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samba-mirror/source4/include/talloc.h

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first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
#ifndef _TALLOC_H_
#define _TALLOC_H_
/*
Unix SMB/CIFS implementation.
Samba temporary memory allocation functions
r1983: a completely new implementation of talloc This version does the following: 1) talloc_free(), talloc_realloc() and talloc_steal() lose their (redundent) first arguments 2) you can use _any_ talloc pointer as a talloc context to allocate more memory. This allows you to create complex data structures where the top level structure is the logical parent of the next level down, and those are the parents of the level below that. Then destroy either the lot with a single talloc_free() or destroy any sub-part with a talloc_free() of that part 3) you can name any pointer. Use talloc_named() which is just like talloc() but takes the printf style name argument as well as the parent context and the size. The whole thing ends up being a very simple piece of code, although some of the pointer walking gets hairy. So far, I'm just using the new talloc() like the old one. The next step is to actually take advantage of the new interface properly. Expect some new commits soon that simplify some common coding styles in samba4 by using the new talloc(). (This used to be commit e35bb094c52e550b3105dd1638d8d90de71d854f)
2004-08-21 01:54:46 +00:00
Copyright (C) Andrew Tridgell 2004
first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
r1983: a completely new implementation of talloc This version does the following: 1) talloc_free(), talloc_realloc() and talloc_steal() lose their (redundent) first arguments 2) you can use _any_ talloc pointer as a talloc context to allocate more memory. This allows you to create complex data structures where the top level structure is the logical parent of the next level down, and those are the parents of the level below that. Then destroy either the lot with a single talloc_free() or destroy any sub-part with a talloc_free() of that part 3) you can name any pointer. Use talloc_named() which is just like talloc() but takes the printf style name argument as well as the parent context and the size. The whole thing ends up being a very simple piece of code, although some of the pointer walking gets hairy. So far, I'm just using the new talloc() like the old one. The next step is to actually take advantage of the new interface properly. Expect some new commits soon that simplify some common coding styles in samba4 by using the new talloc(). (This used to be commit e35bb094c52e550b3105dd1638d8d90de71d854f)
2004-08-21 01:54:46 +00:00
/* this is only needed for compatibility with the old talloc */
typedef void TALLOC_CTX;
first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
r2649: - used some cpp tricks to make users of talloc() and talloc_realloc() to get auto-naming of pointers very cheaply. - fixed a couple of memory leaks found with the new tricks A typical exit report for smbd is now: talloc report on 'null_context' (total 811 bytes in 54 blocks) auth/auth_sam.c:334 contains 20 bytes in 1 blocks struct auth_serversupplied_info contains 498 bytes in 33 blocks UNNAMED contains 8 bytes in 1 blocks lib/data_blob.c:40 contains 16 bytes in 1 blocks iconv(CP850,UTF8) contains 61 bytes in 4 blocks iconv(UTF8,CP850) contains 61 bytes in 4 blocks iconv(UTF8,UTF-16LE) contains 67 bytes in 4 blocks iconv(UTF-16LE,UTF8) contains 67 bytes in 4 blocks UNNAMED contains 13 bytes in 1 blocks which is much better than before (This used to be commit 6e721393d03afd3c2f8ced8422533547a9e33342)
2004-09-26 04:59:03 +00:00
/*
this uses a little trick to allow __LINE__ to be stringified
*/
#define _STRING_LINE_(s) #s
#define _STRING_LINE2_(s) _STRING_LINE_(s)
#define __LINESTR__ _STRING_LINE2_(__LINE__)
#define __location__ __FILE__ ":" __LINESTR__
added a basic dcerpc endpoint mapper to Samba4. Currently only implements the epm_Lookup() call, I'll add the other important calls soon. I was rather pleased to find that epm_Lookup() worked first time, which is particularly surprising given its complexity. This required quite a bit of new infrastructure: * a generic way of handling dcerpc policy handles in the rpc server * added type checked varients of talloc. These are much less error prone. I'd like to move to using these for nearly all uses of talloc. * added more dcerpc fault handling code, and translation from NTSTATUS to a dcerpc fault code * added data_blob_talloc_zero() for allocating an initially zero blob * added a endpoint enumeration hook in the dcerpc endpoint server operations (This used to be commit 3f85f9b782dc17417baf1ca557fcae22f5b6a83a)
2003-12-13 02:20:40 +00:00
/* useful macros for creating type checked pointers */
r2649: - used some cpp tricks to make users of talloc() and talloc_realloc() to get auto-naming of pointers very cheaply. - fixed a couple of memory leaks found with the new tricks A typical exit report for smbd is now: talloc report on 'null_context' (total 811 bytes in 54 blocks) auth/auth_sam.c:334 contains 20 bytes in 1 blocks struct auth_serversupplied_info contains 498 bytes in 33 blocks UNNAMED contains 8 bytes in 1 blocks lib/data_blob.c:40 contains 16 bytes in 1 blocks iconv(CP850,UTF8) contains 61 bytes in 4 blocks iconv(UTF8,CP850) contains 61 bytes in 4 blocks iconv(UTF8,UTF-16LE) contains 67 bytes in 4 blocks iconv(UTF-16LE,UTF8) contains 67 bytes in 4 blocks UNNAMED contains 13 bytes in 1 blocks which is much better than before (This used to be commit 6e721393d03afd3c2f8ced8422533547a9e33342)
2004-09-26 04:59:03 +00:00
#define talloc(ctx, size) talloc_named_const(ctx, size, __location__)
#define talloc_realloc(ptr, size) _talloc_realloc(ptr, size, __location__)
r2641: talloc_p() now produces a named talloc pointer, with the name auto-derived from the type you are allocating. This is done with basically zero overhead by relying on the stringify operator in cpp producing string constants. the result is that --leak-check nicely names all pointers that come from talloc_p() (This used to be commit bd86ebe2972af4d424df20db1e422919aa6203d0)
2004-09-26 01:41:04 +00:00
#define talloc_p(ctx, type) (type *)talloc_named_const(ctx, sizeof(type), #type)
r2649: - used some cpp tricks to make users of talloc() and talloc_realloc() to get auto-naming of pointers very cheaply. - fixed a couple of memory leaks found with the new tricks A typical exit report for smbd is now: talloc report on 'null_context' (total 811 bytes in 54 blocks) auth/auth_sam.c:334 contains 20 bytes in 1 blocks struct auth_serversupplied_info contains 498 bytes in 33 blocks UNNAMED contains 8 bytes in 1 blocks lib/data_blob.c:40 contains 16 bytes in 1 blocks iconv(CP850,UTF8) contains 61 bytes in 4 blocks iconv(UTF8,CP850) contains 61 bytes in 4 blocks iconv(UTF8,UTF-16LE) contains 67 bytes in 4 blocks iconv(UTF-16LE,UTF8) contains 67 bytes in 4 blocks UNNAMED contains 13 bytes in 1 blocks which is much better than before (This used to be commit 6e721393d03afd3c2f8ced8422533547a9e33342)
2004-09-26 04:59:03 +00:00
#define talloc_array_p(ctx, type, count) (type *)talloc_array(ctx, sizeof(type), count, __location__)
#define talloc_realloc_p(p, type, count) (type *)talloc_realloc_array(p, sizeof(type), count, __location__)
r2653: - data_blob() and data_blob_talloc() now get automatic names - talloc_strdup() and related functions get automatic names (This used to be commit 0cf427d14fe0a19cb3e85b6191be220f3d81080a)
2004-09-26 06:41:59 +00:00
#define talloc_memdup(t, p, size) _talloc_memdup(t, p, size, __location__)
r1983: a completely new implementation of talloc This version does the following: 1) talloc_free(), talloc_realloc() and talloc_steal() lose their (redundent) first arguments 2) you can use _any_ talloc pointer as a talloc context to allocate more memory. This allows you to create complex data structures where the top level structure is the logical parent of the next level down, and those are the parents of the level below that. Then destroy either the lot with a single talloc_free() or destroy any sub-part with a talloc_free() of that part 3) you can name any pointer. Use talloc_named() which is just like talloc() but takes the printf style name argument as well as the parent context and the size. The whole thing ends up being a very simple piece of code, although some of the pointer walking gets hairy. So far, I'm just using the new talloc() like the old one. The next step is to actually take advantage of the new interface properly. Expect some new commits soon that simplify some common coding styles in samba4 by using the new talloc(). (This used to be commit e35bb094c52e550b3105dd1638d8d90de71d854f)
2004-08-21 01:54:46 +00:00
#define talloc_destroy(ctx) talloc_free(ctx)
added a basic dcerpc endpoint mapper to Samba4. Currently only implements the epm_Lookup() call, I'll add the other important calls soon. I was rather pleased to find that epm_Lookup() worked first time, which is particularly surprising given its complexity. This required quite a bit of new infrastructure: * a generic way of handling dcerpc policy handles in the rpc server * added type checked varients of talloc. These are much less error prone. I'd like to move to using these for nearly all uses of talloc. * added more dcerpc fault handling code, and translation from NTSTATUS to a dcerpc fault code * added data_blob_talloc_zero() for allocating an initially zero blob * added a endpoint enumeration hook in the dcerpc endpoint server operations (This used to be commit 3f85f9b782dc17417baf1ca557fcae22f5b6a83a)
2003-12-13 02:20:40 +00:00
r152: a quick airport commit .... added ldbedit, a _really_ useful command added ldbadd, ldbdel, ldbsearch and ldbmodify to build solved lots of timezone issues, we now pass the torture tests with client and server in different zones fixed several build issues I know this breaks the no-LDAP build. Wait till I arrive in San Jose for that fix. (This used to be commit af34710d4da1841653624fe304b1c8d812c0fdd9)
2004-04-10 20:18:22 +00:00
#define malloc_p(type) (type *)malloc(sizeof(type))
#define malloc_array_p(type, count) (type *)realloc_array(NULL, sizeof(type), count)
#define realloc_p(p, type, count) (type *)realloc_array(p, sizeof(type), count)
r2653: - data_blob() and data_blob_talloc() now get automatic names - talloc_strdup() and related functions get automatic names (This used to be commit 0cf427d14fe0a19cb3e85b6191be220f3d81080a)
2004-09-26 06:41:59 +00:00
#define data_blob(ptr, size) data_blob_named(ptr, size, __location__)
r1983: a completely new implementation of talloc This version does the following: 1) talloc_free(), talloc_realloc() and talloc_steal() lose their (redundent) first arguments 2) you can use _any_ talloc pointer as a talloc context to allocate more memory. This allows you to create complex data structures where the top level structure is the logical parent of the next level down, and those are the parents of the level below that. Then destroy either the lot with a single talloc_free() or destroy any sub-part with a talloc_free() of that part 3) you can name any pointer. Use talloc_named() which is just like talloc() but takes the printf style name argument as well as the parent context and the size. The whole thing ends up being a very simple piece of code, although some of the pointer walking gets hairy. So far, I'm just using the new talloc() like the old one. The next step is to actually take advantage of the new interface properly. Expect some new commits soon that simplify some common coding styles in samba4 by using the new talloc(). (This used to be commit e35bb094c52e550b3105dd1638d8d90de71d854f)
2004-08-21 01:54:46 +00:00
#endif
first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
2003-08-13 01:53:07 +00:00
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