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, ...) do { \
  99         struct psi_dump _dump_tmp, *_dump_ptr = dump; \
 100         if (!_dump_ptr) { \
 101                 _dump_ptr = &_dump_tmp; \
 102                 _dump_tmp.ctx.fd = STDOUT_FILENO; \
 103                 _dump_tmp.fun = (psi_dump_cb) dprintf; \
 104         } \
 105         _dump_ptr->fun(_dump_ptr->ctx, __VA_ARGS__); \
 106 } while(0)
 107
 108 #define PSI_DATA(D) ((struct psi_data *) (D))
 109
 110 #define PSI_DATA_MEMBERS \
 111         struct psi_decl_file file; \
 112         struct psi_plist *consts; \
 113         struct psi_plist *types; \
 114         struct psi_plist *structs; \
 115         struct psi_plist *unions; \
 116         struct psi_plist *enums; \
 117         struct psi_plist *decls; \
 118         struct psi_plist *vars; \
 119         struct psi_plist *impls; \
 120         psi_error_cb error; \
 121         char last_error[0x1000]; \
 122         unsigned errors; \
 123         unsigned flags; \
 124         int debug_fd
 125
 126 struct psi_data {
 127         PSI_DATA_MEMBERS;
 128 };
 129
 130 struct psi_data *psi_data_ctor(struct psi_data *data, psi_error_cb error, unsigned flags);
 131 struct psi_data *psi_data_ctor_with_dtors(struct psi_data *data, psi_error_cb error, unsigned flags);
 132 struct psi_data *psi_data_exchange(struct psi_data *dest, struct psi_data *src);
 133 void psi_data_dtor(struct psi_data *data);
 134 void psi_data_dump(struct psi_dump *dump, struct psi_data *data);
 135
 136 #endif