git.m6w6.name Git - m6w6/ext-psi/blob - src/data.h

   1 /*******************************************************************************
   2  Copyright (c) 2016, Michael Wallner <mike@php.net>.
   3  All rights reserved.
   4
   5  Redistribution and use in source and binary forms, with or without
   6  modification, are permitted provided that the following conditions are met:
   7
   8      * Redistributions of source code must retain the above copyright notice,
   9        this list of conditions and the following disclaimer.
  10      * Redistributions in binary form must reproduce the above copyright
  11        notice, this list of conditions and the following disclaimer in the
  12        documentation and/or other materials provided with the distribution.
  13
  14  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  15  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  17  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
  18  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  20  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  21  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  22  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24 *******************************************************************************/
  25
  26 #ifndef PSI_DATA_H
  27 #define PSI_DATA_H
  28
  29 #include "types.h"
  30 #include "error.h"
  31 #include "plist.h"
  32 #include "validate.h"
  33
  34 #include <stdarg.h>
  35 #include <dlfcn.h>
  36
  37 #define PSI_DEBUG 0x1
  38 #define PSI_SILENT 0x2
  39
  40 #ifndef RTLD_NEXT
  41 # define RTLD_NEXT ((void *) -1l)
  42 #endif
  43 #ifndef RTLD_DEFAULT
  44 # define RTLD_DEFAULT ((void *) 0)
  45 #endif
  46
  47 static inline void *psi_dlsym(struct psi_plist *dllist, const char *name, const char *redir)
  48 {
  49         void *dl, *sym = NULL;
  50         const char *test = redir ?: name;
  51
  52 again:
  53         if (dllist) {
  54                 size_t i = 0;
  55
  56                 while (!sym && psi_plist_get(dllist, i++, &dl)) {
  57                         sym = dlsym(dl, test);
  58                 }
  59         }
  60         if (!sym) {
  61                 sym = dlsym(RTLD_DEFAULT, test);
  62         }
  63         if (!sym && test == redir) {
  64                 test = name;
  65                 goto again;
  66         }
  67
  68         return sym;
  69 }
  70
  71 #define PSI_DEBUG_PRINT(ctx, ...) do { \
  72         if ((ctx) && (PSI_DATA(ctx)->flags & PSI_DEBUG)) { \
  73                 dprintf(PSI_DATA(ctx)->debug_fd, __VA_ARGS__); \
  74         } \
  75 } while(0)
  76 #define PSI_DEBUG_PRINTV(ctx, msg, argv) do { \
  77         if ((ctx) && (PSI_DATA(ctx)->flags & PSI_DEBUG)) { \
  78                 vdprintf(PSI_DATA(ctx)->debug_fd, msg, argv); \
  79         } \
  80 } while(0)
  81 #define PSI_DEBUG_DUMP(ctx, dump_func, ...) do { \
  82         if ((ctx) && (PSI_DATA(ctx)->flags & PSI_DEBUG)) { \
  83                 struct psi_dump dump_ = {{ .fd = PSI_DATA(ctx)->debug_fd}, \
  84                                 .fun = (psi_dump_cb) dprintf}; \
  85                 dump_func(&dump_, __VA_ARGS__); \
  86         } \
  87 } while (0)
  88
  89 union psi_dump_arg {
  90         void *hn;
  91         int fd;
  92 };
  93 typedef void (*psi_dump_cb)(union psi_dump_arg, const char *msg, ...);
  94 struct psi_dump {
  95         union psi_dump_arg ctx;
  96         psi_dump_cb fun;
  97 };
  98 #define PSI_DUMP(dump, ...) (dump)->fun((dump)->ctx, __VA_ARGS__)
  99
 100 #define PSI_DATA(D) ((struct psi_data *) (D))
 101
 102 #define PSI_DATA_MEMBERS \
 103         struct psi_decl_file file; \
 104         struct psi_plist *consts; \
 105         struct psi_plist *types; \
 106         struct psi_plist *structs; \
 107         struct psi_plist *unions; \
 108         struct psi_plist *enums; \
 109         struct psi_plist *decls; \
 110         struct psi_plist *vars; \
 111         struct psi_plist *impls; \
 112         psi_error_cb error; \
 113         char last_error[0x1000]; \
 114         unsigned errors; \
 115         unsigned flags; \
 116         int debug_fd
 117
 118 struct psi_data {
 119         PSI_DATA_MEMBERS;
 120 };
 121
 122 struct psi_data *psi_data_ctor(struct psi_data *data, psi_error_cb error, unsigned flags);
 123 struct psi_data *psi_data_ctor_with_dtors(struct psi_data *data, psi_error_cb error, unsigned flags);
 124 struct psi_data *psi_data_exchange(struct psi_data *dest, struct psi_data *src);
 125 void psi_data_dtor(struct psi_data *data);
 126 void psi_data_dump(struct psi_dump *dump, struct psi_data *data);
 127
 128 #endif