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/*
*
* Copyright 2015-2016, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include "src/core/lib/iomgr/closure.h"
#include <grpc/support/alloc.h>
void grpc_closure_init(grpc_closure *closure, grpc_iomgr_cb_func cb,
void *cb_arg) {
closure->cb = cb;
closure->cb_arg = cb_arg;
closure->final_data = 0;
}
void grpc_closure_list_add(grpc_closure_list *closure_list,
grpc_closure *closure, bool success) {
if (closure == NULL) return;
closure->final_data = (success != 0);
if (closure_list->head == NULL) {
closure_list->head = closure;
} else {
closure_list->tail->final_data |= (uintptr_t)closure;
}
closure_list->tail = closure;
}
bool grpc_closure_list_empty(grpc_closure_list closure_list) {
return closure_list.head == NULL;
}
void grpc_closure_list_move(grpc_closure_list *src, grpc_closure_list *dst) {
if (src->head == NULL) {
return;
}
if (dst->head == NULL) {
*dst = *src;
} else {
dst->tail->final_data |= (uintptr_t)src->head;
dst->tail = src->tail;
}
src->head = src->tail = NULL;
}
typedef struct {
grpc_iomgr_cb_func cb;
void *cb_arg;
grpc_closure wrapper;
} wrapped_closure;
static void closure_wrapper(grpc_exec_ctx *exec_ctx, void *arg, bool success) {
wrapped_closure *wc = arg;
grpc_iomgr_cb_func cb = wc->cb;
void *cb_arg = wc->cb_arg;
gpr_free(wc);
cb(exec_ctx, cb_arg, success);
}
grpc_closure *grpc_closure_create(grpc_iomgr_cb_func cb, void *cb_arg) {
wrapped_closure *wc = gpr_malloc(sizeof(*wc));
wc->cb = cb;
wc->cb_arg = cb_arg;
grpc_closure_init(&wc->wrapper, closure_wrapper, wc);
return &wc->wrapper;
}
grpc_closure *grpc_closure_next(grpc_closure *closure) {
return (grpc_closure *)(closure->final_data & ~(uintptr_t)1);
}
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