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CREATE_PROCESS_DEBUG_INFO info  Overview  Group

The CREATE_PROCESS_DEBUG_INFO structure contains process creation information that can be used by a debugger.

typedef struct _CREATE_PROCESS_DEBUG_INFO { // cpdi 

    HANDLE hFile; 

    HANDLE hProcess; 

    HANDLE hThread; 

    LPVOID lpBaseOfImage; 

    DWORD dwDebugInfoFileOffset; 

    DWORD nDebugInfoSize; 

    LPVOID lpThreadLocalBase; 

    LPTHREAD_START_ROUTINE lpStartAddress; 

    LPVOID lpImageName; 

    WORD fUnicode; 

} CREATE_PROCESS_DEBUG_INFO; 

 

Members

hFile
Identifies an open handle of the processís image file. If this member is NULL, the handle is not valid. Otherwise, the debugger can use the member to read from and write to the image file.
hProcess
Identifies an open handle of the process. If this member is NULL, the handle is not valid. Otherwise, the debugger can use the member to read from and write to the processís memory.
hThread
Identifies an open handle of the initial thread of the process identified by the hProcess member. If hThread is NULL, the handle is not valid. Otherwise, the debugger has THREAD_GET_CONTEXT, THREAD_SET_CONTEXT, and THREAD_SUSPEND_RESUME access to the thread, allowing the debugger to read from and write to the registers of the thread and to control execution of the thread.
lpBaseOfImage
Points to the base address of the executable image that the process is running.
dwDebugInfoFileOffset
Specifies the offset to the debugging information in the file identified by the hFile member. The kernel expects the debugging information to be in Microsoft® CodeView® version 4.0 format. This format is currently a derivative of COFF (Common Object File Format).
nDebugInfoSize
Specifies the size, in bytes, of the debugging information in the file. If this value is zero, there is no debugging information.
lpThreadLocalBase
Points to a block of data. At offset 0x2C into this block is another pointer, called ThreadLocalStoragePointer, that points to an array of per-module thread local storage blocks. This gives a debugger access to per-thread data in the threads of the process being debugged using the same algorithms that a compiler would use.
lpStartAddress
Points to the starting address of the thread. This value may only be an approximation of the threadís starting address, because any application with appropriate access to the thread can change the threadís context by using the SetThreadContext function.
lpImageName
Points to the filename associated with the hFile parameter. This parameter may be NULL, or it may contain the address of a string pointer in the address space of the process being debugged. That address may, in turn, either be NULL or point to the actual filename. If fUnicode is a nonzero value, the name string is Unicode; otherwise, it is ANSI.

This member is strictly optional. Debuggers must be prepared to handle the case where lpImageName is NULL or *lpImageName (in the address space of the process being debugged) is NULL. Specifically, Windows does not provide an image name for a create process event, and will not likely pass an image name for the first DLL event. Windows also does not provide this information in the case of debug events that originate from a call to the DebugActiveProcess function.

fUnicode
Indicates whether a file name specified by the lpImageName member is Unicode or ANSI. A nonzero value indicates Unicode; zero indicates ANSI.

See Also

CREATE_THREAD_DEBUG_INFO, DebugActiveProcess, DEBUG_EVENT, LOAD_DLL_DEBUG_INFO, SetThreadContext

See also:


file: /Techref/os/win/api/win32/struc/src/str02_21.htm, 4KB, , updated: 2000/4/7 12:20, local time: 2022/5/23 01:16,
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