summaryrefslogtreecommitdiff
path: root/lib/libpthread/uthread/pthread_private.h
diff options
context:
space:
mode:
Diffstat (limited to 'lib/libpthread/uthread/pthread_private.h')
-rw-r--r--lib/libpthread/uthread/pthread_private.h725
1 files changed, 725 insertions, 0 deletions
diff --git a/lib/libpthread/uthread/pthread_private.h b/lib/libpthread/uthread/pthread_private.h
new file mode 100644
index 00000000000..ce7da3da5c4
--- /dev/null
+++ b/lib/libpthread/uthread/pthread_private.h
@@ -0,0 +1,725 @@
+/*
+ * Copyright (c) 1995-1998 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
+
+#include <paths.h>
+
+/*
+ * Include files.
+ */
+#include <setjmp.h>
+#include <signal.h>
+#include <sys/queue.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sched.h>
+#include <spinlock.h>
+#include "uthread_machdep.h"
+
+/*
+ * Kernel fatal error handler macro.
+ */
+#define PANIC(string) _thread_exit(__FILE__,__LINE__,string)
+
+/* Output debug messages like this: */
+#define stdout_debug(_x) _write(1,_x,strlen(_x));
+#define stderr_debug(_x) _write(2,_x,strlen(_x));
+
+/*
+ * State change macro:
+ */
+#define PTHREAD_NEW_STATE(thrd, newstate) { \
+ (thrd)->state = newstate; \
+ (thrd)->fname = __FILE__; \
+ (thrd)->lineno = __LINE__; \
+}
+
+/*
+ * 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;
+
+ /*
+ * Lock for accesses to this structure.
+ */
+ spinlock_t lock;
+};
+
+/*
+ * 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_STATIC_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;
+
+ /*
+ * Lock for accesses to this structure.
+ */
+ spinlock_t lock;
+};
+
+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_STATIC_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;
+};
+
+struct pthread_attr {
+ int schedparam_policy;
+ int prio;
+ int suspend;
+ int flags;
+ void *arg_attr;
+ void (*cleanup_attr) ();
+ void *stackaddr_attr;
+ size_t stacksize_attr;
+};
+
+/*
+ * 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
+
+struct pthread_key {
+ spinlock_t lock;
+ volatile int allocated;
+ volatile int 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_FILE_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 {
+ /*
+ * Lock for accesses to this file descriptor table
+ * entry. This is passed to _spinlock() to provide atomic
+ * access to this structure. It does *not* represent the
+ * state of the lock on the file descriptor.
+ */
+ spinlock_t lock;
+ 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 {
+ /*
+ * Magic value to help recognize a valid thread structure
+ * from an invalid one:
+ */
+#define PTHREAD_MAGIC ((u_int32_t) 0xd09ba115)
+ u_int32_t magic;
+ char *name;
+
+ /*
+ * Lock for accesses to this thread structure.
+ */
+ spinlock_t lock;
+
+ /*
+ * 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;
+
+ struct _machdep_struct _machdep;
+
+ /*
+ * 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 pending signals.
+ */
+ sigset_t sigmask;
+ sigset_t sigpend;
+
+ /* 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.
+ *
+ * XXX The queuing should be changed to use the TAILQ entry below.
+ * XXX For the time being, it's hybrid.
+ */
+ struct pthread_queue *queue;
+
+ /* Pointer to next element in queue. */
+ struct pthread *qnxt;
+
+ /* Queue entry for this thread: */
+ TAILQ_ENTRY(pthread) qe;
+
+ /* Wait data. */
+ union pthread_wait_data data;
+
+ /*
+ * Set to TRUE if a blocking operation was
+ * interrupted by a signal:
+ */
+ int interrupted;
+
+ /* Signal number when in state PS_SIGWAIT: */
+ int signo;
+
+ /* Miscellaneous data. */
+ char flags;
+#define PTHREAD_EXITING 0x0100
+ char pthread_priority;
+ void *ret;
+ const void **specific_data;
+ int specific_data_count;
+
+ /* Cleanup handlers Link List */
+ struct pthread_cleanup *cleanup;
+ char *fname; /* Ptr to source file name */
+ int lineno; /* Source line number. */
+};
+
+/*
+ * Global variables for the uthread kernel.
+ */
+
+/* Kernel thread structure used when there are no running threads: */
+extern struct pthread _thread_kern_thread;
+
+/* Ptr to the thread structure for the running thread: */
+extern struct pthread * volatile _thread_run;
+
+/*
+ * Ptr to the thread running in single-threaded mode or NULL if
+ * running multi-threaded (default POSIX behaviour).
+ */
+extern struct pthread * volatile _thread_single;
+
+/* Ptr to the first thread in the thread linked list: */
+extern struct pthread * volatile _thread_link_list;
+
+/*
+ * Array of kernel pipe file descriptors that are used to ensure that
+ * no signals are missed in calls to _select.
+ */
+extern int _thread_kern_pipe[2];
+extern int _thread_kern_in_select;
+extern int _thread_kern_in_sched;
+
+/* Last time that an incremental priority update was performed: */
+extern struct timeval kern_inc_prio_time;
+
+/* Dead threads: */
+extern struct pthread * volatile _thread_dead;
+
+/* Initial thread: */
+extern struct pthread *_thread_initial;
+
+/* Default thread attributes: */
+extern struct pthread_attr pthread_attr_default;
+
+/* Default mutex attributes: */
+extern struct pthread_mutex_attr pthread_mutexattr_default;
+
+/* Default condition variable attributes: */
+extern struct pthread_cond_attr pthread_condattr_default;
+
+/*
+ * Standard I/O file descriptors need special flag treatment since
+ * setting one to non-blocking does all on *BSD. Sigh. This array
+ * is used to store the initial flag settings.
+ */
+extern int _pthread_stdio_flags[3];
+
+/* File table information: */
+extern struct fd_table_entry **_thread_fd_table;
+extern int _thread_dtablesize;
+
+/*
+ * Array of signal actions for this process.
+ */
+extern struct sigaction _thread_sigact[NSIG];
+
+/*
+ * Where SIGINFO writes thread states when /dev/tty cannot be opened
+ */
+#define INFO_DUMP_FILE "/tmp/uthread.dump"
+
+#ifdef _LOCK_DEBUG
+#define _FD_LOCK(_fd,_type,_ts) _thread_fd_lock_debug(_fd, _type, \
+ _ts, __FILE__, __LINE__)
+#define _FD_UNLOCK(_fd,_type) _thread_fd_unlock_debug(_fd, _type, \
+ __FILE__, __LINE__)
+#else
+#define _FD_LOCK(_fd,_type,_ts) _thread_fd_lock(_fd, _type, _ts)
+#define _FD_UNLOCK(_fd,_type) _thread_fd_unlock(_fd, _type)
+#endif
+
+/*
+ * Function prototype definitions.
+ */
+__BEGIN_DECLS
+int _find_dead_thread(pthread_t);
+int _find_thread(pthread_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 *);
+int _thread_fd_lock_debug(int, int, struct timespec *,char *fname,int lineno);
+void _dispatch_signals(void);
+void _thread_signal(pthread_t, int);
+void _lock_dead_thread_list(void);
+void _lock_thread(void);
+void _lock_thread_list(void);
+void _unlock_dead_thread_list(void);
+void _unlock_thread(void);
+void _unlock_thread_list(void);
+void _thread_exit(char *, int, char *);
+void _thread_fd_unlock(int, int);
+void _thread_fd_unlock_debug(int, int, char *, int);
+void *_thread_cleanup(pthread_t);
+void _thread_cleanupspecific(void);
+void _thread_dump_info(void);
+void _thread_init(void) __attribute__((constructor));
+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_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> */
+#ifdef _USER_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_siginterrupt(int, int);
+int _thread_sys_sigpause(int);
+int _thread_sys_sigreturn(struct sigcontext *);
+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);
+#endif
+
+/* #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_
+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 <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 _SYS_WAIT_H_
+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 */