Mercurial > hg > nginx
view src/http/v3/ngx_http_v3_parse.h @ 9270:3d455e37abf8
Core: PID file writing synchronization.
Now, ngx_daemon() does not call exit() in the parent process immediately,
but instead waits for the child process to signal it actually started (and
wrote the PID file if configured to). This ensures that the PID file
already exists when the parent process exits.
To make sure that signal handlers won't cause unexpected logging in the
parent process if the child process dies (for example, due to errors when
writing the PID file), ngx_init_signals() is moved to the child process.
This resolves "PID file ... not readable (yet?) after start" and "Failed
to parse PID from file..." errors as observed with systemd.
Note that the errors observed are considered to be a bug in systemd, which
isn't able to work properly with traditional Unix daemons. Still, the
workaround is implemented to make sure there will be no OS vendor patches
trying to address this.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Mon, 13 May 2024 06:13:22 +0300 |
parents | d6e191a583cc |
children |
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/* * Copyright (C) Roman Arutyunyan * Copyright (C) Nginx, Inc. */ #ifndef _NGX_HTTP_V3_PARSE_H_INCLUDED_ #define _NGX_HTTP_V3_PARSE_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_http.h> typedef struct { ngx_uint_t state; uint64_t value; } ngx_http_v3_parse_varlen_int_t; typedef struct { ngx_uint_t state; ngx_uint_t shift; uint64_t value; } ngx_http_v3_parse_prefix_int_t; typedef struct { ngx_uint_t state; uint64_t id; ngx_http_v3_parse_varlen_int_t vlint; } ngx_http_v3_parse_settings_t; typedef struct { ngx_uint_t state; ngx_uint_t insert_count; ngx_uint_t delta_base; ngx_uint_t sign; ngx_uint_t base; ngx_http_v3_parse_prefix_int_t pint; } ngx_http_v3_parse_field_section_prefix_t; typedef struct { ngx_uint_t state; ngx_uint_t length; ngx_uint_t huffman; ngx_str_t value; u_char *last; u_char huffstate; } ngx_http_v3_parse_literal_t; typedef struct { ngx_uint_t state; ngx_uint_t index; ngx_uint_t base; ngx_uint_t dynamic; ngx_str_t name; ngx_str_t value; ngx_http_v3_parse_prefix_int_t pint; ngx_http_v3_parse_literal_t literal; } ngx_http_v3_parse_field_t; typedef struct { ngx_uint_t state; ngx_http_v3_parse_field_t field; } ngx_http_v3_parse_field_rep_t; typedef struct { ngx_uint_t state; ngx_uint_t type; ngx_uint_t length; ngx_http_v3_parse_varlen_int_t vlint; ngx_http_v3_parse_field_section_prefix_t prefix; ngx_http_v3_parse_field_rep_t field_rep; } ngx_http_v3_parse_headers_t; typedef struct { ngx_uint_t state; ngx_http_v3_parse_field_t field; ngx_http_v3_parse_prefix_int_t pint; } ngx_http_v3_parse_encoder_t; typedef struct { ngx_uint_t state; ngx_http_v3_parse_prefix_int_t pint; } ngx_http_v3_parse_decoder_t; typedef struct { ngx_uint_t state; ngx_uint_t type; ngx_uint_t length; ngx_http_v3_parse_varlen_int_t vlint; ngx_http_v3_parse_settings_t settings; } ngx_http_v3_parse_control_t; typedef struct { ngx_uint_t state; ngx_http_v3_parse_varlen_int_t vlint; union { ngx_http_v3_parse_encoder_t encoder; ngx_http_v3_parse_decoder_t decoder; ngx_http_v3_parse_control_t control; } u; } ngx_http_v3_parse_uni_t; typedef struct { ngx_uint_t state; ngx_uint_t type; ngx_uint_t length; ngx_http_v3_parse_varlen_int_t vlint; } ngx_http_v3_parse_data_t; /* * Parse functions return codes: * NGX_DONE - parsing done * NGX_OK - sub-element done * NGX_AGAIN - more data expected * NGX_BUSY - waiting for external event * NGX_ERROR - internal error * NGX_HTTP_V3_ERROR_XXX - HTTP/3 or QPACK error */ ngx_int_t ngx_http_v3_parse_headers(ngx_connection_t *c, ngx_http_v3_parse_headers_t *st, ngx_buf_t *b); ngx_int_t ngx_http_v3_parse_data(ngx_connection_t *c, ngx_http_v3_parse_data_t *st, ngx_buf_t *b); ngx_int_t ngx_http_v3_parse_uni(ngx_connection_t *c, ngx_http_v3_parse_uni_t *st, ngx_buf_t *b); #endif /* _NGX_HTTP_V3_PARSE_H_INCLUDED_ */