Fix code style and consistency of RWLock and Semaphore

This commit is contained in:
Pedro J. Estébanez 2023-01-27 12:36:01 +01:00
parent 0f8f0ab126
commit 1de616d8dc
2 changed files with 31 additions and 28 deletions

View File

@ -31,39 +31,41 @@
#ifndef RW_LOCK_H
#define RW_LOCK_H
#include "core/typedefs.h"
#include <shared_mutex>
class RWLock {
mutable std::shared_timed_mutex mutex;
public:
// Lock the rwlock, block if locked by someone else
void read_lock() const {
// Lock the RWLock, block if locked by someone else.
_ALWAYS_INLINE_ void read_lock() const {
mutex.lock_shared();
}
// Unlock the rwlock, let other threads continue
void read_unlock() const {
// Unlock the RWLock, let other threads continue.
_ALWAYS_INLINE_ void read_unlock() const {
mutex.unlock_shared();
}
// Attempt to lock the RWLock for reading. True on success, false means it can't lock.
bool read_try_lock() const {
_ALWAYS_INLINE_ bool read_try_lock() const {
return mutex.try_lock_shared();
}
// Lock the rwlock, block if locked by someone else
void write_lock() {
// Lock the RWLock, block if locked by someone else.
_ALWAYS_INLINE_ void write_lock() {
mutex.lock();
}
// Unlock the rwlock, let other thwrites continue
void write_unlock() {
// Unlock the RWLock, let other threads continue.
_ALWAYS_INLINE_ void write_unlock() {
mutex.unlock();
}
// Attempt to lock the RWLock for writing. True on success, false means it can't lock.
bool write_try_lock() {
_ALWAYS_INLINE_ bool write_try_lock() {
return mutex.try_lock();
}
};
@ -72,11 +74,11 @@ class RWLockRead {
const RWLock &lock;
public:
RWLockRead(const RWLock &p_lock) :
_ALWAYS_INLINE_ RWLockRead(const RWLock &p_lock) :
lock(p_lock) {
lock.read_lock();
}
~RWLockRead() {
_ALWAYS_INLINE_ ~RWLockRead() {
lock.read_unlock();
}
};
@ -85,11 +87,11 @@ class RWLockWrite {
RWLock &lock;
public:
RWLockWrite(RWLock &p_lock) :
_ALWAYS_INLINE_ RWLockWrite(RWLock &p_lock) :
lock(p_lock) {
lock.write_lock();
}
~RWLockWrite() {
_ALWAYS_INLINE_ ~RWLockWrite() {
lock.write_unlock();
}
};

View File

@ -39,32 +39,33 @@
class Semaphore {
private:
mutable std::mutex mutex_;
mutable std::condition_variable condition_;
mutable unsigned long count_ = 0; // Initialized as locked.
mutable std::mutex mutex;
mutable std::condition_variable condition;
mutable uint32_t count = 0; // Initialized as locked.
public:
_ALWAYS_INLINE_ void post() const {
std::lock_guard<decltype(mutex_)> lock(mutex_);
++count_;
condition_.notify_one();
std::lock_guard lock(mutex);
count++;
condition.notify_one();
}
_ALWAYS_INLINE_ void wait() const {
std::unique_lock<decltype(mutex_)> lock(mutex_);
while (!count_) { // Handle spurious wake-ups.
condition_.wait(lock);
std::unique_lock lock(mutex);
while (!count) { // Handle spurious wake-ups.
condition.wait(lock);
}
--count_;
count--;
}
_ALWAYS_INLINE_ bool try_wait() const {
std::lock_guard<decltype(mutex_)> lock(mutex_);
if (count_) {
--count_;
std::lock_guard lock(mutex);
if (count) {
count--;
return true;
} else {
return false;
}
return false;
}
};