fork of https://github.com/rust-rocksdb/rust-rocksdb for nextgraph
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83 lines
2.4 KiB
83 lines
2.4 KiB
/*
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A wrapper around ROCKSDB_NAMESPACE::TransactionDBMutexFactory-provided
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condition and mutex that provides toku_pthread_*-like interface. The functions
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are named
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toku_external_{mutex|cond}_XXX
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Lock Tree uses this mutex and condition for interruptible (long) lock waits.
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(It also still uses toku_pthread_XXX calls for mutexes/conditions for
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shorter waits on internal objects)
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*/
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#pragma once
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#include <pthread.h>
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#include <stdint.h>
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#include <time.h>
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#include "rocksdb/utilities/transaction_db.h"
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#include "rocksdb/utilities/transaction_db_mutex.h"
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#include "toku_portability.h"
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using ROCKSDB_NAMESPACE::TransactionDBCondVar;
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using ROCKSDB_NAMESPACE::TransactionDBMutex;
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typedef std::shared_ptr<ROCKSDB_NAMESPACE::TransactionDBMutexFactory>
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toku_external_mutex_factory_t;
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typedef std::shared_ptr<TransactionDBMutex> toku_external_mutex_t;
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typedef std::shared_ptr<TransactionDBCondVar> toku_external_cond_t;
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static inline void toku_external_cond_init(
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toku_external_mutex_factory_t mutex_factory, toku_external_cond_t *cond) {
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*cond = mutex_factory->AllocateCondVar();
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}
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inline void toku_external_cond_destroy(toku_external_cond_t *cond) {
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cond->reset(); // this will destroy the managed object
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}
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inline void toku_external_cond_signal(toku_external_cond_t *cond) {
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(*cond)->Notify();
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}
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inline void toku_external_cond_broadcast(toku_external_cond_t *cond) {
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(*cond)->NotifyAll();
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}
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inline int toku_external_cond_timedwait(toku_external_cond_t *cond,
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toku_external_mutex_t *mutex,
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int64_t timeout_microsec) {
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auto res = (*cond)->WaitFor(*mutex, timeout_microsec);
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if (res.ok())
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return 0;
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else
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return ETIMEDOUT;
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}
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inline void toku_external_mutex_init(toku_external_mutex_factory_t factory,
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toku_external_mutex_t *mutex) {
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// Use placement new: the memory has been allocated but constructor wasn't
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// called
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new (mutex) toku_external_mutex_t;
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*mutex = factory->AllocateMutex();
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}
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inline void toku_external_mutex_lock(toku_external_mutex_t *mutex) {
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(*mutex)->Lock();
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}
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inline int toku_external_mutex_trylock(toku_external_mutex_t *mutex) {
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(*mutex)->Lock();
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return 0;
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}
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inline void toku_external_mutex_unlock(toku_external_mutex_t *mutex) {
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(*mutex)->UnLock();
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}
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inline void toku_external_mutex_destroy(toku_external_mutex_t *mutex) {
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mutex->reset(); // this will destroy the managed object
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}
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