HP-UX Reference (11i v3 07/02) - 3 Library Functions A-M (vol 6)

_UNW_createContextForSelf(3X) _UNW_createContextForSelf(3X)

(Integrity Systems Only)

EXAMPLES

Example 1

Allocate and initialize an _Unwind_Context

for unwinding the currently running process:

#include <unwind.h>

#include <stdio.h>

_Unwind_Context *uc;

_UNW_ReturnCode retcode;

uc = _UNW_createContextForSelf();

if (uc == NULL) {

/* Code to notify user of low memory problem */

}

if (_UNW_getAlertCode(uc) == _UNW_MEMORY_ALLOCATION_ERROR) {

/* Code to notify user of low memory problem */

}

/* Example use of the _Unwind_Context * follows: */

if ((retcode = _UNW_currentContext(uc)) != _UNW_OK) {

/* Notify user: Couldn’t determine current context. */

}

Example 2

Allocate and initialize an _Unwind_Context

for unwinding a process other than the running process:

#include <unwind.h>

#include <stdio.h>

_Unwind_Context *uc;

_UNW_ReturnCode retcode;

extern _UNW_ReadTargetMem my_mem_reader;

extern _UNW_LoadMapFromIP my_dlmodule_info;

uint64_t target_ip; /* Target process instruction pointer */

uc = _UNW_createContext(my_mem_reader, my_dlmodule_info,1);

if (_UNW_getAlertCode(uc) == _UNW_MEMORY_ALLOCATION_ERROR) {

/* Code to notify user of low memory problem */

}

/* Example use of the _Unwind_Context * follows: */

if ((retcode = _UNW_setIP(uc,target_ip)) != _UNW_OK) {

/* Notify user: Initialization problem */

}

AUTHOR

_UNW_createContextForSelf

, _UNW_createContext, and _UNW_destroyContext

were

developed by HP.