ssize_t是什么类型阿？

t土疙瘩

我找了半天，只找到了typedef __ssize_t  ssize_t
可是这到底是什么样的结构体阿？
在哪个文件中定义的？:thank

Jackosn.K

grep ssize_t *

peterwlp

应该是一个无符号整型！

njkzkj

http://www.delorie.com/gnu/docs/glibc/libc_239.html
Data Type: ssize_t
   This data type is used to represent the sizes of blocks that can be read or written in a single operation. It is similar to size_t, but must be a signed type.

http://www.gnu.org/software/libc ... ant-Data-Types.html
— Data Type: size_t
   This is an unsigned integer type used to represent the sizes of objects. The result of the sizeof operator is of this type, and functions such as malloc (see Unconstrained Allocation) and memcpy (see Copying and Concatenation) accept arguments of this type to specify object sizes.

dragon99

Post by njkzkj;1664804
http://www.delorie.com/gnu/docs/glibc/libc_239.html
Data Type: ssize_t
   This data type is used to represent the sizes of blocks that can be read or written in a single operation. It is similar to size_t, but must be a signed type.

http://www.gnu.org/software/libc ... ant-Data-Types.html
— Data Type: size_t
   This is an unsigned integer type used to represent the sizes of objects. The result of the sizeof operator is of this type, and functions such as malloc (see Unconstrained Allocation) and memcpy (see Copying and Concatenation) accept arguments of this type to specify object sizes.

thanks,it's a good message

xlongfeng

typedef int                        __kernel_ssize_t;
typedef __kernel_ssize_t        ssize_t;

mikeandmore

偷偷的说。。。我怎么觉得是unsigned long