rename current stable linuxthreads to linuxthreads.old to prepare for import of latest glibc version

1 files changed, 0 insertions, 518 deletions

diff --git a/libpthread/linuxthreads/internals.h b/libpthread/linuxthreads/internals.h
deleted file mode 100644
index 50a4d2d59..000000000
--- a/libpthread/linuxthreads/internals.h
+++ /dev/null
@@ -1,518 +0,0 @@
-/* Linuxthreads - a simple clone()-based implementation of Posix        */
-/* threads for Linux.                                                   */
-/* Copyright (C) 1996 Xavier Leroy (Xavier.Leroy@inria.fr)              */
-/*                                                                      */
-/* This program is free software; you can redistribute it and/or        */
-/* modify it under the terms of the GNU Library General Public License  */
-/* as published by the Free Software Foundation; either version 2       */
-/* of the License, or (at your option) any later version.               */
-/*                                                                      */
-/* This program is distributed in the hope that it will be useful,      */
-/* but WITHOUT ANY WARRANTY; without even the implied warranty of       */
-/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        */
-/* GNU Library General Public License for more details.                 */
-
-#ifndef _INTERNALS_H
-#define _INTERNALS_H   1
-
-/* Internal data structures */
-
-/* Includes */
-
-#include <bits/libc-tsd.h> /* for _LIBC_TSD_KEY_N */
-#include <limits.h>
-#include <setjmp.h>
-#include <signal.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include "pt-machine.h"
-#include "semaphore.h"
-#include "../linuxthreads_db/thread_dbP.h"
-#ifdef __UCLIBC_HAS_XLOCALE__
-#include <bits/uClibc_locale.h>
-#endif /* __UCLIBC_HAS_XLOCALE__ */
-
-/* Use a funky version in a probably vein attempt at preventing gdb 
- * from dlopen()'ing glibc's libthread_db library... */
-#define STRINGIFY(s) STRINGIFY2 (s)
-#define STRINGIFY2(s) #s
-#define VERSION STRINGIFY(__UCLIBC_MAJOR__) "." STRINGIFY(__UCLIBC_MINOR__) "." STRINGIFY(__UCLIBC_SUBLEVEL__)
-
-#ifndef THREAD_GETMEM
-# define THREAD_GETMEM(descr, member) descr->member
-#endif
-#ifndef THREAD_GETMEM_NC
-# define THREAD_GETMEM_NC(descr, member) descr->member
-#endif
-#ifndef THREAD_SETMEM
-# define THREAD_SETMEM(descr, member, value) descr->member = (value)
-#endif
-#ifndef THREAD_SETMEM_NC
-# define THREAD_SETMEM_NC(descr, member, value) descr->member = (value)
-#endif
-
-/* Arguments passed to thread creation routine */
-
-struct pthread_start_args {
-  void * (*start_routine)(void *); /* function to run */
-  void * arg;                   /* its argument */
-  sigset_t mask;                /* initial signal mask for thread */
-  int schedpolicy;              /* initial scheduling policy (if any) */
-  struct sched_param schedparam; /* initial scheduling parameters (if any) */
-};
-
-
-/* We keep thread specific data in a special data structure, a two-level
-   array.  The top-level array contains pointers to dynamically allocated
-   arrays of a certain number of data pointers.  So we can implement a
-   sparse array.  Each dynamic second-level array has
-	PTHREAD_KEY_2NDLEVEL_SIZE
-   entries.  This value shouldn't be too large.  */
-#define PTHREAD_KEY_2NDLEVEL_SIZE	32
-
-/* We need to address PTHREAD_KEYS_MAX key with PTHREAD_KEY_2NDLEVEL_SIZE
-   keys in each subarray.  */
-#define PTHREAD_KEY_1STLEVEL_SIZE \
-  ((PTHREAD_KEYS_MAX + PTHREAD_KEY_2NDLEVEL_SIZE - 1) \
-   / PTHREAD_KEY_2NDLEVEL_SIZE)
-
-typedef void (*destr_function)(void *);
-
-struct pthread_key_struct {
-  int in_use;                   /* already allocated? */
-  destr_function destr;         /* destruction routine */
-};
-
-
-#define PTHREAD_START_ARGS_INITIALIZER { NULL, NULL, {{0, }}, 0, { 0 } }
-
-/* The type of thread descriptors */
-
-typedef struct _pthread_descr_struct * pthread_descr;
-
-/* Callback interface for removing the thread from waiting on an
-   object if it is cancelled while waiting or about to wait.
-   This hold a pointer to the object, and a pointer to a function
-   which ``extricates'' the thread from its enqueued state.
-   The function takes two arguments: pointer to the wait object,
-   and a pointer to the thread. It returns 1 if an extrication
-   actually occured, and hence the thread must also be signalled.
-   It returns 0 if the thread had already been extricated. */
-
-typedef struct _pthread_extricate_struct {
-    void *pu_object;
-    int (*pu_extricate_func)(void *, pthread_descr);
-} pthread_extricate_if;
-
-/* Atomic counter made possible by compare_and_swap */
-
-struct pthread_atomic {
-  long p_count;
-  int p_spinlock;
-};
-
-/* Context info for read write locks. The pthread_rwlock_info structure
-   is information about a lock that has been read-locked by the thread
-   in whose list this structure appears. The pthread_rwlock_context
-   is embedded in the thread context and contains a pointer to the
-   head of the list of lock info structures, as well as a count of
-   read locks that are untracked, because no info structure could be
-   allocated for them. */
-
-struct _pthread_rwlock_t;
-
-typedef struct _pthread_rwlock_info {
-  struct _pthread_rwlock_info *pr_next;
-  struct _pthread_rwlock_t *pr_lock;
-  int pr_lock_count;
-} pthread_readlock_info;
-
-struct _pthread_descr_struct {
-  pthread_descr p_nextlive, p_prevlive;
-                                /* Double chaining of active threads */
-  pthread_descr p_nextwaiting;  /* Next element in the queue holding the thr */
-  pthread_descr p_nextlock;	/* can be on a queue and waiting on a lock */
-  pthread_t p_tid;              /* Thread identifier */
-  int p_pid;                    /* PID of Unix process */
-  int p_priority;               /* Thread priority (== 0 if not realtime) */
-  struct _pthread_fastlock * p_lock; /* Spinlock for synchronized accesses */
-  int p_signal;                 /* last signal received */
-  sigjmp_buf * p_signal_jmp;    /* where to siglongjmp on a signal or NULL */
-  sigjmp_buf * p_cancel_jmp;    /* where to siglongjmp on a cancel or NULL */
-  char p_terminated;            /* true if terminated e.g. by pthread_exit */
-  char p_detached;              /* true if detached */
-  char p_exited;                /* true if the assoc. process terminated */
-  void * p_retval;              /* placeholder for return value */
-  int p_retcode;                /* placeholder for return code */
-  pthread_descr p_joining;      /* thread joining on that thread or NULL */
-  struct _pthread_cleanup_buffer * p_cleanup; /* cleanup functions */
-  char p_cancelstate;           /* cancellation state */
-  char p_canceltype;            /* cancellation type (deferred/async) */
-  char p_canceled;              /* cancellation request pending */
-  int * p_errnop;               /* pointer to used errno variable */
-  int p_errno;                  /* error returned by last system call */
-  int * p_h_errnop;             /* pointer to used h_errno variable */
-  int p_h_errno;                /* error returned by last netdb function */
-  char * p_in_sighandler;       /* stack address of sighandler, or NULL */
-  char p_sigwaiting;            /* true if a sigwait() is in progress */
-  struct pthread_start_args p_start_args; /* arguments for thread creation */
-  void ** p_specific[PTHREAD_KEY_1STLEVEL_SIZE]; /* thread-specific data */
-  void * p_libc_specific[_LIBC_TSD_KEY_N]; /* thread-specific data for libc */
-  int p_userstack;		/* nonzero if the user provided the stack */
-  void *p_guardaddr;		/* address of guard area or NULL */
-  size_t p_guardsize;		/* size of guard area */
-  pthread_descr p_self;		/* Pointer to this structure */
-  int p_nr;                     /* Index of descriptor in __pthread_handles */
-  int p_report_events;         /* Nonzero if events must be reported.  */
-  td_eventbuf_t p_eventbuf;     /* Data for event.  */
-  struct pthread_atomic p_resume_count; /* number of times restart() was
-					   called on thread */
-  char p_woken_by_cancel;       /* cancellation performed wakeup */
-  char p_condvar_avail;         /* flag if conditional variable became avail */
-  char p_sem_avail;             /* flag if semaphore became available */
-  pthread_extricate_if *p_extricate; /* See above */
-  pthread_readlock_info *p_readlock_list;  /* List of readlock info structs */
-  pthread_readlock_info *p_readlock_free;  /* Free list of structs */
-  int p_untracked_readlock_count;	/* Readlocks not tracked by list */
-  /* New elements must be added at the end.  */
-#ifdef __UCLIBC_HAS_XLOCALE__
-  __locale_t locale; /* thread-specific locale from uselocale() only! */
-#endif /* __UCLIBC_HAS_XLOCALE__ */
-} __attribute__ ((aligned(32))); /* We need to align the structure so that
-				    doubles are aligned properly.  This is 8
-				    bytes on MIPS and 16 bytes on MIPS64.
-				    32 bytes might give better cache
-				    utilization.  */
-
-/* The type of thread handles. */
-
-typedef struct pthread_handle_struct * pthread_handle;
-
-struct pthread_handle_struct {
-  struct _pthread_fastlock h_lock; /* Fast lock for sychronized access */
-  pthread_descr h_descr;        /* Thread descriptor or NULL if invalid */
-  char * h_bottom;              /* Lowest address in the stack thread */
-};
-
-/* The type of messages sent to the thread manager thread */
-
-struct pthread_request {
-  pthread_descr req_thread;     /* Thread doing the request */
-  enum {                        /* Request kind */
-    REQ_CREATE, REQ_FREE, REQ_PROCESS_EXIT, REQ_MAIN_THREAD_EXIT,
-    REQ_POST, REQ_DEBUG, REQ_KICK
-  } req_kind;
-  union {                       /* Arguments for request */
-    struct {                    /* For REQ_CREATE: */
-      const pthread_attr_t * attr; /* thread attributes */
-      void * (*fn)(void *);     /*   start function */
-      void * arg;               /*   argument to start function */
-      sigset_t mask;            /*   signal mask */
-    } create;
-    struct {                    /* For REQ_FREE: */
-      pthread_t thread_id;      /*   identifier of thread to free */
-    } free;
-    struct {                    /* For REQ_PROCESS_EXIT: */
-      int code;                 /*   exit status */
-    } exit;
-    void * post;                /* For REQ_POST: the semaphore */
-  } req_args;
-};
-
-
-/* Signals used for suspend/restart and for cancellation notification.  */
-
-extern int __pthread_sig_restart;
-extern int __pthread_sig_cancel;
-
-/* Signal used for interfacing with gdb */
-
-extern int __pthread_sig_debug;
-
-/* Global array of thread handles, used for validating a thread id
-   and retrieving the corresponding thread descriptor. Also used for
-   mapping the available stack segments. */
-
-extern struct pthread_handle_struct __pthread_handles[PTHREAD_THREADS_MAX];
-
-/* Descriptor of the initial thread */
-
-extern struct _pthread_descr_struct __pthread_initial_thread;
-
-/* Descriptor of the manager thread */
-
-extern struct _pthread_descr_struct __pthread_manager_thread;
-
-/* Descriptor of the main thread */
-
-extern pthread_descr __pthread_main_thread;
-
-/* Limit between the stack of the initial thread (above) and the
-   stacks of other threads (below). Aligned on a STACK_SIZE boundary.
-   Initially 0, meaning that the current thread is (by definition)
-   the initial thread. */
-
-/* For non-MMU systems also remember to stack top of the initial thread.
- * This is adapted when other stacks are malloc'ed since we don't know
- * the bounds a-priori. -StS */
-
-extern char *__pthread_initial_thread_bos;
-#ifndef __ARCH_HAS_MMU__
-extern char *__pthread_initial_thread_tos;
-#define NOMMU_INITIAL_THREAD_BOUNDS(tos,bos) \
-	if ((tos)>=__pthread_initial_thread_bos \
-	    && (bos)<__pthread_initial_thread_tos) \
-		__pthread_initial_thread_bos = (tos)+1
-#else
-#define NOMMU_INITIAL_THREAD_BOUNDS(tos,bos) /* empty */
-#endif /* __ARCH_HAS_MMU__ */
-
-
-/* Indicate whether at least one thread has a user-defined stack (if 1),
-   or all threads have stacks supplied by LinuxThreads (if 0). */
-
-extern int __pthread_nonstandard_stacks;
-
-/* File descriptor for sending requests to the thread manager.
-   Initially -1, meaning that __pthread_initialize_manager must be called. */
-
-extern int __pthread_manager_request;
-
-/* Other end of the pipe for sending requests to the thread manager. */
-
-extern int __pthread_manager_reader;
-
-/* Limits of the thread manager stack. */
-
-extern char *__pthread_manager_thread_bos;
-extern char *__pthread_manager_thread_tos;
-
-/* Pending request for a process-wide exit */
-
-extern int __pthread_exit_requested, __pthread_exit_code;
-
-/* Set to 1 by gdb if we're debugging */
-
-extern volatile int __pthread_threads_debug;
-
-/* Globally enabled events.  */
-extern volatile td_thr_events_t __pthread_threads_events;
-
-/* Pointer to descriptor of thread with last event.  */
-extern volatile pthread_descr __pthread_last_event;
-
-/* Return the handle corresponding to a thread id */
-
-static inline pthread_handle thread_handle(pthread_t id)
-{
-  return &__pthread_handles[id % PTHREAD_THREADS_MAX];
-}
-
-/* Validate a thread handle. Must have acquired h->h_spinlock before. */
-
-static inline int invalid_handle(pthread_handle h, pthread_t id)
-{
-  return h->h_descr == NULL || h->h_descr->p_tid != id;
-}
-
-/* Fill in defaults left unspecified by pt-machine.h.  */
-
-/* The page size we can get from the system.  This should likely not be
-   changed by the machine file but, you never know.  */
-extern size_t __pagesize;
-#include <bits/uClibc_page.h>
-#ifndef PAGE_SIZE
-#define PAGE_SIZE  (sysconf (_SC_PAGESIZE))
-#endif
-
-/* The max size of the thread stack segments.  If the default
-   THREAD_SELF implementation is used, this must be a power of two and
-   a multiple of PAGE_SIZE.  */
-#ifndef STACK_SIZE
-#ifdef __ARCH_HAS_MMU__
-#define STACK_SIZE  (2 * 1024 * 1024)
-#else
-#define STACK_SIZE  (4 * __pagesize)
-#endif
-#endif
-
-/* The initial size of the thread stack.  Must be a multiple of PAGE_SIZE.  */
-#ifndef INITIAL_STACK_SIZE
-#define INITIAL_STACK_SIZE  (4 * __pagesize)
-#endif
-
-/* Size of the thread manager stack. The "- 32" avoids wasting space
-   with some malloc() implementations. */
-#ifndef THREAD_MANAGER_STACK_SIZE
-#define THREAD_MANAGER_STACK_SIZE  (2 * __pagesize - 32)
-#endif
-
-/* The base of the "array" of thread stacks.  The array will grow down from
-   here.  Defaults to the calculated bottom of the initial application
-   stack.  */
-#ifndef THREAD_STACK_START_ADDRESS
-#define THREAD_STACK_START_ADDRESS  __pthread_initial_thread_bos
-#endif
-
-/* Get some notion of the current stack.  Need not be exactly the top
-   of the stack, just something somewhere in the current frame.  */
-#ifndef CURRENT_STACK_FRAME
-#define CURRENT_STACK_FRAME  ({ char __csf; &__csf; })
-#endif
-
-/* If MEMORY_BARRIER isn't defined in pt-machine.h, assume the
-   architecture doesn't need a memory barrier instruction (e.g. Intel
-   x86).  Still we need the compiler to respect the barrier and emit
-   all outstanding operations which modify memory.  Some architectures
-   distinguish between full, read and write barriers.  */
-#ifndef MEMORY_BARRIER
-#define MEMORY_BARRIER() asm ("" : : : "memory")
-#endif
-#ifndef READ_MEMORY_BARRIER
-#define READ_MEMORY_BARRIER() MEMORY_BARRIER()
-#endif
-#ifndef WRITE_MEMORY_BARRIER
-#define WRITE_MEMORY_BARRIER() MEMORY_BARRIER()
-#endif
-
-/* Recover thread descriptor for the current thread */
-
-extern pthread_descr __pthread_find_self (void) __attribute__ ((const));
-
-static inline pthread_descr thread_self (void) __attribute__ ((const));
-static inline pthread_descr thread_self (void)
-{
-#ifdef THREAD_SELF
-  return THREAD_SELF;
-#else
-  char *sp = CURRENT_STACK_FRAME;
-#ifdef __ARCH_HAS_MMU__
-  if (sp >= __pthread_initial_thread_bos)
-    return &__pthread_initial_thread;
-  else if (sp >= __pthread_manager_thread_bos
-	   && sp < __pthread_manager_thread_tos)
-    return &__pthread_manager_thread;
-  else if (__pthread_nonstandard_stacks)
-    return __pthread_find_self();
-  else
-    return (pthread_descr)(((unsigned long)sp | (STACK_SIZE-1))+1) - 1;
-#else
-  /* For non-MMU we need to be more careful about the initial thread stack.
-   * We refine the initial thread stack bounds dynamically as we allocate
-   * the other stack frame such that it doesn't overlap with them. Then
-   * we can be sure to pick the right thread according to the current SP */
-
-  /* Since we allow other stack frames to be above or below, we need to
-   * treat this case special. When pthread_initialize() wasn't called yet,
-   * only the initial thread is there. */
-  if (__pthread_initial_thread_bos == NULL) {
-      return &__pthread_initial_thread;
-  }
-  else if (sp >= __pthread_initial_thread_bos
-	   && sp < __pthread_initial_thread_tos) {
-      return &__pthread_initial_thread;
-  }
-  else if (sp >= __pthread_manager_thread_bos
-	   && sp < __pthread_manager_thread_tos) {
-      return &__pthread_manager_thread;
-  }
-  else {
-      return __pthread_find_self();
-  }
-#endif /* __ARCH_HAS_MMU__ */
-#endif
-}
-
-/* Max number of times we must spin on a spinlock calling sched_yield().
-   After MAX_SPIN_COUNT iterations, we put the calling thread to sleep. */
-
-#ifndef MAX_SPIN_COUNT
-#define MAX_SPIN_COUNT 50
-#endif
-
-/* Duration of sleep (in nanoseconds) when we can't acquire a spinlock
-   after MAX_SPIN_COUNT iterations of sched_yield().
-   With the 2.0 and 2.1 kernels, this MUST BE > 2ms.
-   (Otherwise the kernel does busy-waiting for realtime threads,
-    giving other threads no chance to run.) */
-
-#ifndef SPIN_SLEEP_DURATION
-#define SPIN_SLEEP_DURATION 2000001
-#endif
-
-/* Debugging */
-
-#ifdef DEBUG
-#include <assert.h>
-#define ASSERT assert
-#define MSG __pthread_message
-#else
-#define ASSERT(x)
-#define MSG(msg,arg...)
-#endif
-
-/* Internal global functions */
-
-void __pthread_destroy_specifics(void);
-void __pthread_perform_cleanup(void);
-int __pthread_initialize_manager(void);
-void __pthread_message(char * fmt, ...);
-int __pthread_manager(void *reqfd);
-int __pthread_manager_event(void *reqfd);
-void __pthread_manager_sighandler(int sig);
-void __pthread_reset_main_thread(void);
-void __fresetlockfiles(void);
-void __pthread_manager_adjust_prio(int thread_prio);
-void __pthread_initialize_minimal (void);
-
-extern int __pthread_attr_setguardsize __P ((pthread_attr_t *__attr,
-					     size_t __guardsize));
-extern int __pthread_attr_getguardsize __P ((__const pthread_attr_t *__attr,
-					     size_t *__guardsize));
-extern int __pthread_attr_setstackaddr __P ((pthread_attr_t *__attr,
-					     void *__stackaddr));
-extern int __pthread_attr_getstackaddr __P ((__const pthread_attr_t *__attr,
-					     void **__stackaddr));
-extern int __pthread_attr_setstacksize __P ((pthread_attr_t *__attr,
-					     size_t __stacksize));
-extern int __pthread_attr_getstacksize __P ((__const pthread_attr_t *__attr,
-					     size_t *__stacksize));
-extern int __pthread_getconcurrency __P ((void));
-extern int __pthread_setconcurrency __P ((int __level));
-extern int __pthread_mutexattr_gettype __P ((__const pthread_mutexattr_t *__attr,
-					     int *__kind));
-extern void __pthread_kill_other_threads_np __P ((void));
-
-extern void __pthread_restart_old(pthread_descr th);
-extern void __pthread_suspend_old(pthread_descr self);
-extern int __pthread_timedsuspend_old(pthread_descr self, const struct timespec *abs);
-
-extern void __pthread_restart_new(pthread_descr th);
-extern void __pthread_suspend_new(pthread_descr self);
-extern int __pthread_timedsuspend_new(pthread_descr self, const struct timespec *abs);
-
-extern void __pthread_wait_for_restart_signal(pthread_descr self);
-
-/* Global pointers to old or new suspend functions */
-
-extern void (*__pthread_restart)(pthread_descr);
-extern void (*__pthread_suspend)(pthread_descr);
-
-/* Prototypes for the function without cancelation support when the
-   normal version has it.  */
-extern int __libc_close (int fd);
-extern int __libc_nanosleep (const struct timespec *requested_time,
-			     struct timespec *remaining);
-extern ssize_t __libc_read (int fd, void *buf, size_t count);
-extern pid_t __libc_waitpid (pid_t pid, int *stat_loc, int options);
-extern ssize_t __libc_write (int fd, const void *buf, size_t count);
-
-/* Prototypes for some of the new semaphore functions.  */
-extern int __new_sem_post (sem_t * sem);
-
-/* The functions called the signal events.  */
-extern void __linuxthreads_create_event (void);
-extern void __linuxthreads_death_event (void);
-extern void __linuxthreads_reap_event (void);
-
-#endif /* internals.h */