compiler/posixc/__vfork.h

   1 #ifndef __VFORK_H
   2 #define __VFORK_H
   3
   4 /*
   5     Copyright © 2008-2013, The AROS Development Team. All rights reserved.
   6     $Id$
   7 */
   8
   9 #include <exec/types.h>
  10 #include <dos/bptr.h>
  11 #include <exec/exec.h>
  12 #include <setjmp.h>
  13 #include <sys/types.h>
  14 #include <aros/startup.h>
  15
  16 #include "__fdesc.h"
  17
  18 struct PosixCIntBase;
  19
  20 struct vfork_data
  21 {
  22     struct vfork_data *prev;
  23     jmp_buf vfork_jmp;                      /* jmp to place where vfork was called */
  24
  25     struct Task *parent;
  26     int *parent_olderrorptr;
  27     jmp_buf parent_oldexitjmp;
  28     jmp_buf parent_newexitjmp;
  29     BYTE parent_signal;
  30     BYTE parent_state;
  31     struct PosixCIntBase *parent_posixcbase;
  32     struct StdCBase *parent_stdcbase;
  33     int parent_cd_changed;
  34     BPTR parent_cd_lock;
  35     BPTR parent_curdir;
  36     struct __env_item *parent_env_list;
  37     APTR parent_internalpool;
  38     int parent_numslots;
  39     fdesc **parent_fd_array;
  40     int parent_flags;
  41     char *parent_upathbuf;
  42
  43     struct Task *child;
  44     int child_executed;
  45     int child_error, child_errno;
  46     BYTE child_signal;
  47     BYTE child_state;
  48     struct PosixCIntBase *child_posixcbase;
  49
  50     const char *exec_filename;
  51     char *const *exec_argv;
  52     char *const *exec_envp;
  53     APTR exec_id;
  54 };
  55
  56 pid_t __vfork(jmp_buf env);
  57 void vfork_longjmp (jmp_buf env, int val);
  58
  59 #define PARENT_STATE_EXIT_CALLED            (1L << 0)
  60 #define PARENT_STATE_EXEC_CALLED            (1L << 1)
  61 #define PARENT_STATE_EXEC_DO_FINISHED       (1L << 2)
  62 #define PARENT_STATE_STOPPED_PRETENDING     (1L << 3)
  63
  64 #define CHILD_STATE_SETUP_FAILED            (1L << 0)
  65 #define CHILD_STATE_SETUP_FINISHED          (1L << 1)
  66 #define CHILD_STATE_EXEC_PREPARE_FINISHED   (1L << 2)
  67 #define CHILD_STATE_UDATA_NOT_USED          (1L << 3)
  68
  69 #define DSTATE(x)   //x
  70
  71 #define PRINTSTATE  \
  72     DSTATE(bug("[PrintState]: Parent = %d, Child = %d, Line %d\n", udata->parent_state, udata->child_state, __LINE__));
  73
  74 #define SETPARENTSTATE(a) \
  75     udata->parent_state = a
  76
  77 #define ASSERTPARENTSTATE(a) \
  78     DSTATE({                                \
  79         if (!(udata->parent_state & (a)))   \
  80             bug("Parent state assertion failed, was %d, expected %d\n", udata->parent_state, (a));\
  81     })
  82
  83 #define SETCHILDSTATE(a) \
  84     udata->child_state = a
  85
  86 #define ASSERTCHILDSTATE(a) \
  87     DSTATE({                                \
  88         if (!(udata->child_state & (a)))    \
  89             bug("Child state assertion failed, was %d, expected %d\n", udata->parent_state, (a));\
  90     })
  91
  92 #endif /* __VFORK_H */