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use sigar_iodev_get

This commit is contained in:
Doug MacEachern 2008-03-16 02:21:46 +00:00
parent 26d071a6cb
commit 70bfdee076
1 changed files with 9 additions and 130 deletions
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139
src/os/linux/linux_sigar.c
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@ -1214,147 +1214,26 @@ int sigar_file_system_list_get(sigar_t *sigar,
return SIGAR_OK;
}
#define FSDEV_PREFIX "/dev/"
#define FSDEV_IS_DEV(dev) strnEQ(dev, FSDEV_PREFIX, 5)
#define ST_MAJOR(sb) major((sb).st_rdev)
#define ST_MINOR(sb) minor((sb).st_rdev)
typedef struct {
char name[256];
int is_partition;
sigar_disk_usage_t disk;
} iodev_t;
static iodev_t *get_fsdev(sigar_t *sigar,
const char *dirname)
{
sigar_cache_entry_t *entry;
struct stat sb;
sigar_uint64_t id;
sigar_file_system_list_t fslist;
int i, status, is_dev=0;
int debug = SIGAR_LOG_IS_DEBUG(sigar);
char dev_name[SIGAR_FS_NAME_LEN];
if (!sigar->fsdev) {
sigar->fsdev = sigar_cache_new(15);
}
if (*dirname != '/') {
snprintf(dev_name, sizeof(dev_name),
FSDEV_PREFIX "%s", dirname);
dirname = dev_name;
is_dev = 1;
}
else if (FSDEV_IS_DEV(dirname)) {
is_dev = 1;
}
if (stat(dirname, &sb) < 0) {
if (debug) {
sigar_log_printf(sigar, SIGAR_LOG_DEBUG,
"[fsdev] stat(%s) failed",
dirname);
}
return NULL;
}
id = SIGAR_FSDEV_ID(sb);
entry = sigar_cache_get(sigar->fsdev, id);
if (entry->value != NULL) {
return (iodev_t *)entry->value;
}
if (is_dev) {
iodev_t *iodev;
entry->value = iodev = malloc(sizeof(*iodev));
SIGAR_ZERO(iodev);
SIGAR_SSTRCPY(iodev->name, dirname);
if (debug) {
sigar_log_printf(sigar, SIGAR_LOG_DEBUG,
"[fsdev] %s is_dev=true", dirname);
}
return iodev;
}
status = sigar_file_system_list_get(sigar, &fslist);
if (status != SIGAR_OK) {
sigar_log_printf(sigar, SIGAR_LOG_DEBUG,
"[fsdev] file_system_list failed: %s",
sigar_strerror(sigar, status));
return NULL;
}
for (i=0; i<fslist.number; i++) {
sigar_file_system_t *fsp = &fslist.data[i];
if (fsp->type == SIGAR_FSTYPE_LOCAL_DISK) {
int retval = stat(fsp->dir_name, &sb);
sigar_cache_entry_t *ent;
if (retval < 0) {
if (debug) {
sigar_log_printf(sigar, SIGAR_LOG_DEBUG,
"[fsdev] inode stat(%s) failed",
fsp->dir_name);
}
return NULL; /* cant cache w/o inode */
}
ent = sigar_cache_get(sigar->fsdev, SIGAR_FSDEV_ID(sb));
if (ent->value) {
continue; /* already cached */
}
if (FSDEV_IS_DEV(fsp->dev_name)) {
iodev_t *iodev;
ent->value = iodev = malloc(sizeof(*iodev));
SIGAR_ZERO(iodev);
iodev->is_partition = 1;
SIGAR_SSTRCPY(iodev->name, fsp->dev_name);
if (debug) {
sigar_log_printf(sigar, SIGAR_LOG_DEBUG,
"[fsdev] map %s -> %s",
fsp->dir_name, iodev->name);
}
}
}
}
sigar_file_system_list_destroy(sigar, &fslist);
if (entry->value &&
(((iodev_t *)entry->value)->name[0] != '\0'))
{
return (iodev_t *)entry->value;
}
else {
return NULL;
}
}
static int get_iostat_sys(sigar_t *sigar,
const char *dirname,
sigar_disk_usage_t *disk,
iodev_t **iodev)
sigar_iodev_t **iodev)
{
char stat[1025], dev[1025];
char *name, *ptr, *fsdev;
int partition, status;
if (!(*iodev = get_fsdev(sigar, dirname))) {
if (!(*iodev = sigar_iodev_get(sigar, dirname))) {
return ENOENT;
}
name = fsdev = (*iodev)->name;
if (FSDEV_IS_DEV(name)) {
name += 5; /* strip "/dev/" */
if (SIGAR_NAME_IS_DEV(name)) {
name += SSTRLEN(SIGAR_DEV_PREFIX); /* strip "/dev/" */
}
while (!sigar_isdigit(*fsdev)) {
@ -1388,7 +1267,7 @@ static int get_iostat_sys(sigar_t *sigar,
static int get_iostat_proc_dstat(sigar_t *sigar,
const char *dirname,
sigar_disk_usage_t *disk,
iodev_t **iodev,
sigar_iodev_t **iodev,
sigar_disk_usage_t *device_usage)
{
FILE *fp;
@ -1399,7 +1278,7 @@ static int get_iostat_proc_dstat(sigar_t *sigar,
SIGAR_DISK_STATS_INIT(device_usage);
if (!(*iodev = get_fsdev(sigar, dirname))) {
if (!(*iodev = sigar_iodev_get(sigar, dirname))) {
return ENOENT;
}
@ -1494,14 +1373,14 @@ static int get_iostat_proc_dstat(sigar_t *sigar,
static int get_iostat_procp(sigar_t *sigar,
const char *dirname,
sigar_disk_usage_t *disk,
iodev_t **iodev)
sigar_iodev_t **iodev)
{
FILE *fp;
char buffer[1025];
char *ptr;
struct stat sb;
if (!(*iodev = get_fsdev(sigar, dirname))) {
if (!(*iodev = sigar_iodev_get(sigar, dirname))) {
return ENOENT;
}
@ -1561,7 +1440,7 @@ int sigar_disk_usage_get(sigar_t *sigar, const char *name,
sigar_disk_usage_t *disk)
{
int status;
iodev_t *iodev = NULL;
sigar_iodev_t *iodev = NULL;
sigar_disk_usage_t device_usage;
SIGAR_DISK_STATS_INIT(disk);