DWARF_DEALLOC(3)

💖 DWARF_DEALLOC(3) 💖

okay bestie, welcome to DWARF_DEALLOC(3) from the Library Functions Manual ✨ This one is all about releasing resources in libdwarf, plus a whole little squad of compatibility functions that are lowkey just chilling. Let’s get into it 🫶

🎀 NAME 🎀

• dwarf_dealloc
• dwarf_fde_cie_list_dealloc
• dwarf_funcs_dealloc
• dwarf_globals_dealloc
• dwarf_pubtypes_dealloc
• dwarf_ranges_dealloc
• dwarf_srclines_dealloc
• dwarf_types_dealloc
• dwarf_vars_dealloc
• dwarf_weaks_dealloc

— release resources 💅

📚 LIBRARY 📚

DWARF Access Library (libdwarf, -ldwarf) 💖

✨ SYNOPSIS ✨

#include <libdwarf.h>

void
dwarf_dealloc(Dwarf_Debug dbg, Dwarf_Ptr ptr, Dwarf_Unsigned type);

dwarf_fde_cie_list_dealloc(Dwarf_Debug dbg, Dwarf_Cie *cie_list,
    Dwarf_Signed cie_count, Dwarf_Fde *fde_list,
    Dwarf_Signed fde_count);

void
dwarf_funcs_dealloc(Dwarf_Debug dbg, Dwarf_Func *funcs,
    Dwarf_Signed funccount);

void
dwarf_globals_dealloc(Dwarf_Debug dbg, Dwarf_Global *globals,
    Dwarf_Signed globalcount);

void
dwarf_pubtypes_dealloc(Dwarf_Debug dbg, Dwarf_Type *pubtypes,
    Dwarf_Signed pubtypecount);

void
dwarf_ranges_dealloc(Dwarf_Debug dbg, Dwarf_Ranges *ranges,
    Dwarf_Signed rangecount);

void
dwarf_srclines_dealloc(Dwarf_Debug dbg, Dwarf_Line *lines,
    Dwarf_Signed linecount);

void
dwarf_types_dealloc(Dwarf_Debug dbg, Dwarf_Type *types,
    Dwarf_Signed typecount);

void
dwarf_vars_dealloc(Dwarf_Debug dbg, Dwarf_Var *vars,
    Dwarf_Signed varcount);

void
dwarf_weaks_dealloc(Dwarf_Debug dbg, Dwarf_Weak *weaks,
    Dwarf_Signed weakcount);

🧚 DESCRIPTION 🧚

The function dwarf_dealloc() is how applications say “hey bestie, this memory area returned by the DWARF Access Library (libdwarf, -ldwarf) can be safely disposed off now” 💅 Due to the way memory is managed in the current implementation, using dwarf_dealloc() is only necessary for a small set of DWARF types. No cap.

Argument dbg should reference a valid debugging context allocated using dwarf_init(3) ✨

Argument ptr should point to an object or memory area obtained by a prior call to a DWARF(3) function.

Argument type indicates the type of object being deallocated. The indicated type must match that of the object being passed in argument ptr — like, matching energy is mandatory, bestie. Valid values for the type argument are:

• DW_DLA_ABBREV — an object of type Dwarf_Abbrev, as returned by a call to the function dwarf_get_abbrev(3).
• DW_DLA_DIE — an object of type Dwarf_Die, as returned by calls to the functions dwarf_child(3), dwarf_offdie(3) or dwarf_siblingof(3).
• DW_DLA_FRAME_BLOCK — an array of objects of type Dwarf_Frame_op, as returned by a call to the function dwarf_expand_frame_instructions(3).

Calls to dwarf_dealloc() with other values for argument type are no-ops in this implementation 🫠

The functions dwarf_fde_cie_list_dealloc(), dwarf_funcs_dealloc(), dwarf_globals_dealloc(), dwarf_pubtypes_dealloc(), dwarf_ranges_dealloc(), dwarf_srclines_dealloc(), dwarf_types_dealloc(), dwarf_vars_dealloc() and dwarf_weaks_dealloc() are provided for compatibility with other implementations of the DWARF(3) API. Due to the way memory is managed in the current implementation, these functions are effectively no-ops. Iconic compatibility behavior, honestly.

See dwarf(3) for more information about the memory management scheme in this implementation of the DWARF(3) API 🌸

🌟 RETURN VALUES 🌟

Functions dwarf_dealloc(), dwarf_fde_cie_list_dealloc(), dwarf_funcs_dealloc(), dwarf_globals_dealloc(), dwarf_pubtypes_dealloc(), dwarf_ranges_dealloc(), dwarf_srclines_dealloc(), dwarf_types_dealloc(), dwarf_vars_dealloc() and dwarf_weaks_dealloc() have no return value. None. Zero. Void energy 💀

🦋 SEE ALSO 🦋

• dwarf(3)
• dwarf_child(3)
• dwarf_expand_frame_instructions(3)
• dwarf_get_abbrev(3)
• dwarf_offdie(3)
• dwarf_siblingof(3)

---

mwah 💋 and that’s the footer tea: this page comes from Debian, dated July 23, 2011, and the manual page is DWARF_DEALLOC(3) 🎀✨