Hi,
I have some code which shares data with shared memory. To that end, I'm using boost::interprocess:managed_shared_memory. Without respect to scope and functions, what I have is roughly:
boost::interprocess::managed_shared_memory sharedMem(boost::interprocess::create_only, "SharedMemory", 4096);
//later on
u_int8_t* dataSegment = sharedMemory.construct("data")[5](0);
char* string1 = sharedMemory.construct<char>("String 1")[50]('\0');
// other stuff
// placing stuff in the data segment
for(int i(0); i < 5; i++) dataSegment[i] = anEarlierArray[i];
// then, in other process read the data Segment
char ary[5];
for(int i(0); i< 5; i++) ary[i] = dataSegment.first[i];
For whatever reason I couldn't simply access through dataSegment[n] notation. The weirdest thing is, the data is being read back to me in the reverse order that it should be. For example, if [0x2,0x4,0x7,0x1] is written I read it back as [0x1,0x7,0x4,x02] even though I'm writing and reading in the same order. Why is this? What is it I'm missing about using shared memory?
Thanks,
Andy
