[Mesa-dev] [PATCH 4/4] gallium/hud: add monitoring of API thread busy status

[Marek Olšák]

From: Marek Olšák <marek.olsak at amd.com>

---
 src/gallium/auxiliary/hud/hud_context.c |  3 ++
 src/gallium/auxiliary/hud/hud_cpu.c     | 60 +++++++++++++++++++++++++++++++++
 src/gallium/auxiliary/hud/hud_private.h |  1 +
 3 files changed, 64 insertions(+)

diff --git a/src/gallium/auxiliary/hud/hud_context.c b/src/gallium/auxiliary/hud/hud_context.c
index a635797..5354db7 100644
--- a/src/gallium/auxiliary/hud/hud_context.c
+++ b/src/gallium/auxiliary/hud/hud_context.c
@@ -1110,20 +1110,23 @@ hud_parse_env_var(struct hud_context *hud, const char *env)
       /* IF YOU CHANGE THIS, UPDATE print_help! */
       if (strcmp(name, "fps") == 0) {
          hud_fps_graph_install(pane);
       }
       else if (strcmp(name, "cpu") == 0) {
          hud_cpu_graph_install(pane, ALL_CPUS);
       }
       else if (sscanf(name, "cpu%u%s", &i, s) == 1) {
          hud_cpu_graph_install(pane, i);
       }
+      else if (strcmp(name, "API-thread-busy") == 0) {
+         hud_api_thread_busy_install(pane);
+      }
 #if HAVE_GALLIUM_EXTRA_HUD
       else if (sscanf(name, "nic-rx-%s", arg_name) == 1) {
          hud_nic_graph_install(pane, arg_name, NIC_DIRECTION_RX);
       }
       else if (sscanf(name, "nic-tx-%s", arg_name) == 1) {
          hud_nic_graph_install(pane, arg_name, NIC_DIRECTION_TX);
       }
       else if (sscanf(name, "nic-rssi-%s", arg_name) == 1) {
          hud_nic_graph_install(pane, arg_name, NIC_RSSI_DBM);
          pane->type = PIPE_DRIVER_QUERY_TYPE_DBM;
diff --git a/src/gallium/auxiliary/hud/hud_cpu.c b/src/gallium/auxiliary/hud/hud_cpu.c
index c65444e..a8d97b8 100644
--- a/src/gallium/auxiliary/hud/hud_cpu.c
+++ b/src/gallium/auxiliary/hud/hud_cpu.c
@@ -23,20 +23,21 @@
  * 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 "os/os_thread.h"
 #include "util/u_memory.h"
 #include <stdio.h>
 #include <inttypes.h>
 #ifdef PIPE_OS_WINDOWS
 #include <windows.h>
 #endif
 
 
 #ifdef PIPE_OS_WINDOWS
 
@@ -223,10 +224,69 @@ int
 hud_get_num_cpus(void)
 {
    uint64_t busy, total;
    int i = 0;
 
    while (get_cpu_stats(i, &busy, &total))
       i++;
 
    return i;
 }
+
+struct thread_info {
+   int64_t last_time;
+   int64_t last_thread_time;
+};
+
+static void
+query_api_thread_busy_status(struct hud_graph *gr)
+{
+   struct thread_info *info = gr->query_data;
+   int64_t now = os_time_get_nano();
+
+   if (info->last_time) {
+      if (info->last_time + gr->pane->period*1000 <= now) {
+         int64_t thread_now = pipe_current_thread_get_time_nano();
+
+         hud_graph_add_value(gr,
+                             (thread_now - info->last_thread_time) * 100 /
+                             (now - info->last_time));
+
+         info->last_thread_time = thread_now;
+         info->last_time = now;
+      }
+   } else {
+      /* initialize */
+      info->last_time = now;
+      info->last_thread_time = pipe_current_thread_get_time_nano();
+   }
+}
+
+void
+hud_api_thread_busy_install(struct hud_pane *pane)
+{
+   struct hud_graph *gr;
+
+   gr = CALLOC_STRUCT(hud_graph);
+   if (!gr)
+      return;
+
+   strcpy(gr->name, "API-thread-busy");
+
+   gr->query_data = CALLOC_STRUCT(thread_info);
+   if (!gr->query_data) {
+      FREE(gr);
+      return;
+   }
+
+   gr->query_new_value = query_api_thread_busy_status;
+
+   /* Don't use free() as our callback as that messes up Gallium's
+    * memory debugger.  Use simple free_query_data() wrapper.
+    */
+   gr->free_query_data = free_query_data;
+
+   hud_graph_set_dump_file(gr);
+
+   hud_pane_add_graph(pane, gr);
+   hud_pane_set_max_value(pane, 100);
+}
diff --git a/src/gallium/auxiliary/hud/hud_private.h b/src/gallium/auxiliary/hud/hud_private.h
index b23439e..1d06e03 100644
--- a/src/gallium/auxiliary/hud/hud_private.h
+++ b/src/gallium/auxiliary/hud/hud_private.h
@@ -86,20 +86,21 @@ void hud_graph_add_value(struct hud_graph *gr, uint64_t value);
 
 /* graphs/queries */
 struct hud_batch_query_context;
 
 #define ALL_CPUS ~0 /* optionally set as cpu_index */
 
 int hud_get_num_cpus(void);
 
 void hud_fps_graph_install(struct hud_pane *pane);
 void hud_cpu_graph_install(struct hud_pane *pane, unsigned cpu_index);
+void hud_api_thread_busy_install(struct hud_pane *pane);
 void hud_pipe_query_install(struct hud_batch_query_context **pbq,
                             struct hud_pane *pane, struct pipe_context *pipe,
                             const char *name, unsigned query_type,
                             unsigned result_index,
                             uint64_t max_value,
                             enum pipe_driver_query_type type,
                             enum pipe_driver_query_result_type result_type,
                             unsigned flags);
 boolean hud_driver_query_install(struct hud_batch_query_context **pbq,
                                  struct hud_pane *pane,
-- 
2.7.4