Add functions for measuring swap
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59ed3b6d8d
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1 changed files with 128 additions and 0 deletions
128
slstatus.c
128
slstatus.c
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@ -57,6 +57,10 @@ static char *ram_perc(void);
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static char *ram_used(void);
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static char *ram_used(void);
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static char *ram_total(void);
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static char *ram_total(void);
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static char *run_command(const char *cmd);
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static char *run_command(const char *cmd);
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static char *swap_free(void);
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static char *swap_perc(void);
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static char *swap_used(void);
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static char *swap_total(void);
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static char *temp(const char *file);
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static char *temp(const char *file);
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static char *uid(void);
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static char *uid(void);
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static char *uptime(void);
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static char *uptime(void);
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@ -417,6 +421,130 @@ run_command(const char *cmd)
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return smprintf("%s", buf);
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return smprintf("%s", buf);
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}
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}
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static char *
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swap_free(void)
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{
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long free;
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FILE *fp;
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char buf[2048];
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size_t bytes_read;
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char *match;
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fp = fopen("/proc/meminfo", "r");
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if (fp == NULL) {
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warn("Failed to open file /proc/meminfo");
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return smprintf(UNKNOWN_STR);
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}
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bytes_read = fread(buf, sizeof(char), sizeof(buf), fp);
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buf[bytes_read] = '\0';
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fclose(fp);
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if (bytes_read == 0 || bytes_read == sizeof(buf)) {
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warn("Failed to read /proc/meminfo\n");
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return smprintf(UNKNOWN_STR);
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}
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match = strstr(buf, "SwapFree");
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sscanf(match, "SwapFree: %ld kB\n", &free);
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return smprintf("%f", (float)free / 1024 / 1024);
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}
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static char *
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swap_perc(void)
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{
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long total, free, cached;
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FILE *fp;
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char buf[2048];
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size_t bytes_read;
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char *match;
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fp = fopen("/proc/meminfo", "r");
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if (fp == NULL) {
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warn("Failed to open file /proc/meminfo");
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return smprintf(UNKNOWN_STR);
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}
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bytes_read = fread(buf, sizeof(char), sizeof(buf), fp);
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buf[bytes_read] = '\0';
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fclose(fp);
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if (bytes_read == 0 || bytes_read == sizeof(buf)) {
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warn("Failed to read /proc/meminfo\n");
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return smprintf(UNKNOWN_STR);
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}
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match = strstr(buf, "SwapCached");
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sscanf(match, "SwapCached: %ld kB\n", &cached);
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match = strstr(buf, "SwapTotal");
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sscanf(match, "SwapTotal: %ld kB\n", &total);
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match = strstr(buf, "SwapFree");
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sscanf(match, "SwapFree: %ld kB\n", &free);
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return smprintf("%d%%", 100 * (total - free - cached) / total);
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}
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static char *
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swap_total(void)
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{
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long total;
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FILE *fp;
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char buf[2048];
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size_t bytes_read;
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char *match;
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fp = fopen("/proc/meminfo", "r");
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if (fp == NULL) {
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warn("Failed to open file /proc/meminfo");
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return smprintf(UNKNOWN_STR);
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}
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bytes_read = fread(buf, sizeof(char), sizeof(buf), fp);
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buf[bytes_read] = '\0';
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fclose(fp);
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if (bytes_read == 0 || bytes_read == sizeof(buf)) {
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warn("Failed to read /proc/meminfo\n");
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return smprintf(UNKNOWN_STR);
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}
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match = strstr(buf, "SwapTotal");
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sscanf(match, "SwapTotal: %ld kB\n", &total);
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return smprintf("%f", (float)total / 1024 / 1024);
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}
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static char *
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swap_used(void)
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{
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long total, free, cached;
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FILE *fp;
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char buf[2048];
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size_t bytes_read;
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char *match;
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fp = fopen("/proc/meminfo", "r");
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if (fp == NULL) {
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warn("Failed to open file /proc/meminfo");
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return smprintf(UNKNOWN_STR);
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}
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bytes_read = fread(buf, sizeof(char), sizeof(buf), fp);
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buf[bytes_read] = '\0';
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fclose(fp);
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if (bytes_read == 0 || bytes_read == sizeof(buf)) {
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warn("Failed to read /proc/meminfo\n");
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return smprintf(UNKNOWN_STR);
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}
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match = strstr(buf, "SwapCached");
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sscanf(match, "SwapCached: %ld kB\n", &cached);
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match = strstr(buf, "SwapTotal");
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sscanf(match, "SwapTotal: %ld kB\n", &total);
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match = strstr(buf, "SwapFree");
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sscanf(match, "SwapFree: %ld kB\n", &free);
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return smprintf("%f", (float)(total - free - cached) / 1024 / 1024);
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}
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static char *
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static char *
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temp(const char *file)
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temp(const char *file)
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{
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{
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