X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=src%2Fprint_cpu_usage.c;h=a5021bfcbbb85afe724a8eec6fa9401fad86c377;hb=0e4fd9ad4a4cc7d6c770134a077e91b02f6cd2f0;hp=1753cf53044ea8cd307f00124507211ec695023b;hpb=8e852fa94554f4caa162256e5f6ce2413027100b;p=i3%2Fi3status diff --git a/src/print_cpu_usage.c b/src/print_cpu_usage.c index 1753cf5..a5021bf 100644 --- a/src/print_cpu_usage.c +++ b/src/print_cpu_usage.c @@ -1,4 +1,8 @@ // vim:ts=4:sw=4:expandtab +#include +#if defined(__linux__) +#include +#endif #include #include #include @@ -33,35 +37,79 @@ #include "i3status.h" -static int prev_total = 0; -static int prev_idle = 0; +struct cpu_usage { + int user; + int nice; + int system; + int idle; + int total; +}; + +static int cpu_count = 0; +static struct cpu_usage prev_all = {0, 0, 0, 0, 0}; +static struct cpu_usage *prev_cpus = NULL; +static struct cpu_usage *curr_cpus = NULL; /* * Reads the CPU utilization from /proc/stat and returns the usage as a * percentage. * */ -void print_cpu_usage(yajl_gen json_gen, char *buffer, const char *format, const float max_threshold, const float degraded_threshold) { +void print_cpu_usage(yajl_gen json_gen, char *buffer, const char *format, const char *format_above_threshold, const char *format_above_degraded_threshold, const char *path, const float max_threshold, const float degraded_threshold) { + const char *selected_format = format; const char *walk; char *outwalk = buffer; - int curr_user = 0, curr_nice = 0, curr_system = 0, curr_idle = 0, curr_total; + struct cpu_usage curr_all = {0, 0, 0, 0, 0}; int diff_idle, diff_total, diff_usage; bool colorful_output = false; -#if defined(LINUX) - static char statpath[512]; - char buf[1024]; - strcpy(statpath, "/proc/stat"); - if (!slurp(statpath, buf, sizeof(buf)) || - sscanf(buf, "cpu %d %d %d %d", &curr_user, &curr_nice, &curr_system, &curr_idle) != 4) +#if defined(__linux__) + + // Detecting if CPU count has changed + int curr_cpu_count = get_nprocs_conf(); + if (curr_cpu_count != cpu_count) { + cpu_count = curr_cpu_count; + free(prev_cpus); + prev_cpus = (struct cpu_usage *)calloc(cpu_count, sizeof(struct cpu_usage)); + free(curr_cpus); + curr_cpus = (struct cpu_usage *)calloc(cpu_count, sizeof(struct cpu_usage)); + } + + memcpy(curr_cpus, prev_cpus, cpu_count * sizeof(struct cpu_usage)); + char buf[4096]; + curr_cpu_count = get_nprocs(); + if (!slurp(path, buf, sizeof(buf))) + goto error; + // Parsing all cpu values using strtok + if (strtok(buf, "\n") == NULL) goto error; + char *buf_itr = NULL; + for (int idx = 0; idx < curr_cpu_count; ++idx) { + buf_itr = strtok(NULL, "\n"); + int cpu_idx, user, nice, system, idle; + if (!buf_itr || sscanf(buf_itr, "cpu%d %d %d %d %d", &cpu_idx, &user, &nice, &system, &idle) != 5) { + goto error; + } + if (cpu_idx < 0 || cpu_idx >= cpu_count) + goto error; + curr_cpus[cpu_idx].user = user; + curr_cpus[cpu_idx].nice = nice; + curr_cpus[cpu_idx].system = system; + curr_cpus[cpu_idx].idle = idle; + curr_cpus[cpu_idx].total = user + nice + system + idle; + } + for (int cpu_idx = 0; cpu_idx < cpu_count; cpu_idx++) { + curr_all.user += curr_cpus[cpu_idx].user; + curr_all.nice += curr_cpus[cpu_idx].nice; + curr_all.system += curr_cpus[cpu_idx].system; + curr_all.idle += curr_cpus[cpu_idx].idle; + curr_all.total += curr_cpus[cpu_idx].total; + } - curr_total = curr_user + curr_nice + curr_system + curr_idle; - diff_idle = curr_idle - prev_idle; - diff_total = curr_total - prev_total; + diff_idle = curr_all.idle - prev_all.idle; + diff_total = curr_all.total - prev_all.total; diff_usage = (diff_total ? (1000 * (diff_total - diff_idle) / diff_total + 5) / 10 : 0); - prev_total = curr_total; - prev_idle = curr_idle; + prev_all = curr_all; #elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) #if defined(__FreeBSD__) || defined(__DragonFly__) || defined(__NetBSD__) @@ -83,42 +131,74 @@ void print_cpu_usage(yajl_gen json_gen, char *buffer, const char *format, const goto error; #endif - curr_user = cp_time[CP_USER]; - curr_nice = cp_time[CP_NICE]; - curr_system = cp_time[CP_SYS]; - curr_idle = cp_time[CP_IDLE]; - curr_total = curr_user + curr_nice + curr_system + curr_idle; - diff_idle = curr_idle - prev_idle; - diff_total = curr_total - prev_total; + curr_all.user = cp_time[CP_USER]; + curr_all.nice = cp_time[CP_NICE]; + curr_all.system = cp_time[CP_SYS]; + curr_all.idle = cp_time[CP_IDLE]; + curr_all.total = curr_all.user + curr_all.nice + curr_all.system + curr_all.idle; + diff_idle = curr_all.idle - prev_all.idle; + diff_total = curr_all.total - prev_all.total; diff_usage = (diff_total ? (1000 * (diff_total - diff_idle) / diff_total + 5) / 10 : 0); - prev_total = curr_total; - prev_idle = curr_idle; + prev_all = curr_all; #else goto error; #endif - for (walk = format; *walk != '\0'; walk++) { + + if (diff_usage >= max_threshold) { + START_COLOR("color_bad"); + colorful_output = true; + if (format_above_threshold != NULL) + selected_format = format_above_threshold; + } else if (diff_usage >= degraded_threshold) { + START_COLOR("color_degraded"); + colorful_output = true; + if (format_above_degraded_threshold != NULL) + selected_format = format_above_degraded_threshold; + } + + for (walk = selected_format; *walk != '\0'; walk++) { if (*walk != '%') { *(outwalk++) = *walk; - continue; - } - if (diff_usage >= max_threshold) { - START_COLOR("color_bad"); - colorful_output = true; - } else if (diff_usage >= degraded_threshold) { - START_COLOR("color_degraded"); - colorful_output = true; - } - - if (BEGINS_WITH(walk + 1, "usage")) { + } else if (BEGINS_WITH(walk + 1, "usage")) { outwalk += sprintf(outwalk, "%02d%s", diff_usage, pct_mark); walk += strlen("usage"); } - - if (colorful_output) - END_COLOR; +#if defined(__linux__) + else if (BEGINS_WITH(walk + 1, "cpu")) { + int number = -1; + sscanf(walk + 1, "cpu%d", &number); + if (number == -1) { + fprintf(stderr, "i3status: provided CPU number cannot be parsed\n"); + } else if (number >= cpu_count) { + fprintf(stderr, "i3status: provided CPU number '%d' above detected number of CPU %d\n", number, cpu_count); + } else { + int cpu_diff_idle = curr_cpus[number].idle - prev_cpus[number].idle; + int cpu_diff_total = curr_cpus[number].total - prev_cpus[number].total; + int cpu_diff_usage = (cpu_diff_total ? (1000 * (cpu_diff_total - cpu_diff_idle) / cpu_diff_total + 5) / 10 : 0); + outwalk += sprintf(outwalk, "%02d%s", cpu_diff_usage, pct_mark); + } + int padding = 1; + int step = 10; + while (step <= number) { + step *= 10; + padding++; + } + walk += strlen("cpu") + padding; + } +#endif + else { + *(outwalk++) = '%'; + } } + struct cpu_usage *temp_cpus = prev_cpus; + prev_cpus = curr_cpus; + curr_cpus = temp_cpus; + + if (colorful_output) + END_COLOR; + OUTPUT_FULL_TEXT(buffer); return; error: