kmx git

Commit	Date	Message
f0f97370	2014-10-18T15:52:10	ssl: dump the SSL ciphers in favour of TLS All versions of SSL are considered deprecated now, so let's ask OpenSSl to only use TLSv1. We still ask it to load those ciphers for compatibility with servers which want to use an older hello but will use TLS for encryption. For good measure we also disable compression, which can be exploitable, if the OpenSSL version supports it.
fdea219a	2014-09-10T18:28:19	global: free the error message when exiting a thread When we free the global state at thread termination, we must also free the error message in order not to leak the string once per thread.
f59a34d2	2014-07-12T14:45:34	Only create openssl_locks if thread support is enabled
e6b0ae7a	2014-06-30T09:19:05	ssl: init only once without threads The OpenSSL library-loading functions do not expect to be called multiple times. Add a flag in the non-threaded libgit2 init so we only call once. This fixes #2446.
e93206e0	2014-06-14T12:58:03	Merge pull request #2421 from libgit2/cmn/init-ssl-once netops: init OpenSSL once under lock
081e76ba	2014-06-12T16:20:52	ssl: init everything all the time Bring together all of the OpenSSL initialization to git_threads_init() so it's together and doesn't need locks. Moving it here also gives us libssh2 thread safety (when built against openssl).
8f897b6f	2014-06-12T14:50:08	ssl: init also without threads
cf15ac8a	2014-06-12T03:20:34	ssl: cargo-cult thread safety OpenSSL's tests init everything in the main thread, so let's do that.
1d3364ac	2014-06-11T20:52:15	netops: init OpenSSL once under lock The OpenSSL init functions are not reentrant, which means that running multiple fetches in parallel can cause us to crash. Use a mutex to init OpenSSL, and since we're adding this extra checks, init it only once.
fb591767	2014-06-07T12:51:48	Win32: Fix object::cache::threadmania test on x64
138af337	2014-05-19T12:20:31	Merge pull request #2303 from jacquesg/mingw-lseek WIP: Windows fixes
0bf5430d	2014-05-06T13:33:47	Fix the issues in git_shutdown 1) Call to git_shutdown results in setting git__n_shutdown_callbacks to -1. Next call to git__on_shutdown results in ABW (Array Bound Write) for array git__shutdown_callbacks. In the current Implementation, git_atomic_dec is called git__n_shutdown_callbacks + 1 times. I have modified it to a for loop so that it is more readable. It would not set git__n_shutdown_callbacks to a negative number and reset the elements of git__shutdown_callbacks to NULL. 2) In function git_sysdir_get, shutdown function is registered only if git_sysdir__dirs_shutdown_set is set to 0. However, after this variable is set to 1, it is never reset to 0. If git_sysdir_global_init is called again from synchronized_threads_init it does not register shutdown function for this subsystem.
001befcd	2014-05-06T12:16:24	Fix the issues in git__on_shutdown
6e94a1ef	2014-04-27T14:25:49	_InterlockedExchange expects a volatile LONG
3816debc	2014-03-14T14:51:04	Fix threading tests when threads disabled
efaa342c	2014-04-11T22:07:49	Correct C90 warnings
83634d38	2014-02-24T17:43:10	Move system directory cache out of utils
22661448	2013-10-04T19:35:32	Don't use git_atomic as an integer
cdc95a0d	2013-10-04T18:38:37	Use InterlockedCompareExchange for the lock
e411b74e	2013-10-04T19:33:48	Posix synchronized init, prototype win32 version
a3aa5f4d	2013-09-11T12:45:20	Add simple global shutdown hooks Increasingly there are a number of components that want to do some cleanup at global shutdown time (at least if there are not going to be memory leaks). This creates a very simple system of shutdown hooks that will be invoked by git_threads_shutdown. Right now, the maximum number of hooks is hardcoded, but since adding a hook is not a public API, it should be fine and I thought it was better to start off with really simple code.
43095341	2013-08-26T14:56:31	Load SRWLock APIs at runtime This loads SRWLock APIs at runtime and in their absence (i.e. on Windows before Vista) falls back on a regular CRITICAL_SECTION that will not permit concurrent readers.
0a1c8f55	2013-07-11T17:09:15	preload configuration paths
1a42dd17	2013-05-31T14:13:11	Mutex init can fail It is obviously quite a serious problem if this happens, but mutex initialization can fail and we should detect it. It's a bit like a memory allocation failure, in that you're probably pretty screwed if this occurs, but at least we'll catch it.
53607868	2013-04-15T00:09:03	Further threading fixes This builds on the earlier thread safety work to make it so that setting the odb, index, refdb, or config for a repository is done in a threadsafe manner with minimized locking time. This is done by adding a lock to the repository object and using it to guard the assignment of the above listed pointers. The lock is only held to assign the pointer value. This also contains some minor fixes to the other work with pack files to reduce the time that locks are being held to and fix an apparently memory leak.
41954a49	2013-03-18T14:19:35	Switch search paths to classic delimited strings This switches the APIs for setting and getting the global/system search paths from using git_strarray to using a simple string with GIT_PATH_LIST_SEPARATOR delimited paths, just as the environment PATH variable would contain. This makes it simpler to get and set the value. I also added code to expand "$PATH" when setting a new value to embed the old value of the path. This means that I no longer require separate actions to PREPEND to the value.
359fc2d2	2013-01-08T17:07:25	update copyrights
c3320aca	2012-12-09T02:22:50	git__mwindow_mutex needs to be initialized even with pthreads This could also use PTHREAD_MUTEX_INITIALIZER, but a dynamic initializer seems like a more portable concept, and we won't need another #define on top of git_mutex_init()
a8527429	2012-11-13T14:48:10	unload dll / destroy hash ctxs at shutdown
7ebefd22	2012-11-13T10:10:40	move hash library func ptrs to global global
93b5fabc	2012-10-01T17:59:04	threads: Assert that the global state is initialized
8cef828d	2012-08-18T22:11:49	Make the memory-window conrol structures global Up to now, the idea was that the user would do all the operations for one repository in the same thread. Thus we could have the memory-mapped window information thread-local and avoid any locking. This is not practical in a few environments, such as Apple's GCD which allocates threads arbitrarily or the .NET CLR, where the OS-level thread can change at any moment. Make the control structure global and protect it with a mutex so we don't depend on the thread currently executing the code.
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.
5e0de328	2012-02-13T17:10:24	Update Copyright header Signed-off-by: schu <schu-github@schulog.org>
a15c550d	2011-11-16T14:09:44	threads: Fix the shared global state with TLS See `global.c` for a description of what we're doing. When libgit2 is built with GIT_THREADS support, the threading system must be explicitly initialized with `git_threads_init()`.

f0f97370

2014-10-18T15:52:10

ssl: dump the SSL ciphers in favour of TLS All versions of SSL are considered deprecated now, so let's ask OpenSSl to only use TLSv1. We still ask it to load those ciphers for compatibility with servers which want to use an older hello but will use TLS for encryption. For good measure we also disable compression, which can be exploitable, if the OpenSSL version supports it.

fdea219a

2014-09-10T18:28:19

global: free the error message when exiting a thread When we free the global state at thread termination, we must also free the error message in order not to leak the string once per thread.

f59a34d2

2014-07-12T14:45:34

Only create openssl_locks if thread support is enabled

e6b0ae7a

2014-06-30T09:19:05

ssl: init only once without threads The OpenSSL library-loading functions do not expect to be called multiple times. Add a flag in the non-threaded libgit2 init so we only call once. This fixes #2446.

e93206e0

2014-06-14T12:58:03

Merge pull request #2421 from libgit2/cmn/init-ssl-once netops: init OpenSSL once under lock

081e76ba

2014-06-12T16:20:52

ssl: init everything all the time Bring together all of the OpenSSL initialization to git_threads_init() so it's together and doesn't need locks. Moving it here also gives us libssh2 thread safety (when built against openssl).

8f897b6f

2014-06-12T14:50:08

ssl: init also without threads

cf15ac8a

2014-06-12T03:20:34

ssl: cargo-cult thread safety OpenSSL's tests init everything in the main thread, so let's do that.

1d3364ac

2014-06-11T20:52:15

netops: init OpenSSL once under lock The OpenSSL init functions are not reentrant, which means that running multiple fetches in parallel can cause us to crash. Use a mutex to init OpenSSL, and since we're adding this extra checks, init it only once.

fb591767

2014-06-07T12:51:48

Win32: Fix object::cache::threadmania test on x64

138af337

2014-05-19T12:20:31

Merge pull request #2303 from jacquesg/mingw-lseek WIP: Windows fixes

0bf5430d

2014-05-06T13:33:47

Fix the issues in git_shutdown 1) Call to git_shutdown results in setting git__n_shutdown_callbacks to -1. Next call to git__on_shutdown results in ABW (Array Bound Write) for array git__shutdown_callbacks. In the current Implementation, git_atomic_dec is called git__n_shutdown_callbacks + 1 times. I have modified it to a for loop so that it is more readable. It would not set git__n_shutdown_callbacks to a negative number and reset the elements of git__shutdown_callbacks to NULL. 2) In function git_sysdir_get, shutdown function is registered only if git_sysdir__dirs_shutdown_set is set to 0. However, after this variable is set to 1, it is never reset to 0. If git_sysdir_global_init is called again from synchronized_threads_init it does not register shutdown function for this subsystem.

001befcd

2014-05-06T12:16:24

Fix the issues in git__on_shutdown

6e94a1ef

2014-04-27T14:25:49

_InterlockedExchange expects a volatile LONG

3816debc

2014-03-14T14:51:04

Fix threading tests when threads disabled

efaa342c

2014-04-11T22:07:49

Correct C90 warnings

83634d38

2014-02-24T17:43:10

Move system directory cache out of utils

22661448

2013-10-04T19:35:32

Don't use git_atomic as an integer

cdc95a0d

2013-10-04T18:38:37

Use InterlockedCompareExchange for the lock

e411b74e

2013-10-04T19:33:48

Posix synchronized init, prototype win32 version

a3aa5f4d

2013-09-11T12:45:20

Add simple global shutdown hooks Increasingly there are a number of components that want to do some cleanup at global shutdown time (at least if there are not going to be memory leaks). This creates a very simple system of shutdown hooks that will be invoked by git_threads_shutdown. Right now, the maximum number of hooks is hardcoded, but since adding a hook is not a public API, it should be fine and I thought it was better to start off with really simple code.

43095341

2013-08-26T14:56:31

Load SRWLock APIs at runtime This loads SRWLock APIs at runtime and in their absence (i.e. on Windows before Vista) falls back on a regular CRITICAL_SECTION that will not permit concurrent readers.

0a1c8f55

2013-07-11T17:09:15

preload configuration paths

1a42dd17

2013-05-31T14:13:11

Mutex init can fail It is obviously quite a serious problem if this happens, but mutex initialization can fail and we should detect it. It's a bit like a memory allocation failure, in that you're probably pretty screwed if this occurs, but at least we'll catch it.

53607868

2013-04-15T00:09:03

Further threading fixes This builds on the earlier thread safety work to make it so that setting the odb, index, refdb, or config for a repository is done in a threadsafe manner with minimized locking time. This is done by adding a lock to the repository object and using it to guard the assignment of the above listed pointers. The lock is only held to assign the pointer value. This also contains some minor fixes to the other work with pack files to reduce the time that locks are being held to and fix an apparently memory leak.

41954a49

2013-03-18T14:19:35

Switch search paths to classic delimited strings This switches the APIs for setting and getting the global/system search paths from using git_strarray to using a simple string with GIT_PATH_LIST_SEPARATOR delimited paths, just as the environment PATH variable would contain. This makes it simpler to get and set the value. I also added code to expand "$PATH" when setting a new value to embed the old value of the path. This means that I no longer require separate actions to PREPEND to the value.

359fc2d2

2013-01-08T17:07:25

update copyrights

c3320aca

2012-12-09T02:22:50

git__mwindow_mutex needs to be initialized even with pthreads This could also use PTHREAD_MUTEX_INITIALIZER, but a dynamic initializer seems like a more portable concept, and we won't need another #define on top of git_mutex_init()

a8527429

2012-11-13T14:48:10

unload dll / destroy hash ctxs at shutdown

7ebefd22

2012-11-13T10:10:40

move hash library func ptrs to global global

93b5fabc

2012-10-01T17:59:04

threads: Assert that the global state is initialized

8cef828d

2012-08-18T22:11:49

Make the memory-window conrol structures global Up to now, the idea was that the user would do all the operations for one repository in the same thread. Thus we could have the memory-mapped window information thread-local and avoid any locking. This is not practical in a few environments, such as Apple's GCD which allocates threads arbitrarily or the .NET CLR, where the OS-level thread can change at any moment. Make the control structure global and protect it with a mutex so we don't depend on the thread currently executing the code.

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.

5e0de328

2012-02-13T17:10:24

Update Copyright header Signed-off-by: schu <schu-github@schulog.org>

a15c550d

2011-11-16T14:09:44

threads: Fix the shared global state with TLS See `global.c` for a description of what we're doing. When libgit2 is built with GIT_THREADS support, the threading system must be explicitly initialized with `git_threads_init()`.

thodg/libgit2/src/global.c

src/global.c

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