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[SIGAR-62] linux swap.page_{in,out} impl

This commit is contained in:
Doug MacEachern 2007-07-20 18:22:20 +00:00
parent fb7446d7f3
commit 585d510fb4
1 changed files with 29 additions and 1 deletions
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30
src/os/linux/linux_sigar.c
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@ -32,6 +32,7 @@
#define pageshift(x) ((x) << sigar->pagesize)
#define PROC_MEMINFO PROC_FS_ROOT "meminfo"
#define PROC_VMSTAT PROC_FS_ROOT "vmstat"
#define PROC_MTRR PROC_FS_ROOT "mtrr"
#define PROC_STAT PROC_FS_ROOT "stat"
#define PROC_UPTIME PROC_FS_ROOT "uptime"
@ -424,7 +425,7 @@ int sigar_mem_get(sigar_t *sigar, sigar_mem_t *mem)
int sigar_swap_get(sigar_t *sigar, sigar_swap_t *swap)
{
char buffer[BUFSIZ];
char buffer[BUFSIZ], *ptr;
/* XXX: we open/parse the same file here as sigar_mem_get */
int status = sigar_file2str(PROC_MEMINFO,
@ -440,6 +441,33 @@ int sigar_swap_get(sigar_t *sigar, sigar_swap_t *swap)
swap->page_in = swap->page_out = -1;
status = sigar_file2str(PROC_VMSTAT,
buffer, sizeof(buffer));
if (status == SIGAR_OK) {
/* 2.6+ kernel */
if ((ptr = strstr(buffer, "\npswpin"))) {
ptr = sigar_skip_token(ptr);
swap->page_in = sigar_strtoull(ptr);
ptr = sigar_skip_token(ptr);
swap->page_out = sigar_strtoull(ptr);
}
}
else {
/* 2.2, 2.4 kernels */
status = sigar_file2str(PROC_STAT,
buffer, sizeof(buffer));
if (status != SIGAR_OK) {
return status;
}
if ((ptr = strstr(buffer, "\nswap"))) {
ptr = sigar_skip_token(ptr);
swap->page_in = sigar_strtoull(ptr);
swap->page_out = sigar_strtoull(ptr);
}
}
return SIGAR_OK;
}