Commit Graph

7 Commits

Author SHA1 Message Date
Felipe Magno de Almeida ccc1849263 eina: Rename EAPI macro to EINA_API in Eina library
Summary:
Patch from a series of patches to rename EAPI symbols to specific
library DSOs.

EAPI was designed to be able to pass
`__attribute__ ((visibility ("default")))` for symbols with
GCC, which would mean that even if -fvisibility=hidden was used
when compiling the library, the needed symbols would get exported.

MSVC __almost__ works like GCC (or mingw) in which you can
declare everything as export and it will just work (slower, but
it will work). But there's a caveat: global variables will not
work the same way for MSVC, but works for mingw and GCC.

For global variables (as opposed to functions), MSVC requires
correct DSO visibility for MSVC: instead of declaring a symbol as
export for everything, you need to declare it as import when
importing from another DSO and export when defining it locally.

With current EAPI definitions, we get the following example
working in mingw and MSVC (observe it doesn't define any global
variables as exported symbols).

Example 1:
dll1:
```
EAPI void foo(void);

EAPI void bar()
{
  foo();
}
```
dll2:
```
EAPI void foo()
{
  printf ("foo\n");
}
```

This works fine with API defined as __declspec(dllexport) in both
cases and for gcc defining as
`__atttribute__((visibility("default")))`

However, the following:
Example 2:

dll1:

```
EAPI extern int foo;
EAPI void foobar(void);

EAPI void bar()
{
  foo = 5;
  foobar();
}
```

dll2:

```
EAPI int foo = 0;
EAPI void foobar()
{
  printf ("foo %d\n", foo);
}
```

This will work on mingw but will not work for MSVC. And that's why
EAPI is the only solution that worked for MSVC.

Co-authored-by: João Paulo Taylor Ienczak Zanette <jpaulotiz@gmail.com>
Co-authored-by: Ricardo Campos <ricardo.campos@expertise.dev>
Co-authored-by: Lucas Cavalcante de Sousa <lucks.sousa@gmail.com>

Reviewers: jptiz, lucas, woohyun, vtorri, raster

Reviewed By: jptiz, lucas, vtorri

Subscribers: ProhtMeyhet, cedric, #reviewers, #committers

Tags: #efl

Differential Revision: https://phab.enlightenment.org/D12188
2020-11-25 09:42:47 -03:00
Mike Blumenkrantz ef3a09499f build: fix void* use in pointer maths
Summary:
void* is an invalid type for calculating pointer offsets, so ensure that
this is always cast to something else (e.g., char*) in the few cases
where it's been misused

Subscribers: cedric, #reviewers, #committers

Tags: #efl

Differential Revision: https://phab.enlightenment.org/D11816
2020-05-12 16:55:59 +02:00
Marcel Hollerbach 9ccc66b900 eina_accessor: make carray accessor work properly
a accessor is not really helpfull if it operates like the carray
accessor before this commit. What it was doing is to fill the content of
the "current line" into the data pointer. In a carray the
"current line" is the content of its carray-member.

However, accessors like for inarray array list or inlist do work
completly differently. They are returning the pointer to the "current
line" not the value of the current line.

The only case where this worked is efl_ui_format.c which was only tested
with this accessor, and this accessor also only worked with this
accessor.

Reviewed-by: Cedric BAIL <cedric.bail@free.fr>
Differential Revision: https://phab.enlightenment.org/D10908
2019-12-18 21:45:42 +01:00
Marcel Hollerbach 223a433be8 eina: add accessors for c arrays
This adds a new API which can be used to get access to a carray via the eina_accessor API.
2019-07-03 07:41:05 +02:00
Felipe Magno de Almeida d63507446f eina: add eina_accessor_clone and update all Eina_Accessor to take advantage of it.
@feature.

Signed-off-by: Cedric Bail <cedric.bail@free.fr>
2014-02-25 18:04:47 -03:00
Sebastian Dransfeld 336f6ec328 efl: formatting 2013-06-20 13:28:18 +02:00
Vincent Torri 785f2a6b3a merge : add eina
currently, examples, tests and benchmark are not set. That's the next things i'll do


SVN revision: 76710
2012-09-16 10:57:48 +00:00