119 lines
3.5 KiB
C
119 lines
3.5 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <mach/mach.h>
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#include <stdbool.h>
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#include <time.h>
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static const char TOPPROC[32] = { "/bin/ps -Aceo pid,pcpu,comm -r" };
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static const char FILTER_PATTERN[16] = { "com.apple." };
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struct cpu {
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host_t host;
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mach_msg_type_number_t count;
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host_cpu_load_info_data_t load;
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host_cpu_load_info_data_t prev_load;
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bool has_prev_load;
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char command[256];
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};
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static inline void cpu_init(struct cpu* cpu) {
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cpu->host = mach_host_self();
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cpu->count = HOST_CPU_LOAD_INFO_COUNT;
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cpu->has_prev_load = false;
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snprintf(cpu->command, 100, "");
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}
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static inline void cpu_update(struct cpu* cpu) {
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kern_return_t error = host_statistics(cpu->host,
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HOST_CPU_LOAD_INFO,
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(host_info_t)&cpu->load,
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&cpu->count );
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if (error != KERN_SUCCESS) {
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printf("Error: Could not read cpu host statistics.\n");
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return;
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}
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if (cpu->has_prev_load) {
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uint32_t delta_user = cpu->load.cpu_ticks[CPU_STATE_USER]
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- cpu->prev_load.cpu_ticks[CPU_STATE_USER];
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uint32_t delta_system = cpu->load.cpu_ticks[CPU_STATE_SYSTEM]
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- cpu->prev_load.cpu_ticks[CPU_STATE_SYSTEM];
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uint32_t delta_idle = cpu->load.cpu_ticks[CPU_STATE_IDLE]
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- cpu->prev_load.cpu_ticks[CPU_STATE_IDLE];
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double user_perc = (double)delta_user / (double)(delta_system
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+ delta_user
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+ delta_idle);
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double sys_perc = (double)delta_system / (double)(delta_system
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+ delta_user
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+ delta_idle);
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double total_perc = user_perc + sys_perc;
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FILE* file;
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char line[1024];
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file = popen(TOPPROC, "r");
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if (!file) {
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printf("Error: TOPPROC command errored out...\n" );
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return;
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}
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fgets(line, sizeof(line), file);
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fgets(line, sizeof(line), file);
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char* start = strstr(line, FILTER_PATTERN);
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char topproc[32];
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uint32_t caret = 0;
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for (int i = 0; i < sizeof(line); i++) {
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if (start && i == start - line) {
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i+=9;
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continue;
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}
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if (i > 29) break;
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if (i > 27) {
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topproc[caret++] = '.';
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continue;
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}
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topproc[caret++] = line[i];
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if (line[i] == '\0') break;
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}
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pclose(file);
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char color[16];
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if (total_perc >= .7) {
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snprintf(color, 16, "%s", getenv("RED"));
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} else if (total_perc >= .3) {
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snprintf(color, 16, "%s", getenv("ORANGE"));
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} else if (total_perc >= .1) {
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snprintf(color, 16, "%s", getenv("YELLOW"));
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} else {
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snprintf(color, 16, "%s", getenv("LABEL_COLOR"));
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}
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snprintf(cpu->command, 256, "--push cpu.sys %.2f "
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"--push cpu.user %.2f "
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"--set cpu.percent label=%.0f%% label.color=%s "
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"--set cpu.top label=\"%s\"",
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sys_perc,
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user_perc,
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total_perc*100.,
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color,
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topproc );
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}
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else {
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snprintf(cpu->command, 256, "");
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}
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cpu->prev_load = cpu->load;
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cpu->has_prev_load = true;
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}
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