Linux sysinfo获取系统相关信息
Linux中,可以用sysinfo来获取系统相关信息。
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | #include <stdio.h> #include <stdlib.h> #include <errno.h> #include <linux/unistd.h> /* for _syscallX macros/related stuff */ #include <linux/kernel.h> /* for struct sysinfo */ //_syscall1(int, sysinfo, struct sysinfo *, info); /* Note: if you copy directly from the nroff source, remember to * REMOVE the extra backslashes in the printf statement. */ int main( void ) { struct sysinfo s_info; int error; error = sysinfo(&s_info); printf ( "code error = %d\n" , error); printf ( "Uptime = %lds\nLoad: 1 min %lu / 5 min %lu / 15 min %lu\n" "RAM: total %lu / free %lu / shared %lu\n" "Memory in buffers = %lu\nSwap: total %lu / free %lu\n" "Number of processes = %d\n" , s_info.uptime, s_info.loads[0], s_info.loads[1], s_info.loads[2], s_info.totalram, s_info.freeram, s_info.sharedram, s_info.bufferram, s_info.totalswap, s_info.freeswap, s_info.procs); exit (EXIT_SUCCESS); } |
code error = 0
Uptime = 47428s
Load: 1 min 192 / 5 min 2272 / 15 min 2976
RAM: total 1027239936 / free 249516032 / shared 0
Memory in buffers = 0
Swap: total 2147479552 / free 2092707840
Number of processes = 391
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