gcc/jit/jit-tempdir.h

   1 /* Managing temporary directories and their content within libgccjit.so
   2    Copyright (C) 2014-2018 Free Software Foundation, Inc.
   3    Contributed by David Malcolm <dmalcolm@redhat.com>.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it
   8 under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful, but
  13 WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 #ifndef JIT_TEMPDIR_H
  22 #define JIT_TEMPDIR_H
  23
  24 #include "jit-logging.h"
  25
  26 namespace gcc {
  27
  28 namespace jit {
  29
  30 /* A class to keep track of the jit::playback::context's tempdir.
  31
  32    The tempdir has the following layout:
  33
  34      /tmp/libgccjit-XXXXXX/
  35                          ./fake.c
  36                             (doesn't exist, but the rest of the
  37                              compiler needs a source code filename)
  38
  39                          ./fake.s
  40                               (created by toplev::main)
  41
  42                          ./fake.so
  43                               (created by playback::context::convert_to_dso).
  44
  45   It is normally deleted from the filesystem in the playback::context's
  46   dtor, unless GCC_JIT_BOOL_OPTION_KEEP_INTERMEDIATES was set.  */
  47
  48 class tempdir : public log_user
  49 {
  50  public:
  51   tempdir (logger *logger, int keep_intermediates);
  52   ~tempdir ();
  53
  54   bool create ();
  55
  56   const char * get_path () const { return m_path_tempdir; }
  57   const char * get_path_c_file () const { return m_path_c_file; }
  58   const char * get_path_s_file () const { return m_path_s_file; }
  59   const char * get_path_so_file () const { return m_path_so_file; }
  60
  61   /* Add PATH to the vec of tempfiles that must be unlinked.
  62      Take ownership of the buffer PATH; it will be freed.  */
  63   void add_temp_file (char *path) { m_tempfiles.safe_push (path); }
  64
  65  private:
  66   /* Was GCC_JIT_BOOL_OPTION_KEEP_INTERMEDIATES set?  If so, keep the
  67      on-disk tempdir around after this wrapper object goes away.  */
  68   int m_keep_intermediates;
  69
  70   /* Allocated using xmalloc (by xstrdup).  */
  71   char *m_path_template;
  72
  73   /* This either aliases m_path_template, or is NULL.  */
  74   char *m_path_tempdir;
  75
  76   /* The following are allocated using xmalloc.  */
  77   char *m_path_c_file;
  78   char *m_path_s_file;
  79   char *m_path_so_file;
  80
  81   /* Other files within the tempdir to be cleaned up:
  82      - certain ahead-of-time compilation artifacts (.o and .exe files)
  83      - dumpfiles that were requested via gcc_jit_context_enable_dump.  */
  84   auto_vec <char *> m_tempfiles;
  85 };
  86
  87 } // namespace gcc::jit
  88
  89 } // namespace gcc
  90
  91 #endif /* JIT_TEMPDIR_H */