mirror of
https://github.com/godotengine/godot
synced 2024-11-05 16:53:09 +00:00
58cda02a38
-fixed TouchScreenButton with stretch2d -fixed(?) OSX crash on startup (test!!) -compilation fixes on windows -CollisionPolygon editor works again -find buttons en find dialog -TileMap editor cleanup (removed "error", made nicer) -viewport flicker fixed -make .scn default extension for saving scenes -export the rest of the network classes to gdscript
379 lines
7.1 KiB
C++
379 lines
7.1 KiB
C++
/*************************************************************************/
|
|
/* safe_refcount.h */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* http://www.godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
/* a copy of this software and associated documentation files (the */
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/*************************************************************************/
|
|
#ifndef SAFE_REFCOUNT_H
|
|
#define SAFE_REFCOUNT_H
|
|
|
|
#include "os/mutex.h"
|
|
/* x86/x86_64 GCC */
|
|
|
|
#include "platform_config.h"
|
|
|
|
|
|
#ifdef NO_THREADS
|
|
|
|
struct SafeRefCount {
|
|
|
|
int count;
|
|
|
|
public:
|
|
|
|
// destroy() is called when weak_count_ drops to zero.
|
|
|
|
bool ref() { //true on success
|
|
|
|
if (count==0)
|
|
return false;
|
|
count++;
|
|
|
|
return true;
|
|
}
|
|
|
|
int refval() { //true on success
|
|
|
|
if (count==0)
|
|
return 0;
|
|
count++;
|
|
return count;
|
|
}
|
|
|
|
bool unref() { // true if must be disposed of
|
|
|
|
if (count>0)
|
|
count--;
|
|
|
|
return count==0;
|
|
}
|
|
|
|
long get() const { // nothrow
|
|
|
|
return static_cast<int const volatile &>( count );
|
|
}
|
|
|
|
void init(int p_value=1) {
|
|
|
|
count=p_value;
|
|
};
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#else
|
|
|
|
#if defined( PLATFORM_REFCOUNT )
|
|
|
|
#include "platform_refcount.h"
|
|
|
|
|
|
#elif defined( __GNUC__ ) && ( defined( __i386__ ) || defined( __x86_64__ ) )
|
|
|
|
#define REFCOUNT_T volatile int
|
|
#define REFCOUNT_GET_T int const volatile&
|
|
|
|
static inline int atomic_conditional_increment( volatile int * pw ) {
|
|
// int rv = *pw;
|
|
// if( rv != 0 ) ++*pw;
|
|
// return rv;
|
|
|
|
int rv, tmp;
|
|
|
|
__asm__
|
|
(
|
|
"movl %0, %%eax\n\t"
|
|
"0:\n\t"
|
|
"test %%eax, %%eax\n\t"
|
|
"je 1f\n\t"
|
|
"movl %%eax, %2\n\t"
|
|
"incl %2\n\t"
|
|
"lock\n\t"
|
|
"cmpxchgl %2, %0\n\t"
|
|
"jne 0b\n\t"
|
|
"1:":
|
|
"=m"( *pw ), "=&a"( rv ), "=&r"( tmp ): // outputs (%0, %1, %2)
|
|
"m"( *pw ): // input (%3)
|
|
"cc" // clobbers
|
|
);
|
|
|
|
return rv;
|
|
}
|
|
|
|
static inline int atomic_decrement( volatile int *pw) {
|
|
|
|
// return --(*pw);
|
|
|
|
unsigned char rv;
|
|
|
|
__asm__
|
|
(
|
|
"lock\n\t"
|
|
"decl %0\n\t"
|
|
"setne %1":
|
|
"=m" (*pw), "=qm" (rv):
|
|
"m" (*pw):
|
|
"memory"
|
|
);
|
|
return static_cast<int>(rv);
|
|
}
|
|
|
|
/* PowerPC32/64 GCC */
|
|
|
|
#elif ( defined( __GNUC__ ) ) && ( defined( __powerpc__ ) || defined( __ppc__ ) )
|
|
|
|
#define REFCOUNT_T int
|
|
#define REFCOUNT_GET_T int const volatile&
|
|
|
|
inline int atomic_conditional_increment( int * pw )
|
|
{
|
|
// if( *pw != 0 ) ++*pw;
|
|
// return *pw;
|
|
|
|
int rv;
|
|
|
|
__asm__
|
|
(
|
|
"0:\n\t"
|
|
"lwarx %1, 0, %2\n\t"
|
|
"cmpwi %1, 0\n\t"
|
|
"beq 1f\n\t"
|
|
"addi %1, %1, 1\n\t"
|
|
"1:\n\t"
|
|
"stwcx. %1, 0, %2\n\t"
|
|
"bne- 0b":
|
|
|
|
"=m"( *pw ), "=&b"( rv ):
|
|
"r"( pw ), "m"( *pw ):
|
|
"cc"
|
|
);
|
|
|
|
return rv;
|
|
}
|
|
|
|
|
|
inline int atomic_decrement( int * pw )
|
|
{
|
|
// return --*pw;
|
|
|
|
int rv;
|
|
|
|
__asm__ __volatile__
|
|
(
|
|
"sync\n\t"
|
|
"0:\n\t"
|
|
"lwarx %1, 0, %2\n\t"
|
|
"addi %1, %1, -1\n\t"
|
|
"stwcx. %1, 0, %2\n\t"
|
|
"bne- 0b\n\t"
|
|
"isync":
|
|
|
|
"=m"( *pw ), "=&b"( rv ):
|
|
"r"( pw ), "m"( *pw ):
|
|
"memory", "cc"
|
|
);
|
|
|
|
return rv;
|
|
}
|
|
|
|
/* CW ARM */
|
|
|
|
#elif defined( __GNUC__ ) && ( defined( __arm__ ) )
|
|
|
|
#define REFCOUNT_T int
|
|
#define REFCOUNT_GET_T int const volatile&
|
|
|
|
inline int atomic_conditional_increment(volatile int* v)
|
|
{
|
|
int t;
|
|
int tmp;
|
|
|
|
__asm__ __volatile__(
|
|
"1: ldrex %0, [%2] \n"
|
|
" cmp %0, #0 \n"
|
|
" beq 2f \n"
|
|
" add %0, %0, #1 \n"
|
|
"2: \n"
|
|
" strex %1, %0, [%2] \n"
|
|
" cmp %1, #0 \n"
|
|
" bne 1b \n"
|
|
|
|
: "=&r" (t), "=&r" (tmp)
|
|
: "r" (v)
|
|
: "cc", "memory");
|
|
|
|
return t;
|
|
}
|
|
|
|
|
|
inline int atomic_decrement(volatile int* v)
|
|
{
|
|
int t;
|
|
int tmp;
|
|
|
|
__asm__ __volatile__(
|
|
"1: ldrex %0, [%2] \n"
|
|
" add %0, %0, #-1 \n"
|
|
" strex %1, %0, [%2] \n"
|
|
" cmp %1, #0 \n"
|
|
" bne 1b \n"
|
|
|
|
: "=&r" (t), "=&r" (tmp)
|
|
: "r" (v)
|
|
: "cc", "memory");
|
|
|
|
return t;
|
|
}
|
|
|
|
|
|
|
|
/* CW PPC */
|
|
|
|
#elif ( defined( __MWERKS__ ) ) && defined( __POWERPC__ )
|
|
|
|
inline long atomic_conditional_increment( register long * pw )
|
|
{
|
|
register int a;
|
|
|
|
asm
|
|
{
|
|
loop:
|
|
|
|
lwarx a, 0, pw
|
|
cmpwi a, 0
|
|
beq store
|
|
|
|
addi a, a, 1
|
|
|
|
store:
|
|
|
|
stwcx. a, 0, pw
|
|
bne- loop
|
|
}
|
|
|
|
return a;
|
|
}
|
|
|
|
|
|
inline long atomic_decrement( register long * pw )
|
|
{
|
|
register int a;
|
|
|
|
asm {
|
|
|
|
sync
|
|
|
|
loop:
|
|
|
|
lwarx a, 0, pw
|
|
addi a, a, -1
|
|
stwcx. a, 0, pw
|
|
bne- loop
|
|
|
|
isync
|
|
}
|
|
|
|
return a;
|
|
}
|
|
|
|
/* Any Windows (MSVC) */
|
|
|
|
#elif defined( _MSC_VER )
|
|
|
|
// made functions to not pollute namespace..
|
|
|
|
#define REFCOUNT_T long
|
|
#define REFCOUNT_GET_T long const volatile&
|
|
|
|
long atomic_conditional_increment( register long * pw );
|
|
long atomic_decrement( register long * pw );
|
|
|
|
#if 0
|
|
#elif defined( __GNUC__ ) && defined( ARMV6_ENABLED)
|
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
#else
|
|
|
|
#error This platform cannot use safe refcount, compile with NO_THREADS or implement it.
|
|
|
|
#endif
|
|
|
|
|
|
|
|
struct SafeRefCount {
|
|
|
|
REFCOUNT_T count;
|
|
|
|
public:
|
|
|
|
// destroy() is called when weak_count_ drops to zero.
|
|
|
|
bool ref() { //true on success
|
|
|
|
return atomic_conditional_increment( &count ) != 0;
|
|
}
|
|
|
|
int refval() { //true on success
|
|
|
|
return atomic_conditional_increment( &count );
|
|
}
|
|
|
|
bool unref() { // true if must be disposed of
|
|
|
|
if( atomic_decrement ( &count ) == 0 ) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
long get() const { // nothrow
|
|
|
|
return static_cast<REFCOUNT_GET_T>( count );
|
|
}
|
|
|
|
void init(int p_value=1) {
|
|
|
|
count=p_value;
|
|
};
|
|
|
|
};
|
|
|
|
|
|
|
|
#endif // no thread safe
|
|
|
|
#endif
|