diff options
| -rw-r--r-- | README | 1 | ||||
| -rw-r--r-- | components/swap.c | 90 |
2 files changed, 84 insertions, 7 deletions
@@ -64,4 +64,3 @@ The following functions are not portable at the moment: - wifi_{perc,essid} - cpu_{perc,iowait} - entropy -- swap_{free,perc,total,used} diff --git a/components/swap.c b/components/swap.c index fe779db..f6f8993 100644 --- a/components/swap.c +++ b/components/swap.c @@ -1,11 +1,11 @@ /* See LICENSE file for copyright and license details. */ -#if defined(__linux__) - #include <errno.h> - #include <stdio.h> - #include <string.h> +#include <errno.h> +#include <stdio.h> +#include <string.h> - #include "../util.h" +#include "../util.h" +#if defined(__linux__) static size_t pread(const char *path, char *buf, size_t bufsiz) { @@ -118,5 +118,83 @@ return bprintf("%f", (float)(total - free - cached) / 1024 / 1024); } #elif defined(__OpenBSD__) - /* unimplemented */ + #include <stdlib.h> + #include <sys/param.h> /* dbtob */ + #include <sys/swap.h> + #include <sys/types.h> + #include <unistd.h> + + #define dbtoqb(b) dbtob((int64_t)(b)) + + static void + getstats(int *total, int *used) + { + struct swapent *sep, *fsep; + int rnswap, nswap, i; + + nswap = swapctl(SWAP_NSWAP, 0, 0); + if (nswap < 1) + fprintf(stderr, "swaptctl 'SWAP_NSWAP': %s\n", strerror(errno)); + + fsep = sep = calloc(nswap, sizeof(*sep)); + if (sep == NULL) + fprintf(stderr, "calloc 'nswap': %s\n", strerror(errno)); + + rnswap = swapctl(SWAP_STATS, (void *)sep, nswap); + if (rnswap < 0) + fprintf(stderr, "swapctl 'SWAP_STATA': %s\n", strerror(errno)); + + if (nswap != rnswap) + fprintf(stderr, "SWAP_STATS != SWAP_NSWAP\n"); + + *total = 0; + *used = 0; + + for (i = 0; i < rnswap; i++) { + *total += dbtoqb(sep->se_nblks); + *used += dbtoqb(sep->se_inuse); + } + + free(fsep); + } + + const char * + swap_free(void) + { + int total, used; + + getstats(&total, &used); + + return bprintf("%f", (float)(total - used) / 1024 / 1024 / 1024); + } + + const char * + swap_perc(void) + { + int total, used; + + getstats(&total, &used); + + return bprintf("%d", 100 * used / total); + } + + const char * + swap_total(void) + { + int total, used; + + getstats(&total, &used); + + return bprintf("%f", (float)total / 1024 / 1024 / 1024); + } + + const char * + swap_used(void) + { + int total, used; + + getstats(&total, &used); + + return bprintf("%f", (float)used / 1024 / 1024 / 1024); + } #endif |