Obtain the process id and name in linux.

Linux obtains the process id and name as a shared library, and requires statistics on the usage frequency and usage of various applications in this library. In order to make better improvements to the main applications. Www.2cto.com, you need to record the caller's process id or name, and...
Linux obtains the process id and name as a shared library, and requires statistics on the usage frequency and usage of various applications in this library. In order to make better improvements to the main applications. Www.2cto.com, you need to record the caller's process id or name and save it. You can use shared memory or files to save the action. in the next blog, This article describes how to obtain the process id and name. Example: # include # Include # Define into mng_task_name_len 256 int main () {int ret; char ac_tmp [using mng_task_name_len]; ret = using mng_get_taskname (ac_tmp, using mng_task_name_len); if (0! = Ret) {printf ("Call into mng_get_taskname fail. \ n "); return-1;} printf (" The running task name is % s. \ n ", ac_tmp); return 0;} int character mng_get_taskname (char * ac, int len) {int count = 0; int nIndex = 0; char chPath [export mng_task_name_len] = {0}; char cParam [100] = {0}; char * cTem = chPath; int tmp_len; pid_t pId = getpid (); sprintf (cParam, "/proc/% d/exe", pId);/* printf ("cParam = % s. \ n ", cParam); */count = readlink (cParam, chPath, CFGMNG_TASK_NAME_LEN);/* printf (" count = % d. \ n ", count); */if (count <0 | count> = running mng_task_name_len) {printf (" Current System Not Surport Proc. \ n "); return-1;} else {nIndex = count-1; for (; nIndex> = 0; nIndex --) {if (chPath [nIndex] = '/') // filter the process name {nIndex ++; cTem + = nIndex; break ;}}} tmp_len = strlen (cTem); if (0 = tmp_len) {printf ("Get task fail. \ n "); return-1;} if (len <= tmp_len + 1) {printf (" len (% d) is less than taskname (% s)'s len. \ n ", len, cTem); return-1;} strcpy (ac, cTem); return 0;} as shown in the preceding experiment example, the main function used is getpid to get the id of the process, and then to/proc/pid/exe
To find the corresponding process name. There are a lot of process-related things in the/proc directory. you can use this method to bypass implementation.