Profiler - Remove buffer to fix memory leaks

Change-Id: Ia3717ccfc147221557f5469965c2abb76b3f451c
Signed-off-by: Galantsev, Dmitrii <dmitrii.galantsev@amd.com>

example/rocprofiler_example.cc

@@ -22,10 +22,8 @@ THE SOFTWARE.
 
 #include <unistd.h>
 
-#include <cstddef>
 #include <iomanip>
 #include <iostream>
-#include <string_view>
 #include <vector>
 
 #include "rdc/rdc.h"
@@ -33,7 +31,7 @@ THE SOFTWARE.
 rdc_handle_t rdc_handle;
 rdc_status_t result;
 
-constexpr std::string_view value_to_string(rdc_field_value value) {
+const std::string value_to_string(rdc_field_value value) {
   switch (value.type) {
     case INTEGER:
       return std::to_string(value.value.l_int);

include/rdc_modules/rdc_rocp/RdcRocpCounterSampler.h

@@ -67,7 +67,6 @@ class CounterSampler {
  private:
   rocprofiler_agent_id_t agent_ = {};
   rocprofiler_context_id_t ctx_ = {};
-  rocprofiler_buffer_id_t buf_ = {};
   rocprofiler_profile_config_id_t profile_ = {.handle = 0};
 
   std::map<std::vector<std::string>, rocprofiler_profile_config_id_t> cached_profiles_;

rdc_libs/rdc_modules/rdc_rocp/RdcRocpCounterSampler.cc

@@ -63,31 +63,13 @@ std::vector<std::shared_ptr<CounterSampler>>& CounterSampler::get_samplers() { r
 
 CounterSampler::CounterSampler(rocprofiler_agent_id_t agent) : agent_(agent) {
   // Setup context (should only be done once per agent)
-  auto client_thread = rocprofiler_callback_thread_t{};
   RocprofilerCall([&]() { return rocprofiler_create_context(&ctx_); }, "context creation failed",
                   __FILE__, __LINE__);
 
-  RocprofilerCall(
-      [&]() {
-        // 4096 is total buffer size
-        // 2048 is size for callback buffer, not likely used as rdc reads results immediately, not
-        // from buffer feature will drop in future
-        return rocprofiler_create_buffer(
-            ctx_, 4096, 2048, ROCPROFILER_BUFFER_POLICY_LOSSLESS,
-            [](rocprofiler_context_id_t, rocprofiler_buffer_id_t, rocprofiler_record_header_t**,
-               size_t, void*, uint64_t) {},
-            nullptr, &buf_);
-      },
-      "buffer creation failed", __FILE__, __LINE__);
-  RocprofilerCall([&]() { return rocprofiler_create_callback_thread(&client_thread); },
-                  "failure creating callback thread", __FILE__, __LINE__);
-  RocprofilerCall([&]() { return rocprofiler_assign_callback_thread(buf_, client_thread); },
-                  "failed to assign thread for buffer", __FILE__, __LINE__);
-
   RocprofilerCall(
       [&]() {
         return rocprofiler_configure_device_counting_service(
-            ctx_, buf_, agent,
+            ctx_, {.handle = 0}, agent,
             [](rocprofiler_context_id_t context_id, rocprofiler_agent_id_t,
                rocprofiler_agent_set_profile_callback_t set_config, void* user_data) {
               if (user_data) {