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kernel32: Allocate the global arena array only once and store a pointer to it in THHOOK.

This commit is contained in:
Alexandre Julliard 2009-09-28 19:56:44 +02:00
parent 55b5e3a727
commit 2e1b87d547
1 changed files with 10 additions and 8 deletions
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18
dlls/kernel32/global16.c
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@ -71,6 +71,7 @@ static GLOBALARENA *pGlobalArena;
static int globalArenaSize; static int globalArenaSize;
#define GLOBAL_MAX_ALLOC_SIZE 0x00ff0000 /* Largest allocation is 16M - 64K */ #define GLOBAL_MAX_ALLOC_SIZE 0x00ff0000 /* Largest allocation is 16M - 64K */
#define GLOBAL_MAX_COUNT 8192 /* Max number of allocated blocks */
#define VALID_HANDLE(handle) (((handle)>>__AHSHIFT)<globalArenaSize) #define VALID_HANDLE(handle) (((handle)>>__AHSHIFT)<globalArenaSize)
#define GET_ARENA_PTR(handle) (pGlobalArena + ((handle) >> __AHSHIFT)) #define GET_ARENA_PTR(handle) (pGlobalArena + ((handle) >> __AHSHIFT))
@ -113,15 +114,16 @@ static GLOBALARENA *GLOBAL_GetArena( WORD sel, WORD selcount )
if (((sel >> __AHSHIFT) + selcount) > globalArenaSize) if (((sel >> __AHSHIFT) + selcount) > globalArenaSize)
{ {
int newsize = ((sel >> __AHSHIFT) + selcount + 0xff) & ~0xff; int newsize = ((sel >> __AHSHIFT) + selcount + 0xff) & ~0xff;
GLOBALARENA *pNewArena;
if (pGlobalArena) if (!pGlobalArena)
pNewArena = HeapReAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, {
pGlobalArena, newsize * sizeof(GLOBALARENA) ); pGlobalArena = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY,
else GLOBAL_MAX_COUNT * sizeof(GLOBALARENA) );
pNewArena = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, newsize * sizeof(GLOBALARENA) ); if (!pGlobalArena) return 0;
if (!pNewArena) return 0; /* Hack: store a pointer to it in THHOOK instead of a handle */
pGlobalArena = pNewArena; *(GLOBALARENA **)&pThhook->hGlobalHeap = pGlobalArena;
}
if (newsize > GLOBAL_MAX_COUNT) return 0;
globalArenaSize = newsize; globalArenaSize = newsize;
} }
return pGlobalArena + (sel >> __AHSHIFT); return pGlobalArena + (sel >> __AHSHIFT);