64 lines
1.6 KiB
C
64 lines
1.6 KiB
C
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/* childinfo.h: shared child info for cygwin
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Copyright 2000 Red Hat, Inc.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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enum
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{
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PROC_MAGIC = 0xaf08f000,
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PROC_FORK = PROC_MAGIC + 1,
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PROC_EXEC = PROC_MAGIC + 2,
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PROC_SPAWN = PROC_MAGIC + 3,
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PROC_FORK1 = PROC_MAGIC + 4 // Newer versions provide stack
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// location information
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};
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#define PROC_MAGIC_MASK 0xff00f000
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#define PROC_MAGIC_GENERIC 0xaf00f000
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#define PROC_MAGIC_VER_MASK 0x0ff0000
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#define EXEC_MAGIC_SIZE sizeof(child_info)
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class child_info
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{
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public:
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DWORD zero[1]; // must be zeroed
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DWORD cb; // size of this record
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DWORD type; // type of record
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int cygpid; // cygwin pid of child process
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HANDLE subproc_ready; // used for synchronization with parent
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HANDLE shared_h;
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HANDLE console_h;
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HANDLE parent_alive; // handle of thread used to track children
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HANDLE myself_pinfo;
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~child_info ()
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{
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if (myself_pinfo)
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CloseHandle (myself_pinfo);
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}
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};
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class child_info_fork: public child_info
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{
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public:
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HANDLE forker_finished;// for synchronization with child
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DWORD stacksize; // size of parent stack
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void *heaptop;
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void *heapbase;
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void *heapptr;
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jmp_buf jmp; // where child will jump to
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void *stacktop; // location of top of parent stack
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void *stackbottom; // location of bottom of parent stack
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};
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void __stdcall init_child_info (DWORD, child_info *, int, HANDLE);
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extern child_info_fork *child_proc_info;
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/* non-NULL if this process is a child of a cygwin process */
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extern HANDLE parent_alive;
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