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hash_offt: standalone hash for curl_off_t

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Add a standalong hash table for curl_offt_t as key. This allows a
smaller memory footprint and faster lookups as we do not need to deal
with variable key lengths.

Use in all places we had the standard hash for this purpose.

Closes #16442
This commit is contained in:
Stefan Eissing 2025-02-23 12:20:17 +01:00 • committed by Daniel Stenberg
parent 2809723ddf
commit 1aa69221be
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GPG key ID: 5CC908FDB71E12C2
14 changed files with 392 additions and 110 deletions
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12
lib/http2.c
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@ -29,7 +29,7 @@
#include <nghttp2/nghttp2.h>
#include "urldata.h"
#include "bufq.h"
#include "hash.h"
#include "hash_offt.h"
#include "http1.h"
#include "http2.h"
#include "http.h"
@ -135,7 +135,7 @@ struct cf_h2_ctx {
struct bufc_pool stream_bufcp; /* spares for stream buffers */
struct dynbuf scratch; /* scratch buffer for temp use */
struct Curl_hash streams; /* hash of `data->mid` to `h2_stream_ctx` */
struct Curl_hash_offt streams; /* hash of `data->mid` to `h2_stream_ctx` */
size_t drain_total; /* sum of all stream's UrlState drain */
uint32_t max_concurrent_streams;
uint32_t goaway_error; /* goaway error code from server */
@ -155,7 +155,7 @@ struct cf_h2_ctx {
#define CF_CTX_CALL_DATA(cf) \
((struct cf_h2_ctx *)(cf)->ctx)->call_data
static void h2_stream_hash_free(void *stream);
static void h2_stream_hash_free(curl_off_t id, void *stream);
static void cf_h2_ctx_init(struct cf_h2_ctx *ctx, bool via_h1_upgrade)
{
@ -176,8 +176,7 @@ static void cf_h2_ctx_free(struct cf_h2_ctx *ctx)
Curl_bufq_free(&ctx->outbufq);
Curl_bufcp_free(&ctx->stream_bufcp);
Curl_dyn_free(&ctx->scratch);
Curl_hash_clean(&ctx->streams);
Curl_hash_destroy(&ctx->streams);
Curl_hash_offt_destroy(&ctx->streams);
memset(ctx, 0, sizeof(*ctx));
}
free(ctx);
@ -267,8 +266,9 @@ static void h2_stream_ctx_free(struct h2_stream_ctx *stream)
free(stream);
}
static void h2_stream_hash_free(void *stream)
static void h2_stream_hash_free(curl_off_t id, void *stream)
{
(void)id;
DEBUGASSERT(stream);
h2_stream_ctx_free((struct h2_stream_ctx *)stream);
}