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