diff options
Diffstat (limited to 'src/core/transport/chttp2/hpack_table.h')
-rw-r--r-- | src/core/transport/chttp2/hpack_table.h | 32 |
1 files changed, 22 insertions, 10 deletions
diff --git a/src/core/transport/chttp2/hpack_table.h b/src/core/transport/chttp2/hpack_table.h index d2587e0758..a173eec30c 100644 --- a/src/core/transport/chttp2/hpack_table.h +++ b/src/core/transport/chttp2/hpack_table.h @@ -49,46 +49,58 @@ #define GRPC_CHTTP2_MAX_HPACK_TABLE_SIZE GRPC_CHTTP2_INITIAL_HPACK_TABLE_SIZE /* Per entry overhead bytes as per the spec */ #define GRPC_CHTTP2_HPACK_ENTRY_OVERHEAD 32 +#if 0 /* Maximum number of entries we could possibly fit in the table, given defined overheads */ #define GRPC_CHTTP2_MAX_TABLE_COUNT \ ((GRPC_CHTTP2_MAX_HPACK_TABLE_SIZE + GRPC_CHTTP2_HPACK_ENTRY_OVERHEAD - 1) / \ GRPC_CHTTP2_HPACK_ENTRY_OVERHEAD) +#endif /* hpack decoder table */ typedef struct { /* the first used entry in ents */ - gpr_uint16 first_ent; - /* the last used entry in ents */ - gpr_uint16 last_ent; + gpr_uint32 first_ent; /* how many entries are in the table */ - gpr_uint16 num_ents; + gpr_uint32 num_ents; /* the amount of memory used by the table, according to the hpack algorithm */ - gpr_uint16 mem_used; + gpr_uint32 mem_used; /* the max memory allowed to be used by the table, according to the hpack algorithm */ - gpr_uint16 max_bytes; + gpr_uint32 max_bytes; + /* the currently agreed size of the table, according to the hpack algorithm */ + gpr_uint32 current_table_bytes; + /* Maximum number of entries we could possibly fit in the table, given defined + overheads */ + gpr_uint32 max_entries; + /* Number of entries allocated in ents */ + gpr_uint32 cap_entries; /* a circular buffer of headers - this is stored in the opposite order to what hpack specifies, in order to simplify table management a little... meaning lookups need to SUBTRACT from the end position */ - grpc_mdelem *ents[GRPC_CHTTP2_MAX_TABLE_COUNT]; + grpc_mdelem **ents; grpc_mdelem *static_ents[GRPC_CHTTP2_LAST_STATIC_ENTRY]; } grpc_chttp2_hptbl; /* initialize a hpack table */ void grpc_chttp2_hptbl_init(grpc_chttp2_hptbl *tbl); void grpc_chttp2_hptbl_destroy(grpc_chttp2_hptbl *tbl); +void grpc_chttp2_hptbl_set_max_bytes(grpc_chttp2_hptbl *tbl, + gpr_uint32 max_bytes); +int grpc_chttp2_hptbl_set_current_table_size(grpc_chttp2_hptbl *tbl, + gpr_uint32 bytes); /* lookup a table entry based on its hpack index */ grpc_mdelem *grpc_chttp2_hptbl_lookup(const grpc_chttp2_hptbl *tbl, gpr_uint32 index); /* add a table entry to the index */ -void grpc_chttp2_hptbl_add(grpc_chttp2_hptbl *tbl, grpc_mdelem *md); +int grpc_chttp2_hptbl_add(grpc_chttp2_hptbl *tbl, + grpc_mdelem *md) GRPC_MUST_USE_RESULT; /* Find a key/value pair in the table... returns the index in the table of the most similar entry, or 0 if the value was not found */ typedef struct { - gpr_uint16 index; - gpr_uint8 has_value; + gpr_uint32 index; + int has_value; } grpc_chttp2_hptbl_find_result; grpc_chttp2_hptbl_find_result grpc_chttp2_hptbl_find( const grpc_chttp2_hptbl *tbl, grpc_mdelem *md); |