X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fvendor%2Fmsgpack%2Funpack.h;fp=src%2Fvendor%2Fmsgpack%2Funpack.h;h=036d575ebadec896105aa15f00cd4ebc5faaa3a3;hp=0000000000000000000000000000000000000000;hb=116a02e33a6aba03128c268c333e1c35584848d2;hpb=267d66aaabfe8f520be83749fe75505ddf2d086f diff --git a/src/vendor/msgpack/unpack.h b/src/vendor/msgpack/unpack.h new file mode 100644 index 000000000..036d575eb --- /dev/null +++ b/src/vendor/msgpack/unpack.h @@ -0,0 +1,281 @@ +/* + * MessagePack for C unpacking routine + * + * Copyright (C) 2008-2009 FURUHASHI Sadayuki + * + * Distributed under the Boost Software License, Version 1.0. + * (See accompanying file LICENSE_1_0.txt or copy at + * http://www.boost.org/LICENSE_1_0.txt) + */ +#ifndef MSGPACK_UNPACKER_H +#define MSGPACK_UNPACKER_H + +#include "zone.h" +#include "object.h" +#include + +#ifdef __cplusplus +extern "C" { +#endif + + +/** + * @defgroup msgpack_unpack Deserializer + * @ingroup msgpack + * @{ + */ + +typedef struct msgpack_unpacked { + msgpack_zone* zone; + msgpack_object data; +} msgpack_unpacked; + +typedef enum { + MSGPACK_UNPACK_SUCCESS = 2, + MSGPACK_UNPACK_EXTRA_BYTES = 1, + MSGPACK_UNPACK_CONTINUE = 0, + MSGPACK_UNPACK_PARSE_ERROR = -1, + MSGPACK_UNPACK_NOMEM_ERROR = -2 +} msgpack_unpack_return; + + +MSGPACK_DLLEXPORT +msgpack_unpack_return +msgpack_unpack_next(msgpack_unpacked* result, + const char* data, size_t len, size_t* off); + +/** @} */ + + +/** + * @defgroup msgpack_unpacker Streaming deserializer + * @ingroup msgpack + * @{ + */ + +typedef struct msgpack_unpacker { + char* buffer; + size_t used; + size_t free; + size_t off; + size_t parsed; + msgpack_zone* z; + size_t initial_buffer_size; + void* ctx; +} msgpack_unpacker; + + +#ifndef MSGPACK_UNPACKER_INIT_BUFFER_SIZE +#define MSGPACK_UNPACKER_INIT_BUFFER_SIZE (64*1024) +#endif + +/** + * Initializes a streaming deserializer. + * The initialized deserializer must be destroyed by msgpack_unpacker_destroy(msgpack_unpacker*). + */ +MSGPACK_DLLEXPORT +bool msgpack_unpacker_init(msgpack_unpacker* mpac, size_t initial_buffer_size); + +/** + * Destroys a streaming deserializer initialized by msgpack_unpacker_init(msgpack_unpacker*, size_t). + */ +MSGPACK_DLLEXPORT +void msgpack_unpacker_destroy(msgpack_unpacker* mpac); + + +/** + * Creates a streaming deserializer. + * The created deserializer must be destroyed by msgpack_unpacker_free(msgpack_unpacker*). + */ +MSGPACK_DLLEXPORT +msgpack_unpacker* msgpack_unpacker_new(size_t initial_buffer_size); + +/** + * Frees a streaming deserializer created by msgpack_unpacker_new(size_t). + */ +MSGPACK_DLLEXPORT +void msgpack_unpacker_free(msgpack_unpacker* mpac); + + +#ifndef MSGPACK_UNPACKER_RESERVE_SIZE +#define MSGPACK_UNPACKER_RESERVE_SIZE (32*1024) +#endif + +/** + * Reserves free space of the internal buffer. + * Use this function to fill the internal buffer with + * msgpack_unpacker_buffer(msgpack_unpacker*), + * msgpack_unpacker_buffer_capacity(const msgpack_unpacker*) and + * msgpack_unpacker_buffer_consumed(msgpack_unpacker*). + */ +static inline bool msgpack_unpacker_reserve_buffer(msgpack_unpacker* mpac, size_t size); + +/** + * Gets pointer to the free space of the internal buffer. + * Use this function to fill the internal buffer with + * msgpack_unpacker_reserve_buffer(msgpack_unpacker*, size_t), + * msgpack_unpacker_buffer_capacity(const msgpack_unpacker*) and + * msgpack_unpacker_buffer_consumed(msgpack_unpacker*). + */ +static inline char* msgpack_unpacker_buffer(msgpack_unpacker* mpac); + +/** + * Gets size of the free space of the internal buffer. + * Use this function to fill the internal buffer with + * msgpack_unpacker_reserve_buffer(msgpack_unpacker*, size_t), + * msgpack_unpacker_buffer(const msgpack_unpacker*) and + * msgpack_unpacker_buffer_consumed(msgpack_unpacker*). + */ +static inline size_t msgpack_unpacker_buffer_capacity(const msgpack_unpacker* mpac); + +/** + * Notifies the deserializer that the internal buffer filled. + * Use this function to fill the internal buffer with + * msgpack_unpacker_reserve_buffer(msgpack_unpacker*, size_t), + * msgpack_unpacker_buffer(msgpack_unpacker*) and + * msgpack_unpacker_buffer_capacity(const msgpack_unpacker*). + */ +static inline void msgpack_unpacker_buffer_consumed(msgpack_unpacker* mpac, size_t size); + + +/** + * Deserializes one object. + * Returns true if it successes. Otherwise false is returned. + * @param pac pointer to an initialized msgpack_unpacked object. + */ +MSGPACK_DLLEXPORT +msgpack_unpack_return msgpack_unpacker_next(msgpack_unpacker* mpac, msgpack_unpacked* pac); + +/** + * Deserializes one object and set the number of parsed bytes involved. + * Returns true if it successes. Otherwise false is returned. + * @param mpac pointer to an initialized msgpack_unpacker object. + * @param result pointer to an initialized msgpack_unpacked object. + * @param p_bytes pointer to variable that will be set with the number of parsed bytes. + */ +MSGPACK_DLLEXPORT +msgpack_unpack_return msgpack_unpacker_next_with_size(msgpack_unpacker* mpac, + msgpack_unpacked* result, + size_t *p_bytes); + +/** + * Initializes a msgpack_unpacked object. + * The initialized object must be destroyed by msgpack_unpacked_destroy(msgpack_unpacker*). + * Use the object with msgpack_unpacker_next(msgpack_unpacker*, msgpack_unpacked*) or + * msgpack_unpack_next(msgpack_unpacked*, const char*, size_t, size_t*). + */ +static inline void msgpack_unpacked_init(msgpack_unpacked* result); + +/** + * Destroys a streaming deserializer initialized by msgpack_unpacked(). + */ +static inline void msgpack_unpacked_destroy(msgpack_unpacked* result); + +/** + * Releases the memory zone from msgpack_unpacked object. + * The released zone must be freed by msgpack_zone_free(msgpack_zone*). + */ +static inline msgpack_zone* msgpack_unpacked_release_zone(msgpack_unpacked* result); + + +MSGPACK_DLLEXPORT +int msgpack_unpacker_execute(msgpack_unpacker* mpac); + +MSGPACK_DLLEXPORT +msgpack_object msgpack_unpacker_data(msgpack_unpacker* mpac); + +MSGPACK_DLLEXPORT +msgpack_zone* msgpack_unpacker_release_zone(msgpack_unpacker* mpac); + +MSGPACK_DLLEXPORT +void msgpack_unpacker_reset_zone(msgpack_unpacker* mpac); + +MSGPACK_DLLEXPORT +void msgpack_unpacker_reset(msgpack_unpacker* mpac); + +static inline size_t msgpack_unpacker_message_size(const msgpack_unpacker* mpac); + + +/** @} */ + + +// obsolete +MSGPACK_DLLEXPORT +msgpack_unpack_return +msgpack_unpack(const char* data, size_t len, size_t* off, + msgpack_zone* result_zone, msgpack_object* result); + + + + +static inline size_t msgpack_unpacker_parsed_size(const msgpack_unpacker* mpac); + +MSGPACK_DLLEXPORT +bool msgpack_unpacker_flush_zone(msgpack_unpacker* mpac); + +MSGPACK_DLLEXPORT +bool msgpack_unpacker_expand_buffer(msgpack_unpacker* mpac, size_t size); + +static inline bool msgpack_unpacker_reserve_buffer(msgpack_unpacker* mpac, size_t size) +{ + if(mpac->free >= size) { return true; } + return msgpack_unpacker_expand_buffer(mpac, size); +} + +static inline char* msgpack_unpacker_buffer(msgpack_unpacker* mpac) +{ + return mpac->buffer + mpac->used; +} + +static inline size_t msgpack_unpacker_buffer_capacity(const msgpack_unpacker* mpac) +{ + return mpac->free; +} + +static inline void msgpack_unpacker_buffer_consumed(msgpack_unpacker* mpac, size_t size) +{ + mpac->used += size; + mpac->free -= size; +} + +static inline size_t msgpack_unpacker_message_size(const msgpack_unpacker* mpac) +{ + return mpac->parsed - mpac->off + mpac->used; +} + +static inline size_t msgpack_unpacker_parsed_size(const msgpack_unpacker* mpac) +{ + return mpac->parsed; +} + + +static inline void msgpack_unpacked_init(msgpack_unpacked* result) +{ + memset(result, 0, sizeof(msgpack_unpacked)); +} + +static inline void msgpack_unpacked_destroy(msgpack_unpacked* result) +{ + if(result->zone != NULL) { + msgpack_zone_free(result->zone); + result->zone = NULL; + memset(&result->data, 0, sizeof(msgpack_object)); + } +} + +static inline msgpack_zone* msgpack_unpacked_release_zone(msgpack_unpacked* result) +{ + if(result->zone != NULL) { + msgpack_zone* z = result->zone; + result->zone = NULL; + return z; + } + return NULL; +} + + +#ifdef __cplusplus +} +#endif + +#endif /* msgpack/unpack.h */