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expose directly callable shared allocator methods

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This commit is contained in:
jband%netscape.com 1999-04-01 23:12:49 +00:00
parent 6f8c90d095
commit e01d326056
4 changed files with 148 additions and 0 deletions
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54
xpcom/base/nsAllocator.cpp
View File

@ -21,6 +21,8 @@
////////////////////////////////////////////////////////////////////////////////
#include "nsAllocator.h"
#include "nsIServiceManager.h"
#include <string.h> /* for memcpy */
static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
static NS_DEFINE_IID(kIAllocatorIID, NS_IALLOCATOR_IID);
@ -127,3 +129,55 @@ nsAllocatorFactory::LockFactory(PRBool aLock)
}
////////////////////////////////////////////////////////////////////////////////
/*
* Public shortcuts to the shared allocator's methods
* (all these methods are class statics)
*/
// public:
void* NSTaskMem::Alloc(PRUint32 size)
{
if(!EnsureAllocator()) return NULL;
return mAllocator->Alloc(size);
}
void* NSTaskMem::Realloc(void* ptr, PRUint32 size)
{
if(!EnsureAllocator()) return NULL;
return mAllocator->Realloc(ptr, size);
}
void NSTaskMem::Free(void* ptr)
{
if(!EnsureAllocator()) return;
mAllocator->Free(ptr);
}
void NSTaskMem::HeapMinimize()
{
if(!EnsureAllocator()) return;
mAllocator->HeapMinimize();
}
void* NSTaskMem::Clone(const void* ptr, PRUint32 size)
{
if(!ptr || !EnsureAllocator()) return NULL;
void* p = mAllocator->Alloc(size);
if(p) memcpy(p, ptr, size);
return p;
}
// private:
nsIAllocator* NSTaskMem::mAllocator = NULL;
PRBool NSTaskMem::FetchAllocator()
{
NS_DEFINE_IID(kAllocatorCID, NS_ALLOCATOR_CID);
NS_DEFINE_IID(kIAllocatorIID, NS_IALLOCATOR_IID);
nsServiceManager::GetService(kAllocatorCID, kIAllocatorIID,
(nsISupports **)&mAllocator);
NS_ASSERTION(mAllocator, "failed to get Allocator!");
return (PRBool) mAllocator;
}

20
xpcom/base/nsIAllocator.h
View File

@ -78,6 +78,26 @@ public:
{0x81, 0x77, 0x00, 0x60, 0x08, 0x11, 0x9d, 0x7a} \
}
/*
* Public shortcuts to the shared allocator's methods
*/
class NSTaskMem
{
public:
static NS_EXPORT void* Alloc(PRUint32 size);
static NS_EXPORT void* Realloc(void* ptr, PRUint32 size);
static NS_EXPORT void Free(void* ptr);
static NS_EXPORT void HeapMinimize();
static NS_EXPORT void* Clone(const void* ptr, PRUint32 size);
private:
NSTaskMem(); // not implemented
static PRBool EnsureAllocator() {return mAllocator || FetchAllocator();}
static PRBool FetchAllocator();
static nsIAllocator* mAllocator;
};
////////////////////////////////////////////////////////////////////////////////
#endif /* nsIAllocator_h___ */

20
xpcom/public/nsIAllocator.h
View File

@ -78,6 +78,26 @@ public:
{0x81, 0x77, 0x00, 0x60, 0x08, 0x11, 0x9d, 0x7a} \
}
/*
* Public shortcuts to the shared allocator's methods
*/
class NSTaskMem
{
public:
static NS_EXPORT void* Alloc(PRUint32 size);
static NS_EXPORT void* Realloc(void* ptr, PRUint32 size);
static NS_EXPORT void Free(void* ptr);
static NS_EXPORT void HeapMinimize();
static NS_EXPORT void* Clone(const void* ptr, PRUint32 size);
private:
NSTaskMem(); // not implemented
static PRBool EnsureAllocator() {return mAllocator || FetchAllocator();}
static PRBool FetchAllocator();
static nsIAllocator* mAllocator;
};
////////////////////////////////////////////////////////////////////////////////
#endif /* nsIAllocator_h___ */

54
xpcom/src/nsAllocator.cpp
View File

@ -21,6 +21,8 @@
////////////////////////////////////////////////////////////////////////////////
#include "nsAllocator.h"
#include "nsIServiceManager.h"
#include <string.h> /* for memcpy */
static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
static NS_DEFINE_IID(kIAllocatorIID, NS_IALLOCATOR_IID);
@ -127,3 +129,55 @@ nsAllocatorFactory::LockFactory(PRBool aLock)
}
////////////////////////////////////////////////////////////////////////////////
/*
* Public shortcuts to the shared allocator's methods
* (all these methods are class statics)
*/
// public:
void* NSTaskMem::Alloc(PRUint32 size)
{
if(!EnsureAllocator()) return NULL;
return mAllocator->Alloc(size);
}
void* NSTaskMem::Realloc(void* ptr, PRUint32 size)
{
if(!EnsureAllocator()) return NULL;
return mAllocator->Realloc(ptr, size);
}
void NSTaskMem::Free(void* ptr)
{
if(!EnsureAllocator()) return;
mAllocator->Free(ptr);
}
void NSTaskMem::HeapMinimize()
{
if(!EnsureAllocator()) return;
mAllocator->HeapMinimize();
}
void* NSTaskMem::Clone(const void* ptr, PRUint32 size)
{
if(!ptr || !EnsureAllocator()) return NULL;
void* p = mAllocator->Alloc(size);
if(p) memcpy(p, ptr, size);
return p;
}
// private:
nsIAllocator* NSTaskMem::mAllocator = NULL;
PRBool NSTaskMem::FetchAllocator()
{
NS_DEFINE_IID(kAllocatorCID, NS_ALLOCATOR_CID);
NS_DEFINE_IID(kIAllocatorIID, NS_IALLOCATOR_IID);
nsServiceManager::GetService(kAllocatorCID, kIAllocatorIID,
(nsISupports **)&mAllocator);
NS_ASSERTION(mAllocator, "failed to get Allocator!");
return (PRBool) mAllocator;
}