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Exit processing loops when trace has stopped.

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This commit is contained in:
Bartosz Taudul 2020-03-10 18:56:49 +01:00
parent 52132b9a29
commit c7afda2562
1 changed files with 12 additions and 1 deletions
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13
client/TracySysTrace.cpp
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@ -431,6 +431,7 @@ void SysTraceSendExternalName( uint64_t thread )
# include <stdlib.h> # include <stdlib.h>
# include <string.h> # include <string.h>
# include <unistd.h> # include <unistd.h>
# include <atomic>
# include "TracyProfiler.hpp" # include "TracyProfiler.hpp"
@ -451,6 +452,8 @@ static const char SchedWakeup[] = "events/sched/sched_wakeup/enable";
static const char BufferSizeKb[] = "buffer_size_kb"; static const char BufferSizeKb[] = "buffer_size_kb";
static const char TracePipe[] = "trace_pipe"; static const char TracePipe[] = "trace_pipe";
static std::atomic<bool> traceActive { false };
#ifdef __ANDROID__ #ifdef __ANDROID__
static bool TraceWrite( const char* path, size_t psz, const char* val, size_t vsz ) static bool TraceWrite( const char* path, size_t psz, const char* val, size_t vsz )
{ {
@ -546,6 +549,7 @@ bool SysTraceStart( int64_t& samplingPeriod )
#endif #endif
if( !TraceWrite( TracingOn, sizeof( TracingOn ), "1", 2 ) ) return false; if( !TraceWrite( TracingOn, sizeof( TracingOn ), "1", 2 ) ) return false;
traceActive.store( true, std::memory_order_relaxed );
return true; return true;
} }
@ -553,6 +557,7 @@ bool SysTraceStart( int64_t& samplingPeriod )
void SysTraceStop() void SysTraceStop()
{ {
TraceWrite( TracingOn, sizeof( TracingOn ), "0", 2 ); TraceWrite( TracingOn, sizeof( TracingOn ), "0", 2 );
traceActive.store( false, std::memory_order_relaxed );
} }
static uint64_t ReadNumber( const char*& ptr ) static uint64_t ReadNumber( const char*& ptr )
@ -738,6 +743,8 @@ static void ProcessTraceLines( int fd )
for(;;) for(;;)
{ {
if( !traceActive.load( std::memory_order_relaxed ) ) break;
const auto rd = read( fd, line, 64*1024 ); const auto rd = read( fd, line, 64*1024 );
if( rd <= 0 ) break; if( rd <= 0 ) break;
@ -836,7 +843,11 @@ static void ProcessTraceLines( int fd )
for(;;) for(;;)
{ {
while( poll( &pfd, 1, 0 ) <= 0 ) std::this_thread::sleep_for( std::chrono::milliseconds( 10 ) ); while( poll( &pfd, 1, 0 ) <= 0 )
{
if( !traceActive.load( std::memory_order_relaxed ) ) break;
std::this_thread::sleep_for( std::chrono::milliseconds( 10 ) );
}
const auto rd = read( fd, buf, 64*1024 ); const auto rd = read( fd, buf, 64*1024 );
if( rd <= 0 ) break; if( rd <= 0 ) break;