LCOV - code coverage report
Current view: top level - libdw - dwarf_end.c (source / functions) Coverage Total Hit
Test: elfutils-0.193 Lines: 100.0 % 70 70
Test Date: 2025-08-30 14:31:09 Functions: 100.0 % 4 4
Legend: Lines:     hit not hit
Branches: + taken - not taken # not executed
Branches: 100.0 % 40 40

             Branch data     Line data    Source code
       1                 :             : /* Release debugging handling context.
       2                 :             :    Copyright (C) 2002-2011, 2014, 2018 Red Hat, Inc.
       3                 :             :    This file is part of elfutils.
       4                 :             :    Written by Ulrich Drepper <drepper@redhat.com>, 2002.
       5                 :             : 
       6                 :             :    This file is free software; you can redistribute it and/or modify
       7                 :             :    it under the terms of either
       8                 :             : 
       9                 :             :      * the GNU Lesser General Public License as published by the Free
      10                 :             :        Software Foundation; either version 3 of the License, or (at
      11                 :             :        your option) any later version
      12                 :             : 
      13                 :             :    or
      14                 :             : 
      15                 :             :      * the GNU General Public License as published by the Free
      16                 :             :        Software Foundation; either version 2 of the License, or (at
      17                 :             :        your option) any later version
      18                 :             : 
      19                 :             :    or both in parallel, as here.
      20                 :             : 
      21                 :             :    elfutils is distributed in the hope that it will be useful, but
      22                 :             :    WITHOUT ANY WARRANTY; without even the implied warranty of
      23                 :             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      24                 :             :    General Public License for more details.
      25                 :             : 
      26                 :             :    You should have received copies of the GNU General Public License and
      27                 :             :    the GNU Lesser General Public License along with this program.  If
      28                 :             :    not, see <http://www.gnu.org/licenses/>.  */
      29                 :             : 
      30                 :             : #ifdef HAVE_CONFIG_H
      31                 :             : # include <config.h>
      32                 :             : #endif
      33                 :             : 
      34                 :             : #include <search.h>
      35                 :             : #include <stdlib.h>
      36                 :             : #include <assert.h>
      37                 :             : #include <string.h>
      38                 :             : 
      39                 :             : #include "libdwP.h"
      40                 :             : #include "cfi.h"
      41                 :             : 
      42                 :             : 
      43                 :             : static void
      44                 :       24156 : dwarf_package_index_free (Dwarf_Package_Index *index)
      45                 :             : {
      46         [ +  + ]:       24156 :   if (index != NULL)
      47                 :             :     {
      48                 :          52 :       free (index->debug_info_offsets);
      49                 :          52 :       free (index);
      50                 :             :     }
      51                 :       24156 : }
      52                 :             : 
      53                 :             : 
      54                 :             : static void
      55                 :     1226956 : noop_free (void *arg __attribute__ ((unused)))
      56                 :             : {
      57                 :     1226956 : }
      58                 :             : 
      59                 :             : 
      60                 :             : static void
      61                 :       95106 : cu_free (void *arg)
      62                 :             : {
      63                 :       95106 :   struct Dwarf_CU *p = (struct Dwarf_CU *) arg;
      64                 :             : 
      65                 :       95106 :   eu_search_tree_fini (&p->locs_tree, noop_free);
      66                 :       95106 :   rwlock_fini (p->abbrev_lock);
      67                 :       95106 :   rwlock_fini (p->split_lock);
      68                 :       95106 :   mutex_fini (p->src_lock);
      69                 :       95106 :   mutex_fini (p->str_off_base_lock);
      70                 :       95106 :   mutex_fini (p->intern_lock);
      71                 :             : 
      72                 :             :   /* Only free the CU internals if its not a fake CU.  */
      73   [ +  +  +  + ]:       95106 :   if (p != p->dbg->fake_loc_cu && p != p->dbg->fake_loclists_cu
      74         [ +  + ]:       84330 :      && p != p->dbg->fake_addr_cu)
      75                 :             :     {
      76                 :       84198 :       Dwarf_Abbrev_Hash_free (&p->abbrev_hash);
      77                 :             : 
      78                 :             :       /* Free split dwarf one way (from skeleton to split).  */
      79         [ +  + ]:       84198 :       if (p->unit_type == DW_UT_skeleton
      80   [ +  +  +  + ]:         244 :           && p->split != NULL && p->split != (void *)-1)
      81                 :             :         {
      82                 :             :           /* The fake_addr_cu might be shared, only release one.  */
      83         [ +  + ]:         170 :           if (p->dbg->fake_addr_cu == p->split->dbg->fake_addr_cu)
      84                 :         126 :             p->split->dbg->fake_addr_cu = NULL;
      85                 :             :           /* There is only one DWP file. We free it later.  */
      86         [ +  + ]:         170 :           if (p->split->dbg != p->dbg->dwp_dwarf)
      87                 :         104 :             INTUSE(dwarf_end) (p->split->dbg);
      88                 :             :         }
      89                 :             :     }
      90                 :       95106 : }
      91                 :             : 
      92                 :             : 
      93                 :             : int
      94                 :       12098 : dwarf_end (Dwarf *dwarf)
      95                 :             : {
      96         [ +  + ]:       12098 :   if (dwarf != NULL)
      97                 :             :     {
      98                 :       12078 :       dwarf_package_index_free (dwarf->tu_index);
      99                 :       12078 :       dwarf_package_index_free (dwarf->cu_index);
     100                 :             : 
     101         [ +  + ]:       12078 :       if (dwarf->cfi != NULL)
     102                 :             :         /* Clean up the CFI cache.  */
     103                 :          36 :         __libdw_destroy_frame_cache (dwarf->cfi);
     104                 :             : 
     105                 :       12078 :       Dwarf_Sig8_Hash_free (&dwarf->sig8_hash);
     106                 :             : 
     107                 :             :       /* The search tree for the CUs.  NB: the CU data itself is
     108                 :             :          allocated separately, but the abbreviation hash tables need
     109                 :             :          to be handled.  */
     110                 :       12078 :       eu_search_tree_fini (&dwarf->cu_tree, cu_free);
     111                 :       12078 :       eu_search_tree_fini (&dwarf->tu_tree, cu_free);
     112                 :             : 
     113                 :             :       /* Search tree for macro opcode tables.  */
     114                 :       12078 :       eu_search_tree_fini (&dwarf->macro_ops_tree, noop_free);
     115                 :             : 
     116                 :             :       /* Search tree for decoded .debug_lines units.  */
     117                 :       12078 :       eu_search_tree_fini (&dwarf->files_lines_tree, noop_free);
     118                 :             : 
     119                 :             :       /* And the split Dwarf.  */
     120                 :       12078 :       eu_search_tree_fini (&dwarf->split_tree, noop_free);
     121                 :             : 
     122                 :             :       /* Free the internally allocated memory.  */
     123         [ +  + ]:       14262 :       for (size_t i = 0; i < dwarf->mem_stacks; i++)
     124                 :             :         {
     125                 :        2184 :           struct libdw_memblock *memp = dwarf->mem_tails[i];
     126         [ +  + ]:       60604 :           while (memp != NULL)
     127                 :             :             {
     128                 :       58420 :               struct libdw_memblock *prevp = memp->prev;
     129                 :       58420 :               free (memp);
     130                 :       58420 :               memp = prevp;
     131                 :             :             }
     132                 :             :         }
     133         [ +  + ]:       12078 :       if (dwarf->mem_tails != NULL)
     134                 :        1780 :         free (dwarf->mem_tails);
     135                 :       12078 :       pthread_rwlock_destroy (&dwarf->mem_rwl);
     136                 :       12078 :       mutex_fini (dwarf->dwarf_lock);
     137                 :       12078 :       mutex_fini (dwarf->macro_lock);
     138                 :             : 
     139                 :             :       /* Free the pubnames helper structure.  */
     140                 :       12078 :       free (dwarf->pubnames_sets);
     141                 :             : 
     142                 :             :       /* Free the ELF descriptor if necessary.  */
     143         [ +  + ]:       12078 :       if (dwarf->free_elf)
     144                 :         682 :         elf_end (dwarf->elf);
     145                 :             : 
     146                 :             :       /* Free the fake location list CU.  */
     147         [ +  + ]:       12078 :       if (dwarf->fake_loc_cu != NULL)
     148                 :             :         {
     149                 :         326 :           cu_free (dwarf->fake_loc_cu);
     150                 :         326 :           free (dwarf->fake_loc_cu);
     151                 :             :         }
     152         [ +  + ]:       12078 :       if (dwarf->fake_loclists_cu != NULL)
     153                 :             :         {
     154                 :       10450 :           cu_free (dwarf->fake_loclists_cu);
     155                 :       10450 :           free (dwarf->fake_loclists_cu);
     156                 :             :         }
     157         [ +  + ]:       12078 :       if (dwarf->fake_addr_cu != NULL)
     158                 :             :         {
     159                 :         132 :           cu_free (dwarf->fake_addr_cu);
     160                 :         132 :           free (dwarf->fake_addr_cu);
     161                 :             :         }
     162                 :             : 
     163                 :             :       /* Did we find and allocate the alt Dwarf ourselves?  */
     164         [ +  + ]:       12078 :       if (dwarf->alt_fd != -1)
     165                 :             :         {
     166                 :           4 :           INTUSE(dwarf_end) (dwarf->alt_dwarf);
     167                 :           4 :           close (dwarf->alt_fd);
     168                 :             :         }
     169                 :             : 
     170         [ +  + ]:       12078 :       if (dwarf->dwp_fd != -1)
     171                 :             :         {
     172                 :          22 :           INTUSE(dwarf_end) (dwarf->dwp_dwarf);
     173                 :          22 :           close (dwarf->dwp_fd);
     174                 :             :         }
     175                 :             : 
     176                 :             :       /* The cached path and dir we found the Dwarf ELF file in.  */
     177                 :       12078 :       free (dwarf->elfpath);
     178                 :       12078 :       free (dwarf->debugdir);
     179                 :             : 
     180                 :             :       /* Free the context descriptor.  */
     181                 :       12078 :       free (dwarf);
     182                 :             :     }
     183                 :             : 
     184                 :       12098 :   return 0;
     185                 :             : }
     186                 :             : INTDEF(dwarf_end)
        

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