void __testcancel() { if (!libc.has_thread_pointer) return; pthread_t self = __pthread_self(); if (self->cancel && !self->canceldisable) __cancel(); }
long (__syscall_cp)(syscall_arg_t nr, syscall_arg_t u, syscall_arg_t v, syscall_arg_t w, syscall_arg_t x, syscall_arg_t y, syscall_arg_t z) { pthread_t self; long r; if (!libc.has_thread_pointer || (self = __pthread_self())->canceldisable) return __syscall(nr, u, v, w, x, y, z); r = __syscall_cp_asm(&self->cancel, nr, u, v, w, x, y, z); if (r==-EINTR && nr!=SYS_close && self->cancel && !self->canceldisable) __cancel(); return r; }
static void cancel_handler(int sig, siginfo_t *si, void *ctx) { pthread_t self = __pthread_self(); ucontext_t *uc = ctx; const char *ip = ((char **)&uc->uc_mcontext)[CANCEL_REG_IP]; extern const char __cp_begin[1], __cp_end[1]; if (!self->cancel || self->canceldisable) return; _sigaddset(&uc->uc_sigmask, SIGCANCEL); if (self->cancelasync || ip >= __cp_begin && ip < __cp_end) { self->canceldisable = 1; pthread_sigmask(SIG_SETMASK, &uc->uc_sigmask, 0); __cancel(); } __syscall(SYS_tgkill, self->pid, self->tid, SIGCANCEL); }
static void cancel_handler(int sig, siginfo_t *si, void *ctx) { pthread_t self = __pthread_self(); ucontext_t *uc = ctx; uintptr_t sp = ((uintptr_t *)&uc->uc_mcontext)[CANCEL_REG_SP]; uintptr_t ip = ((uintptr_t *)&uc->uc_mcontext)[CANCEL_REG_IP]; if (!self->cancel || self->canceldisable) return; _sigaddset(&uc->uc_sigmask, SIGCANCEL); if (self->cancelasync || sp == self->cp_sp && ip <= self->cp_ip) { self->canceldisable = 1; pthread_sigmask(SIG_SETMASK, &uc->uc_sigmask, 0); __cancel(); } if (self->cp_sp) __syscall(SYS_tgkill, self->pid, self->tid, SIGCANCEL); }
long (__syscall_cp)(long nr, long u, long v, long w, long x, long y, long z) { pthread_t self; uintptr_t old_sp, old_ip; long r; if (!libc.main_thread || (self = __pthread_self())->canceldisable) return __syscall(nr, u, v, w, x, y, z); old_sp = self->cp_sp; old_ip = self->cp_ip; self->cp_sp = 0; self->cp_ip = 0; r = __syscall_cp_asm(&self->cp_sp, nr, u, v, w, x, y, z); self->cp_ip = old_ip; self->cp_sp = old_sp; if (r==-EINTR && nr!=SYS_close && self->cancel && !self->canceldisable) __cancel(); return r; }
void __testcancel() { pthread_t self = pthread_self(); if (self->cancel && !self->canceldisable) __cancel(); }