simgear/nasal/thread-win32.c

   1 #ifdef _WIN32
   2
   3 #include <windows.h>
   4
   5 #define MAX_SEM_COUNT 1024 // What are the tradeoffs with this value?
   6
   7 void* naNewLock()
   8 {
   9     LPCRITICAL_SECTION lock = malloc(sizeof(CRITICAL_SECTION));
  10     InitializeCriticalSection(lock);
  11     return lock;
  12 }
  13
  14 void  naLock(void* lock)   { EnterCriticalSection((LPCRITICAL_SECTION)lock); }
  15 void  naUnlock(void* lock) { LeaveCriticalSection((LPCRITICAL_SECTION)lock); }
  16 void naFreeLock(void* lock) { free(lock); }
  17 void* naNewSem()           { return CreateSemaphore(0, 0, MAX_SEM_COUNT, 0); }
  18 void  naSemDown(void* sem) { WaitForSingleObject((HANDLE)sem, INFINITE); }
  19 void  naSemUp(void* sem, int count) { ReleaseSemaphore(sem, count, 0); }
  20 void naFreeSem(void* sem) { ReleaseSemaphore(sem, 1, 0); }
  21
  22 #endif
  23
  24 extern int GccWarningWorkaround_IsoCForbidsAnEmptySourceFile;