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175 lines
3.2 KiB
175 lines
3.2 KiB
/*++
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Copyright (c) 2000-2001 Microsoft Corporation
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Module Name:
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memory.c
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Abstract:
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DNS Resolver Service
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Memory management.
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Author:
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James Gilroy (jamesg) March 2000
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Revision History:
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--*/
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#include "local.h"
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//
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// Note: most records are created by dnsapi heap -- from
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// query or hosts file routines. However, we do create
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// name error caching records ourselves using dnslib routines.
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//
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// This means -- until we either
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// - extend query or dnslib record creation interfaces to
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// include heap parameter
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// - explicitly free and recreate
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// - tag records (dnsapi\not) somehow (flags field)
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// that
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// dnsapi and dnslib heaps MUST be the same.
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// With dnsapi now potentially having it's own heap, this means
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// dnslib should use dnsapi heap.
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//
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// So we'll put off using the debug heap for dnslib.
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//
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//
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// Note the ideal solution:
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// - dnsapi (query and hosts file) creates records in
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// the cache heap (by passed heap handle)
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// - we create our NAME_ERROR records locally in that
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// heap also (our functionalize to dnsapi)
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// - copy for RPC can be in separate heap used only by MIDL
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// - we have a separate heap for other random crap in the process
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//
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//
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// Counters for heap debugging
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//
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DWORD g_ResAllocCount = 0;
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DWORD g_ResAllocMemory = 0;
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DWORD g_ResFreeCount = 0;
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DWORD g_MidlAllocCount = 0;
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DWORD g_MidlAllocMemory = 0;
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DWORD g_MidlFreeCount = 0;
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//
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// RPC memory routines
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//
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// These are called by the stub code generated by MIDL.
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//
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PVOID
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WINAPI
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MIDL_user_allocate(
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IN size_t Size
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)
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{
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DNSDBG( HEAP, (
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"MIDL_user_allocate( %d )\n",
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Size ));
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g_MidlAllocCount++;
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g_MidlAllocMemory += Size;
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// return( ALLOCATE_HEAP( Size ) );
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// return DnsApiAlloc( Size );
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return Dns_Alloc( Size );
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}
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VOID
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WINAPI
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MIDL_user_free(
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IN OUT PVOID pMem
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)
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{
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DNSDBG( HEAP, (
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"MIDL_user_free( %p )\n",
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pMem ));
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g_MidlFreeCount++;
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// FREE_HEAP( pMem );
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// DnsApiFree( pMem );
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Dns_Free( pMem );
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}
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//
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// Resolver heap routines
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//
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// Currently (see note above) everything RPC, record allocs
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// and general allocs are in the same heap.
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// However the Tag field sets us up to dispatch to different
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// heaps. The file and line info allow us to later use
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// debug heap routines.
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//
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PVOID
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Res_Alloc(
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IN DWORD Length,
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IN DWORD Tag,
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IN PSTR pszFile,
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IN DWORD LineNo
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)
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{
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DNSDBG( HEAP, (
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"Res_Alloc( %d, tag=%d )\n",
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Length,
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Tag ));
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g_ResAllocCount++;
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g_ResAllocMemory += Length;
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return Dns_Alloc( Length );
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}
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PVOID
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Res_AllocZero(
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IN DWORD Length,
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IN DWORD Tag,
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IN PSTR pszFile,
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IN DWORD LineNo
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)
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{
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return Dns_AllocZero( Length );
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}
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VOID
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Res_Free(
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IN OUT PVOID pMemory,
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IN DWORD Tag
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)
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{
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DNSDBG( HEAP, (
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"Res_Free( %p, tag=%d )\n",
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pMemory,
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Tag ));
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g_ResFreeCount++;
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Dns_Free( pMemory );
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}
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//
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// End memory.c
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//
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