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Diffstat (limited to 'extras/dispatch/src/iovec.c')
-rw-r--r-- | extras/dispatch/src/iovec.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/extras/dispatch/src/iovec.c b/extras/dispatch/src/iovec.c new file mode 100644 index 0000000000..6ff6874440 --- /dev/null +++ b/extras/dispatch/src/iovec.c @@ -0,0 +1,81 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +#include <qpid/dispatch/iovec.h> +#include <qpid/dispatch/alloc.h> +#include <string.h> + +#define DX_IOVEC_MAX 64 + +struct dx_iovec_t { + struct iovec iov_array[DX_IOVEC_MAX]; + struct iovec *iov; + int iov_count; +}; + + +ALLOC_DECLARE(dx_iovec_t); +ALLOC_DEFINE(dx_iovec_t); + + +dx_iovec_t *dx_iovec(int vector_count) +{ + dx_iovec_t *iov = new_dx_iovec_t(); + if (!iov) + return 0; + + memset(iov, 0, sizeof(dx_iovec_t)); + + iov->iov_count = vector_count; + if (vector_count > DX_IOVEC_MAX) + iov->iov = (struct iovec*) malloc(sizeof(struct iovec) * vector_count); + else + iov->iov = &iov->iov_array[0]; + + return iov; +} + + +void dx_iovec_free(dx_iovec_t *iov) +{ + if (!iov) + return; + + if (iov->iov && iov->iov != &iov->iov_array[0]) + free(iov->iov); + + free_dx_iovec_t(iov); +} + + +struct iovec *dx_iovec_array(dx_iovec_t *iov) +{ + if (!iov) + return 0; + return iov->iov; +} + + +int dx_iovec_count(dx_iovec_t *iov) +{ + if (!iov) + return 0; + return iov->iov_count; +} + |