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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 07:32:08 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 07:32:08 +0000 |
commit | 328ad0a41c6bdf596224ff2e9ab9c0fabde8634d (patch) | |
tree | 973585a56cea8664b4be63b5bb737b443e4e2b76 /lib/nghttp3_idtr.h | |
parent | Initial commit. (diff) | |
download | nghttp3-7ff35c8c13712ed95e98143c5a9dfc5edfa306a4.tar.xz nghttp3-7ff35c8c13712ed95e98143c5a9dfc5edfa306a4.zip |
Adding upstream version 0.8.0.upstream/0.8.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | lib/nghttp3_idtr.h | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/lib/nghttp3_idtr.h b/lib/nghttp3_idtr.h new file mode 100644 index 0000000..ea3346c --- /dev/null +++ b/lib/nghttp3_idtr.h @@ -0,0 +1,90 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_IDTR_H +#define NGHTTP3_IDTR_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* HAVE_CONFIG_H */ + +#include <nghttp3/nghttp3.h> + +#include "nghttp3_mem.h" +#include "nghttp3_gaptr.h" + +/* + * nghttp3_idtr tracks the usage of stream ID. + */ +typedef struct nghttp3_idtr { + /* gap maintains the range of ID which is not used yet. Initially, + its range is [0, UINT64_MAX). */ + nghttp3_gaptr gap; + /* server is nonzero if this object records server initiated stream + ID. */ + int server; +} nghttp3_idtr; + +/* + * nghttp3_idtr_init initializes |idtr|. + * + * If this object records server initiated ID (even number), set + * |server| to nonzero. + */ +void nghttp3_idtr_init(nghttp3_idtr *idtr, int server, const nghttp3_mem *mem); + +/* + * nghttp3_idtr_free frees resources allocated for |idtr|. + */ +void nghttp3_idtr_free(nghttp3_idtr *idtr); + +/* + * nghttp3_idtr_open claims that |stream_id| is in used. + * + * It returns 0 if it succeeds, or one of the following negative error + * codes: + * + * NGHTTP3_ERR_STREAM_IN_USE + * ID has already been used. + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +int nghttp3_idtr_open(nghttp3_idtr *idtr, int64_t stream_id); + +/* + * nghttp3_idtr_open tells whether ID |stream_id| is in used or not. + * + * It returns nonzero if |stream_id| is used. + */ +int nghttp3_idtr_is_open(nghttp3_idtr *idtr, int64_t stream_id); + +/* + * nghttp3_idtr_first_gap returns the first id of first gap. If there + * is no gap, it returns UINT64_MAX. The returned id is an id space + * used in this object internally, and not stream ID. + */ +uint64_t nghttp3_idtr_first_gap(nghttp3_idtr *idtr); + +#endif /* NGHTTP3_IDTR_H */ |