mirror of
https://github.com/fluencelabs/musl
synced 2025-04-29 00:52:15 +00:00
3f72cdac73
several things are changed. first, i have removed the old __uniclone function signature and replaced it with the "standard" linux __clone/clone signature. this was necessary to expose clone to applications anyway, and it makes it easier to port __clone to new archs, since it's now testable independently of pthread_create. secondly, i have removed all references to the ugly ldt descriptor structure (i386 only) from the c code and pthread structure. in places where it is needed, it is now created on the stack just when it's needed, in assembly code. thus, the i386 __clone function takes the desired thread pointer as its argument, rather than an ldt descriptor pointer, just like on all other sane archs. this should not affect applications since there is really no way an application can use clone with threads/tls in a way that doesn't horribly conflict with and clobber the underlying implementation's use. applications are expected to use clone only for creating actual processes, possibly with new namespace features and whatnot.
107 lines
2.4 KiB
C
107 lines
2.4 KiB
C
#ifndef _PTHREAD_IMPL_H
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#define _PTHREAD_IMPL_H
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#include <pthread.h>
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#include <sched.h>
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#include <signal.h>
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#include <unistd.h>
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#include <sys/mman.h>
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#include <errno.h>
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#include <limits.h>
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#include <inttypes.h>
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#include <setjmp.h>
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#include <string.h>
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#include <time.h>
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#include <locale.h>
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#include "libc.h"
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#include "syscall.h"
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#include "atomic.h"
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#include "futex.h"
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#define pthread __pthread
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struct pthread {
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struct pthread *self;
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pid_t tid, pid;
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int tsd_used, errno_val, *errno_ptr;
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volatile uintptr_t cp_sp, cp_ip;
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volatile int cancel, canceldisable, cancelasync;
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unsigned char *map_base;
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size_t map_size;
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void *start_arg;
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void *(*start)(void *);
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void *result;
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int detached;
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int exitlock;
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struct __ptcb *cancelbuf;
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void **tsd;
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pthread_attr_t attr;
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volatile int dead;
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struct {
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void **head;
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long off;
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void *pending;
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} robust_list;
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int unblock_cancel;
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int delete_timer;
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locale_t locale;
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int killlock;
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};
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struct __timer {
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int timerid;
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pthread_t thread;
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};
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#define __SU (sizeof(size_t)/sizeof(int))
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#define _a_stacksize __u.__s[0]
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#define _a_guardsize __u.__s[1]
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#define _a_detach __u.__i[2*__SU+0]
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#define _m_type __u.__i[0]
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#define _m_lock __u.__i[1]
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#define _m_waiters __u.__i[2]
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#define _m_prev __u.__p[3]
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#define _m_next __u.__p[4]
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#define _m_count __u.__i[5]
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#define _c_block __u.__i[0]
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#define _c_clock __u.__i[1]
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#define _rw_lock __u.__i[0]
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#define _rw_waiters __u.__i[1]
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#define _b_inst __u.__p[0]
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#define _b_limit __u.__i[2]
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#define _b_lock __u.__i[3]
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#define _b_waiters __u.__i[4]
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#include "pthread_arch.h"
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#define SIGTIMER 32
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#define SIGCANCEL 33
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#define SIGSYNCCALL 34
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#define SIGPT_SET ((sigset_t *)(unsigned long [1+(sizeof(long)==4)]){ \
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[sizeof(long)==4] = 3UL<<(32*(sizeof(long)>4)) })
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#define SIGTIMER_SET ((sigset_t *)(unsigned long [1+(sizeof(long)==4)]){ \
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0x80000000 })
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pthread_t __pthread_self_init(void);
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int __clone(int (*)(void *), void *, int, void *, ...);
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int __set_thread_area(void *);
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int __libc_sigaction(int, const struct sigaction *, struct sigaction *);
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int __libc_sigprocmask(int, const sigset_t *, sigset_t *);
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void __lock(volatile int *);
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void __unmapself(void *, size_t);
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int __timedwait(volatile int *, int, clockid_t, const struct timespec *, void (*)(void *), void *, int);
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void __wait(volatile int *, volatile int *, int, int);
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void __wake(volatile int *, int, int);
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void __synccall_lock();
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void __synccall_unlock();
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#define DEFAULT_STACK_SIZE (16384-PAGE_SIZE)
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#define DEFAULT_GUARD_SIZE PAGE_SIZE
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#endif
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