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module: provide a "common" constructor and destructor

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Also, provide a lock for module to use (to ensure run() and content()
doesn't step on each other's toes).
This commit is contained in:
Daniel Eklöf 2018-12-18 20:12:04 +01:00
parent 3618b863ff
commit edc418b22d
2 changed files with 29 additions and 0 deletions
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23
module.c
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@ -1,6 +1,29 @@
#include "module.h"
#include <stdlib.h>
struct module *
module_common_new(void)
{
struct module *mod = malloc(sizeof(*mod));
mod->bar = NULL;
mtx_init(&mod->lock, mtx_plain);
mod->private = NULL;
mod->run = NULL;
mod->destroy = &module_default_destroy;
mod->content = NULL;
mod->begin_expose = &module_default_begin_expose;
mod->expose = &module_default_expose;
mod->end_expose = &module_default_end_expose;
return mod;
}
void
module_default_destroy(struct module *mod)
{
mtx_destroy(&mod->lock);
free(mod);
}
struct module_expose_context
module_default_begin_expose(const struct module *mod, cairo_t *cr)
{