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tracy/capture/src/capture.cpp

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C++
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#ifdef _WIN32
# include <windows.h>
# include <io.h>
#else
# include <unistd.h>
#endif
#include <atomic>
#include <chrono>
#include <inttypes.h>
#include <mutex>
#include <signal.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include "../../public/common/TracyProtocol.hpp"
#include "../../public/common/TracyStackFrames.hpp"
#include "../../server/TracyFileWrite.hpp"
#include "../../server/TracyMemory.hpp"
#include "../../server/TracyPrint.hpp"
#include "../../server/TracySysUtil.hpp"
#include "../../server/TracyWorker.hpp"
#ifdef _WIN32
# include "../../getopt/getopt.h"
#endif
// This atomic is written by a signal handler (SigInt). Traditionally that would
// have had to be `volatile sig_atomic_t`, and annoyingly, `bool` was
// technically not allowed there, even though in practice it would work.
// The good thing with C++11 atomics is that we can use atomic<bool> instead
// here and be on the actually supported path.
static std::atomic<bool> s_disconnect { false };
void SigInt( int )
{
// Relaxed order is closest to a traditional `volatile` write.
// We don't need stronger ordering since this signal handler doesn't do
// anything else that would need to be ordered relatively to this.
s_disconnect.store(true, std::memory_order_relaxed);
}
static bool s_isStdoutATerminal = false;
void InitIsStdoutATerminal() {
#ifdef _WIN32
s_isStdoutATerminal = _isatty( fileno( stdout ) );
#else
s_isStdoutATerminal = isatty( fileno( stdout ) );
#endif
}
bool IsStdoutATerminal() { return s_isStdoutATerminal; }
#define ANSI_RESET "\033[0m"
#define ANSI_BOLD "\033[1m"
#define ANSI_BLACK "\033[30m"
#define ANSI_RED "\033[31m"
#define ANSI_GREEN "\033[32m"
#define ANSI_YELLOW "\033[33m"
#define ANSI_BLUE "\033[34m"
#define ANSI_MAGENTA "\033[35m"
#define ANSI_CYAN "\033[36m"
#define ANSI_ERASE_LINE "\033[2K"
// Like printf, but if stdout is a terminal, prepends the output with
// the given `ansiEscape` and appends ANSI_RESET.
void AnsiPrintf( const char* ansiEscape, const char* format, ... ) {
if( IsStdoutATerminal() )
{
// Prepend ansiEscape and append ANSI_RESET.
char buf[256];
va_list args;
va_start( args, format );
vsnprintf( buf, sizeof buf, format, args );
va_end( args );
printf( "%s%s" ANSI_RESET, ansiEscape, buf );
}
else
{
// Just a normal printf.
va_list args;
va_start( args, format );
vfprintf( stdout, format, args );
va_end( args );
}
}
[[noreturn]] void Usage()
{
printf( "Usage: capture -o output.tracy [-a address] [-p port] [-f] [-s seconds] [-m memlimit]\n" );
exit( 1 );
}
int main( int argc, char** argv )
{
#ifdef _WIN32
if( !AttachConsole( ATTACH_PARENT_PROCESS ) )
{
AllocConsole();
SetConsoleMode( GetStdHandle( STD_OUTPUT_HANDLE ), 0x07 );
}
#endif
InitIsStdoutATerminal();
bool overwrite = false;
const char* address = "127.0.0.1";
const char* output = nullptr;
int port = 8086;
int seconds = -1;
int64_t memoryLimit = -1;
int c;
while( ( c = getopt( argc, argv, "a:o:p:fs:m:" ) ) != -1 )
{
switch( c )
{
case 'a':
address = optarg;
break;
case 'o':
output = optarg;
break;
case 'p':
port = atoi( optarg );
break;
case 'f':
overwrite = true;
break;
case 's':
seconds = atoi(optarg);
break;
case 'm':
memoryLimit = std::clamp( atoll( optarg ), 1ll, 999ll ) * tracy::GetPhysicalMemorySize() / 100;
break;
default:
Usage();
break;
}
}
if( !address || !output ) Usage();
struct stat st;
if( stat( output, &st ) == 0 && !overwrite )
{
printf( "Output file %s already exists! Use -f to force overwrite.\n", output );
return 4;
}
FILE* test = fopen( output, "wb" );
if( !test )
{
printf( "Cannot open output file %s for writing!\n", output );
return 5;
}
fclose( test );
unlink( output );
printf( "Connecting to %s:%i...", address, port );
fflush( stdout );
tracy::Worker worker( address, port, memoryLimit );
while( !worker.HasData() )
{
const auto handshake = worker.GetHandshakeStatus();
if( handshake == tracy::HandshakeProtocolMismatch )
{
printf( "\nThe client you are trying to connect to uses incompatible protocol version.\nMake sure you are using the same Tracy version on both client and server.\n" );
return 1;
}
if( handshake == tracy::HandshakeNotAvailable )
{
printf( "\nThe client you are trying to connect to is no longer able to sent profiling data,\nbecause another server was already connected to it.\nYou can do the following:\n\n 1. Restart the client application.\n 2. Rebuild the client application with on-demand mode enabled.\n" );
return 2;
}
if( handshake == tracy::HandshakeDropped )
{
printf( "\nThe client you are trying to connect to has disconnected during the initial\nconnection handshake. Please check your network configuration.\n" );
return 3;
}
std::this_thread::sleep_for( std::chrono::milliseconds( 100 ) );
}
printf( "\nQueue delay: %s\nTimer resolution: %s\n", tracy::TimeToString( worker.GetDelay() ), tracy::TimeToString( worker.GetResolution() ) );
#ifdef _WIN32
signal( SIGINT, SigInt );
#else
struct sigaction sigint, oldsigint;
memset( &sigint, 0, sizeof( sigint ) );
sigint.sa_handler = SigInt;
sigaction( SIGINT, &sigint, &oldsigint );
#endif
const auto firstTime = worker.GetFirstTime();
auto& lock = worker.GetMbpsDataLock();
const auto t0 = std::chrono::high_resolution_clock::now();
while( worker.IsConnected() )
{
// Relaxed order is sufficient here because `s_disconnect` is only ever
// set by this thread or by the SigInt handler, and that handler does
// nothing else than storing `s_disconnect`.
if( s_disconnect.load( std::memory_order_relaxed ) )
{
worker.Disconnect();
// Relaxed order is sufficient because only this thread ever reads
// this value.
s_disconnect.store(false, std::memory_order_relaxed );
break;
}
lock.lock();
const auto mbps = worker.GetMbpsData().back();
const auto compRatio = worker.GetCompRatio();
const auto netTotal = worker.GetDataTransferred();
lock.unlock();
// Output progress info only if destination is a TTY to avoid bloating
// log files (so this is not just about usage of ANSI color codes).
if( IsStdoutATerminal() )
{
const char* unit = "Mbps";
float unitsPerMbps = 1.f;
if( mbps < 0.1f )
{
unit = "Kbps";
unitsPerMbps = 1000.f;
}
AnsiPrintf( ANSI_ERASE_LINE ANSI_CYAN ANSI_BOLD, "\r%7.2f %s", mbps * unitsPerMbps, unit );
printf( " /");
AnsiPrintf( ANSI_CYAN ANSI_BOLD, "%5.1f%%", compRatio * 100.f );
printf( " =");
AnsiPrintf( ANSI_YELLOW ANSI_BOLD, "%7.2f Mbps", mbps / compRatio );
printf( " | ");
AnsiPrintf( ANSI_YELLOW, "Tx: ");
AnsiPrintf( ANSI_GREEN, "%s", tracy::MemSizeToString( netTotal ) );
printf( " | ");
AnsiPrintf( ANSI_RED ANSI_BOLD, "%s", tracy::MemSizeToString( tracy::memUsage.load( std::memory_order_relaxed ) ) );
if( memoryLimit > 0 )
{
printf( " / " );
AnsiPrintf( ANSI_BLUE ANSI_BOLD, "%s", tracy::MemSizeToString( memoryLimit ) );
}
printf( " | ");
AnsiPrintf( ANSI_RED, "%s", tracy::TimeToString( worker.GetLastTime() - firstTime ) );
fflush( stdout );
}
std::this_thread::sleep_for( std::chrono::milliseconds( 100 ) );
if( seconds != -1 )
{
const auto dur = std::chrono::high_resolution_clock::now() - t0;
if( std::chrono::duration_cast<std::chrono::seconds>(dur).count() >= seconds )
{
// Relaxed order is sufficient because only this thread ever reads
// this value.
s_disconnect.store(true, std::memory_order_relaxed );
}
}
}
const auto t1 = std::chrono::high_resolution_clock::now();
const auto& failure = worker.GetFailureType();
if( failure != tracy::Worker::Failure::None )
{
AnsiPrintf( ANSI_RED ANSI_BOLD, "\nInstrumentation failure: %s", tracy::Worker::GetFailureString( failure ) );
auto& fd = worker.GetFailureData();
if( !fd.message.empty() )
{
printf( "\nContext: %s", fd.message.c_str() );
}
if( fd.callstack != 0 )
{
AnsiPrintf( ANSI_BOLD, "\n%sFailure callstack:%s\n" );
auto& cs = worker.GetCallstack( fd.callstack );
int fidx = 0;
for( auto& entry : cs )
{
auto frameData = worker.GetCallstackFrame( entry );
if( !frameData )
{
printf( "%3i. %p\n", fidx++, (void*)worker.GetCanonicalPointer( entry ) );
}
else
{
const auto fsz = frameData->size;
for( uint8_t f=0; f<fsz; f++ )
{
const auto& frame = frameData->data[f];
auto txt = worker.GetString( frame.name );
if( fidx == 0 && f != fsz-1 )
{
auto test = tracy::s_tracyStackFrames;
bool match = false;
do
{
if( strcmp( txt, *test ) == 0 )
{
match = true;
break;
}
}
while( *++test );
if( match ) continue;
}
if( f == fsz-1 )
{
printf( "%3i. ", fidx++ );
}
else
{
AnsiPrintf( ANSI_BLACK ANSI_BOLD, "inl. " );
}
AnsiPrintf( ANSI_CYAN, "%s ", txt );
txt = worker.GetString( frame.file );
if( frame.line == 0 )
{
AnsiPrintf( ANSI_YELLOW, "(%s)", txt );
}
else
{
AnsiPrintf( ANSI_YELLOW, "(%s:%" PRIu32 ")", txt, frame.line );
}
if( frameData->imageName.Active() )
{
AnsiPrintf( ANSI_MAGENTA, " %s\n", worker.GetString( frameData->imageName ) );
}
else
{
printf( "\n" );
}
}
}
}
}
}
printf( "\nFrames: %" PRIu64 "\nTime span: %s\nZones: %s\nElapsed time: %s\nSaving trace...",
worker.GetFrameCount( *worker.GetFramesBase() ), tracy::TimeToString( worker.GetLastTime() - firstTime ), tracy::RealToString( worker.GetZoneCount() ),
tracy::TimeToString( std::chrono::duration_cast<std::chrono::nanoseconds>( t1 - t0 ).count() ) );
fflush( stdout );
auto f = std::unique_ptr<tracy::FileWrite>( tracy::FileWrite::Open( output ) );
if( f )
{
worker.Write( *f, false );
AnsiPrintf( ANSI_GREEN ANSI_BOLD, " done!\n" );
f->Finish();
const auto stats = f->GetCompressionStatistics();
printf( "Trace size %s (%.2f%% ratio)\n", tracy::MemSizeToString( stats.second ), 100.f * stats.second / stats.first );
}
else
{
AnsiPrintf( ANSI_RED ANSI_BOLD, " failed!\n");
}
return 0;
}
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