projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 6bafdb92 C |
1 | /* inline.h 4.3 81/02/26 */ |
| 2 | /* | |
| 3 | * Definitions of inlines, and macro replacements | |
| 4 | * for them if UNFAST (latter only scantily tested). | |
| 5 | */ | |
| 6 | ||
| 7 | #ifndef UNFAST | |
| 8 | ||
| 9 | #define plock(ip) \ | |
| 10 | { \ | |
| 11 | while ((ip)->i_flag & ILOCK) { \ | |
| 12 | (ip)->i_flag |= IWANT; \ | |
| 13 | sleep((caddr_t)(ip), PINOD); \ | |
| 14 | } \ | |
| 15 | (ip)->i_flag |= ILOCK; \ | |
| 16 | } | |
| 17 | ||
| 18 | #define prele(ip) \ | |
| 19 | { \ | |
| 20 | (ip)->i_flag &= ~ILOCK; \ | |
| 21 | if ((ip)->i_flag&IWANT) { \ | |
| 22 | (ip)->i_flag &= ~IWANT; \ | |
| 23 | wakeup((caddr_t)(ip)); \ | |
| 24 | } \ | |
| 25 | } | |
| 26 | ||
| 27 | #define GETF(fp, fd) { \ | |
| 28 | if ((unsigned)(fd) >= NOFILE || ((fp) = u.u_ofile[fd]) == NULL) { \ | |
| 29 | u.u_error = EBADF; \ | |
| 30 | return; \ | |
| 31 | } \ | |
| 32 | } | |
| 33 | ||
| 34 | #define IUPDAT(ip, t1, t2, waitfor) { \ | |
| 35 | if (ip->i_flag&(IUPD|IACC|ICHG)) \ | |
| 36 | iupdat(ip, t1, t2, waitfor); \ | |
| 37 | } | |
| 38 | #define ISSIG(p) ((p)->p_sig && \ | |
| 39 | ((p)->p_flag&STRC || ((p)->p_sig &~ (p)->p_ignsig)) && issig()) | |
| 40 | #else | |
| 41 | ||
| 42 | #define GETF(fp, fd) { \ | |
| 43 | (fp) = getf(fd); \ | |
| 44 | if ((fp) == NULL) \ | |
| 45 | return; \ | |
| 46 | } | |
| 47 | ||
| 48 | #define IUPDAT(ip, t1, t2, waitfor) iupdat(ip, t1, t2, waitfor) | |
| 49 | ||
| 50 | #define ISSIG(p) issig(p) | |
| 51 | #endif |