linuxÖеÄreturnÎÊÌâ - Linux/UnixÉçÇø / ³ÌÐò¿ª·¢Çø
ÓÐÒ»¶Î´´½¨ÏûÏ¢¶ÓÁеĴúÂëÈçÏ£º
int creat_msg_queue()
{
key_t key;
int proj_id;
int msqid;
struct msqid_ds buffer;
proj_id=2;
key=ftok("/home/program",proj_id);
if(key==-1){
perror("cannot generate the IPC key");
return -1;
}
msqid=msgget(key,IPC_CREAT | 0660);
if(msqid==-1){
perror("cannot create message queue resource");
return -1;
}
printf("msqid=%d\n",msqid);
return msqid;
}
Ôڸú¯ÊýÖÐÎÒ´òÓ¡³öµÄ¡°msqid¡±µÄÊýÖµÊÇ32769
µ«ÊǸú¯ÊýµÄ·µ»ØÖµÈ´ÊÇ0£¬ÕâÊÇΪʲô°¡£¿
32769µÄ¶þ½øÖÆÂëÊÇ1000000000000001ÕýºÃÊÇ0µÄ²¹Âë¡£²»¹ýÎÒ½âÊͲ»ÁË£¬±ê¼ÇµÈ´ý¸ßÈË
C/C++ code:
#include <stdio.h>
# include <sys/ipc.h>
#include <sys/types.h>
#include <sys/msg.h>
#include <unistd.h>
int creat_msg_queue()
{
key_t key;
int proj_id;
int msqid;
struct msqid_ds buffer;
proj_id=2;
key=ftok("/home/program",proj_id);
if(key==
Ïà¹ØÎÊ´ð£º
Á½¸öÎļþ1.PC£¬1.inc
1.PCÓвÙ×÷oracleÊý¾Ý¿âµÄ ,1.incÒ²ÓвÙ×÷oracleÊý¾Ý¿â
ÔÚÆäËûÊý¾ÝÖÐÈçinformix ÖÐ$include 1.inc¾Í¿ÉÒÔʹÓÃÁË
ÔÚORACLEÊý¾Ý¿âÖØ $include 1.inc²»¿ÉÓà EXEC SQL include 1.incÒ²²»¿É ......
¾ßÌåְλҪÇó£º
1. ´óѧ±¾¿ÆÒÔÉÏѧÀú£¬¼ÆËã»úÏà¹Ø×¨Òµ±ÏÒµ£»
2. ÊìϤTCP/IPÐÒé¡¢SocketÍøÂç±à³Ì¡¢¶àÏ̱߳à³Ì£»
3. ¾«Í¨LinuxÏÂC/C++ÓïÑÔ±à³Ì¡¢GCC±àÒëÆ÷¡¢gdbµ÷ÊÔÆ÷µÄʹÓã¬ÊìϤMakefileºÍShell£»
4. Á˽âÈí¼þ¿ ......
ÓÐһ̨·þÎñÆ÷ÄÚ´æÊÇ8g,ÉÏÃæ¾ÍÅÜÁËÒ»¸ötomcat£¬ÆäËûʲô¶¼Ã»ÓУ¬tomcatÉèÖÃÁË×î´óÄÚ´æÎª1g,µ«ÊDz»ÖªµÀÔõô»ØÊÂÇéÄÚ´æÊ¹Óõķdz£¶à¡£
[equitydev@szgeoweb1 ~]$ free -m
total used ......
ÔÚLinuxÉÏÖ´ÐÐrenameº¯Êýʧ°Ü£¬·µ»ØµÄ´íÎóÂëerrnoÊÇ2£¬ÕâÊÇÓÉÓÚʲôÔÒòµ¼ÖµĴíÎó°¡£¬ÊÇÔÚRedHatµÄ»úÆ÷ÉÏ
ÓÃperrorÊÔÊÔ¡¢¡¢¿´¿´Êä³öµÄ´íÎó×Ö·û´®ÊÇʲô¾ÍÇå³þÁË¡¢¡¢
ÒòΪÊDz¿Êðµ½ÏÖÍøµÄ³ÌÐò²»ÄÜËæ±ã¸Ä´úÂë£¬Ò ......