X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/dacbc0413ea77996e4ec5f4b28907e949c5c6f6a..7c325b8aab369b3db924f9c3bcfbf8a97523745c:/src/instr/instr_paje_trace.cpp diff --git a/src/instr/instr_paje_trace.cpp b/src/instr/instr_paje_trace.cpp index 3e92c07ee4..f880887903 100644 --- a/src/instr/instr_paje_trace.cpp +++ b/src/instr/instr_paje_trace.cpp @@ -1,83 +1,62 @@ -/* Copyright (c) 2010-2016. The SimGrid Team. +/* Copyright (c) 2010-2019. The SimGrid Team. * All rights reserved. */ /* This program is free software; you can redistribute it and/or modify it * under the terms of the license (GNU LGPL) which comes with this package. */ -#include "src/instr/instr_private.h" -#include "src/instr/instr_smpi.h" -#include "src/smpi/private.hpp" +#include "simgrid/sg_config.hpp" +#include "src/instr/instr_private.hpp" +#include "src/instr/instr_smpi.hpp" +#include "src/smpi/include/private.hpp" #include "typeinfo" -#include "xbt/virtu.h" /* sg_cmdline */ -#include -#include -#include /** std::setprecision **/ -#include "simgrid/sg_config.h" +#include XBT_LOG_NEW_DEFAULT_SUBCATEGORY(instr_paje_trace, instr, "tracing event system"); -extern FILE * tracing_file; -extern s_instr_trace_writer_t active_writer; +extern std::ofstream tracing_file; -static std::stringstream stream; -FILE *tracing_file = nullptr; +static std::vector buffer; -void print_NULL(PajeEvent* event){} - -/* The active set of functions for the selected trace format - * By default, they all do nothing, hence the print_NULL to avoid segfaults */ - -s_instr_trace_writer_t active_writer = {&print_NULL, &print_NULL, &print_NULL, &print_NULL, &print_NULL, &print_NULL, - &print_NULL, &print_NULL, &print_NULL, &print_NULL, &print_NULL, &print_NULL, - &print_NULL, &print_NULL, &print_NULL, &print_NULL, &print_NULL, &print_NULL}; - -std::vector buffer; -void buffer_debug(std::vector *buf); - -void dump_comment (const char *comment) +void dump_comment(const std::string& comment) { - if (!strlen(comment)) return; - fprintf (tracing_file, "# %s\n", comment); + if (not comment.empty()) + tracing_file << "# " << comment << std::endl; } -void dump_comment_file (const char *filename) +void dump_comment_file(const std::string& filename) { - if (!strlen(filename)) return; - FILE *file = fopen (filename, "r"); - if (!file){ - THROWF (system_error, 1, "Comment file %s could not be opened for reading.", filename); - } - while (!feof(file)){ - char c; - c = fgetc(file); - if (feof(file)) break; - fprintf (tracing_file, "# "); - while (c != '\n'){ - fprintf (tracing_file, "%c", c); - c = fgetc(file); - if (feof(file)) break; - } - fprintf (tracing_file, "\n"); + if (filename.empty()) + return; + std::ifstream fs(filename.c_str(), std::ifstream::in); + + if (fs.fail()) + THROWF(system_error, 1, "Comment file %s could not be opened for reading.", filename.c_str()); + + while (not fs.eof()) { + std::string line; + std::getline(fs, line); + tracing_file << "# " << line; } - fclose(file); + fs.close(); } double TRACE_last_timestamp_to_dump = 0; //dumps the trace file until the timestamp TRACE_last_timestamp_to_dump -void TRACE_paje_dump_buffer (int force) +void TRACE_paje_dump_buffer(bool force) { - if (!TRACE_is_enabled()) return; - XBT_DEBUG("%s: dump until %f. starts", __FUNCTION__, TRACE_last_timestamp_to_dump); + if (not TRACE_is_enabled()) + return; + XBT_DEBUG("%s: dump until %f. starts", __func__, TRACE_last_timestamp_to_dump); if (force){ - for (auto event : buffer){ + for (auto const& event : buffer) { event->print(); delete event; } buffer.clear(); - }else{ - std::vector::iterator i = buffer.begin(); - for (auto event :buffer){ - double head_timestamp = event->timestamp; + } else { + std::vector::iterator i = buffer.begin(); + for (auto const& event : buffer) { + double head_timestamp = event->timestamp_; if (head_timestamp > TRACE_last_timestamp_to_dump) break; event->print(); @@ -86,623 +65,39 @@ void TRACE_paje_dump_buffer (int force) } buffer.erase(buffer.begin(), i); } - XBT_DEBUG("%s: ends", __FUNCTION__); + XBT_DEBUG("%s: ends", __func__); } -void buffer_debug(std::vector *buf); -void buffer_debug(std::vector *buf) { - return; +static void buffer_debug(std::vector* buf) +{ + if (not XBT_LOG_ISENABLED(instr_paje_trace, xbt_log_priority_debug)) + return; XBT_DEBUG(">>>>>> Dump the state of the buffer. %zu events", buf->size()); - for (auto event :*buf){ + for (auto const& event : *buf) { event->print(); - XBT_DEBUG("%p %s", event, stream.str().c_str()); - stream.str(""); - stream.clear(); + XBT_DEBUG("%p %s", event, event->stream_.str().c_str()); + event->stream_.str(""); + event->stream_.clear(); } XBT_DEBUG("<<<<<<"); } -static void print_row() { - stream << std::endl; - fprintf(tracing_file, "%s", stream.str().c_str()); - XBT_DEBUG("Dump %s", stream.str().c_str()); - stream.str(""); - stream.clear(); -} - -static void print_timestamp(PajeEvent* event) { - stream << " "; - /* prevent 0.0000 in the trace - this was the behavior before the transition to c++ */ - if (event->timestamp < 1e-12) - stream << 0; - else - stream << event->timestamp; -} - /* internal do the instrumentation module */ -static void insert_into_buffer (PajeEvent* tbi) +void simgrid::instr::PajeEvent::insert_into_buffer() { - if (TRACE_buffer() == 0){ - tbi->print (); - delete tbi; - return; - } - buffer_debug(&buffer); - - XBT_DEBUG("%s: insert event_type=%d, timestamp=%f, buffersize=%zu)", - __FUNCTION__, (int)tbi->event_type, tbi->timestamp, buffer.size()); - std::vector::reverse_iterator i; + XBT_DEBUG("%s: insert event_type=%u, timestamp=%f, buffersize=%zu)", __func__, eventType_, timestamp_, buffer.size()); + std::vector::reverse_iterator i; for (i = buffer.rbegin(); i != buffer.rend(); ++i) { - PajeEvent* e1 = *i; - XBT_DEBUG("compare to %p is of type %d; timestamp:%f", e1, - (int)e1->event_type, e1->timestamp); - if (e1->timestamp <= tbi->timestamp) + simgrid::instr::PajeEvent* e1 = *i; + XBT_DEBUG("compare to %p is of type %u; timestamp:%f", e1, e1->eventType_, e1->timestamp_); + if (e1->timestamp_ <= timestamp_) break; } - buffer.insert(i.base(), tbi); if (i == buffer.rend()) - XBT_DEBUG("%s: inserted at beginning", __FUNCTION__); + XBT_DEBUG("%s: inserted at beginning", __func__); else if (i == buffer.rbegin()) - XBT_DEBUG("%s: inserted at end", __FUNCTION__); + XBT_DEBUG("%s: inserted at end", __func__); else - XBT_DEBUG("%s: inserted at pos= %zd from its end", __FUNCTION__, - std::distance(buffer.rbegin(),i)); - - buffer_debug(&buffer); -} - -PajeEvent:: ~PajeEvent() -{ - XBT_DEBUG("%s not implemented for %p: event_type=%d, timestamp=%f", __FUNCTION__, - this, (int)event_type, timestamp); -// xbt_backtrace_display_current(); - - /* switch (event->event_type){ - case PAJE_StartLink: - xbt_free (((startLink_t)(event->data))->value); - xbt_free (((startLink_t)(event->data))->key); - break; - case PAJE_EndLink: - xbt_free (((endLink_t)(event->data))->value); - xbt_free (((endLink_t)(event->data))->key); - break; - default: - break; - }*/ -} - -void TRACE_paje_start() { - char *filename = TRACE_get_filename(); - tracing_file = fopen(filename, "w"); - if (tracing_file == nullptr){ - THROWF (system_error, 1, "Tracefile %s could not be opened for writing.", filename); - } - - XBT_DEBUG("Filename %s is open for writing", filename); - - /* output generator version */ - fprintf (tracing_file, "#This file was generated using SimGrid-%d.%d.%d\n", - SIMGRID_VERSION_MAJOR, SIMGRID_VERSION_MINOR, SIMGRID_VERSION_PATCH); - fprintf (tracing_file, "#["); - unsigned int cpt; - char *str; - xbt_dynar_foreach (xbt_cmdline, cpt, str){ - fprintf(tracing_file, "%s ",str); - } - fprintf (tracing_file, "]\n"); - - /* output one line comment */ - dump_comment (TRACE_get_comment()); - - /* output comment file */ - dump_comment_file (TRACE_get_comment_file()); - - /* output header */ - TRACE_header(TRACE_basic(),TRACE_display_sizes()); -} - -void TRACE_paje_end() { - fclose(tracing_file); - char *filename = TRACE_get_filename(); - XBT_DEBUG("Filename %s is closed", filename); -} - -DefineContainerEvent::DefineContainerEvent(type_t type) -{ - - event_type = PAJE_DefineContainerType; - timestamp = 0; - this->type = type; - XBT_DEBUG("%s: event_type=%d", __FUNCTION__, (int)event_type); - //print it - print (); -} - -void DefineContainerEvent::print() { - XBT_DEBUG("%s: event_type=%d, timestamp=%.*f", __FUNCTION__, (int)event_type, TRACE_precision(), timestamp); - stream << std::fixed << std::setprecision(TRACE_precision()); - stream << (int)this->event_type; - stream << " " << type->id - << " " << type->father->id - << " " << type->name; - print_row(); -} - - - -DefineVariableTypeEvent::DefineVariableTypeEvent(type_t type) -{ - this->event_type = PAJE_DefineVariableType; - this->timestamp = 0; - this->type = type; - - XBT_DEBUG("%s: event_type=%d", __FUNCTION__, (int)event_type); - - //print it - print (); -} - -void DefineVariableTypeEvent::print() { - XBT_DEBUG("%s: event_type=%d, timestamp=%.*f", __FUNCTION__, (int)event_type, TRACE_precision(), timestamp); - stream << std::fixed << std::setprecision(TRACE_precision()); - stream << (int)this->event_type; - stream << " " << type->id - << " " << type->father->id - << " " << type->name; - if (type->color) - stream << " \"" << type->color << "\""; - print_row(); -} - -DefineStateTypeEvent::DefineStateTypeEvent(type_t type) -{ - this->event_type = PAJE_DefineStateType; - this->timestamp = 0; - this->type = type; - - XBT_DEBUG("%s: event_type=%d", __FUNCTION__, (int)event_type); - - //print it - print(); -} - - -DefineEventTypeEvent::DefineEventTypeEvent(type_t type) -{ - this->event_type = PAJE_DefineEventType; - this->timestamp = 0; - this->type = type; - - XBT_DEBUG("%s: event_type=%d", __FUNCTION__, (int)event_type); - - //print it - print(); -} - - -void DefineStateTypeEvent::print() { - XBT_DEBUG("%s: event_type=%d, timestamp=%.*f", __FUNCTION__, (int)event_type, TRACE_precision(), timestamp); - stream << std::fixed << std::setprecision(TRACE_precision()); - stream << (int)this->event_type; - stream << " " << type->id - << " " << type->father->id - << " " << type->name; - print_row(); -} - -void DefineEventTypeEvent::print() { - XBT_DEBUG("%s: event_type=%d, timestamp=%.*f", __FUNCTION__, (int)event_type, TRACE_precision(), timestamp); - stream << std::fixed << std::setprecision(TRACE_precision()); - stream << (int)this->event_type; - stream << " " << type->id - << " " << type->father->id - << " " << type->name; - print_row(); -} - -DefineLinkTypeEvent::DefineLinkTypeEvent(type_t type, type_t source, type_t dest) -{ - this->event_type = PAJE_DefineLinkType; - this->timestamp = 0; - this->type = type; - this->source = source; - this->dest = dest; - - XBT_DEBUG("%s: event_type=%d", __FUNCTION__, (int)event_type); - - //print it - print(); -} - -void DefineLinkTypeEvent::print() { - XBT_DEBUG("%s: event_type=%d, timestamp=%.*f", __FUNCTION__, (int)event_type, TRACE_precision(), timestamp); - stream << std::fixed << std::setprecision(TRACE_precision()); - stream << (int)this->event_type; - stream << " " << type->id - << " " << type->father->id - << " " << source->id - << " " << dest->id - << " " << type->name; - print_row(); -} - -DefineEntityValueEvent::DefineEntityValueEvent (val_t value) -{ - this->event_type = PAJE_DefineEntityValue; - this->timestamp = 0; - this->value = value; - - XBT_DEBUG("%s: event_type=%d", __FUNCTION__, (int)event_type); - - //print it - print(); -} - - -void DefineEntityValueEvent::print() { - XBT_DEBUG("%s: event_type=%d, timestamp=%.*f", __FUNCTION__, (int)event_type, TRACE_precision(), timestamp); - stream << std::fixed << std::setprecision(TRACE_precision()); - stream << (int)this->event_type; - stream << " " << value->id - << " " << value->father->id - << " " << value->name; - if(value->color) - stream << " \"" << value->color << "\""; - print_row(); -} - -CreateContainerEvent::CreateContainerEvent (container_t container) -{ - this->event_type = PAJE_CreateContainer; - this->timestamp = SIMIX_get_clock(); - this->container = container; - - XBT_DEBUG("%s: event_type=%d, timestamp=%f", __FUNCTION__, (int)event_type, this->timestamp); - - //print it - print(); -} - -void CreateContainerEvent::print() { - XBT_DEBUG("%s: event_type=%d, timestamp=%.*f", __FUNCTION__, (int)event_type, TRACE_precision(), timestamp); - stream << std::fixed << std::setprecision(TRACE_precision()); - stream << (int)this->event_type; - print_timestamp(this); - stream << " " << container->id - << " " << container->type->id - << " " << container->father->id - << " \"" << container->name << "\""; - - print_row(); -} - -DestroyContainerEvent::DestroyContainerEvent (container_t container) -{ - this->event_type = PAJE_DestroyContainer; - this->timestamp = SIMIX_get_clock(); - this->container = container; - - XBT_DEBUG("%s: event_type=%d, timestamp=%f", __FUNCTION__, (int)event_type, this->timestamp); - - print(); -} - -void DestroyContainerEvent::print() { - XBT_DEBUG("%s: event_type=%d, timestamp=%.*f", __FUNCTION__, (int)event_type, TRACE_precision(), timestamp); - stream << std::fixed << std::setprecision(TRACE_precision()); - stream << (int)this->event_type; - print_timestamp(this); - stream << " " << container->type->id - << " " << container->id; - - print_row(); -} - -SetVariableEvent::SetVariableEvent (double timestamp, container_t container, type_t type, double value) -{ - this->event_type = PAJE_SetVariable; - this->timestamp = timestamp; - this->type = type; - this->container = container; - this->value = value; - - XBT_DEBUG("%s: event_type=%d, timestamp=%f", __FUNCTION__, (int)event_type, this->timestamp); - - insert_into_buffer (this); -} - -void SetVariableEvent::print() { - XBT_DEBUG("%s: event_type=%d, timestamp=%.*f", __FUNCTION__, (int)event_type, TRACE_precision(), timestamp); - stream << std::fixed << std::setprecision(TRACE_precision()); - stream << (int)this->event_type; - print_timestamp(this); - stream << " " << type->id - << " " << container->id - << " " << value; - print_row(); -} - -AddVariableEvent::AddVariableEvent (double timestamp, container_t container, type_t type, double value) -{ - this->event_type = PAJE_AddVariable; - this->timestamp = timestamp; - this->type = type; - this->container = container; - this->value = value; - - XBT_DEBUG("%s: event_type=%d, timestamp=%f", __FUNCTION__, (int)event_type, this->timestamp); - - insert_into_buffer (this); -} - -void AddVariableEvent::print() { - XBT_DEBUG("%s: event_type=%d, timestamp=%.*f", __FUNCTION__, (int)event_type, TRACE_precision(), timestamp); - stream << std::fixed << std::setprecision(TRACE_precision()); - stream << (int)this->event_type; - print_timestamp(this); - stream << " " << type->id - << " " << container->id - << " " << value; - print_row(); -} - -SubVariableEvent::SubVariableEvent (double timestamp, container_t container, type_t type, double value) -{ - this->event_type = PAJE_SubVariable; - this->timestamp = timestamp; - this->type = type; - this->container = container; - this->value = value; - - XBT_DEBUG("%s: event_type=%d, timestamp=%f", __FUNCTION__, (int)event_type, this->timestamp); - - insert_into_buffer (this); -} - -void SubVariableEvent::print() { - XBT_DEBUG("%s: event_type=%d, timestamp=%.*f", __FUNCTION__, (int)event_type, TRACE_precision(), timestamp); - stream << std::fixed << std::setprecision(TRACE_precision()); - stream << (int)this->event_type; - print_timestamp(this); - stream << " " << type->id - << " " << container->id - << " " << value; - print_row(); -} - -SetStateEvent::SetStateEvent (double timestamp, container_t container, type_t type, val_t value) -{ - this->event_type = PAJE_SetState; - this->timestamp = timestamp; - this->type = type; - this->container = container; - this->value = value; - -#if HAVE_SMPI - if (xbt_cfg_get_boolean("smpi/trace-call-location")) { - smpi_trace_call_location_t* loc = smpi_trace_get_call_location(); - filename = loc->filename; - linenumber = loc->linenumber; - } -#endif - - XBT_DEBUG("%s: event_type=%d, timestamp=%f", __FUNCTION__, (int)event_type, this->timestamp); - - insert_into_buffer (this); -} - -void SetStateEvent::print() { - XBT_DEBUG("%s: event_type=%d, timestamp=%.*f", __FUNCTION__, (int)event_type, TRACE_precision(), timestamp); - stream << std::fixed << std::setprecision(TRACE_precision()); - stream << (int)this->event_type; - print_timestamp(this); - stream << " " << type->id - << " " << container->id; - stream << " " <id; -#if HAVE_SMPI - if (xbt_cfg_get_boolean("smpi/trace-call-location")) { - stream << " \"" << filename - << "\" " << linenumber; - } -#endif - print_row(); -} - -PushStateEvent::PushStateEvent (double timestamp, container_t container, type_t type, val_t value, void* extra) -{ - this->event_type = PAJE_PushState; - this->timestamp = timestamp; - this->type = type; - this->container = container; - this->value = value; - this->extra = extra; - -#if HAVE_SMPI - if (xbt_cfg_get_boolean("smpi/trace-call-location")) { - smpi_trace_call_location_t* loc = smpi_trace_get_call_location(); - filename = loc->filename; - linenumber = loc->linenumber; - } -#endif - - XBT_DEBUG("%s: event_type=%d, timestamp=%f", __FUNCTION__, (int)event_type, this->timestamp); - - insert_into_buffer (this); -} - -PushStateEvent::PushStateEvent (double timestamp, container_t container, type_t type, val_t value) - : PushStateEvent(timestamp, container, type, value, nullptr) -{} -void PushStateEvent::print() { - XBT_DEBUG("%s: event_type=%d, timestamp=%.*f", __FUNCTION__, (int)event_type, TRACE_precision(), timestamp); - stream << std::fixed << std::setprecision(TRACE_precision()); - stream << (int)this->event_type; - print_timestamp(this); - stream << " " << type->id - << " " << container->id; - stream << " " <id; - - if (TRACE_display_sizes()) { - stream << " "; - if (extra != nullptr) { - stream << static_cast(extra)->send_size; - } - else { - stream << 0; - } - } -#if HAVE_SMPI - if (xbt_cfg_get_boolean("smpi/trace-call-location")) { - stream << " \"" << filename - << "\" " << linenumber; - } -#endif - print_row(); - - if (extra != nullptr) { - if (static_cast(extra)->sendcounts != nullptr) - xbt_free(static_cast(extra)->sendcounts); - if (static_cast(extra)->recvcounts != nullptr) - xbt_free(static_cast(extra)->recvcounts); - xbt_free(extra); - } -} - - -PopStateEvent::PopStateEvent (double timestamp, container_t container, type_t type) -{ - this->event_type = PAJE_PopState; - this->timestamp = timestamp; - this->type = type; - this->container = container; - - XBT_DEBUG("%s: event_type=%d, timestamp=%f", __FUNCTION__, (int)event_type, this->timestamp); - - insert_into_buffer (this); -} - -void PopStateEvent::print() { - XBT_DEBUG("%s: event_type=%d, timestamp=%.*f", __FUNCTION__, (int)event_type, TRACE_precision(), timestamp); - stream << std::fixed << std::setprecision(TRACE_precision()); - stream << (int)this->event_type; - print_timestamp(this); - stream << " " << type->id - << " " << container->id; - print_row(); -} - -ResetStateEvent::ResetStateEvent (double timestamp, container_t container, type_t type) -{ - this->event_type = PAJE_ResetState; - this->timestamp = timestamp; - this->type = type; - this->container = container; - - XBT_DEBUG("%s: event_type=%d, timestamp=%f", __FUNCTION__, (int)event_type, this->timestamp); - - insert_into_buffer (this); -} - -void ResetStateEvent::print() { - XBT_DEBUG("%s: event_type=%d, timestamp=%.*f", __FUNCTION__, (int)event_type, TRACE_precision(), timestamp); - stream << std::fixed << std::setprecision(TRACE_precision()); - stream << (int)this->event_type; - print_timestamp(this); - stream << " " << type->id - << " " << container->id; - print_row(); -} - -StartLinkEvent::StartLinkEvent (double timestamp, container_t container, - type_t type, container_t sourceContainer, const char *value, const char *key) - : StartLinkEvent(timestamp, container, type, sourceContainer, value, key, -1) -{} - -StartLinkEvent::StartLinkEvent (double timestamp, container_t container, type_t type, container_t sourceContainer, - const char *value, const char *key, int size) -{ - event_type = PAJE_StartLink; - this->timestamp = timestamp; - this->type = type; - this->container = container; - this->sourceContainer = sourceContainer; - this->value = xbt_strdup(value); - this->key = xbt_strdup(key); - this->size = size; - - XBT_DEBUG("%s: event_type=%d, timestamp=%f, value:%s", __FUNCTION__, - (int)event_type, this->timestamp, this->value); - - insert_into_buffer (this); -} - -void StartLinkEvent::print() { - XBT_DEBUG("%s: event_type=%d, timestamp=%.*f", __FUNCTION__, (int)event_type, TRACE_precision(), timestamp); - stream << std::fixed << std::setprecision(TRACE_precision()); - stream << (int)this->event_type; - print_timestamp(this); - stream << " " <id - << " " <id - << " " <id - << " " << key; - - if (TRACE_display_sizes()) { - stream << " " << size; - } - print_row(); -} - -EndLinkEvent::EndLinkEvent (double timestamp, container_t container, type_t type, container_t destContainer, - const char *value, const char *key) -{ - this->event_type = PAJE_EndLink; - this->timestamp = timestamp; - this->type = type; - this->container = container; - this->destContainer = destContainer; - this->value = xbt_strdup(value); - this->key = xbt_strdup(key); - - XBT_DEBUG("%s: event_type=%d, timestamp=%f", __FUNCTION__, (int)event_type, this->timestamp); - - insert_into_buffer (this); -} - - -void EndLinkEvent::print() { - XBT_DEBUG("%s: event_type=%d, timestamp=%.*f", __FUNCTION__, (int)event_type, TRACE_precision(), timestamp); - stream << std::fixed << std::setprecision(TRACE_precision()); - stream << (int)this->event_type; - print_timestamp(this); - stream << " " <id - << " " <id - << " " <id - << " " << key; - print_row(); -} - -NewEvent::NewEvent (double timestamp, container_t container, type_t type, val_t value) -{ - this->event_type = PAJE_NewEvent; - this->timestamp = timestamp; - this->type = type; - this->container = container; - this->value = value; - - XBT_DEBUG("%s: event_type=%d, timestamp=%f", __FUNCTION__, (int)event_type, this->timestamp); - - insert_into_buffer (this); -} - -void NewEvent::print () { - XBT_DEBUG("%s: event_type=%d, timestamp=%.*f", __FUNCTION__, (int)event_type, TRACE_precision(), timestamp); - stream << std::fixed << std::setprecision(TRACE_precision()); - stream << (int)this->event_type; - print_timestamp(this); - stream << " " << type->id - << " " << container->id - << " " << value->id; - print_row(); + XBT_DEBUG("%s: inserted at pos= %zd from its end", __func__, std::distance(buffer.rbegin(), i)); + buffer.insert(i.base(), this); }