External/libvirt
1
0
Fork 0
mirror of https://gitlab.com/libvirt/libvirt.git synced 2025-01-08 22:15:21 +00:00
Code Issues Packages Projects Releases Wiki Activity

BSD: implement nodeGetMemoryStats

Browse Source 
Add a BSD implementation of nodeGetMemoryStats based
on sysctl(3).
This commit is contained in:
Roman Bogorodskiy 2014-01-03 22:35:50 +04:00 committed by Eric Blake
parent bcd0ac47d8
commit e7a65dc77c
1 changed files with 81 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

82
src/nodeinfo.c
View File

@ -96,7 +96,85 @@ appleFreebsdNodeGetMemorySize(unsigned long *memory)
return 0;
}
#endif
#endif /* defined(__FreeBSD__) || defined(__APPLE__) */
#ifdef __FreeBSD__
# define BSD_MEMORY_STATS_ALL 4
static int
freebsdNodeGetMemoryStats(virNodeMemoryStatsPtr params,
int *nparams)
{
size_t i, j = 0;
unsigned long pagesize = getpagesize() >> 10;
long bufpages;
size_t bufpages_size = sizeof(bufpages);
struct field_sysctl_map {
const char *field;
const char *sysctl_name;
} sysctl_map[] = {
{VIR_NODE_MEMORY_STATS_TOTAL, "vm.stats.vm.v_page_count"},
{VIR_NODE_MEMORY_STATS_FREE, "vm.stats.vm.v_free_count"},
{VIR_NODE_MEMORY_STATS_CACHED, "vm.stats.vm.v_cache_count"},
{NULL, NULL}
};
if ((*nparams) == 0) {
*nparams = BSD_MEMORY_STATS_ALL;
return 0;
}
if ((*nparams) != BSD_MEMORY_STATS_ALL) {
virReportInvalidArg(nparams,
_("nparams in %s must be %d"),
__FUNCTION__, BSD_MEMORY_STATS_ALL);
return -1;
}
for (i = 0; sysctl_map[i].field != NULL; i++) {
u_int value;
size_t value_size = sizeof(value);
virNodeMemoryStatsPtr param;
if (sysctlbyname(sysctl_map[i].sysctl_name, &value,
&value_size, NULL, 0) < 0) {
virReportSystemError(errno,
_("sysctl failed for '%s'"),
sysctl_map[i].sysctl_name);
return -1;
}
param = &params[j++];
if (virStrcpyStatic(param->field, sysctl_map[i].field) == NULL) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Field '%s' too long for destination"),
sysctl_map[i].field);
return -1;
}
param->value = (unsigned long long)value * pagesize;
}
{
virNodeMemoryStatsPtr param = &params[j++];
if (sysctlbyname("vfs.bufspace", &bufpages, &bufpages_size, NULL, 0) < 0) {
virReportSystemError(errno,
_("sysctl failed for '%s'"),
"vfs.bufspace");
return -1;
}
if (virStrcpyStatic(param->field, VIR_NODE_MEMORY_STATS_BUFFERS) == NULL) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Field '%s' too long for destination"),
VIR_NODE_MEMORY_STATS_BUFFERS);
return -1;
}
param->value = (unsigned long long)bufpages >> 10;
}
return 0;
}
#endif /* __FreeBSD__ */
#ifdef __linux__
# define CPUINFO_PATH "/proc/cpuinfo"
@ -1041,6 +1119,8 @@ int nodeGetMemoryStats(int cellNum ATTRIBUTE_UNUSED,
return ret;
}
#elif defined(__FreeBSD__)
return freebsdNodeGetMemoryStats(params, nparams);
#else
virReportError(VIR_ERR_NO_SUPPORT, "%s",
_("node memory stats not implemented on this platform"));