зеркало из https://github.com/mozilla/pjs.git
565 строки
13 KiB
C++
565 строки
13 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include <assert.h>
|
|
#include <stdio.h>
|
|
#include "nsCOMPtr.h"
|
|
#include "nsISupports.h"
|
|
|
|
#define NS_IFOO_IID \
|
|
{ 0x6f7652e0, 0xee43, 0x11d1, \
|
|
{ 0x9c, 0xc3, 0x00, 0x60, 0x08, 0x8c, 0xa6, 0xb3 } }
|
|
|
|
class IFoo : public nsISupports
|
|
{
|
|
public:
|
|
NS_DECLARE_STATIC_IID_ACCESSOR(NS_IFOO_IID)
|
|
|
|
public:
|
|
IFoo();
|
|
// virtual dtor because IBar uses our Release()
|
|
virtual ~IFoo();
|
|
|
|
NS_IMETHOD_(nsrefcnt) AddRef();
|
|
NS_IMETHOD_(nsrefcnt) Release();
|
|
NS_IMETHOD QueryInterface( const nsIID&, void** );
|
|
|
|
static void print_totals();
|
|
|
|
private:
|
|
unsigned int refcount_;
|
|
|
|
static unsigned int total_constructions_;
|
|
static unsigned int total_destructions_;
|
|
};
|
|
|
|
NS_DEFINE_STATIC_IID_ACCESSOR(IFoo, NS_IFOO_IID)
|
|
|
|
class IBar;
|
|
|
|
// some types I'll need
|
|
typedef unsigned long NS_RESULT;
|
|
|
|
// some functions I'll need (and define below)
|
|
nsresult CreateIFoo( void** );
|
|
nsresult CreateIBar( void** result );
|
|
void AnIFooPtrPtrContext( IFoo** );
|
|
void AnISupportsPtrPtrContext( nsISupports** );
|
|
void AVoidPtrPtrContext( void** );
|
|
void set_a_IFoo( nsCOMPtr<IFoo>* result );
|
|
nsCOMPtr<IFoo> return_a_IFoo();
|
|
|
|
|
|
|
|
|
|
unsigned int IFoo::total_constructions_;
|
|
unsigned int IFoo::total_destructions_;
|
|
|
|
class test_message
|
|
{
|
|
public:
|
|
test_message()
|
|
{
|
|
printf("BEGIN unit tests for |nsCOMPtr|, compiled " __DATE__ "\n");
|
|
}
|
|
|
|
~test_message()
|
|
{
|
|
IFoo::print_totals();
|
|
printf("END unit tests for |nsCOMPtr|.\n");
|
|
}
|
|
};
|
|
|
|
test_message gTestMessage;
|
|
|
|
|
|
/*
|
|
...
|
|
*/
|
|
|
|
void
|
|
IFoo::print_totals()
|
|
{
|
|
printf("total constructions/destructions --> %d/%d\n",
|
|
total_constructions_, total_destructions_);
|
|
}
|
|
|
|
IFoo::IFoo()
|
|
: refcount_(0)
|
|
{
|
|
++total_constructions_;
|
|
printf(" new IFoo@%p [#%d]\n",
|
|
static_cast<void*>(this), total_constructions_);
|
|
}
|
|
|
|
IFoo::~IFoo()
|
|
{
|
|
++total_destructions_;
|
|
printf("IFoo@%p::~IFoo() [#%d]\n",
|
|
static_cast<void*>(this), total_destructions_);
|
|
}
|
|
|
|
nsrefcnt
|
|
IFoo::AddRef()
|
|
{
|
|
++refcount_;
|
|
printf("IFoo@%p::AddRef(), refcount --> %d\n",
|
|
static_cast<void*>(this), refcount_);
|
|
return refcount_;
|
|
}
|
|
|
|
nsrefcnt
|
|
IFoo::Release()
|
|
{
|
|
int newcount = --refcount_;
|
|
if ( newcount == 0 )
|
|
printf(">>");
|
|
|
|
printf("IFoo@%p::Release(), refcount --> %d\n",
|
|
static_cast<void*>(this), refcount_);
|
|
|
|
if ( newcount == 0 )
|
|
{
|
|
printf(" delete IFoo@%p\n", static_cast<void*>(this));
|
|
printf("<<IFoo@%p::Release()\n", static_cast<void*>(this));
|
|
delete this;
|
|
}
|
|
|
|
return newcount;
|
|
}
|
|
|
|
nsresult
|
|
IFoo::QueryInterface( const nsIID& aIID, void** aResult )
|
|
{
|
|
printf("IFoo@%p::QueryInterface()\n", static_cast<void*>(this));
|
|
nsISupports* rawPtr = 0;
|
|
nsresult status = NS_OK;
|
|
|
|
if ( aIID.Equals(GetIID()) )
|
|
rawPtr = this;
|
|
else
|
|
{
|
|
nsID iid_of_ISupports = NS_ISUPPORTS_IID;
|
|
if ( aIID.Equals(iid_of_ISupports) )
|
|
rawPtr = static_cast<nsISupports*>(this);
|
|
else
|
|
status = NS_ERROR_NO_INTERFACE;
|
|
}
|
|
|
|
NS_IF_ADDREF(rawPtr);
|
|
*aResult = rawPtr;
|
|
|
|
return status;
|
|
}
|
|
|
|
nsresult
|
|
CreateIFoo( void** result )
|
|
// a typical factory function (that calls AddRef)
|
|
{
|
|
printf(">>CreateIFoo() --> ");
|
|
IFoo* foop = new IFoo;
|
|
printf("IFoo@%p\n", static_cast<void*>(foop));
|
|
|
|
foop->AddRef();
|
|
*result = foop;
|
|
|
|
printf("<<CreateIFoo()\n");
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
set_a_IFoo( nsCOMPtr<IFoo>* result )
|
|
{
|
|
printf(">>set_a_IFoo()\n");
|
|
assert(result);
|
|
|
|
nsCOMPtr<IFoo> foop( do_QueryInterface(new IFoo) );
|
|
*result = foop;
|
|
printf("<<set_a_IFoo()\n");
|
|
}
|
|
|
|
nsCOMPtr<IFoo>
|
|
return_a_IFoo()
|
|
{
|
|
printf(">>return_a_IFoo()\n");
|
|
nsCOMPtr<IFoo> foop( do_QueryInterface(new IFoo) );
|
|
printf("<<return_a_IFoo()\n");
|
|
return foop;
|
|
}
|
|
|
|
|
|
|
|
|
|
#define NS_IBAR_IID \
|
|
{ 0x6f7652e1, 0xee43, 0x11d1, \
|
|
{ 0x9c, 0xc3, 0x00, 0x60, 0x08, 0x8c, 0xa6, 0xb3 } }
|
|
|
|
class IBar : public IFoo
|
|
{
|
|
public:
|
|
NS_DECLARE_STATIC_IID_ACCESSOR(NS_IBAR_IID)
|
|
|
|
public:
|
|
IBar();
|
|
virtual ~IBar();
|
|
|
|
NS_IMETHOD QueryInterface( const nsIID&, void** );
|
|
};
|
|
|
|
NS_DEFINE_STATIC_IID_ACCESSOR(IBar, NS_IBAR_IID)
|
|
|
|
IBar::IBar()
|
|
{
|
|
printf(" new IBar@%p\n", static_cast<void*>(this));
|
|
}
|
|
|
|
IBar::~IBar()
|
|
{
|
|
printf("IBar@%p::~IBar()\n", static_cast<void*>(this));
|
|
}
|
|
|
|
nsresult
|
|
IBar::QueryInterface( const nsID& aIID, void** aResult )
|
|
{
|
|
printf("IBar@%p::QueryInterface()\n", static_cast<void*>(this));
|
|
nsISupports* rawPtr = 0;
|
|
nsresult status = NS_OK;
|
|
|
|
if ( aIID.Equals(GetIID()) )
|
|
rawPtr = this;
|
|
else if ( aIID.Equals(NS_GET_IID(IFoo)) )
|
|
rawPtr = static_cast<IFoo*>(this);
|
|
else
|
|
{
|
|
nsID iid_of_ISupports = NS_ISUPPORTS_IID;
|
|
if ( aIID.Equals(iid_of_ISupports) )
|
|
rawPtr = static_cast<nsISupports*>(this);
|
|
else
|
|
status = NS_ERROR_NO_INTERFACE;
|
|
}
|
|
|
|
NS_IF_ADDREF(rawPtr);
|
|
*aResult = rawPtr;
|
|
|
|
return status;
|
|
}
|
|
|
|
|
|
|
|
nsresult
|
|
CreateIBar( void** result )
|
|
// a typical factory function (that calls AddRef)
|
|
{
|
|
printf(">>CreateIBar() --> ");
|
|
IBar* barp = new IBar;
|
|
printf("IBar@%p\n", static_cast<void*>(barp));
|
|
|
|
barp->AddRef();
|
|
*result = barp;
|
|
|
|
printf("<<CreateIBar()\n");
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
AnIFooPtrPtrContext( IFoo** )
|
|
{
|
|
}
|
|
|
|
void
|
|
AVoidPtrPtrContext( void** )
|
|
{
|
|
}
|
|
|
|
void
|
|
AnISupportsPtrPtrContext( nsISupports** )
|
|
{
|
|
}
|
|
|
|
static
|
|
nsresult
|
|
TestBloat_Raw_Unsafe()
|
|
{
|
|
IBar* barP = 0;
|
|
nsresult result = CreateIBar(reinterpret_cast<void**>(&barP));
|
|
|
|
if ( barP )
|
|
{
|
|
IFoo* fooP = 0;
|
|
if ( NS_SUCCEEDED( result = barP->QueryInterface(NS_GET_IID(IFoo), reinterpret_cast<void**>(&fooP)) ) )
|
|
{
|
|
fooP->print_totals();
|
|
NS_RELEASE(fooP);
|
|
}
|
|
|
|
NS_RELEASE(barP);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
static
|
|
nsresult
|
|
TestBloat_Smart()
|
|
{
|
|
nsCOMPtr<IBar> barP;
|
|
nsresult result = CreateIBar( getter_AddRefs(barP) );
|
|
|
|
nsCOMPtr<IFoo> fooP( do_QueryInterface(barP, &result) );
|
|
|
|
if ( fooP )
|
|
fooP->print_totals();
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
|
|
|
|
nsCOMPtr<IFoo> gFoop;
|
|
|
|
int
|
|
main()
|
|
{
|
|
printf(">>main()\n");
|
|
|
|
printf("sizeof(nsCOMPtr<IFoo>) --> %u\n", unsigned(sizeof(nsCOMPtr<IFoo>)));
|
|
|
|
TestBloat_Raw_Unsafe();
|
|
TestBloat_Smart();
|
|
|
|
|
|
{
|
|
printf("\n### Test 1: will a |nsCOMPtr| call |AddRef| on a pointer assigned into it?\n");
|
|
nsCOMPtr<IFoo> foop( do_QueryInterface(new IFoo) );
|
|
|
|
printf("\n### Test 2: will a |nsCOMPtr| |Release| its old pointer when a new one is assigned in?\n");
|
|
foop = do_QueryInterface(new IFoo);
|
|
|
|
// [Shouldn't compile] Is it a compile time error to try to |AddRef| by hand?
|
|
//foop->AddRef();
|
|
|
|
// [Shouldn't compile] Is it a compile time error to try to |Release| be hand?
|
|
//foop->Release();
|
|
|
|
// [Shouldn't compile] Is it a compile time error to try to |delete| an |nsCOMPtr|?
|
|
//delete foop;
|
|
|
|
printf("\n### Test 3: can you |AddRef| if you must?\n");
|
|
static_cast<IFoo*>(foop)->AddRef();
|
|
|
|
printf("\n### Test 4: can you |Release| if you must?\n");
|
|
static_cast<IFoo*>(foop)->Release();
|
|
|
|
printf("\n### Test 5: will a |nsCOMPtr| |Release| when it goes out of scope?\n");
|
|
}
|
|
|
|
{
|
|
printf("\n### Test 6: will a |nsCOMPtr| call the correct destructor?\n");
|
|
nsCOMPtr<IFoo> foop( do_QueryInterface(new IBar) );
|
|
}
|
|
|
|
{
|
|
printf("\n### Test 7: can you compare one |nsCOMPtr| with another [!=]?\n");
|
|
|
|
nsCOMPtr<IFoo> foo1p( do_QueryInterface(new IFoo) );
|
|
|
|
// [Shouldn't compile] Is it a compile time error to omit |getter_[doesnt_]AddRef[s]|?
|
|
//AnIFooPtrPtrContext(&foo1p);
|
|
|
|
// [Shouldn't compile] Is it a compile time error to omit |getter_[doesnt_]AddRef[s]|?
|
|
//AVoidPtrPtrContext(&foo1p);
|
|
|
|
nsCOMPtr<IFoo> foo2p( do_QueryInterface(new IFoo) );
|
|
|
|
if ( foo1p != foo2p )
|
|
printf("foo1p != foo2p\n");
|
|
else
|
|
printf("foo1p == foo2p\n");
|
|
|
|
printf("\n### Test 7.5: can you compare a |nsCOMPtr| with NULL, 0, nsnull [!=]?\n");
|
|
if ( foo1p != 0 )
|
|
printf("foo1p != 0\n");
|
|
if ( 0 != foo1p )
|
|
printf("0 != foo1p\n");
|
|
if ( foo1p == 0 )
|
|
printf("foo1p == 0\n");
|
|
if ( 0 == foo1p )
|
|
printf("0 == foo1p\n");
|
|
|
|
|
|
IFoo* raw_foo2p = foo2p.get();
|
|
|
|
printf("\n### Test 8: can you compare a |nsCOMPtr| with a raw interface pointer [!=]?\n");
|
|
if ( foo1p.get() != raw_foo2p )
|
|
printf("foo1p != raw_foo2p\n");
|
|
else
|
|
printf("foo1p == raw_foo2p\n");
|
|
|
|
|
|
printf("\n### Test 9: can you assign one |nsCOMPtr| into another?\n");
|
|
foo1p = foo2p;
|
|
|
|
printf("\n### Test 10: can you compare one |nsCOMPtr| with another [==]?\n");
|
|
if ( foo1p == foo2p )
|
|
printf("foo1p == foo2p\n");
|
|
else
|
|
printf("foo1p != foo2p\n");
|
|
|
|
printf("\n### Test 11: can you compare a |nsCOMPtr| with a raw interface pointer [==]?\n");
|
|
if ( raw_foo2p == foo2p.get() )
|
|
printf("raw_foo2p == foo2p\n");
|
|
else
|
|
printf("raw_foo2p != foo2p\n");
|
|
|
|
#if 1
|
|
printf("\n### Test 11.5: can you compare a |nsCOMPtr| with a raw interface pointer [==]?\n");
|
|
if ( nsCOMPtr<IFoo>( raw_foo2p ) == foo2p )
|
|
printf("raw_foo2p == foo2p\n");
|
|
else
|
|
printf("raw_foo2p != foo2p\n");
|
|
#endif
|
|
|
|
printf("\n### Test 12: bare pointer test?\n");
|
|
if ( foo1p )
|
|
printf("foo1p is not NULL\n");
|
|
else
|
|
printf("foo1p is NULL\n");
|
|
|
|
printf("\n### Test 13: numeric pointer test?\n");
|
|
if ( foo1p == 0 )
|
|
printf("foo1p is NULL\n");
|
|
else
|
|
printf("foo1p is not NULL\n");
|
|
|
|
#if 0
|
|
if ( foo1p == 1 )
|
|
printf("foo1p allowed compare with in\n");
|
|
#endif
|
|
|
|
printf("\n### Test 14: how about when two |nsCOMPtr|s referring to the same object go out of scope?\n");
|
|
}
|
|
|
|
{
|
|
printf("\n### Test 15,16 ...setup...\n");
|
|
IFoo* raw_foo1p = new IFoo;
|
|
raw_foo1p->AddRef();
|
|
|
|
IFoo* raw_foo2p = new IFoo;
|
|
raw_foo2p->AddRef();
|
|
|
|
printf("\n### Test 15: what if I don't want to |AddRef| when I construct?\n");
|
|
nsCOMPtr<IFoo> foo1p( dont_AddRef(raw_foo1p) );
|
|
//nsCOMPtr<IFoo> foo1p = dont_AddRef(raw_foo1p);
|
|
|
|
printf("\n### Test 16: what if I don't want to |AddRef| when I assign in?\n");
|
|
nsCOMPtr<IFoo> foo2p;
|
|
foo2p = dont_AddRef(raw_foo2p);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
{
|
|
printf("\n### setup for Test 17\n");
|
|
nsCOMPtr<IFoo> foop;
|
|
printf("### Test 17: basic parameter behavior?\n");
|
|
CreateIFoo( nsGetterAddRefs<IFoo>(foop) );
|
|
}
|
|
printf("### End Test 17\n");
|
|
|
|
|
|
{
|
|
printf("\n### setup for Test 18\n");
|
|
nsCOMPtr<IFoo> foop;
|
|
printf("### Test 18: basic parameter behavior, using the short form?\n");
|
|
CreateIFoo( getter_AddRefs(foop) );
|
|
}
|
|
printf("### End Test 18\n");
|
|
|
|
|
|
{
|
|
printf("\n### setup for Test 19, 20\n");
|
|
nsCOMPtr<IFoo> foop;
|
|
printf("### Test 19: reference parameter behavior?\n");
|
|
set_a_IFoo(address_of(foop));
|
|
|
|
printf("### Test 20: return value behavior?\n");
|
|
foop = return_a_IFoo();
|
|
}
|
|
printf("### End Test 19, 20\n");
|
|
|
|
{
|
|
printf("\n### setup for Test 21\n");
|
|
nsCOMPtr<IFoo> fooP;
|
|
|
|
printf("### Test 21: is |QueryInterface| called on assigning in a raw pointer?\n");
|
|
fooP = do_QueryInterface(new IFoo);
|
|
}
|
|
printf("### End Test 21\n");
|
|
|
|
{
|
|
printf("\n### setup for Test 22\n");
|
|
nsCOMPtr<IFoo> fooP;
|
|
fooP = do_QueryInterface(new IFoo);
|
|
|
|
nsCOMPtr<IFoo> foo2P;
|
|
|
|
printf("### Test 22: is |QueryInterface| _not_ called when assigning in a smart-pointer of the same type?\n");
|
|
foo2P = fooP;
|
|
}
|
|
printf("### End Test 22\n");
|
|
|
|
{
|
|
printf("\n### setup for Test 23\n");
|
|
nsCOMPtr<IBar> barP( do_QueryInterface(new IBar) );
|
|
|
|
printf("### Test 23: is |QueryInterface| called when assigning in a smart-pointer of a different type?\n");
|
|
|
|
nsCOMPtr<IFoo> fooP( do_QueryInterface(barP) );
|
|
if ( fooP )
|
|
printf("an IBar* is an IFoo*\n");
|
|
}
|
|
printf("### End Test 23\n");
|
|
|
|
|
|
{
|
|
printf("\n### setup for Test 24\n");
|
|
nsCOMPtr<IFoo> fooP( do_QueryInterface(new IFoo) );
|
|
|
|
printf("### Test 24: does |forget| avoid an AddRef/Release when assigning to another nsCOMPtr?\n");
|
|
nsCOMPtr<IFoo> fooP2( fooP.forget() );
|
|
}
|
|
printf("### End Test 24\n");
|
|
|
|
{
|
|
nsCOMPtr<IFoo> fooP;
|
|
|
|
AnIFooPtrPtrContext( getter_AddRefs(fooP) );
|
|
AVoidPtrPtrContext( getter_AddRefs(fooP) );
|
|
AnISupportsPtrPtrContext( getter_AddRefs(fooP) );
|
|
}
|
|
|
|
|
|
{
|
|
nsCOMPtr<nsISupports> supportsP;
|
|
|
|
AVoidPtrPtrContext( getter_AddRefs(supportsP) );
|
|
AnISupportsPtrPtrContext( getter_AddRefs(supportsP) );
|
|
}
|
|
|
|
|
|
printf("\n### Test 25: will a static |nsCOMPtr| |Release| before program termination?\n");
|
|
gFoop = do_QueryInterface(new IFoo);
|
|
|
|
printf("<<main()\n");
|
|
return 0;
|
|
}
|
|
|