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-rw-r--r--mesalib/src/gallium/auxiliary/hud/hud_cpu.c166
1 files changed, 166 insertions, 0 deletions
diff --git a/mesalib/src/gallium/auxiliary/hud/hud_cpu.c b/mesalib/src/gallium/auxiliary/hud/hud_cpu.c
new file mode 100644
index 000000000..ce98115d5
--- /dev/null
+++ b/mesalib/src/gallium/auxiliary/hud/hud_cpu.c
@@ -0,0 +1,166 @@
+/**************************************************************************
+ *
+ * Copyright 2013 Marek Olšák <maraeo@gmail.com>
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+/* This file contains code for reading CPU load for displaying on the HUD.
+ */
+
+#include "hud/hud_private.h"
+#include "os/os_time.h"
+#include "util/u_memory.h"
+#include <stdio.h>
+#include <inttypes.h>
+
+static boolean
+get_cpu_stats(unsigned cpu_index, uint64_t *busy_time, uint64_t *total_time)
+{
+ char cpuname[32];
+ char line[1024];
+ FILE *f;
+
+ if (cpu_index == ALL_CPUS)
+ strcpy(cpuname, "cpu");
+ else
+ sprintf(cpuname, "cpu%u", cpu_index);
+
+ f = fopen("/proc/stat", "r");
+ if (!f)
+ return FALSE;
+
+ while (!feof(f) && fgets(line, sizeof(line), f)) {
+ if (strstr(line, cpuname) == line) {
+ uint64_t v[12];
+ int i, num;
+
+ num = sscanf(line,
+ "%s %"PRIu64" %"PRIu64" %"PRIu64" %"PRIu64" %"PRIu64
+ " %"PRIu64" %"PRIu64" %"PRIu64" %"PRIu64" %"PRIu64
+ " %"PRIu64" %"PRIu64"",
+ cpuname, &v[0], &v[1], &v[2], &v[3], &v[4], &v[5],
+ &v[6], &v[7], &v[8], &v[9], &v[10], &v[11]);
+ if (num < 5) {
+ fclose(f);
+ return FALSE;
+ }
+
+ /* user + nice + system */
+ *busy_time = v[0] + v[1] + v[2];
+ *total_time = *busy_time;
+
+ /* ... + idle + iowait + irq + softirq + ... */
+ for (i = 3; i < num-1; i++) {
+ *total_time += v[i];
+ }
+ fclose(f);
+ return TRUE;
+ }
+ }
+ fclose(f);
+ return FALSE;
+}
+
+struct cpu_info {
+ unsigned cpu_index;
+ uint64_t last_cpu_busy, last_cpu_total, last_time;
+};
+
+static void
+query_cpu_load(struct hud_graph *gr)
+{
+ struct cpu_info *info = gr->query_data;
+ uint64_t now = os_time_get();
+
+ if (info->last_time) {
+ if (info->last_time + gr->pane->period <= now) {
+ uint64_t cpu_busy, cpu_total, cpu_load;
+
+ get_cpu_stats(info->cpu_index, &cpu_busy, &cpu_total);
+
+ cpu_load = (cpu_busy - info->last_cpu_busy) * 100 /
+ (double)(cpu_total - info->last_cpu_total);
+ hud_graph_add_value(gr, cpu_load);
+
+ info->last_cpu_busy = cpu_busy;
+ info->last_cpu_total = cpu_total;
+ info->last_time = now;
+ }
+ }
+ else {
+ /* initialize */
+ info->last_time = now;
+ get_cpu_stats(info->cpu_index, &info->last_cpu_busy,
+ &info->last_cpu_total);
+ }
+}
+
+void
+hud_cpu_graph_install(struct hud_pane *pane, unsigned cpu_index)
+{
+ struct hud_graph *gr;
+ struct cpu_info *info;
+ uint64_t busy, total;
+
+ /* see if the cpu exists */
+ if (cpu_index != ALL_CPUS && !get_cpu_stats(cpu_index, &busy, &total)) {
+ return;
+ }
+
+ gr = CALLOC_STRUCT(hud_graph);
+ if (!gr)
+ return;
+
+ if (cpu_index == ALL_CPUS)
+ strcpy(gr->name, "cpu");
+ else
+ sprintf(gr->name, "cpu%u", cpu_index);
+
+ gr->query_data = CALLOC_STRUCT(cpu_info);
+ if (!gr->query_data) {
+ FREE(gr);
+ return;
+ }
+
+ gr->query_new_value = query_cpu_load;
+ gr->free_query_data = free;
+
+ info = gr->query_data;
+ info->cpu_index = cpu_index;
+
+ hud_pane_add_graph(pane, gr);
+ hud_pane_set_max_value(pane, 100);
+}
+
+int
+hud_get_num_cpus(void)
+{
+ uint64_t busy, total;
+ int i = 0;
+
+ while (get_cpu_stats(i, &busy, &total))
+ i++;
+
+ return i;
+}