sys_shared.c

   1
   2 #include "quakedef.h"
   3 # include <time.h>
   4 #ifndef WIN32
   5 # include <unistd.h>
   6 # include <fcntl.h>
   7 # include <dlfcn.h>
   8 #endif
   9
  10 static char sys_timestring[128];
  11 char *Sys_TimeString(const char *timeformat)
  12 {
  13         time_t mytime = time(NULL);
  14         strftime(sys_timestring, sizeof(sys_timestring), timeformat, localtime(&mytime));
  15         return sys_timestring;
  16 }
  17
  18
  19 extern qboolean host_shuttingdown;
  20 void Sys_Quit (void)
  21 {
  22         host_shuttingdown = true;
  23         Host_Shutdown();
  24         exit(0);
  25 }
  26
  27 /*
  28 ===============================================================================
  29
  30 DLL MANAGEMENT
  31
  32 ===============================================================================
  33 */
  34
  35 qboolean Sys_LoadLibrary (const char** dllnames, dllhandle_t* handle, const dllfunction_t *fcts)
  36 {
  37         const dllfunction_t *func;
  38         dllhandle_t dllhandle = 0;
  39         unsigned int i;
  40
  41         if (handle == NULL)
  42                 return false;
  43
  44         // Initializations
  45         for (func = fcts; func && func->name != NULL; func++)
  46                 *func->funcvariable = NULL;
  47
  48         // Try every possible name
  49         for (i = 0; dllnames[i] != NULL; i++)
  50         {
  51 #ifdef WIN32
  52                 dllhandle = LoadLibrary (dllnames[i]);
  53 #else
  54                 dllhandle = dlopen (dllnames[i], RTLD_LAZY);
  55 #endif
  56                 if (dllhandle)
  57                         break;
  58
  59                 Con_Printf ("Can't load \"%s\".\n", dllnames[i]);
  60         }
  61
  62         // No DLL found
  63         if (! dllhandle)
  64                 return false;
  65
  66         Con_Printf("\"%s\" loaded.\n", dllnames[i]);
  67
  68         // Get the function adresses
  69         for (func = fcts; func && func->name != NULL; func++)
  70                 if (!(*func->funcvariable = (void *) Sys_GetProcAddress (dllhandle, func->name)))
  71                 {
  72                         Con_Printf ("Missing function \"%s\" - broken library!\n", func->name);
  73                         Sys_UnloadLibrary (&dllhandle);
  74                         return false;
  75                 }
  76
  77         *handle = dllhandle;
  78         return true;
  79 }
  80
  81 void Sys_UnloadLibrary (dllhandle_t* handle)
  82 {
  83         if (handle == NULL || *handle == NULL)
  84                 return;
  85
  86 #ifdef WIN32
  87         FreeLibrary (*handle);
  88 #else
  89         dlclose (*handle);
  90 #endif
  91
  92         *handle = NULL;
  93 }
  94
  95 void* Sys_GetProcAddress (dllhandle_t handle, const char* name)
  96 {
  97 #ifdef WIN32
  98         return (void *)GetProcAddress (handle, name);
  99 #else
 100         return (void *)dlsym (handle, name);
 101 #endif
 102 }
 103