--- ray/src/common/rtprocess.h	2003/07/14 22:23:59	3.4
+++ ray/src/common/rtprocess.h	2004/01/28 12:42:22	3.10
@@ -1,4 +1,4 @@
-/* RCSid $Id: rtprocess.h,v 3.4 2003/07/14 22:23:59 schorsch Exp $ */
+/* RCSid $Id: rtprocess.h,v 3.10 2004/01/28 12:42:22 schorsch Exp $ */
 /*
  *   rtprocess.h 
  *   Routines to communicate with separate process via dual pipes
@@ -11,10 +11,27 @@
 #include  <errno.h>
 #ifdef _WIN32
   #include <windows.h> /* DWORD etc. */
-  typedef DWORD pid_t;
+  #include <stdio.h>
+  typedef DWORD RT_PID;
   #include <process.h> /* getpid() and others */
+  #define nice(inc) win_nice(inc)
+
+  #ifdef __cplusplus
+  extern "C" {
+  #endif
+  extern FILE *win_popen(char *command, char *type);
+  extern int win_pclose(FILE *p);
+  #ifdef __cplusplus
+  }
+  #endif
+
+  #define popen(cmd,mode) win_popen(cmd,mode)
+  #define pclose(p) win_pclose(p)
 #else
+  #include <stdio.h>
   #include <sys/param.h>
+  #include <sys/types.h>
+  typedef pid_t RT_PID;
 #endif
 
 #include "paths.h"
@@ -28,12 +45,8 @@ extern "C" {
 
    This means that we shouldn't rely on PIDs and file descriptors
    being the same type, so we have to describe processes with a struct,
-   instead of the original int[3]. To keep things simple, we typedef
-   the posix pid_t on those systems that don't have it already.
-
-   Some older Windows systems use negative PIDs. Open_process() and
-   close_process() will convert those to positive values during
-   runtime, so that client modules can still use -1 as invalid PID.
+   instead of the original int[3]. For that purpose, we typedef a
+   platform independent RT_PID.
 */
 
 
@@ -53,7 +66,7 @@ typedef struct {
 	int r; /* read handle */
 	int w; /* write handle */
 	int running; /* doing something */
-	pid_t pid; /* process ID */
+	RT_PID pid; /* process ID */
 } SUBPROC;
 
 #define SP_INACTIVE {-1,-1,0,0} /* for static initializations */
@@ -63,6 +76,11 @@ extern int close_process(SUBPROC *pd);
 extern int process(SUBPROC *pd, char *recvbuf, char *sendbuf, int nbr, int nbs);
 extern int readbuf(int fd, char *bpos, int siz);
 extern int writebuf(int fd, char *bpos, int siz);
+
+#ifdef _WIN32
+/* any non-negative increment will send the process to IDLE_PRIORITY_CLASS. */
+extern int win_nice(int inc);
+#endif
 
 
 #ifdef __cplusplus