Processes and threads

1.

① A program enters memory , The corresponding resources will be allocated （ Mainly memory space ）, So processes are used to allocate memory space （ Storing data ）. Threads are not allocated memory , They are different computing units in the same memory space （ Different instructions , No data involved ）.

in short , The process is allocated memory space to put data , Threads execute instructions one by one .

② Same code （ Instructions ） Can be executed by multiple threads （ It may be under different threads , The parameters of the same code are different ）.

For example, the same function add(i, j), Threads a Under the i And j Namely 3、4, And threads b Under the i And j Namely 5、6.

③