dwarf_finish,
dwarf_object_finish —
free resources associated with a debug
descriptor
DWARF Access Library (libdwarf, -ldwarf)
#include
<libdwarf.h>
int
dwarf_finish(
Dwarf_Debug
dbg,
Dwarf_Error
*err);
int
dwarf_object_finish(
Dwarf_Debug
dbg,
Dwarf_Error
*err);
The
dwarf_finish() and
dwarf_object_finish() functions are used to
release the resources associated with a debug descriptor allocated by a prior
call to
dwarf_init(3)
and
dwarf_object_init(3)
respectively.
Argument
dbg denotes a valid
Dwarf_Debug instance. Argument
err will be used to record error information
in case of an error.
After a call to
dwarf_finish() or
dwarf_object_finish(), the argument
dbg will be invalid and should not be used
further.
For
Dwarf_Debug descriptors opened using
dwarf_init(3), the
application would need to explicitly release the
Elf instance associated with the descriptor
by first retrieving the instance using
dwarf_get_elf(3) and
closing it using
elf_end(3).
These functions return
DW_DLV_OK
if
successful. In case of an error, the functions return
DW_DLV_ERROR
and record additional
information in argument
err.
To deallocate a
Dwarf_Debug instance allocated
using
dwarf_elf_init(3)
use:
Dwarf_Debug dbg;
Dwarf_Error de;
if (dwarf_finish(dbg, &de) != DW_DLV_OK)
errx(EXIT_FAILURE, "dwarf_finish: %s", dwarf_errmsg(de));
To deallocate a
Dwarf_Debug instance allocated
using
dwarf_object_init(3)
use:
Dwarf_Debug dbg;
Dwarf_Error de;
if (dwarf_object_finish(dbg, &de) != DW_DLV_OK)
errx(EXIT_FAILURE, "dwarf_object_finish: %s",
dwarf_errmsg(de));
To deallocate a
Dwarf_Debug instance allocated
using
dwarf_init(3) use:
Dwarf_Debug dbg;
Dward_Error de;
Elf *e;
if (dwarf_get_elf(dbg, &e, &de) != DW_DLV_OK)
errx(EXIT_FAILURE, "dwarf_get_elf: %s", dwarf_errmsg(&de));
if (dwarf_finish(dbg, &de) != DW_DLV_OK)
errx(EXIT_FAILURE, "dwarf_finish: %s", dwarf_errmsg(de));
(void) elf_end(e);
dwarf_elf_init(3),
dwarf_get_elf(3),
dwarf_init(3),
dwarf_object_init(3),
elf_end(3)