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view src/core/ngx_shmtx.h @ 8954:41796b6804d9 quic

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QUIC: support for setting QUIC methods with LibreSSL. Setting QUIC methods is converted to use C99 designated initializers for simplicity, as LibreSSL 3.6.0 has different SSL_QUIC_METHOD layout. Additionally, only set_read_secret/set_write_secret callbacks are set. Although they are preferred in LibreSSL over set_encryption_secrets, better be on a safe side as LibreSSL has unexpectedly incompatible set_encryption_secrets calling convention expressed in passing read and write secrets split in separate calls, unlike this is documented in old BoringSSL sources. To avoid introducing further changes for the old API, it is simply disabled.
author Sergey Kandaurov <pluknet@nginx.com>
date Thu, 20 Oct 2022 16:21:06 +0400
parents 512c741fa841
children
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/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_SHMTX_H_INCLUDED_
#define _NGX_SHMTX_H_INCLUDED_


#include <ngx_config.h>
#include <ngx_core.h>


typedef struct {
    ngx_atomic_t   lock;
#if (NGX_HAVE_POSIX_SEM)
    ngx_atomic_t   wait;
#endif
} ngx_shmtx_sh_t;


typedef struct {
#if (NGX_HAVE_ATOMIC_OPS)
    ngx_atomic_t  *lock;
#if (NGX_HAVE_POSIX_SEM)
    ngx_atomic_t  *wait;
    ngx_uint_t     semaphore;
    sem_t          sem;
#endif
#else
    ngx_fd_t       fd;
    u_char        *name;
#endif
    ngx_uint_t     spin;
} ngx_shmtx_t;


ngx_int_t ngx_shmtx_create(ngx_shmtx_t *mtx, ngx_shmtx_sh_t *addr,
    u_char *name);
void ngx_shmtx_destroy(ngx_shmtx_t *mtx);
ngx_uint_t ngx_shmtx_trylock(ngx_shmtx_t *mtx);
void ngx_shmtx_lock(ngx_shmtx_t *mtx);
void ngx_shmtx_unlock(ngx_shmtx_t *mtx);
ngx_uint_t ngx_shmtx_force_unlock(ngx_shmtx_t *mtx, ngx_pid_t pid);


#endif /* _NGX_SHMTX_H_INCLUDED_ */