- Available C++ Libraries FAQ - 2 Updates
- Windows does overcommit stacks ! - 1 Update
- Vector Fractal Bloom... - 1 Update
| Backlands <backlands@riseup.net>: Mar 20 07:43PM On Tue, 14 Mar 2023 23:23:07 -0000 (UTC), Nikki Locke wrote: > form at http://www.trumphurst.com/cpplibs/cppsub.php > Maintainer: Nikki Locke - if you wish to contact me, please use the form > on the website. Thanks, this looks like a cool tool. |
| Big Dick <Big.Dick@olcott.crap>: Mar 20 10:29PM On 20/03/2023 19:43, Backlands wrote: > Thanks, this looks like a cool tool. Only if the libraries are updated regularly and new ones added. There is no sign of any of this. |
| Bonita Montero <Bonita.Montero@gmail.com>: Mar 20 06:45PM +0100 Here's another proof that Windows does overcommit stacks: #include <Windows.h> #include <iostream> #include <sstream> #pragma warning(disable: 6387) // parameter ... could ne null using namespace std; int main( int argc, char **argv ) { auto stackThread = []( LPVOID lpvThreadParam ) -> DWORD { char const *stackTop, *stackBottom; GetCurrentThreadStackLimits( &(ULONG_PTR &)stackBottom, &(ULONG_PTR &)stackTop ); SYSTEM_INFO si; GetSystemInfo( &si ); MEMORY_BASIC_INFORMATION mbi; auto query = [&]( char const *p ) -> char const * { if( VirtualQuery( p, &mbi, sizeof mbi ) != sizeof mbi ) ExitProcess( EXIT_FAILURE ); return (char *)mbi.AllocationBase; }; char const *base = query( stackBottom ), *p; do { cout << mbi.RegionSize / si.dwPageSize << ": "; unsigned n = 0; auto append = [&]<typename ... T>( T &&... values ) { if( n++ ) cout << ", "; ((cout << values), ...); }; if( mbi.State != MEM_FREE ) if( mbi.State == MEM_COMMIT ) append( "comitted" ); else if( mbi.State == MEM_RESERVE ) append( "reserved" ); else append( "S: 0x", hex, mbi.State ); if( !mbi.Protect ) append( "unacessible" ); else if( mbi.Protect & PAGE_GUARD ) append( "guard page" ); else if( mbi.Protect == PAGE_READWRITE ) append( "read-write" ); else append( "P: 0x", hex, mbi.Protect ); cout << endl; p = (char *)mbi.BaseAddress + mbi.RegionSize; } while( query( p ) == base ); return 123; }; HANDLE hThread = CreateThread( nullptr, 0x100000, stackThread, (void *)(ptrdiff_t)(argc >= 2), STACK_SIZE_PARAM_IS_A_RESERVATION, nullptr); WaitForSingleObject( hThread, INFINITE ); CloseHandle( hThread ); return 0; } This prints the attributes of the pages in the range of the stack. |
| "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com>: Mar 19 10:33PM -0700 On 5/12/2022 12:16 PM, Chris M. Thomasson wrote: > Using my experimental vector field to generate a fractal formation. Here > is generation two: > https://fractalforums.org/gallery/1612-120522191048.png Fun with vector fields... https://fractalforums.org/gallery/1612-200323053241.jpeg |
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