src/internal/pthread_impl.h

   1 #ifndef _PTHREAD_IMPL_H
   2 #define _PTHREAD_IMPL_H
   3
   4 #include <pthread.h>
   5 #include <signal.h>
   6 #include <errno.h>
   7 #include <limits.h>
   8 #include "libc.h"
   9 #include "syscall.h"
  10 #include "atomic.h"
  11 #include "futex.h"
  12
  13 #define pthread __pthread
  14
  15 struct pthread {
  16         struct pthread *self;
  17         void **dtv, *unused1, *unused2;
  18         uintptr_t sysinfo;
  19         uintptr_t canary, canary2;
  20         pid_t tid, pid;
  21         int tsd_used, errno_val;
  22         volatile int cancel, canceldisable, cancelasync;
  23         int detached;
  24         unsigned char *map_base;
  25         size_t map_size;
  26         void *stack;
  27         size_t stack_size;
  28         void *start_arg;
  29         void *(*start)(void *);
  30         void *result;
  31         struct __ptcb *cancelbuf;
  32         void **tsd;
  33         pthread_attr_t attr;
  34         volatile int dead;
  35         struct {
  36                 volatile void *volatile head;
  37                 long off;
  38                 volatile void *volatile pending;
  39         } robust_list;
  40         int unblock_cancel;
  41         volatile int timer_id;
  42         locale_t locale;
  43         volatile int killlock[2];
  44         volatile int exitlock[2];
  45         volatile int startlock[2];
  46         unsigned long sigmask[_NSIG/8/sizeof(long)];
  47         char *dlerror_buf;
  48         int dlerror_flag;
  49         void *stdio_locks;
  50         uintptr_t canary_at_end;
  51         void **dtv_copy;
  52 };
  53
  54 struct __timer {
  55         int timerid;
  56         pthread_t thread;
  57 };
  58
  59 #define __SU (sizeof(size_t)/sizeof(int))
  60
  61 #define _a_stacksize __u.__s[0]
  62 #define _a_guardsize __u.__s[1]
  63 #define _a_stackaddr __u.__s[2]
  64 #define _a_detach __u.__i[3*__SU+0]
  65 #define _a_sched __u.__i[3*__SU+1]
  66 #define _a_policy __u.__i[3*__SU+2]
  67 #define _a_prio __u.__i[3*__SU+3]
  68 #define _m_type __u.__i[0]
  69 #define _m_lock __u.__vi[1]
  70 #define _m_waiters __u.__vi[2]
  71 #define _m_prev __u.__p[3]
  72 #define _m_next __u.__p[4]
  73 #define _m_count __u.__i[5]
  74 #define _c_shared __u.__p[0]
  75 #define _c_seq __u.__vi[2]
  76 #define _c_waiters __u.__vi[3]
  77 #define _c_clock __u.__i[4]
  78 #define _c_lock __u.__vi[8]
  79 #define _c_head __u.__p[1]
  80 #define _c_tail __u.__p[5]
  81 #define _rw_lock __u.__vi[0]
  82 #define _rw_waiters __u.__vi[1]
  83 #define _rw_shared __u.__i[2]
  84 #define _b_lock __u.__vi[0]
  85 #define _b_waiters __u.__vi[1]
  86 #define _b_limit __u.__i[2]
  87 #define _b_count __u.__vi[3]
  88 #define _b_waiters2 __u.__vi[4]
  89 #define _b_inst __u.__p[3]
  90
  91 #include "pthread_arch.h"
  92
  93 #ifndef CANARY
  94 #define CANARY canary
  95 #endif
  96
  97 #ifndef DTP_OFFSET
  98 #define DTP_OFFSET 0
  99 #endif
 100
 101 #define SIGTIMER 32
 102 #define SIGCANCEL 33
 103 #define SIGSYNCCALL 34
 104
 105 #define SIGALL_SET ((sigset_t *)(const unsigned long long [2]){ -1,-1 })
 106 #define SIGPT_SET \
 107         ((sigset_t *)(const unsigned long [_NSIG/8/sizeof(long)]){ \
 108         [sizeof(long)==4] = 3UL<<(32*(sizeof(long)>4)) })
 109 #define SIGTIMER_SET \
 110         ((sigset_t *)(const unsigned long [_NSIG/8/sizeof(long)]){ \
 111          0x80000000 })
 112
 113 pthread_t __pthread_self_init(void);
 114
 115 int __clone(int (*)(void *), void *, int, void *, ...);
 116 int __set_thread_area(void *);
 117 int __libc_sigaction(int, const struct sigaction *, struct sigaction *);
 118 int __libc_sigprocmask(int, const sigset_t *, sigset_t *);
 119 void __lock(volatile int *);
 120 void __unmapself(void *, size_t);
 121
 122 void __vm_wait(void);
 123 void __vm_lock(void);
 124 void __vm_unlock(void);
 125
 126 int __timedwait(volatile int *, int, clockid_t, const struct timespec *, int);
 127 int __timedwait_cp(volatile int *, int, clockid_t, const struct timespec *, int);
 128 void __wait(volatile int *, volatile int *, int, int);
 129 static inline void __wake(volatile void *addr, int cnt, int priv)
 130 {
 131         if (priv) priv = 128;
 132         if (cnt<0) cnt = INT_MAX;
 133         __syscall(SYS_futex, addr, FUTEX_WAKE|priv, cnt) != -ENOSYS ||
 134         __syscall(SYS_futex, addr, FUTEX_WAKE, cnt);
 135 }
 136
 137 void __acquire_ptc(void);
 138 void __release_ptc(void);
 139 void __inhibit_ptc(void);
 140
 141 void __block_all_sigs(void *);
 142 void __block_app_sigs(void *);
 143 void __restore_sigs(void *);
 144
 145 #define DEFAULT_STACK_SIZE 81920
 146 #define DEFAULT_GUARD_SIZE PAGE_SIZE
 147
 148 #define __ATTRP_C11_THREAD ((void*)(uintptr_t)-1)
 149
 150 #endif