Daily bump.
[official-gcc.git] / libcc1 / context.hh
blob21a8262ad4be4b693520819b9620c46821abe2b0
1 /* Generic plugin context
2 Copyright (C) 2020 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
9 version.
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 for more details.
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
20 #ifndef CC1_PLUGIN_CONTEXT_HH
21 #define CC1_PLUGIN_CONTEXT_HH
23 #include "system.h"
24 #include "coretypes.h"
25 #include "tree.h"
27 #include "connection.hh"
29 namespace cc1_plugin
31 static inline unsigned long long
32 convert_out (tree t)
34 return (unsigned long long) (uintptr_t) t;
37 static inline tree
38 convert_in (unsigned long long v)
40 return (tree) (uintptr_t) v;
43 struct decl_addr_value
45 tree decl;
46 tree address;
49 struct decl_addr_hasher : free_ptr_hash<decl_addr_value>
51 static hashval_t hash (const decl_addr_value *e)
53 return DECL_UID (e->decl);
56 static bool equal (const decl_addr_value *p1,
57 const decl_addr_value *p2)
59 return p1->decl == p2->decl;
63 struct string_hasher : nofree_ptr_hash<const char>
65 static inline hashval_t hash (const char *s)
67 return htab_hash_string (s);
70 static inline bool equal (const char *p1, const char *p2)
72 return strcmp (p1, p2) == 0;
76 struct plugin_context : public cc1_plugin::connection
78 plugin_context (int fd)
79 : cc1_plugin::connection (fd),
80 address_map (30),
81 preserved (30),
82 file_names (30)
86 // Map decls to addresses.
87 hash_table<decl_addr_hasher> address_map;
89 // A collection of trees that are preserved for the GC.
90 hash_table< nofree_ptr_hash<tree_node> > preserved;
92 // File name cache.
93 hash_table<string_hasher> file_names;
95 // Perform GC marking.
96 void mark ();
98 // Preserve a tree during the plugin's operation.
99 tree preserve (tree t)
101 tree_node **slot = preserved.find_slot (t, INSERT);
102 *slot = t;
103 return t;
106 location_t get_location_t (const char *filename,
107 unsigned int line_number);
109 private:
111 // Add a file name to FILE_NAMES and return the canonical copy.
112 const char *intern_filename (const char *filename);
115 extern plugin_context *current_context;
117 void generic_plugin_init (struct plugin_name_args *plugin_info,
118 unsigned int version);
121 #endif // CC1_PLUGIN_CONTEXT_HH