Hello,
As my previous message said I think I understand the changes to do but
to be sure i would like to try with one example of my own. For this I
take the function eina_array_init() for the eina_array.c file.
the original code is this one (minus uninteresting details for the
discussion)
EAPI int eina_array_init(void)
{
if (!_eina_array_init_count)
{
if (!eina_error_init())
{
fprintf(stderr, "Could not initialize eina error module.\n");
return 0;
}
if (!eina_magic_string_init())
{
EINA_ERROR_PERR("ERROR: Could not initialize eina magic
string modu
le.\n");
eina_error_shutdown();
return 0;
}
/* */ do some stuff
}
return ;
}
the modified version is the following
EAPI int eina_array_init(void)
{
if (!_eina_array_init_count)
{
if (!eina_error_init())
{
fprintf(stderr, "Could not initialize eina error module.\n");
return 0;
}
if(!eina_log_init())
{
fprintf(stderr, "Could not initialize eina log module.\n");
return 0;
}
if (!eina_magic_string_init())
{
EINA_LOG_ERR(EINA_LOG_DOMAIN_GLOBAL, "ERROR: Could not
initialize eina magic string module.\n");
eina_log_shutdown();
eina_error_shutdown();
return 0;
}
/* */ do some stuff
}
return ;
}
Now what is the difference between EINA_LOG_ERR and EINA_LOG_DOM_ERR in
this case. Would it be wise to create an individual logging domain for
each module or can we stick to the central logging domain defined in
eina_log_init() function. Now in the following example, i can not delete
the eina_error_init() function because some of the functions in the
eina_array.c file use the eina_error_set function.
best
Mathieu
> On the beginning of a module, program or library, you must call
> eina_log_init() for initializing the library. After that, you should
> call eina_log_domain_register(domain_name, color) for registering a
> new domain, note that this call returns an index associated with the
> created domain. When your program is shutting down, it must unregister
> registered domains and call eina_log_shutdown().
>
> Almost all files under
> http://trac.enlightenment.org/e/browser/trunk/PROTO/eupnp/src/lib have
> this pattern (init, register/save, shutdown). Also, note on
> eupnp_log.c that I defined a global logging domain for the project.
> There's a native global domain to which macros without DOM apply, but
> if you want things customized like I do, you should do that way.
>
> A basic migration approach follows:
>
> 1. Find EINA_ERROR_P* macros and change them to the new ones:
> EINA_LOG_DOM_* (grep :-))
> 2. Check if eina_error_set(), eina_error_msg_register() are being
> used. If they aren't, you can remove eina_error_init() and
> eina_error_shutdown(). Note that I found some libs using EINA_ERROR_
> macros and not calling eina_error_init().
>
>
> Hope this and code examples are enough. Any doubts please post on the ML.
>
> Thanks,
>
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