Awful snippet for calling awful PogoAutoSweep while still being thread safe with every other function in the program.

gistfile1.txt

#include <pgobootrun.h>
#include <TlHelp32.h>
#pragma comment(lib, "pgobootrun.lib")

//static int threadcount = 0;


inline void sweep()
{
  if( getenv("PGOSWEEP") )  // can't #define this or it will undo PGO update
  {
  		//if( ++threadcount == 5 )
  		{
  			DWORD processId = GetCurrentProcessId();
  			
  			HANDLE hThreadSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPTHREAD, 0);
  
  			THREADENTRY32 threadEntry; 
  			threadEntry.dwSize = sizeof(THREADENTRY32);
  
  			Thread32First(hThreadSnapshot, &threadEntry);
  
  			printf("Suspending everything for pogo sweep\n");
  
  			do
  			{
  				if (threadEntry.th32OwnerProcessID == processId)
  				{
  					HANDLE hThread = OpenThread(THREAD_ALL_ACCESS, FALSE,
  						threadEntry.th32ThreadID);
  
  					if( GetThreadId( hThread ) != GetCurrentThreadId() )
  						SuspendThread(hThread);
  				}
  			} while (Thread32Next(hThreadSnapshot, &threadEntry));
  
  			Sleep(500);
  
  			PogoAutoSweepA("this file suffix breaks VS2012 PGO build script no matter what");
  
  			Thread32First(hThreadSnapshot, &threadEntry);
  
  			do
  			{	
  				if (threadEntry.th32OwnerProcessID == processId)
  				{
  					HANDLE hThread = OpenThread(THREAD_ALL_ACCESS, FALSE,
  						threadEntry.th32ThreadID);
  
  					if( GetThreadId( hThread ) != GetCurrentThreadId() )
  						ResumeThread(hThread);
  				}
  			} while (Thread32Next(hThreadSnapshot, &threadEntry));
  
  			printf("Resuming everything\n");
		}

}