[Libvirt-cim] [PATCH 3 of 3] Change behavior to get VCPU information from XML like other devices
Dan Smith
danms at us.ibm.com
Tue Jan 8 20:24:05 UTC 2008
# HG changeset patch
# User Dan Smith <danms at us.ibm.com>
# Date 1199827433 28800
# Node ID ebc8d09b3be6c1f1fe5b5a7ff865037298cd9f48
# Parent 3e5265023ddda5cfa24e7449c9f06bbd7dcaba5c
Change behavior to get VCPU information from XML like other devices
This is necessary for us to be able to show VCPU devices when a domain
is offline.
Signed-off-by: Dan Smith <danms at us.ibm.com>
diff -r 3e5265023ddd -r ebc8d09b3be6 libxkutil/device_parsing.c
--- a/libxkutil/device_parsing.c Tue Jan 08 13:23:53 2008 -0800
+++ b/libxkutil/device_parsing.c Tue Jan 08 13:23:53 2008 -0800
@@ -36,6 +36,7 @@
#include "../src/svpc_types.h"
#define DISK_XPATH (xmlChar *)"/domain/devices/disk"
+#define VCPU_XPATH (xmlChar *)"/domain/vcpu"
#define NET_XPATH (xmlChar *)"/domain/devices/interface"
#define EMU_XPATH (xmlChar *)"/domain/devices/emulator"
#define GRAPHICS_XPATH (xmlChar *)"/domain/devices/graphics"
@@ -239,6 +240,45 @@ static int parse_net_device(xmlNode *ino
return 0;
}
+static int parse_vcpu_device(xmlNode *node, struct virt_device **vdevs)
+{
+ struct virt_device *list = NULL;
+ char *count_str;
+ int count;
+ int i;
+
+ count_str = get_node_content(node);
+ if (count_str == NULL)
+ count = 1; /* Default to 1 VCPU if non specified */
+ else if (sscanf(count_str, "%i", &count) != 1)
+ count = 1; /* Default to 1 VCPU if garbage */
+
+ free(count_str);
+
+ list = calloc(count, sizeof(*list));
+ if (list == NULL)
+ goto err;
+
+ for (i = 0; i < count; i++) {
+ struct virt_device *vdev = &list[i];
+ struct vcpu_device *cdev = &vdev->dev.vcpu;
+
+ cdev->number = i;
+
+ vdev->type = VIRT_DEV_VCPU;
+ if (asprintf(&vdev->id, "%i", i) == -1)
+ vdev->id = NULL;
+ }
+
+ *vdevs = list;
+
+ return count;
+ err:
+ free(list);
+
+ return 0;
+}
+
static int parse_emu_device(xmlNode *node, struct virt_device **vdevs)
{
struct virt_device *vdev = NULL;
@@ -322,6 +362,8 @@ static int do_parse(xmlNodeSet *nsv, int
do_real_parse = &parse_net_device;
else if (type == VIRT_DEV_DISK)
do_real_parse = &parse_disk_device;
+ else if (type == VIRT_DEV_VCPU)
+ do_real_parse = parse_vcpu_device;
else if (type == VIRT_DEV_EMU)
do_real_parse = parse_emu_device;
else if (type == VIRT_DEV_GRAPHICS)
@@ -386,6 +428,8 @@ static int parse_devices(char *xml, stru
xpathstr = NET_XPATH;
else if (type == VIRT_DEV_DISK)
xpathstr = DISK_XPATH;
+ else if (type == VIRT_DEV_VCPU)
+ xpathstr = VCPU_XPATH;
else if (type == VIRT_DEV_EMU)
xpathstr = EMU_XPATH;
else if (type == VIRT_DEV_GRAPHICS)
@@ -446,9 +490,6 @@ struct virt_device *virt_device_dup(stru
dev->dev.mem.maxsize = _dev->dev.mem.maxsize;
} else if (dev->type == VIRT_DEV_VCPU) {
dev->dev.vcpu.number = _dev->dev.vcpu.number;
- dev->dev.vcpu.state = _dev->dev.vcpu.state;
- dev->dev.vcpu.cpuTime = _dev->dev.vcpu.cpuTime;
- dev->dev.vcpu.cpu = _dev->dev.vcpu.cpu;
} else if (dev->type == VIRT_DEV_EMU) {
DUP_FIELD(dev, _dev, dev.emu.path);
} else if (dev->type == VIRT_DEV_GRAPHICS) {
@@ -573,42 +614,17 @@ int get_mem_devices(virDomainPtr dom, st
int get_vcpu_devices(virDomainPtr dom, struct virt_device **list)
{
- int i, rc, ret, num_filled, num_vcpus;
- virDomainInfo dom_info;
- virVcpuInfoPtr vcpu_info = NULL;
- struct virt_device *ret_list = NULL;
-
- rc = virDomainGetInfo(dom, &dom_info);
- if (rc == -1) {
- ret = -1;
- goto out1;
- }
-
- num_vcpus = dom_info.nrVirtCpu;
- vcpu_info = calloc(num_vcpus, sizeof(virVcpuInfo));
- num_filled = virDomainGetVcpus(dom, vcpu_info, num_vcpus, NULL, 0);
- if (num_vcpus != num_filled) {
- ret = -1;
- goto out2;
- }
-
- ret_list = calloc(num_vcpus, sizeof(struct virt_device));
- for (i = 0; i < num_vcpus; i++) {
- ret_list[i].type = VIRT_DEV_VCPU;
- ret_list[i].dev.vcpu = vcpu_info[i];
- if (asprintf(&ret_list[i].id, "%d",
- vcpu_info[i].number) == -1) {
- ret = -1;
- free(ret_list);
- goto out2;
- }
- }
-
- ret = num_vcpus;
- *list = ret_list;
- out2:
- free(vcpu_info);
- out1:
+ char *xml;
+ int ret;
+
+ xml = virDomainGetXMLDesc(dom, 0);
+ if (xml == NULL)
+ return 0;
+
+ ret = parse_devices(xml, list, VIRT_DEV_VCPU);
+
+ free(xml);
+
return ret;
}
diff -r 3e5265023ddd -r ebc8d09b3be6 libxkutil/device_parsing.h
--- a/libxkutil/device_parsing.h Tue Jan 08 13:23:53 2008 -0800
+++ b/libxkutil/device_parsing.h Tue Jan 08 13:23:53 2008 -0800
@@ -49,6 +49,10 @@ struct mem_device {
uint64_t maxsize;
};
+struct vcpu_device {
+ uint32_t number;
+};
+
struct emu_device {
char *path;
};
@@ -72,7 +76,7 @@ struct virt_device {
struct disk_device disk;
struct net_device net;
struct mem_device mem;
- struct _virVcpuInfo vcpu;
+ struct vcpu_device vcpu;
struct emu_device emu;
struct graphics_device graphics;
} dev;
diff -r 3e5265023ddd -r ebc8d09b3be6 libxkutil/xml_parse_test.c
--- a/libxkutil/xml_parse_test.c Tue Jan 08 13:23:53 2008 -0800
+++ b/libxkutil/xml_parse_test.c Tue Jan 08 13:23:53 2008 -0800
@@ -14,6 +14,11 @@ static void print_u64(FILE *d, const cha
static void print_u64(FILE *d, const char *name, uint64_t val)
{
fprintf(d, "%-15s: %" PRIu64 "\n", name, val);
+}
+
+static void print_u32(FILE *d, const char *name, uint32_t val)
+{
+ fprintf(d, "%-15s: %" PRIu32 "\n", name, val);
}
static void print_os(struct domain *dom,
@@ -84,7 +89,7 @@ static void print_dev_vcpu(struct virt_d
static void print_dev_vcpu(struct virt_device *dev,
FILE *d)
{
- print_value(d, "Virtual CPU", "Present");
+ print_u32(d, "Virtual CPU", dev->dev.vcpu.number);
}
static void print_dev_emu(struct virt_device *dev,
diff -r 3e5265023ddd -r ebc8d09b3be6 libxkutil/xmlgen.c
--- a/libxkutil/xmlgen.c Tue Jan 08 13:23:53 2008 -0800
+++ b/libxkutil/xmlgen.c Tue Jan 08 13:23:53 2008 -0800
@@ -163,7 +163,7 @@ static char *net_to_xml(struct net_devic
return xml;
}
-static char *proc_to_xml(struct _virVcpuInfo *proc)
+static char *proc_to_xml(struct vcpu_device *proc)
{
return strdup("");
}
diff -r 3e5265023ddd -r ebc8d09b3be6 src/Virt_Device.c
--- a/src/Virt_Device.c Tue Jan 08 13:23:53 2008 -0800
+++ b/src/Virt_Device.c Tue Jan 08 13:23:53 2008 -0800
@@ -187,7 +187,7 @@ static CMPIInstance *mem_instance(const
}
static CMPIInstance *vcpu_instance(const CMPIBroker *broker,
- struct _virVcpuInfo *dev,
+ struct vcpu_device *dev,
const virDomainPtr dom,
const char *ns)
{
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