Adding PVAR for backfill queue size

Author: srini009

.gitmodules

@@ -1,9 +1,6 @@
 [submodule "Testing/driver/kwsys"]
 	path = Testing/driver/kwsys
 	url = https://github.com/mercury-hpc/kwsys.git
-[submodule "src/mchecksum"]
-	path = src/mchecksum
-	url = https://github.com/mercury-hpc/mchecksum.git
 [submodule "src/boost"]
 	path = src/boost
 	url = https://github.com/mercury-hpc/preprocessor.git

src/mchecksum

@@ -27,6 +27,9 @@
 #include "mercury_time.h"
 #include "mercury_error.h"
 
+/* PVAR profiling support */
+#include "mercury_prof_pvar_impl.h"
+
 #ifdef HG_HAS_SM_ROUTING
 #include <uuid/uuid.h>
 #endif
@@ -3153,9 +3156,13 @@ hg_core_trigger(struct hg_core_private_context *context, unsigned int timeout,
     unsigned int count = 0;
     hg_return_t ret = HG_SUCCESS;
 
+    HG_PROF_PVAR_UINT_COUNTER(hg_pvar_hg_backfill_queue_count);
     while (count < max_count) {
         struct hg_completion_entry *hg_completion_entry = NULL;
 
+        /* Set value of PVAR */
+        HG_PROF_PVAR_UINT_COUNTER_SET(hg_pvar_hg_backfill_queue_count, hg_atomic_get32(&context->backfill_queue_count));
+
         hg_completion_entry =
             hg_atomic_queue_pop_mc(context->completion_queue);
         if (!hg_completion_entry) {

src/mercury_core.c

@@ -99,6 +99,7 @@ hg_prof_pvar_init() {
     /*Initialize internal PVAR data structures*/
     pvar_table = hg_hash_table_new(hg_prof_uint_hash, hg_prof_uint_equal);
     /* Register available PVARs */
+    HG_PROF_PVAR_UINT_COUNTER_REGISTER(HG_UINT, HG_PROF_BIND_NO_OBJECT, hg_pvar_hg_backfill_queue_count, "Backfill queue size");
     HG_PROF_PVAR_UINT_COUNTER_REGISTER(HG_UINT, HG_PROF_BIND_NO_OBJECT, hg_pvar_hg_forward_count, "Number of times HG_Forward has been invoked");
     HG_PROF_PVAR_DOUBLE_COUNTER_REGISTER(HG_DOUBLE, HG_PROF_BIND_NO_OBJECT, hg_pvar_hg_input_serial_time, "Time taken to serialize input (s)");
     HG_PROF_PVAR_DOUBLE_COUNTER_REGISTER(HG_DOUBLE, HG_PROF_BIND_NO_OBJECT, hg_pvar_hg_input_deserial_time, "Time taken to de-serialize input (s)");

src/mercury_prof_pvar_impl.c

@@ -38,7 +38,7 @@ typedef struct hg_prof_pvar_data_t hg_prof_pvar_data_t;
 /* Public Macros */
 /*****************/
 
-#define NUM_PVARS 5 /* Number of PVARs currently exported. PVAR indices go from 0......(NUM_PVARS - 1). */
+#define NUM_PVARS 6 /* Number of PVARs currently exported. PVAR indices go from 0......(NUM_PVARS - 1). */
 
 /* PVAR handle declaration and registration macros */
 #define HG_PROF_PVAR_UINT_COUNTER(name) \
@@ -63,7 +63,7 @@ typedef struct hg_prof_pvar_data_t hg_prof_pvar_data_t;
         HG_PROF_PVAR_REGISTER_impl(HG_PVAR_CLASS_COUNTER, dtype, #name, \
             (void *)addr_##name, 1, bind, 1, desc); 
 
-/* Increment the value of a PVAR */
+/* Change the value of a PVAR */
 #define HG_PROF_PVAR_UINT_COUNTER_INC(name, val) \
     addr_##name = (addr_##name == NULL ? hg_prof_get_pvar_addr_from_name(#name): addr_##name); \
     for(int i=0; i < val; i++) \
@@ -73,6 +73,10 @@ typedef struct hg_prof_pvar_data_t hg_prof_pvar_data_t;
     addr_##name = (addr_##name == NULL ? hg_prof_get_pvar_addr_from_name(#name): addr_##name); \
     *(addr_##name) += val;
 
+#define HG_PROF_PVAR_UINT_COUNTER_SET(name, val) \
+    addr_##name = (addr_##name == NULL ? hg_prof_get_pvar_addr_from_name(#name): addr_##name); \
+    hg_atomic_set32(addr_##name, val);
+
 /**
  * Internal routine that gets invoked during Mercury's own initialization routine.
  * General routine for initializing the PVAR data structures and registering any PVARs that are not bound to a specific module.