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authorYaniv Kamay <ykamay@redhat.com>2009-09-19 21:25:46 +0300
committerYaniv Kamay <ykamay@redhat.com>2009-10-14 15:06:41 +0200
commitc1b79eb035fa158fb2ac3bc8e559809611070016 (patch)
tree3348dd749a700dedf87c9b16fe8be77c62928df8 /tools/reds_stat.c
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Diffstat (limited to 'tools/reds_stat.c')
-rw-r--r--tools/reds_stat.c132
1 files changed, 132 insertions, 0 deletions
diff --git a/tools/reds_stat.c b/tools/reds_stat.c
new file mode 100644
index 00000000..76541579
--- /dev/null
+++ b/tools/reds_stat.c
@@ -0,0 +1,132 @@
+/*
+ Copyright (C) 2009 Red Hat, Inc.
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation; either version 2 of
+ the License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#define _GNU_SOURCE
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include "reds_stat.h"
+
+#define TAB_LEN 4
+#define VALUE_TABS 7
+#define INVALID_STAT_REF (~(uint32_t)0)
+
+static RedsStat *reds_stat = NULL;
+static uint64_t *values = NULL;
+
+void print_stat_tree(int32_t node_index, int depth)
+{
+ StatNode *node = &reds_stat->nodes[node_index];
+ int i;
+
+ if ((node->flags & STAT_NODE_MASK_SHOW) == STAT_NODE_MASK_SHOW) {
+ printf("%*s%s", depth * TAB_LEN, "", node->name);
+ if (node->flags & STAT_NODE_FLAG_VALUE) {
+ printf(":%*s%llu (%llu)\n", (VALUE_TABS - depth) * TAB_LEN - strlen(node->name) - 1, "",
+ node->value, node->value - values[node_index]);
+ values[node_index] = node->value;
+ } else {
+ printf("\n");
+ if (node->first_child_index != INVALID_STAT_REF) {
+ print_stat_tree(node->first_child_index, depth + 1);
+ }
+ }
+ }
+ if (node->next_sibling_index != INVALID_STAT_REF) {
+ print_stat_tree(node->next_sibling_index, depth);
+ }
+}
+
+int main(int argc, char **argv)
+{
+ char *shm_name;
+ pid_t kvm_pid;
+ uint64_t *val;
+ uint32_t num_of_nodes = 0;
+ size_t shm_size;
+ size_t shm_old_size;
+ int shm_name_len;
+ int ret = -1;
+ int fd;
+
+ if (argc != 2 || !(kvm_pid = atoi(argv[1]))) {
+ printf("usage: reds_stat [qemu_pid] (e.g. `pgrep qemu`)\n");
+ return -1;
+ }
+ shm_name_len = strlen(REDS_STAT_SHM_NAME) + strlen(argv[1]);
+ if (!(shm_name = (char *)malloc(shm_name_len))) {
+ perror("malloc");
+ return -1;
+ }
+ snprintf(shm_name, shm_name_len, REDS_STAT_SHM_NAME, kvm_pid);
+ if ((fd = shm_open(shm_name, O_RDONLY, 0444)) == -1) {
+ perror("shm_open");
+ free(shm_name);
+ return -1;
+ }
+ shm_size = sizeof(RedsStat);
+ reds_stat = mmap(NULL, shm_size, PROT_READ, MAP_SHARED, fd, 0);
+ if (reds_stat == (RedsStat *)MAP_FAILED) {
+ perror("mmap");
+ goto error1;
+ }
+ if (reds_stat->magic != REDS_STAT_MAGIC) {
+ printf("bad magic %u\n", reds_stat->magic);
+ goto error2;
+ }
+ if (reds_stat->version != REDS_STAT_VERSION) {
+ printf("bad version %u\n", reds_stat->version);
+ goto error2;
+ }
+ while (1) {
+ system("clear");
+ printf("spice statistics\n\n");
+ if (num_of_nodes != reds_stat->num_of_nodes) {
+ num_of_nodes = reds_stat->num_of_nodes;
+ shm_old_size = shm_size;
+ shm_size = sizeof(RedsStat) + num_of_nodes * sizeof(StatNode);
+ reds_stat = mremap(reds_stat, shm_old_size, shm_size, MREMAP_MAYMOVE);
+ if (reds_stat == (RedsStat *)MAP_FAILED) {
+ perror("mremap");
+ goto error3;
+ }
+ values = (uint64_t *)realloc(values, num_of_nodes * sizeof(uint64_t));
+ if (values == NULL) {
+ perror("realloc");
+ goto error3;
+ }
+ memset(values, 0, num_of_nodes * sizeof(uint64_t));
+ }
+ print_stat_tree(reds_stat->root_index, 0);
+ sleep(1);
+ }
+ ret = 0;
+
+error3:
+ free(values);
+error2:
+ munmap(reds_stat, shm_size);
+error1:
+ shm_unlink(shm_name);
+ free(shm_name);
+ return ret;
+}
+