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#include <stdio.h> |
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#include <local/ukcprog.h> |
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#include <unistd.h> |
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|
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#define WAIT_TIME_IN_SECS 1 |
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char *get_cpu_stats(){ |
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double u_p, i_p, k_p; |
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#ifdef LINUX |
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long total, user, idle, kernel, nice; |
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long cpu_states[4][2]; |
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FILE *f; |
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#endif |
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|
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#ifdef LINUX |
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if ((f=fopen("/proc/stat", "r" ))==NULL) { |
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errf("Failed to open /proc/stat (%m)"); |
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return NULL; |
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} |
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|
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/* cpu stats should be the first line.. */ |
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if((fscanf(f,"%*s %ld %ld %ld %ld", &cpu_states[0][0], &cpu_states[1][0], &cpu_states[2][0] ,&cpu_states[3][0])) != 4){ |
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errf("Failed to read in correct number of CPU stats (%m)"); |
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return NULL; |
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} |
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|
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if ((fclose(f)) != 0) { |
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errf("Failed to close file (%m)"); |
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return NULL; |
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} |
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|
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sleep(WAIT_TIME_IN_SECS); |
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|
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if ((f=fopen("/proc/stat", "r" ))==NULL) { |
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errf("Failed to open /proc/stat (%m)"); |
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return NULL; |
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} |
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if((fscanf(f,"%*s %ld %ld %ld %ld", &cpu_states[0][1], &cpu_states[1][1], &cpu_states[2][1] ,&cpu_states[3][1])) != 4){ |
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errf("Failed to read in correct number of CPU stats (%m)"); |
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return NULL; |
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} |
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|
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if ((fclose(f)) != 0) { |
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errf("Failed to close file (%m)"); |
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return NULL; |
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} |
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|
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user=cpu_states[0][1]-cpu_states[0][0]+cpu_states[1][1]-cpu_states[1][0]; |
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kernel=cpu_states[2][1]-cpu_states[2][0]; |
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idle=cpu_states[3][1]-cpu_states[3][0]; |
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total=user+kernel+idle; |
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|
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u_p=((double)user/(double)total)*100.00; |
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k_p=((double)kernel/(double)total)*100.00; |
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i_p=((double)idle/(double)total)*100.00; |
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|
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#endif |
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|
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return "jibble"; |
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} |
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|
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int main(){ |
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get_cpu_stats(); |
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exit(0); |
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} |
