nv-auth-bit

• for inter process authenticate OR memory-management

install

• npm install nv-auth-bit

splitted

usage

  const { s,c}   = require("nv-auth-bit");

example

first creat a shmem

   var shmem = s("nvauth_bit",1024*1024*8/*bytes*/);
   /*
	{
	  shmid: 2,               //remeber this
	  bytsz: 8388608,                                   
	  bitsz: 67108864,        //remeber this
	  pathname: '/mnt/sda3/NV6-/nvauth/pkgs/nv-auth-bit/nvauth_bit'
	}
   */

   > process.pid
   166069
   > 
    
   /*
		# ipcs

		------ Message Queues --------
		key        msqid      owner      perms      used-bytes   messages    

		------ Shared Memory Segments --------
		key        shmid      owner      perms      bytes      nattch     status      
		0x41020376 2          root       0          8388608    0                       

		------ Semaphore Arrays --------
		key        semid      owner      perms      nsems     
   */

on other process

authenticate process

       var shmid  = 2;
       var bitsz  = 67108864;
       var authen = c.creat_for_auther(shmid,bitsz);
       

		/*
		> authen
		ForAuther {
		  id: 1,                        //maybe usable id
		  bits: {
		    is_any_fls: true,
		    is_any_tru: false,
		    are_all_fls: true,
		    are_all_tru: false,
		    count_of_0: 67108864,
		    count_of_1: 0,
		    bit_capacity: 67108864
		  }
		}
		> 
		*/

		var id = authen.aloc(); // aloced id in auther

		/*
		>id 
		1

		> authen
		ForAuther {
		  id: 2,
		  bits: {
		    is_any_fls: true,
		    is_any_tru: true,
		    are_all_fls: false,
		    are_all_tru: false,
		    count_of_0: 67108863,
		    count_of_1: 1,
		    bit_capacity: 67108864
		  }
		}
		> 
		*/

		> process.pid
		171179
		>

one handle process

       var shmid  = 2;
       var bitsz  = 67108864;
       var for_handler = c.creat_for_handler(shmid,bitsz);           
       for_handler.is_valid(id/*aloced id in auther*/); 
       /*
			ForHandler {
			  bits: {
			    is_any_fls: true,
			    is_any_tru: true,
			    are_all_fls: false,
			    are_all_tru: false,
			    count_of_0: 67108863,
			    count_of_1: 1,
			    bit_capacity: 67108864
			  }
			}
       */
       for_handler.free(id /*aloced id in auther*/);
       for_handler.is_valid(id /*aloced id in auther*/);
       /*
			> for_handler
			ForHandler {
			  bits: {
			    is_any_fls: true,
			    is_any_tru: false,
			    are_all_fls: true,
			    are_all_tru: false,
			    count_of_0: 67108864,
			    count_of_1: 0,
			    bit_capacity: 67108864
			  }
			}
			> process.pid
			177568
			> .
       */

METHODS

APIS

LICENSE

• ISC