diff options
Diffstat (limited to 'libxcb/src/c_client.py')
| -rw-r--r-- | libxcb/src/c_client.py | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/libxcb/src/c_client.py b/libxcb/src/c_client.py index 077f0854c..321344190 100644 --- a/libxcb/src/c_client.py +++ b/libxcb/src/c_client.py @@ -171,10 +171,14 @@ def c_open(self): _c('#include <stdlib.h>')
_c('#include <string.h>')
_c('#include <assert.h>')
+ _c('#include <stddef.h> /* for offsetof() */')
_c('#include "xcbext.h"')
_c('#include "%s.h"', _ns.header)
_c('#include <X11/Xtrans/Xtrans.h>')
+ _c('')
+ _c('#define ALIGNOF(type) offsetof(struct { char dummy; type member; }, member)')
+
if _ns.is_ext:
for (n, h) in self.imports:
_hc('#include "%s.h"', h)
@@ -638,7 +642,7 @@ def get_serialize_params(context, self, buffer_var='_buffer', aux_var='_aux'): def _c_serialize_helper_insert_padding(context, code_lines, space, postpone):
code_lines.append('%s /* insert padding */' % space)
- code_lines.append('%s xcb_pad = -xcb_block_len & 3;' % space)
+ code_lines.append('%s xcb_pad = -xcb_block_len & (xcb_align_to - 1);' % space)
# code_lines.append('%s printf("automatically inserting padding: %%%%d\\n", xcb_pad);' % space)
code_lines.append('%s xcb_buffer_len += xcb_block_len + xcb_pad;' % space)
@@ -994,6 +998,8 @@ def _c_serialize_helper_fields(context, self, code_lines.append('%s xcb_parts_idx++;' % space)
count += 1
+ code_lines.append('%s xcb_align_to = ALIGNOF(%s);' % (space, 'char' if field.c_field_type == 'void' else field.c_field_type))
+
need_padding = True
if self.var_followed_by_fixed_fields:
need_padding = False
@@ -1101,9 +1107,11 @@ def _c_serialize(context, self): _c(' %s *xcb_out = *_buffer;', self.c_type)
_c(' unsigned int xcb_out_pad = -sizeof(%s) & 3;', self.c_type)
_c(' unsigned int xcb_buffer_len = sizeof(%s) + xcb_out_pad;', self.c_type)
+ _c(' unsigned int xcb_align_to;')
else:
_c(' char *xcb_out = *_buffer;')
_c(' unsigned int xcb_buffer_len = 0;')
+ _c(' unsigned int xcb_align_to;')
prefix = [('_aux', '->', self)]
aux_ptr = 'xcb_out'
@@ -1126,6 +1134,7 @@ def _c_serialize(context, self): _c(' unsigned int xcb_buffer_len = 0;')
_c(' unsigned int xcb_block_len = 0;')
_c(' unsigned int xcb_pad = 0;')
+ _c(' unsigned int xcb_align_to;')
elif 'sizeof' == context:
param_names = [p[2] for p in params]
@@ -1170,6 +1179,7 @@ def _c_serialize(context, self): _c(' unsigned int xcb_buffer_len = 0;')
_c(' unsigned int xcb_block_len = 0;')
_c(' unsigned int xcb_pad = 0;')
+ _c(' unsigned int xcb_align_to;')
_c('')
for t in temp_vars:
|