diff options
Diffstat (limited to 'lib/libc_r/uthread/pthread_private.h')
| -rw-r--r-- | lib/libc_r/uthread/pthread_private.h | 629 |
1 files changed, 629 insertions, 0 deletions
diff --git a/lib/libc_r/uthread/pthread_private.h b/lib/libc_r/uthread/pthread_private.h new file mode 100644 index 0000000..fc8ba27 --- /dev/null +++ b/lib/libc_r/uthread/pthread_private.h @@ -0,0 +1,629 @@ +/* + * 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) + +/* + * Thread creation state attributes. + */ +#define PTHREAD_CREATE_RUNNING 0 +#define PTHREAD_CREATE_SUSPENDED 1 + +/* + * Miscellaneous definitions. + */ +#define PTHREAD_STACK_MIN 1024 +#define PTHREAD_STACK_DEFAULT 65536 +#define PTHREAD_DATAKEYS_MAX 256 +#define PTHREAD_DEFAULT_PRIORITY 64 +#define PTHREAD_MAX_PRIORITY 126 +#define PTHREAD_MIN_PRIORITY 0 +#define _POSIX_THREAD_ATTR_STACKSIZE +#define _POSIX_THREAD_DESTRUTOR_ITERATIONS 4 + +/* + * 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; + pthread_attr_t 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 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 pthread_attr_t 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 + +/* 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); +#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 */ |
