82995a8343
Windows shared memory: allow to use custom key. Improve GUI performance on Windows, submit letters in text as a batch (fewer draw-calls) quadruped.py: first try to connect to SHARED_MEMORY, if it fails (<0) use GUI increase Chrome about://tracing json export capacity (press 'p' in Example Browser) UDP physics server: add --port and --sharedMemoryKey command-line arguments PhysicsServerExample: add --sharedMemoryKey command-line option (for VR example too) ExampleBrowser: sleep a few milliseconds if rendering is too fast, use --minUpdateTimeMicroSecs=0 to disable
118 lines
2.7 KiB
C++
118 lines
2.7 KiB
C++
#ifdef _WIN32
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#include "Win32SharedMemory.h"
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#include "Bullet3Common/b3Logging.h"
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#include "Bullet3Common/b3Scalar.h"
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#include <windows.h>
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#include <stdio.h>
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//see also https://msdn.microsoft.com/en-us/library/windows/desktop/aa366551%28v=vs.85%29.aspx
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struct Win32SharedMemoryInteralData
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{
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HANDLE m_hMapFile;
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void* m_buf;
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TCHAR m_szName[1024];
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Win32SharedMemoryInteralData()
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:m_hMapFile(0),
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m_buf(0)
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{
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}
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};
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Win32SharedMemory::Win32SharedMemory()
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{
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m_internalData = new Win32SharedMemoryInteralData;
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}
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Win32SharedMemory::~Win32SharedMemory()
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{
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delete m_internalData;
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}
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void* Win32SharedMemory::allocateSharedMemory(int key, int size, bool allowCreation)
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{
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b3Assert(m_internalData->m_buf==0);
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#ifdef UNICODE
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swprintf_s (m_internalData->m_szName,"MyFileMappingObject%d",key);
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#else
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sprintf(m_internalData->m_szName,"MyFileMappingObject%d",key);
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#endif
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m_internalData->m_hMapFile = OpenFileMapping(
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FILE_MAP_ALL_ACCESS, // read/write access
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FALSE, // do not inherit the name
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m_internalData->m_szName); // name of mapping object
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if (m_internalData->m_hMapFile==NULL)
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{
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if (allowCreation)
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{
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m_internalData->m_hMapFile = CreateFileMapping(
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INVALID_HANDLE_VALUE, // use paging file
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NULL, // default security
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PAGE_READWRITE, // read/write access
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0, // maximum object size (high-order DWORD)
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size, // maximum object size (low-order DWORD)
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m_internalData->m_szName); // name of mapping object
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} else
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{
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b3Warning("Could not create file mapping object (%d).\n",GetLastError());
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return 0;
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}
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}
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m_internalData->m_buf = MapViewOfFile(m_internalData->m_hMapFile, // handle to map object
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FILE_MAP_ALL_ACCESS, // read/write permission
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0,
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0,
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size);
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if (m_internalData->m_buf == NULL)
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{
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b3Warning("Could not map view of file (%d).\n",GetLastError());
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CloseHandle(m_internalData->m_hMapFile);
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return 0;
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}
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return m_internalData->m_buf;
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}
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void Win32SharedMemory::releaseSharedMemory(int key, int size)
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{
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if (m_internalData->m_buf)
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{
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UnmapViewOfFile(m_internalData->m_buf);
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m_internalData->m_buf=0;
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}
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if (m_internalData->m_hMapFile)
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{
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CloseHandle(m_internalData->m_hMapFile);
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m_internalData->m_hMapFile = 0;
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}
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}
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Win32SharedMemoryServer::Win32SharedMemoryServer()
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{
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}
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Win32SharedMemoryServer::~Win32SharedMemoryServer()
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{
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}
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Win32SharedMemoryClient::Win32SharedMemoryClient()
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{
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}
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Win32SharedMemoryClient:: ~Win32SharedMemoryClient()
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{
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}
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#endif //_WIN32
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