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Major code cleanups, we now use open () and read ().

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This commit is contained in:
Martin Baulig
1998-08-16 13:37:14 +00:00
parent 486cc220c4
commit 36657db940
6 changed files with 162 additions and 49 deletions
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65
sysdeps/linux/swap.c
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@@ -27,49 +27,76 @@
static unsigned long _glibtop_sysdeps_swap =
(1 << GLIBTOP_SWAP_TOTAL) + (1 << GLIBTOP_SWAP_USED) +
(1 << GLIBTOP_SWAP_FREE) + (1 << GLIBTOP_SWAP_PAGEIN) +
(1 << GLIBTOP_SWAP_PAGEOUT);
(1 << GLIBTOP_SWAP_FREE);
static unsigned long _glibtop_sysdeps_swap_paging =
(1 << GLIBTOP_SWAP_PAGEIN) + (1 << GLIBTOP_SWAP_PAGEOUT);
/* Init function. */
void
glibtop_init_swap_s (glibtop *server)
{
server->sysdeps.swap = _glibtop_sysdeps_swap;
server->sysdeps.swap = _glibtop_sysdeps_swap |
_glibtop_sysdeps_swap_paging;
}
/* Provides information about swap usage. */
#define FILENAME "/proc/meminfo"
#define MEMINFO "/proc/meminfo"
#define PROC_STAT "/proc/stat"
void
glibtop_get_swap_s (glibtop *server, glibtop_swap *buf)
{
char buffer [BUFSIZ+1], *ptr;
char buffer [BUFSIZ], *p;
int fd, len;
FILE *f;
glibtop_init_s (&server, GLIBTOP_SYSDEPS_SWAP, 0);
memset (buf, 0, sizeof (glibtop_swap));
fd = open (MEMINFO, O_RDONLY);
if (fd < 0)
glibtop_error_io_r (server, "open (%s)", MEMINFO);
len = read (fd, buffer, BUFSIZ-1);
if (len < 0)
glibtop_error_io_r (server, "read (%s)", MEMINFO);
close (fd);
buffer [len] = '\0';
p = skip_line (buffer);
p = skip_line (buffer);
p = skip_token (p); /* "Swap:" */
buf->total = strtoul (p, &p, 0);
buf->used = strtoul (p, &p, 0);
buf->free = strtoul (p, &p, 0);
buf->flags = _glibtop_sysdeps_swap;
f = fopen ("/proc/meminfo", "r");
if (!f) return;
fd = open (PROC_STAT, O_RDONLY);
if (fd < 0)
glibtop_error_io_r (server, "open (%s)", PROC_STAT);
fscanf (f, "%*[^\n]\n%*[^\n]\nSwap: %Lu %Lu %Lu\n",
&buf->total, &buf->used, &buf->free);
len = read (fd, buffer, BUFSIZ-1);
if (len < 0)
glibtop_error_io_r (server, "read (%s)", PROC_STAT);
fclose (f);
close (fd);
fd = open ("/proc/stat", O_RDONLY);
len = read (fd, buffer, BUFSIZ);
close (fd);
buffer [len] = '\0';
ptr = strstr (buffer, "\nswap");
if (ptr == NULL) return;
sscanf (ptr, "\nSwap: %Lu %Lu\n",
&buf->pagein, &buf->pageout);
p = strstr (buffer, "\nswap");
if (p == NULL) return;
p = skip_token (p);
buf->pagein = strtoul (p, &p, 0);
buf->pageout = strtoul (p, &p, 0);
buf->flags |= _glibtop_sysdeps_swap_paging;
}