哪些系统将EAGAIN和EWOULDBLOCK定义为不同的值? [英] Which systems define EAGAIN and EWOULDBLOCK as different values?

问题描述

很好奇.哪些系统同时提供EAGAIN和EWOULDBLOCK #define作为不同的值?

Just curious. Which systems providing both EAGAIN and EWOULDBLOCK #define them as different values?

推荐答案

有一些...

可移植性注意:在许多较旧的Unix系统中，这种情况由EWOULDBLOCK指示，这是与EAGAIN不同的独特错误代码.为了使您的程序具有可移植性，您应该检查两个代码并对其进行相同处理.

Portability Note: In many older Unix systems, this condition was indicated by EWOULDBLOCK, which was a distinct error code different from EAGAIN. To make your program portable, you should check for both codes and treat them the same.

http://lists.parisc-linux.org/hypermail/parisc-linux/9895.html

在某些SysV系统上，EAGAIN！= EWOULDBLOCK.我认为我们继承了 HPUX的errno定义...

On some SysV systems EAGAIN != EWOULDBLOCK. I think we inherited the errno definitions from HPUX...

较旧的AIX也是这样的系统: http://programming.itags.org/unix-linux-programming/81597/

Older AIX is such system too: http://programming.itags.org/unix-linux-programming/81597/

HP-UX(和AIX的较早版本)

HP-UX (and older versions of AIX)

对于AIX，我找到了代码列表: http://homepage3.nifty.com/owl_h0h0/unix/job/UNIX/tutorial/error.html

For AIX I found the list of codes: http://homepage3.nifty.com/owl_h0h0/unix/job/UNIX/tutorial/error.html

11个EAGAIN； 54 EWOULDBLOCK

11 EAGAIN; 54 EWOULDBLOCK

也是

OS/390: http://web.archiveorange.com/archive/v/zvbaIz8u6TzsQHHjfzOi

OS/390和其他平台，其中EWOULDBLOCK！= EAGAIN

OS/390 and other platforms where EWOULDBLOCK != EAGAIN

有更完整的表: http://www.ioplex.com/~miallen/errcmp .html

        SUSv3   AIX 4.3,5.1 HP-UX 11.22 Solaris 9,10    Linux 2.4.28,2.6.9  IRIX 6.5[4] OSF1    FreeBSD 5.2.1   OSX 10.3.8  MSVC6
EAGAIN  1   0   Resource unavailable, try again [3] 11  Resource temporarily unavailable    11  No more processes   11  Resource temporarily unavailable    11  Try again   11  Resource temporarily unavailable    11  ditto   35  Resource temporarily unavailable    35  Resource temporarily unavailable    11  Resource temporarily unavailable

EWOULDBLOCK 0.9 0   Operation would block [3]   54  Operation would block [2]   246 Operation would block   11      11  Operation would block   11  Resource temporarily unavailable    35  Operation would block   35  Operation would block   35  Operation would block

因此，AIX 4.3,5.1; HP-UX 11.22和OSF1对EAGAIN和EWOULDBLOCK使用不同的代码

So, AIX 4.3,5.1; HP-UX 11.22 and OSF1 uses different codes for EAGAIN and EWOULDBLOCK

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