mirror of
https://gitlab.torproject.org/tpo/core/tor.git
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68 lines
1.9 KiB
C
68 lines
1.9 KiB
C
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/* Copyright (c) 2003-2004, Roger Dingledine
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* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
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* Copyright (c) 2007-2015, The Tor Project, Inc. */
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/* See LICENSE for licensing information */
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#ifndef TOR_COMPAT_THREADS_H
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#define TOR_COMPAT_THREADS_H
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#include "orconfig.h"
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#include "torint.h"
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#include "testsupport.h"
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#if defined(HAVE_PTHREAD_H) && !defined(_WIN32)
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#include <pthread.h>
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#endif
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#if defined(_WIN32)
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#define USE_WIN32_THREADS
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#elif defined(HAVE_PTHREAD_H) && defined(HAVE_PTHREAD_CREATE)
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#define USE_PTHREADS
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#else
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#error "No threading system was found"
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#endif
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int spawn_func(void (*func)(void *), void *data);
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void spawn_exit(void) ATTR_NORETURN;
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/* Because we use threads instead of processes on most platforms (Windows,
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* Linux, etc), we need locking for them. On platforms with poor thread
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* support or broken gethostbyname_r, these functions are no-ops. */
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/** A generic lock structure for multithreaded builds. */
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typedef struct tor_mutex_t {
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#if defined(USE_WIN32_THREADS)
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/** Windows-only: on windows, we implement locks with CRITICAL_SECTIONS. */
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CRITICAL_SECTION mutex;
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#elif defined(USE_PTHREADS)
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/** Pthreads-only: with pthreads, we implement locks with
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* pthread_mutex_t. */
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pthread_mutex_t mutex;
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#else
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/** No-threads only: Dummy variable so that tor_mutex_t takes up space. */
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int _unused;
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#endif
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} tor_mutex_t;
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tor_mutex_t *tor_mutex_new(void);
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void tor_mutex_init(tor_mutex_t *m);
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void tor_mutex_acquire(tor_mutex_t *m);
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void tor_mutex_release(tor_mutex_t *m);
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void tor_mutex_free(tor_mutex_t *m);
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void tor_mutex_uninit(tor_mutex_t *m);
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unsigned long tor_get_thread_id(void);
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void tor_threads_init(void);
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void set_main_thread(void);
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int in_main_thread(void);
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typedef struct tor_cond_t tor_cond_t;
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tor_cond_t *tor_cond_new(void);
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void tor_cond_free(tor_cond_t *cond);
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int tor_cond_wait(tor_cond_t *cond, tor_mutex_t *mutex);
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void tor_cond_signal_one(tor_cond_t *cond);
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void tor_cond_signal_all(tor_cond_t *cond);
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#endif
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