waiting threads: */
struct pthread_queue join_queue;
/*
* The current thread can belong to only one queue at a time.
*
* Pointer to queue (if any) on which the current thread is waiting.
*/
struct pthread_queue *queue;
/* Pointer to next element in queue. */
struct pthread *qnxt;
/* Wait data. */
union pthread_wait_data data;
/* Miscellaneous data. */
char flags;
char pthread_priority;
void *ret;
const void **specific_data;
int specific_data_count;
/* Cleanup handlers Link List */
struct pthread_cleanup *cleanup;
};
/*
* Global variables for the uthread kernel.
*/
/* Kernel thread structure used when there are no running threads: */
SCLASS struct pthread _thread_kern_thread;
/* Ptr to the thread structure for the running thread: */
SCLASS struct pthread *_thread_run
#ifdef GLOBAL_PTHREAD_PRIVATE
= &_thread_kern_thread;
#else
;
#endif
/*
* Ptr to the thread running in single-threaded mode or NULL if
* running multi-threaded (default POSIX behaviour).
*/
SCLASS struct pthread *_thread_single
#ifdef GLOBAL_PTHREAD_PRIVATE
= NULL;
#else
;
#endif
/* Ptr to the first thread in the thread linked list: */
SCLASS struct pthread *_thread_link_list
#ifdef GLOBAL_PTHREAD_PRIVATE
= NULL;
#else
;
#endif
/*
* Array of kernel pipe file descriptors that are used to ensure that
* no signals are missed in calls to _thread_sys_select.
*/
SCLASS int _thread_kern_pipe[2]
#ifdef GLOBAL_PTHREAD_PRIVATE
= {
-1,
-1
};
#else
;
#endif
SCLASS int _thread_kern_in_select
#ifdef GLOBAL_PTHREAD_PRIVATE
= 0;
#else
;
#endif
/* Last time that an incremental priority update was performed: */
SCLASS struct timeval kern_inc_prio_time
#ifdef GLOBAL_PTHREAD_PRIVATE
= { 0, 0 };
#else
;
#endif
/* Dead threads: */
SCLASS struct pthread *_thread_dead
#ifdef GLOBAL_PTHREAD_PRIVATE
= NULL;
#else
;
#endif
/* Initial thread: */
SCLASS struct pthread *_thread_initial
#ifdef GLOBAL_PTHREAD_PRIVATE
= NULL;
#else
;
#endif
/* Default thread attributes: */
SCLASS struct pthread_attr pthread_attr_default
#ifdef GLOBAL_PTHREAD_PRIVATE
= { SCHED_RR, PTHREAD_DEFAULT_PRIORITY, PTHREAD_CREATE_RUNNING,
PTHREAD_CREATE_JOINABLE, NULL, NULL, NULL, PTHREAD_STACK_DEFAULT };
#else
;
#endif
/* Default thread attributes: */
SCLASS struct pthread_mutex_attr pthread_mutexattr_default
#ifdef GLOBAL_PTHREAD_PRIVATE
= { MUTEX_TYPE_FAST, 0 };
#else
;
#endif
/* File table information: */
SCLASS struct fd_table_entry **_thread_fd_table
#ifdef GLOBAL_PTHREAD_PRIVATE
= NULL;
#else
;
#endif
SCLASS const int dtablecount
#ifdef GLOBAL_PTHREAD_PRIVATE
= 4096/sizeof(struct fd_table_entry);
#else
;
#endif
SCLASS int _thread_dtablesize /* Descriptor table size. */
#ifdef GLOBAL_PTHREAD_PRIVATE
= 1024;
#else
;
#endif
/* Undefine the storage class specifier: */
#undef SCLASS
/*
* Function prototype definitions.
*/
__BEGIN_DECLS
char *__ttyname_basic(int);
char *__ttyname_r_basic(int, char *, size_t);
char *ttyname_r(int, char *, size_t);
int _thread_create(pthread_t *,const pthread_attr_t *,void *(*start_routine)(void *),void *,pthread_t);
int _thread_fd_lock(int, int, struct timespec *,char *fname,int lineno);
int nanosleep(struct timespec *, struct timespec *);
void _thread_exit(char *, int, char *);
void _thread_fd_unlock(int, int);
void *_thread_cleanup(pthread_t);
void _thread_cleanupspecific(void);
void _thread_dump_info(void);
void _thread_init(void);
void _thread_kern_sched(struct sigcontext *);
void _thread_kern_sched_state(enum pthread_state,char *fname,int lineno);
void _thread_kern_set_timeout(struct timespec *);
void _thread_kern_sig_block(int *);
void _thread_kern_sig_unblock(int);
void _thread_cleanup_pop(int);
void _thread_sig_handler(int, int, struct sigcontext *);
void _thread_start(void);
void _thread_start_sig_handler(void);
void _thread_seterrno(pthread_t,int);
void _thread_queue_init(struct pthread_queue *);
void _thread_queue_enq(struct pthread_queue *, struct pthread *);
int _thread_queue_remove(struct pthread_queue *, struct pthread *);
int _thread_fd_table_init(int fd);
struct pthread *_thread_queue_get(struct pthread_queue *);
struct pthread *_thread_queue_deq(struct pthread_queue *);
/* #include <signal.h> */
int _thread_sys_sigaction(int, const struct sigaction *, struct sigaction *);
int _thread_sys_sigpending(sigset_t *);
int _thread_sys_sigprocmask(int, const sigset_t *, sigset_t *);
int _thread_sys_sigsuspend(const sigset_t *);
int _thread_sys_sigblock(int);
int _thread_sys_siginterrupt(int, int);
int _thread_sys_sigpause(int);
int _thread_sys_sigreturn(struct sigcontext *);
int _thread_sys_sigsetmask(int);
int _thread_sys_sigstack(const struct sigstack *, struct sigstack *);
int _thread_sys_sigvec(int, struct sigvec *, struct sigvec *);
void _thread_sys_psignal(unsigned int, const char *);
void (*_thread_sys_signal(int, void (*)(int)))(int);
/* #include <sys/stat.h> */
#ifdef _SYS_STAT_H_
int _thread_sys_fchmod(int, mode_t);
int _thread_sys_fstat(int, struct stat *);
int _thread_sys_fchflags(int, u_long);
#endif
/* #include <sys/mount.h> */
#ifdef _SYS_MOUNT_H_
int _thread_sys_fstatfs(int, struct statfs *);
#endif
int _thread_sys_pipe(int *);
/* #include <sys/socket.h> */
#ifdef _SYS_SOCKET_H_
int _thread_sys_accept(int, struct sockaddr *, int *);
int _thread_sys_bind(int, const struct sockaddr *, int);
int _thread_sys_connect(int, const struct sockaddr *, int);
int _thread_sys_getpeername(int, struct sockaddr *, int *);
int _thread_sys_getsockname(int, struct sockaddr *, int *);
int _thread_sys_getsockopt(int, int, int, void *, int *);
int _thread_sys_listen(int, int);
int _thread_sys_setsockopt(int, int, int, const void *, int);
int _thread_sys_shutdown(int, int);
int _thread_sys_socket(int, int, int);
int _thread_sys_socketpair(int, int, int, int *);
ssize_t _thread_sys_recv(int, void *, size_t, int);
ssize_t _thread_sys_recvfrom(int, void *, size_t, int, struct sockaddr *, int *);
ssize_t _thread_sys_recvmsg(int, struct msghdr *, int);
ssize_t _thread_sys_send(int, const void *, size_t, int);
ssize_t _thread_sys_sendmsg(int, const struct msghdr *, int);
ssize_t _thread_sys_sendto(int, const void *,size_t, int, const struct sockaddr *, int);
#endif
/* #include <stdio.h> */
#ifdef _STDIO_H_
void _thread_flockfile(FILE *fp,char *fname,int lineno);
void _thread_funlockfile(FILE *fp);
FILE *_thread_sys_fdopen(int, const char *);
FILE *_thread_sys_fopen(const char *, const char *);
FILE *_thread_sys_freopen(const char *, const char *, FILE *);
FILE *_thread_sys_popen(const char *, const char *);
FILE *_thread_sys_tmpfile(void);
char *_thread_sys_ctermid(char *);
char *_thread_sys_cuserid(char *);
char *_thread_sys_fgetln(FILE *, size_t *);
char *_thread_sys_fgets(char *, int, FILE *);
char *_thread_sys_gets(char *);
char *_thread_sys_tempnam(const char *, const char *);
char *_thread_sys_tmpnam(char *);
int _thread_sys_fclose(FILE *);
int _thread_sys_feof(FILE *);
int _thread_sys_ferror(FILE *);
int _thread_sys_fflush(FILE *);
int _thread_sys_fgetc(FILE *);
int _thread_sys_fgetpos(FILE *, fpos_t *);
int _thread_sys_fileno(FILE *);
int _thread_sys_fprintf(FILE *, const char *, ...);
int _thread_sys_fpurge(FILE *);
int _thread_sys_fputc(int, FILE *);
int _thread_sys_fputs(const char *, FILE *);
int _thread_sys_fscanf(FILE *, const char *, ...);
int _thread_sys_fseek(FILE *, long, int);
int _thread_sys_fsetpos(FILE *, const fpos_t *);
int _thread_sys_getc(FILE *);
int _thread_sys_getchar(void);
int _thread_sys_getw(FILE *);
int _thread_sys_pclose(FILE *);
int _thread_sys_printf(const char *, ...);
int _thread_sys_putc(int, FILE *);
int _thread_sys_putchar(int);
int _thread_sys_puts(const char *);
int _thread_sys_putw(int, FILE *);
int _thread_sys_remove(const char *);
int _thread_sys_rename (const char *, const char *);
int _thread_sys_scanf(const char *, ...);
int _thread_sys_setlinebuf(FILE *);
int _thread_sys_setvbuf(FILE *, char *, int, size_t);
int _thread_sys_snprintf(char *, size_t, const char *, ...);
int _thread_sys_sprintf(char *, const char *, ...);
int _thread_sys_sscanf(const char *, const char *, ...);
int _thread_sys_ungetc(int, FILE *);
int _thread_sys_vfprintf(FILE *, const char *, _BSD_VA_LIST_);
int _thread_sys_vprintf(const char *, _BSD_VA_LIST_);
int _thread_sys_vscanf(const char *, _BSD_VA_LIST_);
int _thread_sys_vsnprintf(char *, size_t, const char *, _BSD_VA_LIST_);
int _thread_sys_vsprintf(char *, const char *, _BSD_VA_LIST_);
int _thread_sys_vsscanf(const char *, const char *, _BSD_VA_LIST_);
long _thread_sys_ftell(FILE *);
size_t _thread_sys_fread(void *, size_t, size_t, FILE *);
size_t _thread_sys_fwrite(const void *, size_t, size_t, FILE *);
void _thread_sys_clearerr(FILE *);
void _thread_sys_perror(const char *);
void _thread_sys_rewind(FILE *);
void _thread_sys_setbuf(FILE *, char *);
void _thread_sys_setbuffer(FILE *, char *, int);
#endif
/* #include <unistd.h> */
#ifdef _UNISTD_H_
char *_thread_sys_ttyname(int);
int _thread_sys_close(int);
int _thread_sys_dup(int);
int _thread_sys_dup2(int, int);
int _thread_sys_exect(const char *, char * const *, char * const *);
int _thread_sys_execve(const char *, char * const *, char * const *);
int _thread_sys_fchdir(int);
int _thread_sys_fchown(int, uid_t, gid_t);
int _thread_sys_fsync(int);
int _thread_sys_ftruncate(int, off_t);
int _thread_sys_pause(void);
int _thread_sys_pipe(int *);
int _thread_sys_select(int, fd_set *, fd_set *, fd_set *, struct timeval *);
off_t _thread_sys_lseek(int, off_t, int);
pid_t _thread_sys_fork(void);
pid_t _thread_sys_tcgetpgrp(int);
ssize_t _thread_sys_read(int, void *, size_t);
ssize_t _thread_sys_write(int, const void *, size_t);
void _thread_sys__exit(int);
#endif
/* #include <fcntl.h> */
#ifdef _SYS_FCNTL_H_
int _thread_sys_creat(const char *, mode_t);
int _thread_sys_fcntl(int, int, ...);
int _thread_sys_flock(int, int);
int _thread_sys_open(const char *, int, ...);
#endif
/* #include <setjmp.h> */
#ifdef _SETJMP_H_
int __thread_sys_setjmp(jmp_buf);
int _thread_sys_setjmp(jmp_buf);
int _thread_sys_sigsetjmp(sigjmp_buf, int);
void __thread_sys_longjmp(jmp_buf, int);
void _thread_sys_longjmp(jmp_buf, int);
void _thread_sys_longjmperror(void);
void _thread_sys_siglongjmp(sigjmp_buf, int);
#endif
/* #include <sys/ioctl.h> */
#ifdef _SYS_IOCTL_H_
int _thread_sys_ioctl(int, unsigned long, ...);
#endif
/* #include <dirent.h> */
#ifdef _DIRENT_H_
DIR *___thread_sys_opendir2(const char *, int);
DIR *_thread_sys_opendir(const char *);
int _thread_sys_alphasort(const void *, const void *);
int _thread_sys_scandir(const char *, struct dirent ***,
int (*)(struct dirent *), int (*)(const void *, const void *));
int _thread_sys_closedir(DIR *);
int _thread_sys_getdirentries(int, char *, int, long *);
long _thread_sys_telldir(const DIR *);
struct dirent *_thread_sys_readdir(DIR *);
void _thread_sys_rewinddir(DIR *);
void _thread_sys_seekdir(DIR *, long);
#endif
/* #include <sys/uio.h> */
#ifdef _SYS_UIO_H_
ssize_t _thread_sys_readv(int, const struct iovec *, int);
ssize_t _thread_sys_writev(int, const struct iovec *, int);
#endif
/* #include <sys/wait.h> */
#ifdef WNOHANG
pid_t _thread_sys_wait(int *);
pid_t _thread_sys_waitpid(pid_t, int *, int);
pid_t _thread_sys_wait3(int *, int, struct rusage *);
pid_t _thread_sys_wait4(pid_t, int *, int, struct rusage *);
#endif
__END_DECLS
#endif /* !_PTHREAD_PRIVATE_H */
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