Get memory info in a different function
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lucic71
parent
6b28312230
commit
a6ca7b4f2f
254
src/print_mem.c
254
src/print_mem.c
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@ -99,6 +99,101 @@ struct print_mem_info {
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char *output_color;
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};
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static void get_memory_info(struct print_mem_info *minfo, memory_ctx_t *ctx) {
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char *outwalk = ctx->buf;
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#if defined(__linux__)
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int unread_fields = 6;
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minfo->output_color = NULL
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FILE *file = fopen("/proc/meminfo", "r");
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if (!file) {
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goto error;
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}
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for (char line[128]; fgets(line, sizeof line, file);) {
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if (BEGINS_WITH(line, "MemTotal:")) {
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minfo->ram_total = strtoul(line + strlen("MemTotal:"), NULL, 10);
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} else if (BEGINS_WITH(line, "MemFree:")) {
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minfo->ram_free = strtoul(line + strlen("MemFree:"), NULL, 10);
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} else if (BEGINS_WITH(line, "MemAvailable:")) {
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minfo->ram_available = strtoul(line + strlen("MemAvailable:"), NULL, 10);
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} else if (BEGINS_WITH(line, "Buffers:")) {
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minfo->ram_buffers = strtoul(line + strlen("Buffers:"), NULL, 10);
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} else if (BEGINS_WITH(line, "Cached:")) {
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minfo->ram_cached = strtoul(line + strlen("Cached:"), NULL, 10);
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} else if (BEGINS_WITH(line, "Shmem:")) {
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minfo->ram_shared = strtoul(line + strlen("Shmem:"), NULL, 10);
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} else {
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continue;
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}
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if (--unread_fields == 0) {
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break;
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}
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}
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fclose(file);
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if (unread_fields > 0) {
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goto error;
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}
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// Values are in kB, convert them to B.
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minfo->ram_total *= 1024UL;
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minfo->ram_free *= 1024UL;
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minfo->ram_available *= 1024UL;
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minfo->ram_buffers *= 1024UL;
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minfo->ram_cached *= 1024UL;
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minfo->ram_shared *= 1024UL;
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unsigned long minfo->ram_used;
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if (BEGINS_WITH(ctx->memory_used_method, "memavailable")) {
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minfo->ram_used = minfo->ram_total - minfo->ram_available;
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} else if (BEGINS_WITH(ctx->memory_used_method, "classical")) {
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minfo->ram_used = minfo->ram_total - minfo->ram_free - minfo->ram_buffers - minfo->ram_cached;
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} else {
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die("Unexpected value: memory_used_method = %s", ctx->memory_used_method);
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}
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if (ctx->threshold_degraded) {
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const unsigned long threshold = memory_absolute(ctx->threshold_degraded, minfo->ram_total);
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if (minfo->ram_available < threshold) {
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output_color = "color_degraded";
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}
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}
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if (ctx->threshold_critical) {
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const unsigned long threshold = memory_absolute(ctx->threshold_critical, minfo->ram_total);
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if (minfo->ram_available < threshold) {
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minfo->output_color = "color_bad";
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}
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}
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error:
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OUTPUT_FULL_TEXT("can't read memory");
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fputs("i3status: Cannot read system memory using /proc/meminfo\n", stderr);
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#elif defined(__OpenBSD__)
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int mib [] = { CTL_VM, VM_UVMEXP };
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struct uvmexp our_uvmexp;
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size_t size = sizeof (our_uvmexp);
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if (sysctl (mib, 2, &our_uvmexp, &size, NULL, 0) < 0) {
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OUTPUT_FULL_TEXT("");
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fputs("i3status: cannot get memory info!\n", stderr);
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return;
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}
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minfo->ram_total = page2mbyte(our_uvmexp.npages);
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minfo->ram_free = page2mbyte(our_uvmexp.free + our_uvmexp.inactive);
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minfo->ram_used = page2mbyte(our_uvmexp.npages - our_uvmexp.free - our_uvmexp.inactive);
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minfo->ram_available = minfo->ram_free;
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minfo->ram_buffers = 0;
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minfo->ram_cached = 0;
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minfo->ram_shared = 0;
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minfo->output_color = NULL;
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#else
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OUTPUT_FULL_TEXT("");
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fputs("i3status: Memory status information is not supported on this system\n", stderr);
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#endif
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}
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void print_formatted_memory(struct print_mem_info *minfo, memory_ctx_t *ctx) {
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char *outwalk = ctx->buf;
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@ -153,165 +248,8 @@ void print_formatted_memory(struct print_mem_info *minfo, memory_ctx_t *ctx) {
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}
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void print_memory(memory_ctx_t *ctx) {
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char *outwalk = ctx->buf;
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#if defined(__linux__)
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const char *selected_format = ctx->format;
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const char *output_color = NULL;
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int unread_fields = 6;
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unsigned long ram_total;
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unsigned long ram_free;
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unsigned long ram_available;
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unsigned long ram_buffers;
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unsigned long ram_cached;
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unsigned long ram_shared;
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FILE *file = fopen("/proc/meminfo", "r");
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if (!file) {
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goto error;
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}
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for (char line[128]; fgets(line, sizeof line, file);) {
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if (BEGINS_WITH(line, "MemTotal:")) {
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ram_total = strtoul(line + strlen("MemTotal:"), NULL, 10);
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} else if (BEGINS_WITH(line, "MemFree:")) {
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ram_free = strtoul(line + strlen("MemFree:"), NULL, 10);
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} else if (BEGINS_WITH(line, "MemAvailable:")) {
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ram_available = strtoul(line + strlen("MemAvailable:"), NULL, 10);
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} else if (BEGINS_WITH(line, "Buffers:")) {
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ram_buffers = strtoul(line + strlen("Buffers:"), NULL, 10);
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} else if (BEGINS_WITH(line, "Cached:")) {
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ram_cached = strtoul(line + strlen("Cached:"), NULL, 10);
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} else if (BEGINS_WITH(line, "Shmem:")) {
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ram_shared = strtoul(line + strlen("Shmem:"), NULL, 10);
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} else {
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continue;
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}
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if (--unread_fields == 0) {
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break;
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}
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}
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fclose(file);
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if (unread_fields > 0) {
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goto error;
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}
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// Values are in kB, convert them to B.
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ram_total *= 1024UL;
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ram_free *= 1024UL;
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ram_available *= 1024UL;
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ram_buffers *= 1024UL;
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ram_cached *= 1024UL;
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ram_shared *= 1024UL;
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unsigned long ram_used;
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if (BEGINS_WITH(ctx->memory_used_method, "memavailable")) {
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ram_used = ram_total - ram_available;
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} else if (BEGINS_WITH(ctx->memory_used_method, "classical")) {
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ram_used = ram_total - ram_free - ram_buffers - ram_cached;
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} else {
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die("Unexpected value: memory_used_method = %s", ctx->memory_used_method);
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}
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if (ctx->threshold_degraded) {
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const unsigned long threshold = memory_absolute(ctx->threshold_degraded, ram_total);
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if (ram_available < threshold) {
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output_color = "color_degraded";
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}
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}
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if (ctx->threshold_critical) {
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const unsigned long threshold = memory_absolute(ctx->threshold_critical, ram_total);
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if (ram_available < threshold) {
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output_color = "color_bad";
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}
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}
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if (output_color) {
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START_COLOR(output_color);
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if (ctx->format_degraded)
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selected_format = ctx->format_degraded;
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}
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char string_ram_total[STRING_SIZE];
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char string_ram_used[STRING_SIZE];
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char string_ram_free[STRING_SIZE];
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char string_ram_available[STRING_SIZE];
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char string_ram_shared[STRING_SIZE];
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char string_percentage_free[STRING_SIZE];
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char string_percentage_available[STRING_SIZE];
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char string_percentage_used[STRING_SIZE];
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char string_percentage_shared[STRING_SIZE];
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print_bytes_human(string_ram_total, ram_total, ctx->unit, ctx->decimals);
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print_bytes_human(string_ram_used, ram_used, ctx->unit, ctx->decimals);
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print_bytes_human(string_ram_free, ram_free, ctx->unit, ctx->decimals);
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print_bytes_human(string_ram_available, ram_available, ctx->unit, ctx->decimals);
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print_bytes_human(string_ram_shared, ram_shared, ctx->unit, ctx->decimals);
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print_percentage(string_percentage_free, 100.0 * ram_free / ram_total);
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print_percentage(string_percentage_available, 100.0 * ram_available / ram_total);
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print_percentage(string_percentage_used, 100.0 * ram_used / ram_total);
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print_percentage(string_percentage_shared, 100.0 * ram_shared / ram_total);
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placeholder_t placeholders[] = {
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{.name = "%total", .value = string_ram_total},
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{.name = "%used", .value = string_ram_used},
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{.name = "%free", .value = string_ram_free},
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{.name = "%available", .value = string_ram_available},
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{.name = "%shared", .value = string_ram_shared},
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{.name = "%percentage_free", .value = string_percentage_free},
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{.name = "%percentage_available", .value = string_percentage_available},
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{.name = "%percentage_used", .value = string_percentage_used},
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{.name = "%percentage_shared", .value = string_percentage_shared}};
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const size_t num = sizeof(placeholders) / sizeof(placeholder_t);
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char *formatted = format_placeholders(selected_format, &placeholders[0], num);
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OUTPUT_FORMATTED;
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free(formatted);
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if (output_color)
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END_COLOR;
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OUTPUT_FULL_TEXT(ctx->buf);
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return;
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error:
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OUTPUT_FULL_TEXT("can't read memory");
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fputs("i3status: Cannot read system memory using /proc/meminfo\n", stderr);
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#elif defined(__OpenBSD__)
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struct print_mem_info minfo;
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int mib [] = { CTL_VM, VM_UVMEXP };
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struct uvmexp our_uvmexp;
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size_t size = sizeof (our_uvmexp);
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if (sysctl (mib, 2, &our_uvmexp, &size, NULL, 0) < 0) {
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OUTPUT_FULL_TEXT("");
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fputs("i3status: cannot get memory info!\n", stderr);
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return;
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}
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/*
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OUTPUT_FULL_TEXT("");
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fprintf(stderr, "i3status: used memory=%d\n", ((our_uvmexp.npages - our_uvmexp.free - our_uvmexp.inactive) * getpagesize()) >> 20);
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*/
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minfo.ram_total = page2mbyte(our_uvmexp.npages);
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minfo.ram_free = page2mbyte(our_uvmexp.free + our_uvmexp.inactive);
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minfo.ram_used = page2mbyte(our_uvmexp.npages - our_uvmexp.free - our_uvmexp.inactive);
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minfo.ram_available = minfo.ram_free;
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minfo.ram_buffers = 0;
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minfo.ram_cached = 0;
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minfo.ram_shared = 0;
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minfo.output_color = NULL;
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get_memory_info(&minfo, ctx);
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print_formatted_memory(&minfo, ctx);
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#else
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OUTPUT_FULL_TEXT("");
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fputs("i3status: Memory status information is not supported on this system\n", stderr);
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#endif
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}
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