Panda3D
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lightMutexDirect.h
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/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file lightMutexDirect.h
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* @author drose
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* @date 2008-10-08
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*/
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#ifndef LIGHTMUTEXDIRECT_H
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#define LIGHTMUTEXDIRECT_H
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#include "
pandabase.h
"
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#include "
mutexImpl.h
"
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#include "
mutexTrueImpl.h
"
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#include "
pnotify.h
"
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class
Thread
;
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#ifndef DEBUG_THREADS
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/**
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* This class implements a lightweight Mutex by making direct calls to the
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* underlying implementation layer. It doesn't perform any debugging
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* operations.
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*/
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class
EXPCL_PANDA_PIPELINE
LightMutexDirect
{
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protected
:
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LightMutexDirect
() =
default
;
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LightMutexDirect
(
const
LightMutexDirect
©) =
delete
;
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~
LightMutexDirect
() =
default
;
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void
operator = (
const
LightMutexDirect
©) =
delete
;
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public
:
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INLINE
void
lock();
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INLINE
bool
try_lock();
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INLINE
void
unlock();
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PUBLISHED:
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BLOCKING INLINE
void
acquire()
const
;
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INLINE
void
release()
const
;
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INLINE
bool
debug_is_locked()
const
;
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INLINE
void
set_name(
const
std::string &name);
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INLINE
void
clear_name();
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INLINE
bool
has_name()
const
;
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INLINE std::string get_name()
const
;
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void
output(std::ostream &out)
const
;
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private
:
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#ifdef DO_PSTATS
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// When PStats is compiled in, we use the full implementation of LightMutex,
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// even in the SIMPLE_THREADS case. We have to do this since any PStatTimer
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// call may trigger a context switch, and any low-level context switch
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// requires all containing mutexes to be true mutexes.
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mutable
MutexTrueImpl
_impl;
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#else
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mutable
MutexImpl
_impl;
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#endif // DO_PSTATS
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};
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INLINE std::ostream &
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operator << (std::ostream &out,
const
LightMutexDirect
&m) {
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m.
output
(out);
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return
out;
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}
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#include "
lightMutexDirect.I
"
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#endif // !DEBUG_THREADS
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#endif
pandabase.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
LightMutexDirect::output
void output(std::ostream &out) const
This method is declared virtual in LightMutexDebug, but non-virtual in LightMutexDirect.
Definition:
lightMutexDirect.cxx:23
mutexTrueImpl.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
pnotify.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
mutexImpl.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
LightMutexDirect
This class implements a lightweight Mutex by making direct calls to the underlying implementation lay...
Definition:
lightMutexDirect.h:31
MutexDummyImpl
A fake mutex implementation for single-threaded applications that don't need any synchronization cont...
Definition:
mutexDummyImpl.h:24
lightMutexDirect.I
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
Thread
A thread; that is, a lightweight process.
Definition:
thread.h:46
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