godot/core/os/thread_dummy.cpp
Pedro J. Estébanez 18fbdbb456 Reimplement Mutex with C++'s <mutex>
Main:
- It's now implemented thanks to `<mutex>`. No more platform-specific implementations.
- `BinaryMutex` (non-recursive) is added, as an alternative for special cases.
- Doesn't need allocation/deallocation anymore. It can live in the stack and be part of other classes.
- Because of that, it's methods are now `const` and the inner mutex is `mutable` so it can be easily used in `const` contexts.
- A no-op implementation is provided if `NO_THREADS` is defined. No more need to add `#ifdef NO_THREADS` just for this.
- `MutexLock` now takes a reference. At this point the cases of null `Mutex`es are rare. If you ever need that, just don't use `MutexLock`.
- Thread-safe utilities are therefore simpler now.

Misc.:
- `ScopedMutexLock` is dropped and replaced by `MutexLock`, because they were pretty much the same.
- Every case of lock, do-something, unlock is replaced by `MutexLock` (complex cases where it's not straightfoward are kept as as explicit lock and unlock).
- `ShaderRD` contained an `std::mutex`, which has been replaced by `Mutex`.
2020-02-26 20:40:10 +01:00

58 lines
2.7 KiB
C++

/*************************************************************************/
/* thread_dummy.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
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#include "thread_dummy.h"
#include "core/os/memory.h"
Thread *ThreadDummy::create(ThreadCreateCallback p_callback, void *p_user, const Thread::Settings &p_settings) {
return memnew(ThreadDummy);
};
void ThreadDummy::make_default() {
Thread::create_func = &ThreadDummy::create;
};
SemaphoreOld *SemaphoreDummy::create() {
return memnew(SemaphoreDummy);
};
void SemaphoreDummy::make_default() {
SemaphoreOld::create_func = &SemaphoreDummy::create;
};
RWLock *RWLockDummy::create() {
return memnew(RWLockDummy);
};
void RWLockDummy::make_default() {
RWLock::create_func = &RWLockDummy::create;
};