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Diffstat (limited to 'libpthread/linuxthreads/internals.h')
| -rw-r--r-- | libpthread/linuxthreads/internals.h | 346 |
1 files changed, 0 insertions, 346 deletions
diff --git a/libpthread/linuxthreads/internals.h b/libpthread/linuxthreads/internals.h deleted file mode 100644 index a91682df1..000000000 --- a/libpthread/linuxthreads/internals.h +++ /dev/null @@ -1,346 +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 <features.h> -#include <bits/libc-tsd.h> /* for _LIBC_TSD_KEY_N */ -#include <limits.h> -#include <setjmp.h> -#include <signal.h> -#include <unistd.h> -#include <bits/stackinfo.h> -#include <sys/types.h> -#include "pt-machine.h" -#include <ucontext.h> -#include <bits/sigcontextinfo.h> -#include "semaphore.h" -#ifdef __UCLIBC_HAS_XLOCALE__ -#include <bits/uClibc_locale.h> -#endif /* __UCLIBC_HAS_XLOCALE__ */ -#include "descr.h" - -/* 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 - -#if !defined NOT_IN_libc && defined FLOATING_STACKS -# define LIBC_THREAD_GETMEM(descr, member) THREAD_GETMEM (descr, member) -# define LIBC_THREAD_SETMEM(descr, member, value) \ - THREAD_SETMEM (descr, member, value) -#else -# define LIBC_THREAD_GETMEM(descr, member) descr->member -# define LIBC_THREAD_SETMEM(descr, member, value) descr->member = (value) -#endif - -typedef void (*destr_function)(void *); - -struct pthread_key_struct { - int in_use; /* already allocated? */ - destr_function destr; /* destruction routine */ -}; - - -#define PTHREAD_START_ARGS_INITIALIZER(fct) \ - { (void *(*) (void *)) fct, NULL, {{0, }}, 0, { 0 } } - - -/* 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_FOR_EACH_THREAD - } 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 */ - struct { /* For REQ_FOR_EACH_THREAD: callback */ - void (*fn)(void *, pthread_descr); - void *arg; - } for_each; - } req_args; -}; - - - -typedef void (*arch_sighandler_t) (int, SIGCONTEXT); -union sighandler -{ - arch_sighandler_t old; - void (*rt) (int, struct siginfo *, struct ucontext *); -}; -extern union sighandler __sighandler[NSIG]; - - -/* 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 main thread */ - -extern pthread_descr __pthread_main_thread; - -/* 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; - -#ifdef FLOATING_STACKS -/* Maximum stack size. */ -extern size_t __pthread_max_stacksize; -#endif - -/* 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; - -/* Flag which tells whether we are executing on SMP kernel. */ -extern int __pthread_smp_kernel; - -/* 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 || h->h_descr->p_terminated; -} - -static inline int nonexisting_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. */ - -/* We round up a value with page size. */ -#ifndef page_roundup -#define page_roundup(v,p) ((((size_t) (v)) + (p) - 1) & ~((p) - 1)) -#endif - -/* 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_PAGE_SIZE)) -#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 - -/* 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 - -/* 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 - -/* Max number of times the spinlock in the adaptive mutex implementation - spins actively on SMP systems. */ - -#ifndef MAX_ADAPTIVE_SPIN_COUNT -#define MAX_ADAPTIVE_SPIN_COUNT 100 -#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 */ |