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63 lines
2.0 KiB
63 lines
2.0 KiB
2 months ago
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/*
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* The UCW Library -- Threading Helpers
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*
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* (c) 2006--2012 Martin Mares <mj@ucw.cz>
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*
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* This software may be freely distributed and used according to the terms
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* of the GNU Lesser General Public License.
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*/
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#ifndef _UCW_THREADS_H
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#define _UCW_THREADS_H
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#include <ucw/sighandler.h>
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/* This structure holds per-thread data */
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struct ucwlib_context {
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int _thread_id; // Thread ID (either kernel tid or a counter, use ucwlib_thread_id())
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int temp_counter; // Counter for fb-temp.c
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struct asio_queue *io_queue; // Async I/O queue for fb-direct.c
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ucw_sighandler_t *signal_handlers; // Signal handlers for sighandler.c
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struct main_context *main_context; // Current context for mainloop.c
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struct cf_context *cf_context; // Current context for configuration parser
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// Resources and transactions:
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struct respool *current_respool; // Current resource pool
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struct mempool *trans_pool; // Transaction mempool
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struct trans *current_trans; // Currently open transaction
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};
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#ifdef CONFIG_UCW_THREADS
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#ifdef CONFIG_UCW_TLS
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extern __thread struct ucwlib_context ucwlib_context;
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static inline struct ucwlib_context *ucwlib_thread_context(void) { return &ucwlib_context; }
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int ucwlib_thread_id(struct ucwlib_context *c);
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#else
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struct ucwlib_context *ucwlib_thread_context(void);
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static inline int ucwlib_thread_id(struct ucwlib_context *c) { return c->_thread_id; }
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#endif
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/* Global lock used for initialization, cleanup and other not so frequently accessed global state */
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void ucwlib_lock(void);
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void ucwlib_unlock(void);
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extern uint ucwlib_thread_stack_size;
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#else
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/* We have no threads, let's simulate the context and locking */
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extern struct ucwlib_context ucwlib_default_context;
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static inline struct ucwlib_context *ucwlib_thread_context(void) { return &ucwlib_default_context; }
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static inline int ucwlib_thread_id(struct ucwlib_context *c UNUSED) { return 0; }
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static inline void ucwlib_lock(void) { }
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static inline void ucwlib_unlock(void) { }
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#endif
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#endif
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