HPUX系统列举进程信息

初衷：写了一个库，提供给其他人调用，在出错的时候写日记想把进程信息（主要是进程名，运行参数等）记录下来，忘了怎么做了（除了传入argv[0]和通过pipe调ps之外）。bs下自己，居然连pstat系列函数都忘了，还到CU去发帖问。

在HPUX上可以用pstat系列函数，可以查到大量的系统信息。在linux上可以查/proc下的文件。

这是HPUX上查进程名代码

void getprocinfo() { int r; struct pst_status buf; r = pstat_getproc(&buf,sizeof(buf),0,getpid());//指定getpid和elemcount=0查当前进程 if(r<0) { printf("get proc error %d/n",errno); return ; } printf("/n/n------------------------------------------------------------------------------"); printf("/n %5s | %5s |%7s| %5s | %s", "PID", "UID", "Threads", "RSS", "Command"); printf("/n------------------------------------------------------------------------------"); printf("/n %5ld | ", buf.pst_pid); printf("%5ld | ", buf.pst_uid); printf("%5ld | ", buf.pst_nlwps); printf("%5ld | ", buf.pst_rssize); printf("%s/n ", buf.pst_cmd); }

其中pst_status结构定义在/usr/include/sys/pm_pstat_body.h,有巨多的信息 列出所有进程：

void listproc() { struct pst_status * psa = NULL; struct pst_status * prc = NULL; struct pst_dynamic psd; long nproc = 0; long thsum = 0; long i; if ( pstat_getdynamic(&psd, sizeof(psd), 1, 0) == -1 ) (void)perror("pstat_getdynamic failed"); // Get the number of active processes from pst_dynamic nproc = psd.psd_activeprocs; psa = (struct pst_status *)malloc(nproc * sizeof(struct pst_status)); // Read the info about the active processes into the array psa if ( pstat_getproc(psa, sizeof(struct pst_status), nproc, 0) == -1 ) (void)perror("pstat_getproc failed"); (void)printf("/n/n------------------------------------------------------------------------------"); (void)printf("/n %5s | %5s | %10s |%7s| %5s | %5s| %5s|%s", "PID", "UID","UNAME", "Threads", "RSS", "Command"); (void)printf("/n------------------------------------------------------------------------------"); // Report the process info as required prc = (struct pst_status *)psa; int uid =getuid(); for (i=0; i < nproc; i++) { printf("/n %5ld | ", prc->pst_pid); printf("%5ld | ", prc->pst_uid); printf(" %10s |",getpwuid(prc->pst_uid)->pw_name); printf("%5ld | ", prc->pst_nlwps); printf("%5ld | ", prc->pst_rssize); printf("%s ", prc->pst_cmd); thsum += prc->pst_nlwps; ++prc; } (void)printf("/n/n*** %ld processes, %ld threads running/n/n", nproc, thsum); (void)free(psa); }