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path: root/source4/lib/talloc.c
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2007-10-10r2640: valgrind does a great job on some types of memory leaks, but is slowAndrew Tridgell1-1/+71
and can't properly handle leaks of doubly linked lists which we use a lot (as the memory is always reachable). Even with --show-reachable its hard to track leaks down sometimes. I realised that talloc does have the necessary information to track these, and by using the cascading property of the new talloc it can report on leaks in a much more succinct fashion than valgrind can. I have added a new samba option --leak-check that applies to all Samba tools. When enabled it prints a leak report summarising all top level contexts that are present when the program exits. A typical report looks like this: talloc report on 'null_context' (total 1071 bytes in 52 blocks) iconv(CP850,UTF8) contains 43 bytes in 3 blocks UNNAMED contains 24 bytes in 1 blocks UNNAMED contains 24 bytes in 1 blocks dcesrv_init contains 604 bytes in 26 blocks server_service contains 120 bytes in 6 blocks UNNAMED contains 24 bytes in 1 blocks UNNAMED contains 24 bytes in 1 blocks server_service contains 104 bytes in 4 blocks server_context contains 12 bytes in 2 blocks iconv(UTF8,UTF-16LE) contains 46 bytes in 3 blocks iconv(UTF-16LE,UTF8) contains 46 bytes in 3 blocks the numbers are recursive summaries for all the memory hanging off each context. this option is not thread safe when used, but the code is thread safe if the option is not given, so I don't think thats a problem. (This used to be commit 96d33d36a5639e7fc46b14a470ccac674d87c62a)
2007-10-10r2506: Add more printf attributes for format checking.Andrew Bartlett1-3/+5
Andrew Bartlett (This used to be commit 1640272dc36a0cb5bc8e647d06c7cee46022f077)
2007-10-10r2308: make talloc_vasprintf() available outside talloc.cAndrew Tridgell1-2/+1
(This used to be commit a3a15f9d1a3b51cb7099b5f3adb8401dfc37793d)
2007-10-10r2055: Add PRINTF_ATTRIBUTE to many more parts of the code, and a newAndrew Bartlett1-2/+7
--enable-developer warning for when they are missing. Andrew Bartlett (This used to be commit 8115e44d47bcd65edba08d10117180ae508cdbc1)
2007-10-10r2049: talloc now has destructors and reference countsAndrew Tridgell1-56/+75
this means you can do: talloc_set_destructor(ptr, my_destructor); and your destructor will be called with the pointer as an argument when the pointer is about to be freed. The destructor can refuse the free by returning -1. You can also increase the reference count on a pointer like this: talloc_increase_ref_count(ptr); and a talloc_free() will just reduce the reference count, only actually freeing the memory when the count reaches zero. (This used to be commit b5608d52d33a1d8be5a8a6751bc6cec162c7ed92)
2007-10-10r1991: After finding a talloc inconsistancy is a very good time to smb_panic(),Andrew Bartlett1-2/+12
it can only indicate programmer error, and doing a smb_panic() ensures an automatic backtrace (and eventually an abort()). Andrew Bartlett (This used to be commit b2d93d0010d80f158760f53273853de2439c3062)
2007-10-10r1985: take advantage of the new talloc in a few more placesAndrew Tridgell1-5/+34
(This used to be commit 6ffdfd779936ce8c5ca49c5f444e8da2bbeee0a8)
2007-10-10r1983: a completely new implementation of tallocAndrew Tridgell1-358/+199
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)
2007-10-10r1898: Check the context we are going to return.Simo Sorce1-1/+5
(This used to be commit d721b122b5c443363b8f8ec2e1ef4b798378b658)
2007-10-10r1892: this adds talloc_get_context(), which is something I discussed at theAndrew Tridgell1-1/+13
team meeting at CIFS04. It allows you to find the talloc context given any pointer allocated with talloc. (This used to be commit 01dc4ed9b4f9390930d3c235cf2ccf9a9028392d)
2007-10-10r1474: It is useful if talloc_strdup() behaves like strdup()Andrew Bartlett1-0/+3
- NULL in, NULL out Andrew Bartlett (This used to be commit 2cc0b3a2f1785c53268f018999a87c26539fd4a6)
2007-10-10r1199: Make talloc_asprintf_append() work on a NULL source string as if it wereAndrew Bartlett1-1/+5
just a alloc_asprintf(). (makes it easier to use in a loop) Andrew Bartlett (This used to be commit 5816d09c47252d2ee8732722b3cc44ea865b8fcc)
2007-10-10r1017: - move to a centralised way of handling talloc/ldb interactionAndrew Tridgell1-0/+9
(This used to be commit 363cb3377a0eca5bfef71a02dcdc21c5fadbaf32)
2007-10-10r962: convert 'unsigned' and 'unsigned int' to uint_tStefan Metzmacher1-6/+6
metze (This used to be commit 57151e80eb1090281401930c8fe25b20a8cf3a38)
2007-10-10r507: the new ldb code will use talloc_free() a lot, so I have madeAndrew Tridgell1-137/+151
talloc_free() O(1) in preparation. This also halves the number of malloc() calls and increases our internal consistency checking, without breaking valgrind testing. (This used to be commit 2331d4e76e40ff08215853f747f7063213ac92ce)
2003-12-14fixed some memory leaks in the rpc server codeAndrew Tridgell1-0/+5
(This used to be commit 20458556017f426ab57ca9a9d098cacecefbdcff)
2003-12-13added a basic dcerpc endpoint mapper to Samba4. Currently onlyAndrew Tridgell1-3/+54
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)
2003-08-13first public release of samba4 codeAndrew Tridgell1-0/+515
(This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)