Mercurial > hg > nginx-quic
view src/core/ngx_palloc.h @ 8743:5d09596909c6 stable-1.20
Upstream: fixed timeouts with gRPC, SSL and select (ticket #2229).
With SSL it is possible that an established connection is ready for
reading after the handshake. Further, events might be already disabled
in case of level-triggered event methods. If this happens and
ngx_http_upstream_send_request() blocks waiting for some data from
the upstream, such as flow control in case of gRPC, the connection
will time out due to no read events on the upstream connection.
Fix is to explicitly check the c->read->ready flag if sending request
blocks and post a read event if it is set.
Note that while it is possible to modify ngx_ssl_handshake() to keep
read events active, this won't completely resolve the issue, since
there can be data already received during the SSL handshake
(see 573bd30e46b4).
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Fri, 20 Aug 2021 03:53:56 +0300 |
parents | ef935cd7ed8d |
children |
line wrap: on
line source
/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #ifndef _NGX_PALLOC_H_INCLUDED_ #define _NGX_PALLOC_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> /* * NGX_MAX_ALLOC_FROM_POOL should be (ngx_pagesize - 1), i.e. 4095 on x86. * On Windows NT it decreases a number of locked pages in a kernel. */ #define NGX_MAX_ALLOC_FROM_POOL (ngx_pagesize - 1) #define NGX_DEFAULT_POOL_SIZE (16 * 1024) #define NGX_POOL_ALIGNMENT 16 #define NGX_MIN_POOL_SIZE \ ngx_align((sizeof(ngx_pool_t) + 2 * sizeof(ngx_pool_large_t)), \ NGX_POOL_ALIGNMENT) typedef void (*ngx_pool_cleanup_pt)(void *data); typedef struct ngx_pool_cleanup_s ngx_pool_cleanup_t; struct ngx_pool_cleanup_s { ngx_pool_cleanup_pt handler; void *data; ngx_pool_cleanup_t *next; }; typedef struct ngx_pool_large_s ngx_pool_large_t; struct ngx_pool_large_s { ngx_pool_large_t *next; void *alloc; }; typedef struct { u_char *last; u_char *end; ngx_pool_t *next; ngx_uint_t failed; } ngx_pool_data_t; struct ngx_pool_s { ngx_pool_data_t d; size_t max; ngx_pool_t *current; ngx_chain_t *chain; ngx_pool_large_t *large; ngx_pool_cleanup_t *cleanup; ngx_log_t *log; }; typedef struct { ngx_fd_t fd; u_char *name; ngx_log_t *log; } ngx_pool_cleanup_file_t; ngx_pool_t *ngx_create_pool(size_t size, ngx_log_t *log); void ngx_destroy_pool(ngx_pool_t *pool); void ngx_reset_pool(ngx_pool_t *pool); void *ngx_palloc(ngx_pool_t *pool, size_t size); void *ngx_pnalloc(ngx_pool_t *pool, size_t size); void *ngx_pcalloc(ngx_pool_t *pool, size_t size); void *ngx_pmemalign(ngx_pool_t *pool, size_t size, size_t alignment); ngx_int_t ngx_pfree(ngx_pool_t *pool, void *p); ngx_pool_cleanup_t *ngx_pool_cleanup_add(ngx_pool_t *p, size_t size); void ngx_pool_run_cleanup_file(ngx_pool_t *p, ngx_fd_t fd); void ngx_pool_cleanup_file(void *data); void ngx_pool_delete_file(void *data); #endif /* _NGX_PALLOC_H_INCLUDED_ */