71 lines
1.4 KiB
C++
71 lines
1.4 KiB
C++
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#include "future.h"
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struct promise
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{
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struct future f;
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void * ctx;
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promise_ctx_destroy_cb* cb_ctx_destroy;
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};
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struct future
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{
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void * user;
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future_success_cb * cb_success;
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future_failed_cb * cb_failed;
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};
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inline struct future* promise_to_future(struct promise* p)
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{
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return p->f;
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}
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inline struct promise* future_to_promise(struct future* f)
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{
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return (struct promise*)f;
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}
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struct future* future_create(future_success_cb * cb_success, future_failed_cb * cb_failed, void * user)
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{
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struct promise* p=ALLOC(struct promise, 1);
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p->f.user=user;
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p->f.cb_success=cb_success;
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p->f.cb_failed=cb_failed;
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return p->f;
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}
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void future_destroy(struct future * f)
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{
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struct promise* promise=future_to_promise(f);
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if(promise->cb_ctx_destroy!=NULL)
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{
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promise->cb_ctx_destroy(promise);
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}
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memset(promise,0,sizeof(struct promise));
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free(promise);
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return;
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}
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void promise_failed(struct promise* p, enum e_future_error error, const char* what)
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{
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p->f.cb_failed(error, what,p->f.user);
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return;
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}
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void promise_success(struct promise* p, void *result)
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{
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p->f.cb_success(result, p->f.user);
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return;
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}
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void promise_set_ctx(struct promise* p,void* ctx, promise_ctx_destroy_cb* cb)
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{
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p->ctx=ctx;
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p->cb_ctx_destroy=cb;
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return;
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}
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void* promise_get_ctx(struct promise* p)
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{
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return p->ctx;
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}
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void* promise_dettach_ctx(struct promise* p)
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{
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void* ctx=p->ctx;
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p->ctx=NULL;
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p->cb_ctx_destroy=NULL;
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return ctx;
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}
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