csrPlatform.h

   1 // Copyright (C) 2021 Harry Godden (hgn)
   2
   3 // Cross platform (windows/unix) dynamic linking wrapper
   4 //=======================================================================================================================
   5
   6 #ifdef CSR_EXECUTABLE
   7
   8 #if defined(_WIN32) || defined(__CYGWIN__)
   9         #define CSR_WINDOWS
  10         #include <windows.h>
  11    typedef HINSTANCE csr_so;
  12 #else
  13    #define CSR_UNIX
  14    #include <dlfcn.h>
  15         typedef void *csr_so;
  16 #endif
  17
  18 csr_so csr_libopen( const char *name )
  19 {
  20         char path[ 512 ];
  21         strcpy( path, "ext/" );
  22         strcat( path, name );
  23
  24         #ifdef CSR_UNIX
  25                 strcat( path, ".so" );
  26         #else
  27                 strcat( path, ".dll" );
  28         #endif
  29
  30         log_info( "Loading dynamic library (%s)\n", path );
  31
  32         #ifdef CSR_UNIX
  33                 return dlopen( path, RTLD_NOW );
  34         #else
  35                 return LoadLibrary( path );
  36         #endif
  37 }
  38
  39 void *csr_get_proc( csr_so so, const char *name )
  40 {
  41         #ifdef CSR_UNIX
  42                 return dlsym( so, name );
  43         #else
  44                 return (void *)GetProcAddress( so, name );
  45         #endif
  46 }
  47
  48 void csr_libclose( csr_so so )
  49 {
  50         #ifdef CSR_UNIX
  51                 dlclose( so );
  52         #else
  53                 FreeLibrary( so );
  54         #endif
  55 }
  56
  57 void csr_liberr(void)
  58 {
  59         #ifdef CSR_UNIX
  60         log_error( "Could not load that DLL (%s)\n", dlerror() );
  61         #else
  62         log_error( "Could not load that DLL (Windows unkown)\n" );
  63         #endif
  64 }
  65
  66 #endif