Mercurial > hg > nginx-quic
view src/os/unix/ngx_thread_id.c @ 8674:e3dbd9449b14
Changed default value of sendfile_max_chunk to 2m.
The "sendfile_max_chunk" directive is important to prevent worker
monopolization by fast connections. The 2m value implies maximum 200ms
delay with 100 Mbps links, 20ms delay with 1 Gbps links, and 2ms on
10 Gbps links. It also seems to be a good value for disks.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Fri, 29 Oct 2021 20:21:57 +0300 |
parents | 466bd63b63d1 |
children |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_thread_pool.h> #if (NGX_LINUX) /* * Linux thread id is a pid of thread created by clone(2), * glibc does not provide a wrapper for gettid(). */ ngx_tid_t ngx_thread_tid(void) { return syscall(SYS_gettid); } #elif (NGX_FREEBSD) && (__FreeBSD_version >= 900031) #include <pthread_np.h> ngx_tid_t ngx_thread_tid(void) { return pthread_getthreadid_np(); } #elif (NGX_DARWIN) /* * MacOSX thread has two thread ids: * * 1) MacOSX 10.6 (Snow Leoprad) has pthread_threadid_np() returning * an uint64_t value, which is obtained using the __thread_selfid() * syscall. It is a number above 300,000. */ ngx_tid_t ngx_thread_tid(void) { uint64_t tid; (void) pthread_threadid_np(NULL, &tid); return tid; } /* * 2) Kernel thread mach_port_t returned by pthread_mach_thread_np(). * It is a number in range 100-100,000. * * return pthread_mach_thread_np(pthread_self()); */ #else ngx_tid_t ngx_thread_tid(void) { return (uint64_t) (uintptr_t) pthread_self(); } #endif