LCOV - code coverage report
Current view: top level - ccache - exitfn.c (source / functions) Hit Total Coverage
Test: ccache.lcov.info Lines: 29 30 96.7 %
Date: 2015-06-29 Functions: 5 5 100.0 %
Branches: 3 4 75.0 %

           Branch data     Line data    Source code
       1                 :            : /*
       2                 :            :  * Copyright (C) 2010-2015 Joel Rosdahl
       3                 :            :  *
       4                 :            :  * This program is free software; you can redistribute it and/or modify it
       5                 :            :  * under the terms of the GNU General Public License as published by the Free
       6                 :            :  * Software Foundation; either version 3 of the License, or (at your option)
       7                 :            :  * any later version.
       8                 :            :  *
       9                 :            :  * This program is distributed in the hope that it will be useful, but WITHOUT
      10                 :            :  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
      11                 :            :  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
      12                 :            :  * more details.
      13                 :            :  *
      14                 :            :  * You should have received a copy of the GNU General Public License along with
      15                 :            :  * this program; if not, write to the Free Software Foundation, Inc., 51
      16                 :            :  * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      17                 :            :  */
      18                 :            : 
      19                 :            : #include "ccache.h"
      20                 :            : 
      21                 :            : struct exit_function {
      22                 :            :         void (*function)(void *);
      23                 :            :         void *context;
      24                 :            :         struct exit_function *next;
      25                 :            : };
      26                 :            : 
      27                 :            : struct nullary_exit_function {
      28                 :            :         void (*function)(void);
      29                 :            : };
      30                 :            : 
      31                 :            : static struct exit_function *exit_functions;
      32                 :            : 
      33                 :            : static void
      34                 :         14 : call_nullary_exit_function(void *context)
      35                 :            : {
      36                 :         14 :         struct nullary_exit_function *p = (struct nullary_exit_function*)context;
      37                 :         14 :         p->function();
      38                 :         14 :         free(p);
      39                 :         14 : }
      40                 :            : 
      41                 :            : /*
      42                 :            :  * Initialize exit functions. Must be called once before exitfn_add* are used.
      43                 :            :  */
      44                 :            : void
      45                 :          7 : exitfn_init(void)
      46                 :            : {
      47         [ -  + ]:          7 :         if (atexit(exitfn_call) != 0) {
      48                 :          0 :                 fatal("atexit failed: %s", strerror(errno));
      49                 :            :         }
      50                 :          7 : }
      51                 :            : 
      52                 :            : /*
      53                 :            :  * Add a nullary function to be called when ccache exits. Functions are called
      54                 :            :  * in reverse order.
      55                 :            :  */
      56                 :            : void
      57                 :         14 : exitfn_add_nullary(void (*function)(void))
      58                 :            : {
      59                 :         14 :         struct nullary_exit_function *p = x_malloc(sizeof(*p));
      60                 :         14 :         p->function = function;
      61                 :         14 :         exitfn_add(call_nullary_exit_function, p);
      62                 :         14 : }
      63                 :            : 
      64                 :            : /*
      65                 :            :  * Add a function to be called with a context parameter when ccache exits.
      66                 :            :  * Functions are called in reverse order.
      67                 :            :  */
      68                 :            : void
      69                 :         14 : exitfn_add(void (*function)(void *), void *context)
      70                 :            : {
      71                 :            :         struct exit_function *p;
      72                 :            : 
      73                 :         14 :         p = x_malloc(sizeof(*p));
      74                 :         14 :         p->function = function;
      75                 :         14 :         p->context = context;
      76                 :         14 :         p->next = exit_functions;
      77                 :         14 :         exit_functions = p;
      78                 :         14 : }
      79                 :            : 
      80                 :            : /*
      81                 :            :  * Call added functions.
      82                 :            :  */
      83                 :            : void
      84                 :          7 : exitfn_call(void)
      85                 :            : {
      86                 :          7 :         struct exit_function *p = exit_functions, *q;
      87                 :          7 :         exit_functions = NULL;
      88         [ +  + ]:         21 :         while (p) {
      89                 :         14 :                 p->function(p->context);
      90                 :         14 :                 q = p;
      91                 :         14 :                 p = p->next;
      92                 :         14 :                 free(q);
      93                 :            :         }
      94                 :          7 : }

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