src


Log

Author Commit Date CI Message
Ramsay Jones 3cc60635 2010-03-05T19:06:28 Add some more (macro) file operation wrappers Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Ramsay Jones 54b9460f 2010-04-07T20:13:56 Fix the memory leak caused by failing to free the 'offset index' Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Ramsay Jones e272b103 2010-04-26T20:10:44 MSVC: Fix some compiler warnings In particular, using the normal (or production) compiler warning level (-W3), msvc complains as follows: .../sha1.c(244) : warning C4018: '<' : signed/unsigned mismatch .../sha1.c(270) : warning C4244: 'function' : conversion from \ 'unsigned __int64' to 'unsigned long', possible loss of data .../sha1.c(271) : warning C4244: 'function' : conversion from \ 'unsigned __int64' to 'unsigned long', possible loss of data Note that gcc issues a similar complaint about line 244 when compiling with -Wextra. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Ramsay Jones e2337f39 2010-04-25T21:55:41 MSVC: Fix a syntax error caused by an inline function definition Commit 5dddf7c (Add block-sha1 in favour of the mozilla routines 2010-04-14) introduced the "bswap.h" header file which contains an inline function (default_swab32()). The msvc compiler does not support the inline keyword which causes the build to fail with a syntax error. However, msvc does support inline functions using the __inline keyword language extension. We already have the GIT_INLINE() macro that allows us to hide this syntatic difference. In order to fix the build, we simply use GIT_INLINE() in the definition of the default_swab32() function. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Andreas Ericsson fb799dfe 2010-04-23T09:59:22 Merge remote branch 'ramsay/dev' * ramsay/dev: Add a pack index 'virtual function' to fetch an index entry Add a pack index 'virtual function' to search by file offset Change the interface of the pack index search function Add an 64-bit offset table index bounds check for v2 pack index Add a minimum size check when opening an v2 pack index file win32: Add separate MinGW and MSVC compatability header files Makefile: Add support for custom build options in config.mak file Fix some coding style issues
Andreas Ericsson 5dddf7c8 2010-04-14T20:41:57 Add block-sha1 in favour of the mozilla routines Since block-sha1 from git.git has such excellent performance, we can also get rid of the openssl dependency. It's rather simple to add it back later as an optional extra, but we really needn't bother to pull in the entire ssl library and have to deal with linking issues now that we have the portable and, performance-wise, truly excellent block-sha1 code to fall back on. Since this requires a slight revamp of the build rules anyway, we take the opportunity to fix including EXTRA_OBJS in the final build as well. The block-sha1 code was originally implemented for git.git by Linus Torvalds <torvalds@linux-foundation.org> and was later polished by Nicolas Pitre <nico@cam.org>. Signed-off-by: Andreas Ericsson <ae@op5.se>
Andreas Ericsson d15e94c0 2010-04-14T20:23:36 Add assembly sha1 implementation for ppc We don't use it yet, but now we have it there at least. All the non-trivial parts of it appears to have been written and contributed to git.git by some anonymous genius. The original implementation was done by Paul Mackerras <paulus@samba.org>. Signed-off-by: Andreas Ericsson <ae@op5.se>
Ramsay Jones 2cdc4544 2010-02-26T22:53:10 Add a pack index 'virtual function' to fetch an index entry Given an index entry number, the idx_get() function returns an (version agnostic) index_entry structure containing all of the information required to unpack the corresponding object from the '.pack' file. Since the v1 and v2 file formats differ in the layout of the object records, we provide two implementations of the get function and initialise the function pointer appropriately. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Ramsay Jones 608d33fa 2010-02-26T19:59:06 Add a pack index 'virtual function' to search by file offset In addition to searching the index by oid, we need to search by '.pack' file offset, particularly when processing OBJ_OFS_DELTA objects. Since the v1 and v2 file formats differ in the layout of the object records, we provide two implementations of the search function and initialise the (virtual) function pointer appropriately. Note that, as part of the creation of the 'offset index', we also add a check that the offset data in the index is within the bounds of the '.pack' file. Having sorted the file offsets, while creating the index, we only need to check the smallest and largest values. The offset index consists of the im_off_idx array, which contains the index entry numbers sorted into file offset order, and the im_off_next mapping array. The im_off_next array maps an index entry number to the 'next' index entry in file offset order. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Ramsay Jones abf5681c 2010-02-26T19:29:54 Change the interface of the pack index search function In particular, on a successful search, we now return the index entry number of the object rather than the '.pack' file offset. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Ramsay Jones 238e54bc 2010-02-21T15:34:53 Add an 64-bit offset table index bounds check for v2 pack index Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Ramsay Jones 255a0dab 2010-02-19T22:36:31 Add a minimum size check when opening an v2 pack index file Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Ramsay Jones e8cc449f 2010-02-19T21:49:22 win32: Add separate MinGW and MSVC compatability header files Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Ramsay Jones 1e5dd572 2010-02-12T16:50:33 Fix some coding style issues Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Ramsay Jones 73dcf287 2010-01-12T16:39:25 msvc: Fix some "unreferenced formal parameter" warnings Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Ramsay Jones e8a95256 2010-01-04T18:57:13 msvc: Fix some -W4 warnings Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Ramsay Jones 1a7bae4d 2010-01-11T22:51:42 Fix some "unused parameter" warnings with -Wextra Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Ramsay Jones e3fe32b6 2010-01-11T21:11:55 Fix "'__thread' not at start of declaration" warnings (-Wextra) Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Ramsay Jones 0ef9d2aa 2010-01-03T22:56:54 Fix some "signed v unsigned comparison" warnings with -Wextra Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Ramsay Jones a4f863af 2010-01-03T19:37:04 Fix an always false comparison "unsigned < 0" warning Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Ramsay Jones 803a6b4d 2010-01-03T19:12:05 Save the git_file in the gitfo_cache when enabling caching Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Ramsay Jones e97179b6 2010-01-13T20:01:11 win32: Add a 'git__' prefix to the directory reading routines This reduces the global namespace pollution and allows for a win32 compiler (eg. Open Watcom) to provide these routines in a header other than <dirent.h> (eg in <io.h>). Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Ramsay Jones 90d4d2f0 2010-01-11T19:27:50 win32: Use an 64-bit file offset type Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Ramsay Jones a1c0728d 2009-12-21T15:54:50 Add support for the MinGW platform Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Ramsay Jones cfe3a027 2010-01-15T22:07:44 Use a 64 bit off_t throughout the library and tests on POSIX Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Ramsay Jones 960ca1d7 2009-08-28T21:22:46 Add the git_oid_to_string() utility function Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Ramsay Jones 04e88240 2009-06-17T22:21:10 win32: Define the ssize_t type using SSIZE_T if supported Some win32 compilers define the SSIZE_T type, with the same meaning and intent as ssize_t. If available, make ssize_t a synonym of SSIZE_T. At present, the Digital-Mars compiler is known not to define SSIZE_T, so we provide an SSIZE_T macro to use in the typedef. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Ramsay Jones 5cae6c25 2009-06-17T15:54:59 Disable some msvc "deprecated function" warnings again In addition to removing the inline #define, commit 209849a also removed a #pragma to disable msvc deprecated function warnings. Without this #pragma, msvc currently issues 19 warnings related to "deprecated insecure c-library functions", such as strcpy() and 22 warnings related to "deprecated POSIX function names", such as open(). In order to supress these warnings, re-instate the #pragma. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Julio Espinoza-Sokal 209849a4 2009-06-15T21:27:49 Use GIT_INLINE macro instead of keyword inline. No need to define inline as __inline because libgit2 code should be using GIT_INLINE instead. Signed-off-by: Julio Espinoza-Sokal <julioes@gmail.com> Signed-off-by: Andreas Ericsson <ae@op5.se>
Ramsay Jones c79dded3 2009-06-14T22:13:35 win32: Add an fsync() implementation for windows For information on FlushFileBuffers(), see the msdn document at msdn.microsoft.com/en-us/library/aa364439(VS.85).aspx Note that Windows 2000 is shown as the minimum windows version to support FlushFileBuffers(), so if we wish to support Win9X and NT4, we will need to add code to dynamically check if kernel32.dll contains the function. The only error return mentioned in the msdn document is ERROR_INVALID_HANDLE, which is returned if the file/device (eg console) is not buffered. The fsync(2) manpage says that EINVAL is returned in errno, if "fd is bound to a special file which does not support synchronization". Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Ramsay Jones 8a086f87 2009-06-14T22:12:20 win32: Add support for the MS Visual C/C++ compiler Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Ramsay Jones 2bf93fa1 2009-06-14T22:10:23 Correct the spelling of the FLEX_ARRAY macro When setting the default value, the macro name was specified as GIT_FLEX_ARRAY, which is inconsistent with it's earlier usage in the file. This caused a compilation error, using the MS Visual C/C++ compiler, when compiling the git_packlist struct definition in src/odb.c. In addition to changing the spelling of the FLEX_ARRAY macro to GIT_FLEX_ARRAY, including it's use in src/odb.c, we also rename the TYPEOF macro to GIT_TYPEOF. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Ramsay Jones 10aa3fa7 2009-06-04T17:14:35 Fix some "signed/unsigned mismatch" (msvc) compiler warnings Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Andreas Ericsson <ae@op5.se>
Ramsay Jones 4c9a3973 2009-06-04T17:13:49 Improve the portability of the gitfo_cache code (to 64-bit systems) This supresses some "conversion from 'size_t' to 'unsigned int', possible loss of data" warning messages from the MS Visual C/C++ compiler with -Wp64. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Andreas Ericsson <ae@op5.se>
Ramsay Jones 3e0fb8fb 2009-06-04T17:12:59 thread-utils.h: Avoid using a non-standard C construct In particular, in standard C, a struct or union must have at least one member declared (ie. structs and unions cannot be empty). Some compilers allow empty structs as an extension and won't even issue a warning unless asked for it (eg, gcc requires -pedantic). Some compilers allow empty structs as an extension and will only treat it as an error if asked for strict checking (eg Digital-Mars with -A). Some compilers simply treat it as an error (eg MS Visual C/C++). Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Andreas Ericsson <ae@op5.se>
Ramsay Jones e17a3f56 2009-06-04T16:47:59 Implement git_odb_write() Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Andreas Ericsson <ae@op5.se>
Ramsay Jones ca481fc4 2009-06-04T16:46:54 Add the git_move_file() function Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Andreas Ericsson <ae@op5.se>
Ramsay Jones 4319860c 2009-06-04T16:45:59 win32: Add some file operation stubs and wrapper functions Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Andreas Ericsson <ae@op5.se>
Ramsay Jones 4d503f88 2009-06-04T16:48:53 gitfo_exists: replace call to stat() with access() Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Andreas Ericsson <ae@op5.se>
Ramsay Jones ac04bdf6 2009-06-04T16:44:54 Fix a usage error in a call to the object_file_name() function In 82324ac, the new static function exists_loose() called object_file_name() and, in order to detect an error return, tested for a negative value. This usage is incorrect, as the error return is indicated by a positive return value. (A successful call is indicated by a zero return value) The only error return from object_file_name() relates to insufficient buffer space and the return value gives the required minimum buffer size (which will always be >0). If the caller requires a dynamically allocated buffer, this allows something like the following call sequence: size_t len = object_file_name(NULL, 0, db->object_dir, id); char *buf = git__malloc(len); if (!buf) error(...); object_file_name(buf, len, db->object_dir,id); ... No current callers take advantage of this capability. Fix up the call site and change the return type of the function, from int to size_t, which more accurately reflects the implementation. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Andreas Ericsson <ae@op5.se>
Ramsay Jones 498bc090 2009-03-23T18:47:18 t0020-dirent.c: allow test to be run standalone This test assumed that it was invoked in an empty directory, which is true when run from the Makefile, and so would fail if run standalone. In order to allow the test to work when run from any directory, create a sub directory "dir-walk" and chdir() into this directory while running the tests. Also, add some additional tests. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones 502acd16 2009-03-23T18:37:51 win32: Add missing include for mkdir() and rmdir() Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones 0234c186 2009-03-20T19:52:50 win32: Add <dirent.h> directory reading routines Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones 79ca2edc 2009-03-20T19:51:48 win32: Add routines to abstract memory-mapped file functions In particular, the git__mmap() and git__munmap() routines provide the interface to platform specific memory-mapped file facilities. We provide implementations for unix and win32, which can be found in their own sub-directories. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones 7a6cf815 2009-03-16T17:08:45 win32: Open or create files in binary mode On windows, unless we use the O_BINARY flag in the open() call, the file I/O routines will perform line ending conversion (\r\n => \n on input, \n => \r\n on output). In addition to the performance penalty, most files in the object database are binary and will, therefore, become corrupted by this conversion. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones 840fb8b7 2009-02-18T18:53:48 win32: fixup some headers to improve win32 compilation Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones a9984a4e 2009-02-18T18:52:13 Fix some (digital-mars) compiler warnings In particular, conditional expressions which contain an assignment statement, where the expression type is not explicitly made to be boolean, elicits the following message: warning 2: possible unintended assignment Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones fc3c3a20 2009-02-18T18:50:36 Avoid using a gcc compiler language extension In particular, using pointer arithmetic on void pointers, despite being quite useful, is not legal in standard C. Avoiding non-standard C constructs will help in porting the library to other compilers/platforms. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones 1906f236 2009-02-26T20:37:20 Add built-in (Mozilla) SHA1 routines Paul agreed to the GCC-exception license by email: | | From: Paul Kocher <paul@cryptography.com> | Date: Sun, 15 Mar 2009 11:37:23 -0700 | Subject: Re: Adding Mozilla SHA1 implementation to libgit2 | | Yes - that's fine. | | At 01:56 AM 3/5/2009, Andreas Ericsson wrote: | > Hi Paul. We spoke earlier about this, if you remember? | > We'd like to add the GCC-exception to the GPL license | > for these files. Signed-off-by: Paul Kocher <paul@cryptography.com> Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones 82324ac1 2009-02-10T21:49:48 Add the git_odb_exists() object query function This function determines if the given object can be found in the object database. At present, only the local object database is searched. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones e9f5e877 2009-02-03T18:25:13 Rearrange some code to improve clarity In particular, the test for z-stream input completion (zs.avail_in != 0) logically belongs with the test for the Z_STREAM_END stream status. This is also consistent with the identical check in finish_inflate(). Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones 236e7579 2009-02-03T18:23:50 Check for error returns from inflateInit() At present, it is sufficient to ensure that an error return from inflateInit() is not ignored. Most error returns, like Z_VERSION_ERROR and Z_STREAM_ERROR, indicate programming or build errors. These errors could, perhaps, be handled with simple asserts. However, for a Z_MEM_ERROR, we may want to perform some further error handling in the future. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones c94eb4aa 2009-02-03T18:22:09 Fix a potential memory leak In particular, neglecting to call inflateEnd() along various codepaths in the inflate_tail() routine, would result in the failure to release zlib internal state. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones cfe96f31 2009-01-12T19:44:51 Add some (macro) file operation wrappers Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones ced645ea 2009-01-12T19:42:13 Add git__dirname and git__basename utility routines These routines are intended to extract the directory and base name from a path string. Note that these routines do not interact with any filesystem and work only on the text of the path. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones 66a4bfac 2009-01-12T19:38:37 Fix a sparse "symbol not declared" warning In particular, the git__delta_apply() function has not been declared prior to it's definition. In order to suppress the warning, include the delta-apply.h header which provides the public interface. This ensures that the declaration and definition are consistent. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce c23841c8 2009-01-03T04:21:30 Add the binary delta apply algorithm for pack style deltas The git__delta_apply() function can be used to apply a Git style delta, such as those used in pack files or in git patch files, to recover the original object stream. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce bed3229b 2009-01-03T03:34:09 Precompute the fanout decoding and the oid offset in a pack-*.idx The fanout table is fairly commonly accessed, we need to read it twice for each object we lookup in any given pack file. Most of the processors running Git are running in little-endian mode, as they are variants of the x86 platform, so reading the fanout is a costly operation as we need to convert from network byte order to local byte order. By decoding the fanout table into a malloc obtained buffer we can save these 2 decode operations per lookup and make search go more quickly. This also cleans up the initialization of the search functions by cutting out a few instructions, saving a small amount of time. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce a7c60cfc 2009-01-03T02:41:26 Add basic support to read pack-*.idx v1 and v2 files The index data is mapped into memory and then scanned using a binary search algorithm to locate the matching entry for the supplied git_oid. The standard fanout hash trick is applied to reduce the search space by 8 iterations. Since the v1 and v2 file formats differ in their search function, due to the different layouts used for the object records, we use two different search implementations and a virtual function pointer to jump to the correct version of code for the current pack index. The single function jump per-pack should be faster then computing a branch point inside the inner loop of a common binary search. To improve concurrency during read operations the pack lock is only held while verifying the index is actually open, or while opening the index for the first time. This permits multiple concurrent readers to scan through the same index. If an invalid index file is opened we close it and mark the git_pack's invalid bit to true. The git_pack structure is kept around in its parent git_packlist, but the invalid bit will cause all future readers to skip over the pack entirely. Pruning the invalid entries is relatively unimportant because they shouldn't be very common, a $GIT_DIRECTORY/objects/pack directory tends to only have valid pack files. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce 20e7f426 2009-01-03T00:36:10 Add a simple mmap wrapper for cross-platform mmap usage Win32 has a variant of mmap that is harder to use than POSIX, but to run natively and efficiently on Win32 we need some form of it. gitfo_map_ro() provides a basic mmap function for use in locations where we need read-only random data access to large ranges of a file, such as a pack-*.idx. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce 098ac57a 2009-01-03T00:02:25 Refactor pack memory management and locking to be safer Using an atomic reference counter is difficult to make cross-platform, as the reference count implementations are generally processor specific. Its also hard to do a proper multi-read/single-write implementation. We now use a simple mutex around the reference count for the list of packs. Readers grab the mutex and either build the list, or increment the existing one's reference count. When the reader is done with the list, the reference count is decremented. In this way parallel readers are able to operate on the list without worrying about it being deallocated out from under them. Individual pack structures are held by reference counts, but we only care about the list the pack structure is held in. There is no need to increment/decrement the pack reference counts as we scan through them during a read operation, the caller holds the git_packlist and that is sufficient to hold the packs it references. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones 3a33c7b3 2009-01-02T20:51:47 Fix snprintf compiler warning on cygwin As far as gcc is concerned, the "z size specifier" is available as an extension to the language, which is available with or without any -std= switch. (I think you have to go back to 2.95 for a version of gcc which doesn't work.) Many other compilers have this as an extension as well (ie without the equivalent of -std=c99). Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce 51eb2f90 2009-01-02T21:48:40 Change the use of asm/atomic.h to require -DGIT_HAS_ASM_ATOMIC These headers aren't always available; they typically come from the Linux kernel, but aren't supposed to be exported into the userspace /usr/include. Modern kernels won't install these and some distros rm -rf the directory post kernel header install. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce 11bb049b 2009-01-02T21:41:52 Fix pthread_mutex based gitrc_dec The function should return true only when the counter drops to 0. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce b438016e 2008-12-31T16:20:05 Find pack files in $GIT_DIR/objects/pack directory on git_odb_open Currently we only catalog the available pack files into a table, storing their path names relative to the pack directory. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce 7350e633 2008-12-31T16:07:38 Define gitfo_exists to determine file presence When scanning the pack directory we need to see if the path name is present for ".idx" when we discover a ".pack" file. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce 2c4b7707 2008-12-31T16:06:48 Add git__fmt as an easier to use snprintf Checking the return value of snprintf is a pain, as it must be >= 0 and < sizeof(buffer). git__fmt is a simple wrapper to perform these checks. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce 5690f02e 2008-12-31T15:35:36 Rewrite git_foreach_dirent into gitfo_dirent Our fileops API is currently private. We aren't planning on supplying a cross-platform file API to applications that link to us. If we did, we'd probably whole-sale publish fileops, not just the dirent code. By moving it to be private we can also change the call signature to permit the buffer to be passed down through the call chain. This is very helpful when we are doing a recursive scan as we can reuse just one buffer in all stack frames, reducing the impact the recursion has on the stack frames in the data cache. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce 9eb79764 2008-12-31T14:35:39 Add string utility functions for prefix and suffix compares Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce 5614dc18 2008-12-31T13:27:51 Add basic locking to the git_odb structure We grab the lock while accessing the alternates list, ensuring that we only initialize it once for the given git_odb. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce 028ef0de 2008-12-31T13:20:21 Add a mutex and atomic counter abstraction and implementations These abstractions can be used to implement an efficient resource reference counter and simple mutual exclusion. On pthreads we use pthread_mutex_t, except when we are also on glibc and can directly use its asm/atomic.h definitions. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce d44cfd46 2008-12-31T13:16:31 Cleanup our header inclusion order to ensure pthread.h is early If we are using threads we need to make sure pthread.h comes in before just about anything else. Some platforms enable macros that alter what other headers define. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce 5673434f 2008-12-31T07:34:43 Undefine malloc,strdup,calloc before redefining them Some systems may use cpp macros to define these functions, glibc appears to be one of them. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce 7dd8a9f7 2008-12-30T23:26:38 Set GIT_EOSERR when the OS errno should be consulted This error code indicates the OS error code has a better value describing the last error, as it is likely a network or local file IO problem identified by a C library function call. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce 64a47c01 2008-12-30T23:21:36 Wrap malloc and friends and report out of memory as GIT_ENOMEM We now forbid direct use of malloc, strdup or calloc within the library and instead use wrapper functions git__malloc, etc. to invoke the underlying library malloc and set git_errno to a no memory error code if the allocation fails. In the future once we have pack objects in memory we are likely to enhance these routines with garbage collection logic to purge cached pack data when allocations fail. Because the size of the function will grow somewhat large, we don't want to mark them for inline as gcc tends to aggressively inline, creating larger than expected executables. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce ffb55c53 2008-12-30T22:29:04 Rename the path of the objects directory to be more specific We're likely to add additional path data, like the path of the refs or the path to the config file into the git_odb structure, as it may grow into the repository wrapper. Changing the name of the objects directory reference makes it more clear should we later add something else. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce 4c67e2e9 2008-12-30T22:25:30 Change git_odb__read_packed to return ENOTFOUND until implemented We didn't search for the object, so we cannot possibly promise it to the caller of git_odb_read(). Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce 064301cc 2008-12-30T22:07:56 Fix size_t snprintf warning by using PRIuPTR format macro This is the correct C99 format code for the size_t type when passed as an argument to the *printf family. If the platform doesn't define it, we assume %lu and just cross our fingers that its the proper setting for a size_t on this system. On most sane platforms, "unsigned long" is the underlying type of "size_t". Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce a1d34bc0 2008-12-30T21:49:38 Support building on Mac OS X by using pthread_getspecific for TLS The Mach-O format does not permit gcc to implement the __thread TLS specification, so we must instead emulate it using a single int cell allocated from memory and stored inside of the thread specific data associated with the current pthread. What makes this tricky is git_errno must be a valid lvalue, so we really need to return a pointer to the caller and deference it as part of the git_errno macro. The GCC-specific __attribute__((constructor)) extension is used to ensure the pthread_key_t is allocated before any Git functions are executed in the library, as this is necessary to access our thread specific storage. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Julio Espinoza-Sokal 213e720c 2008-12-20T20:47:41 Change usages of static inline to GIT_INLINE Signed-off-by: Julio Espinoza-Sokal <julioes@gmail.com> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce d7467949 2008-12-30T21:50:10 Remove unnecessary import of stdlib.h from revwalk.h OS headers are best imported from a more central location anyway. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce b3039bee 2008-12-30T21:25:13 Cleanup formatting in our head files to be more consistent Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones c960d6a3 2008-12-27T18:59:43 Add a routine to determine a git_oid given an git_obj Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones 007e0753 2008-12-27T18:58:25 Add some routines for SHA1 hash computation [sp: Changed signature for output to use git_oid, and added a test case to verify an allocated git_hash_ctx can be reinitialized and reused.] Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones 42fd40db 2008-12-27T18:56:16 Fix a bug in gitfo_read_file() In particular, when asked to read an empty file, this function calls malloc() with a zero size allocation request. Standard C says that the behaviour of malloc() in this case is implementation defined. [C99, 7.20.3 says "... If the size of the space requested is zero, the behavior is implementation-defined: either a null pointer is returned, or the behavior is as if the size were some nonzero value, except that the returned pointer shall not be used to access an object."] Finesse the issue by over-allocating by one byte. Setting the extra byte to '\0' may also provide a useful sentinel for text files. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones 3d3552e8 2008-12-18T22:58:10 Implement git_odb__read_loose() Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones 75d58430 2008-12-18T22:56:14 Add a file reading routine along with an io buffer type In particular, the gitfo_read_file() routine can be used to slurp the complete file contents into an gitfo_buf structure. The buffer content will be allocated by malloc() and may be released by the gitfo_free_buf() routine. The io buffer type can be initialised on the stack with the GITFO_BUF_INIT macro. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones 7b6e8067 2008-12-10T18:31:28 Add some git_otype string conversion and testing routines Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones b3be0fc7 2008-12-03T23:54:47 Fix an "implicit function definition" warning on cygwin In particular, the warning relates to malloc(), which is declared in <stdlib.h>. This header is now included, indirectly, via the "common.h" header. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones 5ee2fe77 2008-12-03T23:53:55 Add a GIT_PATH_MAX constant The PATH_MAX symbol is often, but not always, defined in the <limits.h> header. In particular, on cygwin you need to include this header to avoid a compilation error. However, some systems define PATH_MAX to be something as small as 256, which POSIX is happy to allow, while others allow much larger values. In general it can vary from one filesystem to another. In order to avoid the vagaries of different systems, define our own symbol. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones 192678b5 2008-12-03T23:52:57 Fix some doxygen warnings and errors Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Shawn O. Pearce af795e49 2008-12-02T09:56:23 Add routines to convert git_oid to hex strings [sp: Credit for some of this implementation goes to Pieter, I started off a patch he proposed for libgit2 but reworked enough of it that I don't want to blame him for any bugs.] Suggested-by: Pieter de Bie <pdebie@ai.rug.nl> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones b72ca267 2008-11-29T19:21:24 Diasble TLS on cygwin Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Acked-by: Andreas Ericsson <ae@op5.se> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones 17643760 2008-11-29T19:20:07 Use __CHECKER__ to detect when sparse is running Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Acked-by: Andreas Ericsson <ae@op5.se> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Ramsay Jones 43288a07 2008-11-29T19:18:43 Fixup documentation to reflect the "git_obj" rename commit dff79e27d3d2cdc09790ded80fe2ea8ff5d61034 renamed the (small object) "git_sobj" to a plain "git_obj", but neglected to update some of the documentation to reflect that change. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Andreas Ericsson ea790f33 2008-11-29T15:34:20 Add a dirent walker to the fileops API Since at least MS have something like GetFirstDirEnt() and GetNextDirEnt() (presumably with superior performance), we can let MS hackers add support for a dirent walker using that API instead, while we stick with the posix-style readdir() calls. Signed-off-by: Andreas Ericsson <ae@op5.se> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Andreas Ericsson 4188d28f 2008-11-29T15:28:12 Add an io caching layer to the gitfo api The idea is taken from Junio's work in read-cache.c, where it's used for writing out the index without tap-dancing on the poor harddrive. Since it's almost certainly useful for cached writing of packfiles too, we turn it into a generic API, making it perfectly simple to reuse it later. gitfo_write_cached() has the same contract as gitfo_write(), it returns GIT_SUCCESS if all bytes are successfully written (or were at least buffered for later writing), and <0 if an error occurs during buffer writing. Signed-off-by: Andreas Ericsson <ae@op5.se> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Andreas Ericsson ec250c6e 2008-11-23T22:37:55 Remove config.h and make fileops an internal API Since it doesn't make sense to make the disk access stuff portable *AND* public (that's a job for each application imo), we can take a shortcut and just support unixy stuff for now and get away with coding most of it as macros. Since we go with an internal API for starters and only provide higher-level API's to the libgit users, we'll be ok with this approach. Signed-off-by: Andreas Ericsson <ae@op5.se> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Andreas Ericsson c6ebb4a9 2008-11-22T15:17:17 Remove license top-comment from public header files Since it's being added when we install the headers anyway, we might as well get rid of it. If anything, we should point coders to the COPYING file in the project's root directory instead of duplicating the same (large-ish) text everywhere. Signed-off-by: Andreas Ericsson <ae@op5.se> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Andreas Ericsson 76a8c447 2008-11-22T14:42:12 Add internal common.h file This one pulls in compiler compatibility macros, some common header files, and also the public common.h header. C source files are modified to use the private common.h in favour of the public one. Signed-off-by: Andreas Ericsson <ae@op5.se> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>