|
d68f2b1a
|
2019-12-06T18:22:58
|
|
buf: add consume_bytes
Allow users to consume a buffer by the number of bytes, not just to an
ending pointer.
|
|
174b7a32
|
2019-09-19T12:24:06
|
|
buffer: fix printing into out-of-memory buffer
Before printing into a `git_buf` structure, we always call `ENSURE_SIZE`
first. This macro will reallocate the buffer as-needed depending on
whether the current amount of allocated bytes is sufficient or not. If
`asize` is big enough, then it will just do nothing, otherwise it will
call out to `git_buf_try_grow`. But in fact, it is insufficient to only
check `asize`.
When we fail to allocate any more bytes e.g. via `git_buf_try_grow`,
then we set the buffer's pointer to `git_buf__oom`. Note that we touch
neither `asize` nor `size`. So if we just check `asize > targetsize`,
then we will happily let the caller of `ENSURE_SIZE` proceed with an
out-of-memory buffer. As a result, we will print all bytes into the
out-of-memory buffer instead, resulting in an out-of-bounds write.
Fix the issue by having `ENSURE_SIZE` verify that the buffer is not
marked as OOM. Add a test to verify that we're not writing into the OOM
buffer.
|
|
|
208f1d7a
|
2019-09-19T12:46:37
|
|
buffer: fix infinite loop when growing buffers
When growing buffers, we repeatedly multiply the currently allocated
number of bytes by 1.5 until it exceeds the requested number of bytes.
This has two major problems:
1. If the current number of bytes is tiny and one wishes to resize
to a comparatively huge number of bytes, then we may need to loop
thousands of times.
2. If resizing to a value close to `SIZE_MAX` (which would fail
anyway), then we probably hit an infinite loop as multiplying the
current amount of bytes will repeatedly result in integer
overflows.
When reallocating buffers, one typically chooses values close to 1.5 to
enable re-use of resulting memory holes in later reallocations. But
because of this, it really only makes sense to use a factor of 1.5
_once_, but not looping until we finally are able to fit it. Thus, we
can completely avoid the loop and just opt for the much simpler
algorithm of multiplying with 1.5 once and, if the result doesn't fit,
just use the target size. This avoids both problems of looping
extensively and hitting overflows.
This commit also adds a test that would've previously resulted in an
infinite loop.
|
|
|
3e8a17b0
|
2019-09-21T15:18:42
|
|
buffer: fix memory leak if unable to grow buffer
If growing a buffer fails, we set its pointer to the static
`git_buf__oom` structure. While we correctly free the old pointer if
`git__malloc` returned an error, we do not free it if there was an
integer overflow while calculating the new allocation size. Fix this
issue by freeing the pointer to plug the memory leak.
|
|
|
e5e2fac8
|
2019-01-21T00:57:39
|
|
buffer: explicitly cast
Quiet down a warning from MSVC about how we're potentially losing data.
This is safe since we've explicitly tested it.
|
|
|
f673e232
|
2018-12-27T13:47:34
|
|
git_error: use new names in internal APIs and usage
Move to the `git_error` name in the internal API for error-related
functions.
|
|
|
ecf4f33a
|
2018-02-08T11:14:48
|
|
Convert usage of `git_buf_free` to new `git_buf_dispose`
|
|
|
56ffdfc6
|
2018-02-08T11:14:30
|
|
buffer: deprecate `git_buf_free` in favor of `git_buf_dispose`
|
|
|
8070a357
|
2018-03-03T18:47:35
|
|
Introduce `git_buf_decode_percent`
Introduce a function to take a percent-encoded string (URI encoded,
described by RFC 1738) and decode it into a `git_buf`.
|
|
|
4796c916
|
2017-06-07T09:56:31
|
|
buffer: return errors for `git_buf_init` and `git_buf_attach`
Both the `git_buf_init` and `git_buf_attach` functions may call
`git_buf_grow` in case they were given an allocation length as
parameter. As such, it is possible for these functions to fail when we
run out of memory. While it won't probably be used anytime soon, it does
indeed make sense to also record this fact by returning an error code
from both functions. As they belong to the internal API only, this
change does not break our interface.
|
|
|
9a8386a2
|
2017-06-07T09:50:54
|
|
buffer: consistently use `ENSURE_SIZE` to grow buffers on-demand
The `ENSURE_SIZE` macro can be used to grow a buffer if its currently
allocated size does not suffice a required target size. While most of
the code already uses this macro, the `git_buf_join` and `git_buf_join3`
functions do not yet use it. Due to the macro first checking whether we
have to grow the buffer at all, this has the benefit of saving a
function call when it is not needed. While this is nice to have, it will
probably not matter at all performance-wise -- instead, this only serves
for consistency across the code.
|
|
|
e82dd813
|
2017-06-08T11:52:32
|
|
buffer: fix `ENSURE_SIZE` macro referencing wrong variable
While the `ENSURE_SIZE` macro gets a reference to both the buffer that
is to be resized and a new size, we were not consistently referencing
the passed buffer, but instead a variable `buf`, which is not passed in.
Funnily enough, we never noticed because our buffers seem to always be
named `buf` whenever the macro was being used.
Fix the macro by always using the passed-in buffer. While at it, add
braces around all mentions of passed-in variables as should be done with
macros to avoid subtle errors.
Found-by: Edward Thompson
|
|
909d5494
|
2016-12-29T12:25:15
|
|
giterr_set: consistent error messages
Error messages should be sentence fragments, and therefore:
1. Should not begin with a capital letter,
2. Should not conclude with punctuation, and
3. Should not end a sentence and begin a new one
|
|
8cb27223
|
2015-09-25T10:48:19
|
|
git_buf_quote/unquote: handle > \177
Parse values up to and including `\377` (`0xff`) when unquoting.
Print octal values as an unsigned char when quoting, lest `printf`
think we're talking about negatives.
|
|
|
d3d95d5a
|
2015-09-23T16:30:48
|
|
git_buf_quote: quote ugly characters
|
|
|
5b78dbdb
|
2015-07-09T13:04:10
|
|
git_buf: decode base85 inputs
|
|
|
d34f6826
|
2014-04-08T17:18:47
|
|
Patch parsing from patch files
|
|
a6599235
|
2015-06-24T19:32:56
|
|
buffer: make use of EINVALID for growing a borrowed buffer
This explains more closely what happens. While here, set an error
message.
|
|
|
caab22c0
|
2015-06-23T15:41:58
|
|
buffer: don't allow growing borrowed buffers
When we don't own a buffer (asize=0) we currently allow the usage of
grow to copy the memory into a buffer we do own. This muddles the
meaning of grow, and lets us be a bit cavalier with ownership semantics.
Don't allow this any more. Usage of grow should be restricted to buffers
which we know own their own memory. If unsure, we must not attempt to
modify it.
|
|
|
d4cf1675
|
2015-02-19T10:05:33
|
|
buffer: introduce git_buf_attach_notowned
Provide a convenience function that creates a buffer that can be provided
to callers but will not be freed via `git_buf_free`, so the buffer
creator maintains the allocation lifecycle of the buffer's contents.
|
|
|
f1453c59
|
2015-02-12T12:19:37
|
|
Make our overflow check look more like gcc/clang's
Make our overflow checking look more like gcc and clang's, so that
we can substitute it out with the compiler instrinsics on platforms
that support it. This means dropping the ability to pass `NULL` as
an out parameter.
As a result, the macros also get updated to reflect this as well.
|
|
|
2884cc42
|
2015-02-11T09:39:38
|
|
overflow checking: don't make callers set oom
Have the ALLOC_OVERFLOW testing macros also simply set_oom in the
case where a computation would overflow, so that callers don't
need to.
|
|
|
4aa664ae
|
2015-02-10T23:55:07
|
|
git_buf_grow_by: increase buf asize incrementally
Introduce `git_buf_grow_by` to incrementally increase the size of a
`git_buf`, performing an overflow calculation on the growth.
|
|
|
392702ee
|
2015-02-09T23:41:13
|
|
allocations: test for overflow of requested size
Introduce some helper macros to test integer overflow from arithmetic
and set error message appropriately.
|
|
4b1018d2
|
2015-01-08T17:24:12
|
|
Fix crash in free() when git_buf_grow() fails.
|
|
92e0b679
|
2014-11-21T13:31:30
|
|
buffer: Do not `put` anything if len is 0
|
|
|
e003f83a
|
2014-07-31T15:14:56
|
|
Introduce git_buf_decode_base64
Decode base64-encoded text into a git_buf
|
|
b3af2d80
|
2014-07-16T13:34:25
|
|
Just put it all in buffer.
|
|
1e4976cb
|
2014-05-08T10:17:14
|
|
Be more careful with user-supplied buffers
This adds in missing calls to `git_buf_sanitize` and fixes a
number of places where `git_buf` APIs could inadvertently write
NUL terminator bytes into invalid buffers. This also changes the
behavior of `git_buf_sanitize` to NUL terminate a buffer if it can
and of `git_buf_shorten` to do nothing if it can.
Adds tests of filtering code with zeroed (i.e. unsanitized) buffer
which was previously triggering a segfault.
|
|
|
e349ed50
|
2014-04-22T14:58:33
|
|
patch: emit binary patches (optionally)
|
|
b3b36a68
|
2014-04-10T12:43:16
|
|
Introduce git_buf_putcn
Allows for inserting the same character n amount of times
|
|
|
18234b14
|
2014-02-21T09:14:16
|
|
Add efficient git_buf join3 API
There are a few places where we need to join three strings to
assemble a path. This adds a simple join3 function to avoid the
comparatively expensive join_n (which calls strlen on each string
twice).
|
|
|
4f46a98b
|
2014-02-24T23:32:25
|
|
Remove now-duplicated stdarg.h include
|
|
7cbc6241
|
2014-01-20T11:41:21
|
|
fix corner cases and an undefined behavior
|
|
|
6adcaab7
|
2014-01-08T10:07:30
|
|
Handle git_buf's from users more liberally
|
|
|
00e85927
|
2013-09-23T21:52:42
|
|
Clean up unnecessary git_buf_printf calls
This replaces some git_buf_printf calls with simple calls to
git_buf_put instead. Also, it fixes a missing va_end inside
the git_buf_vprintf implementation.
|
|
92d19d16
|
2013-09-21T09:34:03
|
|
Merge pull request #1840 from linquize/warning
Fix warning
|
|
66566516
|
2013-09-08T17:15:42
|
|
Fix warning
|
|
|
a9f51e43
|
2013-09-11T22:00:36
|
|
Merge git_buf and git_buffer
This makes the git_buf struct that was used internally into an
externally available structure and eliminates the git_buffer.
As part of that, some of the special cases that arose with the
externally used git_buffer were blended into the git_buf, such as
being careful about git_buf objects that may have a NULL ptr and
allowing for bufs with a valid ptr and size but zero asize as a
way of referring to externally owned data.
|
|
|
40cb40fa
|
2013-09-11T14:23:39
|
|
Add functions to manipulate filter lists
Extend the git2/sys/filter API with functions to look up a filter
and add it manually to a filter list. This requires some trickery
because the regular attribute lookups and checks are bypassed when
this happens, but in the right hands, it will allow a user to have
granular control over applying filters.
|
|
|
2a7d224f
|
2013-09-10T16:33:32
|
|
Extend public filter api with filter lists
This moves the git_filter_list into the public API so that users
can create, apply, and dispose of filter lists. This allows more
granular application of filters to user data outside of libgit2
internals.
This also converts all the internal usage of filters to the public
APIs along with a few small tweaks to make it easier to use the
public git_buffer stuff alongside the internal git_buf.
|
|
|
0cf77103
|
2013-08-26T23:17:07
|
|
Start of filter API + git_blob_filtered_content
This begins the process of exposing git_filter objects to the
public API. This includes:
* new public type and API for `git_buffer` through which an
allocated buffer can be passed to the user
* new API `git_blob_filtered_content`
* make the git_filter type and GIT_FILTER_TO_... constants public
|
|
|
278ce746
|
2013-07-01T10:20:38
|
|
Add helpful buffer shorten function
|
|
|
359fc2d2
|
2013-01-08T17:07:25
|
|
update copyrights
|
|
|
7bf87ab6
|
2012-11-28T09:58:48
|
|
Consolidate text buffer functions
There are many scattered functions that look into the contents of
buffers to do various text manipulations (such as escaping or
unescaping data, calculating text stats, guessing if content is
binary, etc). This groups all those functions together into a
new file and converts the code to use that.
This has two enhancements to existing functionality. The old
text stats function is significantly rewritten and the BOM
detection code was extended (although largely we can't deal with
anything other than a UTF8 BOM).
|
|
3a14d3e2
|
2012-10-01T11:58:15
|
|
buf: introduce git_buf_splice()
|
|
9d9288f4
|
2012-10-14T12:29:05
|
|
Fix buffer overrun in git_buf_put_base64
|
|
|
2d3579be
|
2012-10-10T14:54:31
|
|
Add git_buf_put_base64 to buffer API
|
|
|
0c8858de
|
2012-08-03T14:28:07
|
|
Fix valgrind issues and leaks
This fixes up a number of problems flagged by valgrind and also
cleans up the internal `git_submodule` allocation handling
overall with a simpler model.
|
|
02a0d651
|
2012-07-12T16:31:59
|
|
Add git_buf_unescape and git__unescape to unescape all characters in a string (in-place)
|
|
|
54e29b93
|
2012-07-10T23:51:32
|
|
Fix missing NUL termination of buffer
|
|
|
039fc406
|
2012-07-10T15:10:14
|
|
Add a couple of useful git_buf utilities
* `git_buf_rfind` (with tests and tests for `git_buf_rfind_next`)
* `git_buf_puts_escaped` and `git_buf_puts_escaped_regex` (with tests)
to copy strings into a buffer while injecting an escape sequence
(e.g. '\') in front of particular characters.
|
|
|
3f035860
|
2012-06-07T22:43:03
|
|
misc: Fix warnings from PVS Studio trial
|
|
|
e3557172
|
2012-05-17T14:44:17
|
|
No point in keeping commented out fn
|
|
|
a0d95962
|
2012-05-17T13:14:17
|
|
Other optimization and warning fixes
This fixes a warning left by the earlier optimization and
addresses one of the other hotspots identified by GProf.
|
|
|
b59c73d3
|
2012-05-17T13:06:20
|
|
Optimize away git_text_gather_stats in diff
GProf shows `git_text_gather_stats` as the most expensive call
in large diffs. The function calculates a lot of information
that is not actually used and does not do so in a optimal
order. This introduces a tuned `git_buf_is_binary` function
that executes the same algorithm in a fraction of the time.
|
|
|
2c833917
|
2012-05-15T16:33:05
|
|
Document git_buf_common_prefix
This function fills in a git_buf with the common prefix of
an array of strings, but let's make that a little more clear.
|
|
|
41a82592
|
2012-05-15T14:17:39
|
|
Ranged iterators and rewritten git_status_file
The goal of this work is to rewrite git_status_file to use the
same underlying code as git_status_foreach.
This is done in 3 phases:
1. Extend iterators to allow ranged iteration with start and
end prefixes for the range of file names to be covered.
2. Improve diff so that when there is a pathspec and there is
a common non-wildcard prefix of the pathspec, it will use
ranged iterators to minimize excess iteration.
3. Rewrite git_status_file to call git_status_foreach_ext
with a pathspec that covers just the one file being checked.
Since ranged iterators underlie the status & diff implementation,
this is actually fairly efficient. The workdir iterator does
end up loading the contents of all the directories down to the
single file, which should ideally be avoided, but it is pretty
good.
|
|
|
0f49200c
|
2012-05-09T04:37:02
|
|
msvc: Do not use `isspace`
Locale-aware bullshit bitting my ass again yo
|
|
|
baaf1c47
|
2012-05-02T23:44:22
|
|
buffer: Add `git_buf_vprintf`
|
|
|
2bc8fa02
|
2012-04-17T10:14:24
|
|
Implement git_pool paged memory allocator
This adds a `git_pool` object that can do simple paged memory
allocation with free for the entire pool at once. Using this,
you can replace many small allocations with large blocks that
can then cheaply be doled out in small pieces. This is best
used when you plan to free the small blocks all at once - for
example, if they represent the parsed state from a file or data
stream that are either all kept or all discarded.
There are two real patterns of usage for `git_pools`: either
for "string" allocation, where the item size is a single byte
and you end up just packing the allocations in together, or for
"fixed size" allocation where you are allocating a large object
(e.g. a `git_oid`) and you generally just allocation single
objects that can be tightly packed. Of course, you can use it
for other things, but those two cases are the easiest.
|
|
|
952f94c8
|
2012-03-30T14:42:23
|
|
Fix bug when join_n refers to original buffer
There was a bug in git_buf_join_n when the contents of the
original buffer were joined into itself and the realloc
moved the pointer to the original buffer.
|
|
0d0fa7c3
|
2012-03-16T15:56:01
|
|
Convert attr, ignore, mwindow, status to new errors
Also cleaned up some previously converted code that still had
little things to polish.
|
|
|
deafee7b
|
2012-03-14T17:36:15
|
|
Continue error conversion
This converts blob.c, fileops.c, and all of the win32 files.
Also, various minor cleanups throughout the code. Plus, in
testing the win32 build, I cleaned up a bunch (although not
all) of the warnings with the 64-bit build.
|
|
|
cb8a7961
|
2012-03-07T00:02:55
|
|
error-handling: Repository
This also includes droping `git_buf_lasterror` because it makes no sense
in the new system. Note that in most of the places were it has been
dropped, the code needs cleanup. I.e. GIT_ENOMEM is going away, so
instead it should return a generic `-1` and obviously not throw
anything.
|
|
|
ce49c7a8
|
2012-03-02T15:09:40
|
|
Add filter tests and fix some bugs
This adds some initial unit tests for file filtering and fixes
some simple bugs in filter application.
|
|
|
eb8f90e5
|
2012-02-27T17:22:51
|
|
buffer: Null terminate on rtrim
|
|
|
13224ea4
|
2012-02-27T04:28:31
|
|
buffer: Unify `git_fbuffer` and `git_buf`
This makes so much sense that I can't believe it hasn't been done
before. Kill the old `git_fbuffer` and read files straight into
`git_buf` objects.
Also: In order to fully support 4GB files in 32-bit systems, the
`git_buf` implementation has been changed from using `ssize_t` for
storage and storing negative values on allocation failure, to using
`size_t` and changing the buffer pointer to a magical pointer on
allocation failure.
Hopefully this won't break anything.
|
|
|
44b1ff4c
|
2012-02-27T04:31:05
|
|
filter: Apply filters before writing a file to the ODB
Initial implementation. The relevant code is in `blob.c`: the blob write
function has been split into smaller functions.
- Directly write a file to the ODB in streaming mode
- Directly write a symlink to the ODB in direct mode
- Apply a filter, and write a file to the ODB in direct mode
When trying to write a file, we first call `git_filter__load_for_file`,
which populates a filters array with the required filters based on the
filename.
If no filters are resolved to the filename, we can write to the ODB in
streaming mode straight from disk. Otherwise, we load the whole file in
memory and use double-buffering to apply the filter chain. We finish
by writing the file as a whole to the ODB.
|
|
|
b6c93aef
|
2012-02-21T14:46:24
|
|
Uniform iterators for trees, index, and workdir
This create a new git_iterator type of object that provides a
uniform interface for iterating over the index, an arbitrary
tree, or the working directory of a repository.
As part of this, git ignore support was extended to support
push and pop of directory-based ignore files as the working
directory is being traversed (so the array of ignores does
not have to be recreated at each directory during traveral).
There are a number of other small utility functions in buffer,
path, vector, and fileops that are included in this patch
that made the iterator implementation cleaner.
|
|
5e0de328
|
2012-02-13T17:10:24
|
|
Update Copyright header
Signed-off-by: schu <schu-github@schulog.org>
|
|
|
1dbcc9fc
|
2012-01-11T21:07:16
|
|
Fix several memory issues
This contains fixes for several issues discovered by MSVC and
by valgrind, including some bad data access, some memory
leakage (in where certain files were not being successfully
added to the cache), and some code simplification.
|
|
|
df743c7d
|
2012-01-09T15:37:19
|
|
Initial implementation of gitignore support
Adds support for .gitignore files to git_status_foreach() and
git_status_file(). This includes refactoring the gitattributes
code to share logic where possible. The GIT_STATUS_IGNORED flag
will now be passed in for files that are ignored (provided they
are not already in the index or the head of repo).
|
|
|
b5daae68
|
2011-12-14T12:34:43
|
|
Allow git_buf_joinpath to accept self-joins
It was not safe for git_buf_joinpath to be used with a pointer
into the buf itself because a reallocation could invalidate
the input parameter that pointed into the buffer. This patch
makes it safe to self join, at least for the leading input to
the join, which is the common "append" case for self joins.
Also added unit tests to explicitly cover this case.
This should actually fix #511
|
|
|
bf6d2717
|
2011-12-14T03:27:53
|
|
buffer: inline `git_buf_cstr`
|
|
|
97769280
|
2011-11-30T11:27:15
|
|
Use git_buf for path storage instead of stack-based buffers
This converts virtually all of the places that allocate GIT_PATH_MAX
buffers on the stack for manipulating paths to use git_buf objects
instead. The patch is pretty careful not to touch the public API
for libgit2, so there are a few places that still use GIT_PATH_MAX.
This extends and changes some details of the git_buf implementation
to add a couple of extra functions and to make error handling easier.
This includes serious alterations to all the path.c functions, and
several of the fileops.c ones, too. Also, there are a number of new
functions that parallel existing ones except that use a git_buf
instead of a stack-based buffer (such as git_config_find_global_r
that exists alongsize git_config_find_global).
This also modifies the win32 version of p_realpath to allocate whatever
buffer size is needed to accommodate the realpath instead of hardcoding
a GIT_PATH_MAX limit, but that change needs to be tested still.
|
|
|
969d588d
|
2011-11-30T13:10:47
|
|
Optimized of git_buf_join.
This streamlines git_buf_join and removes the join-append behavior,
opting instead for a very compact join-replace of the git_buf contents.
The unit tests had to be updated to remove the join-append tests and
have a bunch more exhaustive tests added.
|
|
|
309113c9
|
2011-11-29T23:45:17
|
|
Make initial value of git_buf ptr always be a valid empty string.
Taking a page from core git's strbuf, this introduces git_buf_initbuf
which is an empty string that is used to initialize the git_buf ptr
value even for new buffers. Now the git_buf ptr will always point to
a valid NUL-terminated string.
This change required jumping through a few hoops for git_buf_grow
and git_buf_free to distinguish between a actual allocated buffer
and the global initial value. Also, this moves the allocation
related functions to be next to each other near the top of buffer.c.
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c63728cd
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2011-11-29T16:39:49
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Make git_buf functions always maintain a valid cstr.
At a tiny cost of 1 extra byte per allocation, this makes
git_buf_cstr into basically a noop, which simplifies error
checking when trying to convert things to use dynamic allocation.
This patch also adds a new function (git_buf_copy_cstr) for copying
the cstr data directly into an external buffer.
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679b69c4
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2011-11-28T13:05:25
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Resolve remaining feedback
* replace some ints with size_ts
* update NULL checks in various places
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3aa294fd
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2011-11-28T10:42:57
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Add two string git_buf_join and tweak input error checking.
This commit addresses two of the comments:
* renamed existing n-input git_buf_join to git_buf_join_n
* added new git_buf_join that always takes two inputs
* moved some parameter error checking to asserts
* extended unit tests to cover new version of git_buf_join
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8c74d22e
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2011-11-27T21:47:58
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Extend git_buf with new utility functions and unit tests.
Add new functions to git_buf for:
* initializing a buffer from a string
* joining one or more strings onto a buffer with separators
* swapping two buffers in place
* extracting data from a git_buf (leaving it empty)
Also, make git_buf_free leave a git_buf back in its initted state,
and slightly tweak buffer allocation sizes and thresholds.
Finally, port unit tests to clay and extend with lots of new tests
for the various git_buf functions.
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3286c408
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2011-10-28T14:51:13
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global: Properly use `git__` memory wrappers
Ensure that all memory related functions (malloc, calloc, strdup, free,
etc) are using their respective `git__` wrappers.
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8114ee4c
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2011-09-22T10:17:43
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Merge pull request #405 from carlosmn/http-ls
Implement ls-remote over HTTP
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bb742ede
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2011-09-19T01:54:32
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Cleanup legal data
1. The license header is technically not valid if it doesn't have a
copyright signature.
2. The COPYING file has been updated with the different licenses used in
the project.
3. The full GPLv2 header in each file annoys me.
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b87600cb
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2011-09-05T02:33:02
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buffer: add git_buf_clear
Set the size to zero so the memory that has already been allocated
can be reused
Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>
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c7c30513
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2011-09-05T21:38:56
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buffer: add git_buf_consume
Moves the content after 'end' to the beginning of the buffer
Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>
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afeecf4f
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2011-07-09T02:10:46
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odb: Direct writes are back
DIRECT WRITES ARE BACK AND FASTER THAN EVER. The streaming writer to the
ODB was an overkill for the smaller objects like Commit and Tags; most
of the streaming logic was taking too long.
This commit makes Commits, Tags and Trees to be built-up in memory, and
then written to disk in 2 pushes (header + data), instead of streaming
everything.
This is *always* faster, even for big files (since the git_filebuf class
still does streaming writes when the memory cache overflows). This is
also a gazillion lines of code smaller, because we don't have to
precompute the final size of the object before starting the stream (this
was kind of defeating the point of streaming, anyway).
Blobs are still written with full streaming instead of loading them in
memory, since this is still the fastest way.
A new `git_buf` class has been added. It's missing some features, but
it'll get there.
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