Mercurial > hg > nginx
view src/http/v2/ngx_http_v2_encode.c @ 7670:ccb5ff87ab3e
Cache: introduced min_free cache clearing.
Clearing cache based on free space left on a file system is
expected to allow better disk utilization in some cases, notably
when disk space might be also used for something other than nginx
cache (including nginx own temporary files) and while loading
cache (when cache size might be inaccurate for a while, effectively
disabling max_size cache clearing).
Based on a patch by Adam Bambuch.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Mon, 22 Jun 2020 18:03:00 +0300 |
parents | 87e9e4aabf1b |
children | 336084ff943b |
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/* * Copyright (C) Nginx, Inc. * Copyright (C) Valentin V. Bartenev */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_http.h> static u_char *ngx_http_v2_write_int(u_char *pos, ngx_uint_t prefix, ngx_uint_t value); u_char * ngx_http_v2_string_encode(u_char *dst, u_char *src, size_t len, u_char *tmp, ngx_uint_t lower) { size_t hlen; hlen = ngx_http_v2_huff_encode(src, len, tmp, lower); if (hlen > 0) { *dst = NGX_HTTP_V2_ENCODE_HUFF; dst = ngx_http_v2_write_int(dst, ngx_http_v2_prefix(7), hlen); return ngx_cpymem(dst, tmp, hlen); } *dst = NGX_HTTP_V2_ENCODE_RAW; dst = ngx_http_v2_write_int(dst, ngx_http_v2_prefix(7), len); if (lower) { ngx_strlow(dst, src, len); return dst + len; } return ngx_cpymem(dst, src, len); } static u_char * ngx_http_v2_write_int(u_char *pos, ngx_uint_t prefix, ngx_uint_t value) { if (value < prefix) { *pos++ |= value; return pos; } *pos++ |= prefix; value -= prefix; while (value >= 128) { *pos++ = value % 128 + 128; value /= 128; } *pos++ = (u_char) value; return pos; }