int newfd2(int fd[2], Chan *c[2]) { Fgrp *f; f = up->fgrp; lock(f); fd[0] = findfreefd(f, 0); if(fd[0] < 0){ unlockfgrp(f); return -1; } fd[1] = findfreefd(f, fd[0]+1); if(fd[1] < 0){ unlockfgrp(f); return -1; } if(fd[1] > f->maxfd) f->maxfd = fd[1]; f->fd[fd[0]] = c[0]; f->fd[fd[1]] = c[1]; unlockfgrp(f); return 0; }
static int newfd2(int fd[2], Chan *c[2]) { Proc *up = externup(); Fgrp *f; f = up->fgrp; lock(&f->r.l); fd[0] = findfreefd(f, 0); if(fd[0] < 0){ unlockfgrp(f); return -1; } fd[1] = findfreefd(f, fd[0]+1); if(fd[1] < 0){ unlockfgrp(f); return -1; } if(fd[1] > f->maxfd) f->maxfd = fd[1]; f->fd[fd[0]] = c[0]; f->fd[fd[1]] = c[1]; unlockfgrp(f); return 0; }
int newfd(Chan *c) { int fd; Fgrp *f; f = up->fgrp; lock(f); fd = findfreefd(f, 0); if(fd < 0){ unlockfgrp(f); return -1; } if(fd > f->maxfd) f->maxfd = fd; f->fd[fd] = c; unlockfgrp(f); return fd; }
int newfd(Chan *c) { Proc *up = externup(); int fd; Fgrp *f; f = up->fgrp; lock(&f->r.l); fd = findfreefd(f, 0); if(fd < 0){ unlockfgrp(f); return -1; } if(fd > f->maxfd) f->maxfd = fd; f->fd[fd] = c; unlockfgrp(f); return fd; }