tracy/profiler/src/main.cpp
2019-09-21 15:43:01 +02:00

759 lines
27 KiB
C++

#include <algorithm>
#include <assert.h>
#include <chrono>
#include <inttypes.h>
#include <imgui.h>
#include "imgui_impl_glfw.h"
#include "imgui_impl_opengl3.h"
#include <mutex>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string>
#include <unordered_map>
#include <GL/gl3w.h>
#include <GLFW/glfw3.h>
#include <memory>
#include "../nfd/nfd.h"
#include <sys/stat.h>
#include <locale.h>
#ifdef _WIN32
# include <windows.h>
# include <shellapi.h>
#endif
#define STB_IMAGE_IMPLEMENTATION
#define STBI_ONLY_PNG
#include "stb_image.h"
#include "../../common/TracyProtocol.hpp"
#include "../../server/tracy_flat_hash_map.hpp"
#include "../../server/tracy_pdqsort.h"
#include "../../server/TracyBadVersion.hpp"
#include "../../server/TracyFileRead.hpp"
#include "../../server/TracyImGui.hpp"
#include "../../server/TracyPrint.hpp"
#include "../../server/TracyStorage.hpp"
#include "../../server/TracyView.hpp"
#include "../../server/TracyWorker.hpp"
#include "../../server/TracyVersion.hpp"
#include "../../server/IconsFontAwesome5.h"
#include "imgui_freetype.h"
#include "Arimo.hpp"
#include "Cousine.hpp"
#include "FontAwesomeSolid.hpp"
#include "icon.hpp"
#include "ResolvService.hpp"
static void glfw_error_callback(int error, const char* description)
{
fprintf(stderr, "Error %d: %s\n", error, description);
}
static void OpenWebpage( const char* url )
{
#ifdef _WIN32
ShellExecuteA( nullptr, nullptr, url, nullptr, nullptr, 0 );
#elif defined __APPLE__
char buf[1024];
sprintf( buf, "open %s", url );
system( buf );
#else
char buf[1024];
sprintf( buf, "xdg-open %s", url );
system( buf );
#endif
}
static GLFWwindow* s_glfwWindow = nullptr;
static bool s_customTitle = false;
static void SetWindowTitleCallback( const char* title )
{
assert( s_glfwWindow );
glfwSetWindowTitle( s_glfwWindow, title );
s_customTitle = true;
}
std::vector<std::unordered_map<std::string, uint64_t>::const_iterator> RebuildConnectionHistory( const std::unordered_map<std::string, uint64_t>& connHistMap )
{
std::vector<std::unordered_map<std::string, uint64_t>::const_iterator> ret;
ret.reserve( connHistMap.size() );
for( auto it = connHistMap.begin(); it != connHistMap.end(); ++it )
{
ret.emplace_back( it );
}
tracy::pdqsort_branchless( ret.begin(), ret.end(), []( const auto& lhs, const auto& rhs ) { return lhs->second > rhs->second; } );
return ret;
}
struct ClientData
{
int64_t time;
uint32_t protocolVersion;
uint32_t activeTime;
std::string procName;
std::string address;
};
int main( int argc, char** argv )
{
tracy::flat_hash_map<uint32_t, ClientData> clients;
std::unique_ptr<tracy::View> view;
tracy::BadVersionState badVer;
int port = 8086;
const char* connectTo = nullptr;
if( argc == 2 )
{
auto f = std::unique_ptr<tracy::FileRead>( tracy::FileRead::Open( argv[1] ) );
if( f )
{
view = std::make_unique<tracy::View>( *f );
}
}
else
{
while( argc >= 3 )
{
if( strcmp( argv[1], "-a" ) == 0 )
{
connectTo = argv[2];
}
else if( strcmp( argv[1], "-p" ) == 0 )
{
port = atoi( argv[2] );
}
else
{
fprintf( stderr, "Bad parameter: %s", argv[1] );
exit( 1 );
}
argc -= 2;
argv += 2;
}
}
if( connectTo )
{
view = std::make_unique<tracy::View>( connectTo, port );
}
char title[128];
sprintf( title, "Tracy Profiler %i.%i.%i", tracy::Version::Major, tracy::Version::Minor, tracy::Version::Patch );
std::string winPosFile = tracy::GetSavePath( "window.position" );
int x = 200, y = 200, w = 1650, h = 960, maximize = 0;
{
FILE* f = fopen( winPosFile.c_str(), "rb" );
if( f )
{
uint32_t data[5];
fread( data, 1, sizeof( data ), f );
fclose( f );
x = data[0];
y = data[1];
w = data[2];
h = data[3];
maximize = data[4];
}
if( w <= 0 || h <= 0 )
{
x = 200;
y = 200;
w = 1650;
h = 960;
maximize = 0;
}
}
std::string connHistFile = tracy::GetSavePath( "connection.history" );
std::unordered_map<std::string, uint64_t> connHistMap;
std::vector<std::unordered_map<std::string, uint64_t>::const_iterator> connHistVec;
{
FILE* f = fopen( connHistFile.c_str(), "rb" );
if( f )
{
uint64_t sz;
fread( &sz, 1, sizeof( sz ), f );
for( uint64_t i=0; i<sz; i++ )
{
uint64_t ssz, cnt;
fread( &ssz, 1, sizeof( ssz ), f );
assert( ssz < 1024 );
char tmp[1024];
fread( tmp, 1, ssz, f );
fread( &cnt, 1, sizeof( cnt ), f );
connHistMap.emplace( std::string( tmp, tmp+ssz ), cnt );
}
fclose( f );
connHistVec = RebuildConnectionHistory( connHistMap );
}
}
// Setup window
glfwSetErrorCallback(glfw_error_callback);
if( !glfwInit() ) return 1;
glfwWindowHint(GLFW_VISIBLE, 0);
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
#if __APPLE__
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
#endif
GLFWwindow* window = glfwCreateWindow( w, h, title, NULL, NULL);
if( !window ) return 1;
{
GLFWimage icon;
icon.pixels = stbi_load_from_memory( (const stbi_uc*)Icon_data, Icon_size, &icon.width, &icon.height, nullptr, 4 );
glfwSetWindowIcon( window, 1, &icon );
free( icon.pixels );
}
glfwSetWindowPos( window, x, y );
#ifdef GLFW_MAXIMIZED
if( maximize ) glfwMaximizeWindow( window );
#endif
s_glfwWindow = window;
glfwMakeContextCurrent(window);
glfwSwapInterval(1); // Enable vsync
gl3wInit();
float dpiScale = 1.f;
#ifdef _WIN32
typedef UINT(*GDFS)(void);
GDFS getDpiForSystem = nullptr;
HMODULE dll = GetModuleHandleW(L"user32.dll");
if (dll != INVALID_HANDLE_VALUE)
getDpiForSystem = (GDFS)GetProcAddress(dll, "GetDpiForSystem");
if (getDpiForSystem)
dpiScale = getDpiForSystem() / 96.f;
#endif
// Setup ImGui binding
IMGUI_CHECKVERSION();
ImGui::CreateContext();
ImGuiIO& io = ImGui::GetIO();
std::string iniFileName = tracy::GetSavePath( "imgui.ini" );
io.IniFilename = iniFileName.c_str();
io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;
ImGui_ImplGlfw_InitForOpenGL( window, true );
ImGui_ImplOpenGL3_Init( "#version 150" );
static const ImWchar rangesBasic[] = {
0x0020, 0x00FF, // Basic Latin + Latin Supplement
0x03BC, 0x03BC, // micro
0x03C3, 0x03C3, // small sigma
0,
};
static const ImWchar rangesIcons[] = {
ICON_MIN_FA, ICON_MAX_FA,
0
};
ImFontConfig configMerge;
configMerge.MergeMode = true;
io.Fonts->AddFontFromMemoryCompressedTTF( tracy::Arimo_compressed_data, tracy::Arimo_compressed_size, 15.0f * dpiScale, nullptr, rangesBasic );
io.Fonts->AddFontFromMemoryCompressedTTF( tracy::FontAwesomeSolid_compressed_data, tracy::FontAwesomeSolid_compressed_size, 14.0f * dpiScale, &configMerge, rangesIcons );
auto fixedWidth = io.Fonts->AddFontFromMemoryCompressedTTF( tracy::Cousine_compressed_data, tracy::Cousine_compressed_size, 15.0f * dpiScale );
auto bigFont = io.Fonts->AddFontFromMemoryCompressedTTF( tracy::Arimo_compressed_data, tracy::Cousine_compressed_size, 20.0f * dpiScale );
auto smallFont = io.Fonts->AddFontFromMemoryCompressedTTF( tracy::Arimo_compressed_data, tracy::Cousine_compressed_size, 10.0f * dpiScale );
ImGuiFreeType::BuildFontAtlas( io.Fonts, ImGuiFreeType::LightHinting );
ImGui::StyleColorsDark();
auto& style = ImGui::GetStyle();
style.WindowBorderSize = 1.f * dpiScale;
style.FrameBorderSize = 1.f * dpiScale;
style.FrameRounding = 5.f;
style.Colors[ImGuiCol_ScrollbarBg] = ImVec4( 1, 1, 1, 0.03f );
style.ScaleAllSizes( dpiScale );
ImVec4 clear_color = ImColor(114, 144, 154);
char addr[1024] = { "127.0.0.1" };
std::thread loadThread;
std::unique_ptr<tracy::UdpListen> broadcastListen;
enum class ViewShutdown { False, True, Join };
ViewShutdown viewShutdown = ViewShutdown::False;
std::mutex resolvLock;
tracy::flat_hash_map<std::string, std::string> resolvMap;
ResolvService resolv( port );
glfwShowWindow( window );
double time = 0;
// Main loop
while (!glfwWindowShouldClose(window))
{
glfwPollEvents();
if( glfwGetWindowAttrib( window, GLFW_ICONIFIED ) )
{
std::this_thread::sleep_for( std::chrono::milliseconds( 50 ) );
continue;
}
int display_w, display_h;
glfwGetFramebufferSize(window, &display_w, &display_h);
ImGui_ImplOpenGL3_NewFrame();
ImGui_ImplGlfw_NewFrame();
ImGui::NewFrame();
if( !view )
{
if( s_customTitle )
{
s_customTitle = false;
glfwSetWindowTitle( window, title );
}
const auto time = std::chrono::duration_cast<std::chrono::milliseconds>( std::chrono::system_clock::now().time_since_epoch() ).count();
if( !broadcastListen )
{
broadcastListen = std::make_unique<tracy::UdpListen>();
if( !broadcastListen->Listen( port ) )
{
broadcastListen.reset();
}
}
else
{
tracy::IpAddress addr;
size_t len;
auto msg = broadcastListen->Read( len, addr );
if( msg )
{
assert( len <= sizeof( tracy::BroadcastMessage ) );
tracy::BroadcastMessage bm;
memcpy( &bm, msg, len );
if( bm.broadcastVersion == tracy::BroadcastVersion )
{
const uint32_t protoVer = bm.protocolVersion;
const auto procname = bm.programName;
const auto activeTime = bm.activeTime;
auto address = addr.GetText();
const auto ipNumerical = addr.GetNumber();
auto it = clients.find( ipNumerical );
if( it == clients.end() )
{
std::string ip( address );
resolvLock.lock();
if( resolvMap.find( ip ) == resolvMap.end() )
{
resolvMap.emplace( ip, ip );
resolv.Query( ipNumerical, [&resolvMap, &resolvLock, ip] ( std::string&& name ) {
std::lock_guard<std::mutex> lock( resolvLock );
auto it = resolvMap.find( ip );
assert( it != resolvMap.end() );
std::swap( it->second, name );
} );
}
resolvLock.unlock();
clients.emplace( addr.GetNumber(), ClientData { time, protoVer, activeTime, procname, std::move( ip ) } );
}
else
{
it->second.time = time;
it->second.activeTime = activeTime;
if( it->second.protocolVersion != protoVer ) it->second.protocolVersion = protoVer;
if( strcmp( it->second.procName.c_str(), procname ) != 0 ) it->second.procName = procname;
}
}
}
auto it = clients.begin();
while( it != clients.end() )
{
const auto diff = time - it->second.time;
if( diff > 4000 ) // 4s
{
it = clients.erase( it );
}
else
{
++it;
}
}
}
setlocale( LC_NUMERIC, "C" );
style.Colors[ImGuiCol_WindowBg] = ImVec4( 0.129f, 0.137f, 0.11f, 1.f );
ImGui::Begin( "Get started", nullptr, ImGuiWindowFlags_AlwaysAutoResize );
char buf[128];
sprintf( buf, "Tracy Profiler %i.%i.%i", tracy::Version::Major, tracy::Version::Minor, tracy::Version::Patch );
ImGui::PushFont( bigFont );
tracy::TextCentered( buf );
ImGui::PopFont();
ImGui::Spacing();
if( ImGui::Button( ICON_FA_BOOK " Manual" ) )
{
OpenWebpage( "https://bitbucket.org/wolfpld/tracy/downloads/tracy.pdf" );
}
ImGui::SameLine();
if( ImGui::Button( ICON_FA_GLOBE_AMERICAS " Web" ) )
{
OpenWebpage( "https://bitbucket.org/wolfpld/tracy" );
}
ImGui::SameLine();
if( ImGui::Button( ICON_FA_COMMENT " Chat" ) )
{
OpenWebpage( "https://discord.gg/pk78auc" );
}
ImGui::SameLine();
if( ImGui::Button( ICON_FA_VIDEO " Tutorial" ) )
{
ImGui::OpenPopup( "tutorial" );
}
if( ImGui::BeginPopup( "tutorial" ) )
{
if( ImGui::Selectable( ICON_FA_VIDEO " Introduction to the Tracy Profiler" ) )
{
OpenWebpage( "https://www.youtube.com/watch?v=fB5B46lbapc" );
}
if( ImGui::Selectable( ICON_FA_VIDEO " New features in Tracy Profiler v0.3" ) )
{
OpenWebpage( "https://www.youtube.com/watch?v=3SXpDpDh2Uo" );
}
if( ImGui::Selectable( ICON_FA_VIDEO " New features in Tracy Profiler v0.4" ) )
{
OpenWebpage( "https://www.youtube.com/watch?v=eAkgkaO8B9o" );
}
if( ImGui::Selectable( ICON_FA_VIDEO " New features in Tracy Profiler v0.5" ) )
{
OpenWebpage( "https://www.youtube.com/watch?v=P6E7qLMmzTQ" );
}
ImGui::EndPopup();
}
ImGui::Separator();
ImGui::TextUnformatted( "Client address" );
bool connectClicked = false;
connectClicked |= ImGui::InputTextWithHint( "###connectaddress", "Enter address", addr, 1024, ImGuiInputTextFlags_EnterReturnsTrue );
if( !connHistVec.empty() )
{
ImGui::SameLine();
if( ImGui::BeginCombo( "##frameCombo", nullptr, ImGuiComboFlags_NoPreview ) )
{
int idxRemove = -1;
const auto sz = std::min<size_t>( 5, connHistVec.size() );
for( size_t i=0; i<sz; i++ )
{
const auto& str = connHistVec[i]->first;
if( ImGui::Selectable( str.c_str() ) )
{
memcpy( addr, str.c_str(), str.size() + 1 );
}
if( ImGui::IsItemHovered() && ImGui::IsKeyPressed( ImGui::GetKeyIndex( ImGuiKey_Delete ), false ) )
{
idxRemove = (int)i;
}
}
if( idxRemove >= 0 )
{
connHistMap.erase( connHistVec[idxRemove] );
connHistVec = RebuildConnectionHistory( connHistMap );
}
ImGui::EndCombo();
}
}
connectClicked |= ImGui::Button( ICON_FA_WIFI " Connect" );
if( connectClicked && *addr && !loadThread.joinable() )
{
std::string addrStr( addr );
auto it = connHistMap.find( addrStr );
if( it != connHistMap.end() )
{
it->second++;
}
else
{
connHistMap.emplace( std::move( addrStr ), 1 );
}
connHistVec = RebuildConnectionHistory( connHistMap );
view = std::make_unique<tracy::View>( addr, port, fixedWidth, smallFont, bigFont, SetWindowTitleCallback );
}
ImGui::SameLine( 0, ImGui::GetFontSize() * 2 );
if( ImGui::Button( ICON_FA_FOLDER_OPEN " Open saved trace" ) && !loadThread.joinable() )
{
nfdchar_t* fn;
auto res = NFD_OpenDialog( "tracy", nullptr, &fn );
if( res == NFD_OKAY )
{
try
{
auto f = std::shared_ptr<tracy::FileRead>( tracy::FileRead::Open( fn ) );
if( f )
{
loadThread = std::thread( [&view, f, &badVer, fixedWidth, smallFont, bigFont] {
try
{
view = std::make_unique<tracy::View>( *f, fixedWidth, smallFont, bigFont, SetWindowTitleCallback );
}
catch( const tracy::UnsupportedVersion& e )
{
badVer.state = tracy::BadVersionState::UnsupportedVersion;
badVer.version = e.version;
}
catch( const tracy::LegacyVersion& e )
{
badVer.state = tracy::BadVersionState::LegacyVersion;
badVer.version = e.version;
}
} );
}
}
catch( const tracy::NotTracyDump& )
{
badVer.state = tracy::BadVersionState::BadFile;
}
}
}
if( badVer.state != tracy::BadVersionState::Ok )
{
if( loadThread.joinable() ) { loadThread.join(); }
tracy::BadVersion( badVer );
}
if( !clients.empty() )
{
ImGui::Separator();
ImGui::TextUnformatted( "Discovered clients:" );
ImGui::Separator();
static bool widthSet = false;
ImGui::Columns( 3 );
if( !widthSet )
{
widthSet = true;
const auto w = ImGui::GetWindowWidth();
ImGui::SetColumnWidth( 0, w * 0.35f );
ImGui::SetColumnWidth( 1, w * 0.175f );
ImGui::SetColumnWidth( 2, w * 0.425f );
}
std::lock_guard<std::mutex> lock( resolvLock );
for( auto& v : clients )
{
const bool badProto = v.second.protocolVersion != tracy::ProtocolVersion;
bool sel = false;
const auto& name = resolvMap.find( v.second.address );
assert( name != resolvMap.end() );
ImGuiSelectableFlags flags = ImGuiSelectableFlags_SpanAllColumns;
if( badProto ) flags |= ImGuiSelectableFlags_Disabled;
if( ImGui::Selectable( name->second.c_str(), &sel, flags ) && !loadThread.joinable() )
{
view = std::make_unique<tracy::View>( v.second.address.c_str(), port, fixedWidth, smallFont, bigFont, SetWindowTitleCallback );
}
ImGui::NextColumn();
const auto acttime = ( v.second.activeTime + ( time - v.second.time ) / 1000 ) * 1000000000ll;
if( badProto )
{
tracy::TextDisabledUnformatted( tracy::TimeToString( acttime ) );
}
else
{
ImGui::TextUnformatted( tracy::TimeToString( acttime ) );
}
ImGui::NextColumn();
if( badProto )
{
tracy::TextDisabledUnformatted( v.second.procName.c_str() );
}
else
{
ImGui::TextUnformatted( v.second.procName.c_str() );
}
ImGui::NextColumn();
}
ImGui::EndColumns();
}
ImGui::End();
}
else
{
if( broadcastListen )
{
broadcastListen.reset();
clients.clear();
}
if( loadThread.joinable() ) loadThread.join();
view->NotifyRootWindowSize( display_w, display_h );
if( !view->Draw() )
{
viewShutdown = ViewShutdown::True;
loadThread = std::thread( [&viewShutdown, view = std::move( view )] () mutable {
view.reset();
viewShutdown = ViewShutdown::Join;
} );
}
}
auto& progress = tracy::Worker::GetLoadProgress();
auto totalProgress = progress.total.load( std::memory_order_relaxed );
if( totalProgress != 0 )
{
ImGui::OpenPopup( "Loading trace..." );
}
if( ImGui::BeginPopupModal( "Loading trace...", nullptr, ImGuiWindowFlags_AlwaysAutoResize ) )
{
tracy::TextCentered( ICON_FA_HOURGLASS_HALF );
time += io.DeltaTime;
tracy::DrawWaitingDots( time );
auto currProgress = progress.progress.load( std::memory_order_relaxed );
if( totalProgress == 0 )
{
ImGui::CloseCurrentPopup();
totalProgress = currProgress;
}
switch( currProgress )
{
case tracy::LoadProgress::Initialization:
ImGui::TextUnformatted( "Initialization..." );
break;
case tracy::LoadProgress::Locks:
ImGui::TextUnformatted( "Locks..." );
break;
case tracy::LoadProgress::Messages:
ImGui::TextUnformatted( "Messages..." );
break;
case tracy::LoadProgress::Zones:
ImGui::TextUnformatted( "CPU zones..." );
break;
case tracy::LoadProgress::GpuZones:
ImGui::TextUnformatted( "GPU zones..." );
break;
case tracy::LoadProgress::Plots:
ImGui::TextUnformatted( "Plots..." );
break;
case tracy::LoadProgress::Memory:
ImGui::TextUnformatted( "Memory..." );
break;
case tracy::LoadProgress::CallStacks:
ImGui::TextUnformatted( "Call stacks..." );
break;
case tracy::LoadProgress::FrameImages:
ImGui::TextUnformatted( "Frame images..." );
break;
case tracy::LoadProgress::ContextSwitches:
ImGui::TextUnformatted( "Context switches..." );
break;
case tracy::LoadProgress::ContextSwitchesPerCpu:
ImGui::TextUnformatted( "CPU context switches..." );
break;
default:
assert( false );
break;
}
ImGui::ProgressBar( float( currProgress ) / totalProgress, ImVec2( 200 * dpiScale, 0 ) );
ImGui::TextUnformatted( "Progress..." );
auto subTotal = progress.subTotal.load( std::memory_order_relaxed );
auto subProgress = progress.subProgress.load( std::memory_order_relaxed );
if( subTotal == 0 )
{
ImGui::ProgressBar( 1.f, ImVec2( 200 * dpiScale, 0 ) );
}
else
{
ImGui::ProgressBar( float( subProgress ) / subTotal, ImVec2( 200 * dpiScale, 0 ) );
}
ImGui::EndPopup();
}
switch( viewShutdown )
{
case ViewShutdown::True:
ImGui::OpenPopup( "Capture cleanup..." );
break;
case ViewShutdown::Join:
loadThread.join();
viewShutdown = ViewShutdown::False;
break;
default:
break;
}
if( ImGui::BeginPopupModal( "Capture cleanup...", nullptr, ImGuiWindowFlags_AlwaysAutoResize ) )
{
if( viewShutdown != ViewShutdown::True ) ImGui::CloseCurrentPopup();
tracy::TextCentered( ICON_FA_BROOM );
time += io.DeltaTime;
tracy::DrawWaitingDots( time );
ImGui::Text( "Please wait, cleanup is in progress" );
ImGui::EndPopup();
}
// Rendering
ImGui::Render();
glfwMakeContextCurrent(window);
glViewport(0, 0, display_w, display_h);
glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);
glClear(GL_COLOR_BUFFER_BIT);
ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
glfwMakeContextCurrent(window);
glfwSwapBuffers(window);
if( !glfwGetWindowAttrib( window, GLFW_FOCUSED ) )
{
std::this_thread::sleep_for( std::chrono::milliseconds( 50 ) );
}
}
{
FILE* f = fopen( winPosFile.c_str(), "wb" );
if( f )
{
#ifdef GLFW_MAXIMIZED
uint32_t maximized = glfwGetWindowAttrib( window, GLFW_MAXIMIZED );
if( maximized ) glfwRestoreWindow( window );
#else
uint32_t maximized = 0;
#endif
glfwGetWindowPos( window, &x, &y );
glfwGetWindowSize( window, &w, &h );
uint32_t data[5] = { uint32_t( x ), uint32_t( y ), uint32_t( w ), uint32_t( h ), maximized };
fwrite( data, 1, sizeof( data ), f );
fclose( f );
}
}
// Cleanup
ImGui_ImplOpenGL3_Shutdown();
ImGui_ImplGlfw_Shutdown();
ImGui::DestroyContext();
glfwDestroyWindow(window);
glfwTerminate();
{
FILE* f = fopen( connHistFile.c_str(), "wb" );
if( f )
{
uint64_t sz = uint64_t( connHistMap.size() );
fwrite( &sz, 1, sizeof( uint64_t ), f );
for( auto& v : connHistMap )
{
sz = uint64_t( v.first.size() );
fwrite( &sz, 1, sizeof( uint64_t ), f );
fwrite( v.first.c_str(), 1, sz, f );
fwrite( &v.second, 1, sizeof( v.second ), f );
}
fclose( f );
}
}
return 0;
}