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root/radiance/ray/src/common/rtprocess.h
Revision: 3.11
Committed: Sat Oct 23 18:55:52 2004 UTC (19 years, 5 months ago) by schorsch
Content type: text/plain
Branch: MAIN
CVS Tags: rad3R7P2, rad3R7P1, rad4R1, rad4R0, rad3R6P1, rad3R8, rad3R9
Changes since 3.10: +3 -1 lines
Log Message:
Compatibility fixes as suggested by Siegbert Debatin.

File Contents

# Content
1 /* RCSid $Id: rtprocess.h,v 3.10 2004/01/28 12:42:22 schorsch Exp $ */
2 /*
3 * rtprocess.h
4 * Routines to communicate with separate process via dual pipes
5 *
6 * WARNING: On Windows, there's a system header named <process.h>.
7 */
8 #ifndef _RAD_PROCESS_H_
9 #define _RAD_PROCESS_H_
10
11 #include <errno.h>
12 #ifdef _WIN32
13 #include <windows.h> /* DWORD etc. */
14 #include <stdio.h>
15 typedef DWORD RT_PID;
16 #include <process.h> /* getpid() and others */
17 #define nice(inc) win_nice(inc)
18
19 #ifdef __cplusplus
20 extern "C" {
21 #endif
22 extern FILE *win_popen(char *command, char *type);
23 extern int win_pclose(FILE *p);
24 int win_kill(RT_PID pid, int sig /* ignored */);
25 #define kill(pid,sig) win_kill(pid,sig)
26 #ifdef __cplusplus
27 }
28 #endif
29
30 #define popen(cmd,mode) win_popen(cmd,mode)
31 #define pclose(p) win_pclose(p)
32 #else
33 #include <stdio.h>
34 #include <sys/param.h>
35 #include <sys/types.h>
36 typedef pid_t RT_PID;
37 #endif
38
39 #include "paths.h"
40
41 #ifdef __cplusplus
42 extern "C" {
43 #endif
44
45 /* On Windows, a process ID is a DWORD. That might actually be the
46 same thing as an int, but it's better not to assume anything.
47
48 This means that we shouldn't rely on PIDs and file descriptors
49 being the same type, so we have to describe processes with a struct,
50 instead of the original int[3]. For that purpose, we typedef a
51 platform independent RT_PID.
52 */
53
54
55 #ifndef PIPE_BUF
56 #ifdef PIPSIZ
57 #define PIPE_BUF PIPSIZ
58 #else
59 #ifdef PIPE_MAX
60 #define PIPE_BUF PIPE_MAX
61 #else
62 #define PIPE_BUF 512 /* hyperconservative */
63 #endif
64 #endif
65 #endif
66
67 typedef struct {
68 int r; /* read handle */
69 int w; /* write handle */
70 int running; /* doing something */
71 RT_PID pid; /* process ID */
72 } SUBPROC;
73
74 #define SP_INACTIVE {-1,-1,0,0} /* for static initializations */
75
76 extern int open_process(SUBPROC *pd, char *av[]);
77 extern int close_process(SUBPROC *pd);
78 extern int process(SUBPROC *pd, char *recvbuf, char *sendbuf, int nbr, int nbs);
79 extern int readbuf(int fd, char *bpos, int siz);
80 extern int writebuf(int fd, char *bpos, int siz);
81
82 #ifdef _WIN32
83 /* any non-negative increment will send the process to IDLE_PRIORITY_CLASS. */
84 extern int win_nice(int inc);
85 #endif
86
87
88 #ifdef __cplusplus
89 }
90 #endif
91 #endif /* _RAD_PROCESS_H_ */
92