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https://github.com/nginx/nginx.git
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119 lines
2.3 KiB
C
119 lines
2.3 KiB
C
#ifndef _NGX_THREAD_H_INCLUDED_
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#define _NGX_THREAD_H_INCLUDED_
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#include <ngx_config.h>
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#include <ngx_core.h>
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#if (NGX_THREADS)
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#define ngx_thread_volatile volatile
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#if (NGX_USE_RFORK)
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#include <sys/ipc.h>
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#include <sys/sem.h>
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#include <sched.h>
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typedef pid_t ngx_tid_t;
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#undef ngx_log_pid
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#define ngx_log_pid ngx_thread_self()
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#define ngx_log_tid 0
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#define TID_T_FMT PID_T_FMT
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#define NGX_MUTEX_LIGHT 1
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#define NGX_MUTEX_CV 2
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#define NGX_MUTEX_LOCK_BUSY 0x80000000
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typedef volatile struct {
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ngx_atomic_t lock;
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ngx_log_t *log;
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int semid;
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} ngx_mutex_t;
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#define ngx_thread_sigmask(how, set, oset) \
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(sigprocmask(how, set, oset) == -1) ? ngx_errno : 0
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#define ngx_thread_sigmask_n "sigprocmask()"
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extern char *ngx_freebsd_kern_usrstack;
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extern size_t ngx_thread_stack_size;
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static inline int ngx_gettid()
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{
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char *sp;
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if (ngx_thread_stack_size == 0) {
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return 0;
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}
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#if ( __i386__ )
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__asm__ volatile ("mov %%esp, %0" : "=q" (sp));
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#elif ( __amd64__ )
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__asm__ volatile ("mov %%rsp, %0" : "=q" (sp));
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#else
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#error "rfork()ed threads are not supported on this platform"
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#endif
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return (ngx_freebsd_kern_usrstack - sp) / ngx_thread_stack_size;
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}
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#else /* use pthreads */
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#include <pthread.h>
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typedef pthread_t ngx_tid_t;
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#define ngx_gettid() ((ngx_int_t) pthread_getspecific(0))
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#define ngx_log_tid ngx_thread_self()
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#define ngx_thread_sigmask pthread_sigmask
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#define ngx_thread_sigmask_n "pthread_sigmask()"
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#endif
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ngx_int_t ngx_init_threads(int n, size_t size, ngx_cycle_t *cycle);
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int ngx_create_thread(ngx_tid_t *tid, int (*func)(void *arg), void *arg,
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ngx_log_t *log);
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ngx_tid_t ngx_thread_self();
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ngx_mutex_t *ngx_mutex_init(ngx_log_t *log, uint flags);
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void ngx_mutex_done(ngx_mutex_t *m);
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#define ngx_mutex_trylock(m) ngx_mutex_dolock(m, 1)
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#define ngx_mutex_lock(m) ngx_mutex_dolock(m, 0)
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ngx_int_t ngx_mutex_dolock(ngx_mutex_t *m, ngx_int_t try);
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ngx_int_t ngx_mutex_unlock(ngx_mutex_t *m);
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#else /* !NGX_THREADS */
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#define ngx_thread_volatile
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#define ngx_log_tid 0
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#define TID_T_FMT "%d"
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#define ngx_mutex_lock(m) NGX_OK
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#define ngx_mutex_unlock(m)
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#endif
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#endif /* _NGX_THREAD_H_INCLUDED_ */
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