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| author | Patrick Steinhardt <ps@pks.im> | 2017-04-21 07:31:56 +0000 |
|---|---|---|
| committer | Patrick Steinhardt <ps@pks.im> | 2017-04-28 14:05:45 +0200 |
| commit | 35079f507b5287a2a4726cae7753439f753453e2 (patch) | |
| tree | 65ead793083b46ad4a813d1b488a6f01af451c87 /include/git2 | |
| parent | 28a0741f1ae6f5e1261c8e73854dda69e7a61067 (diff) | |
| download | libgit2-35079f507b5287a2a4726cae7753439f753453e2.tar.gz | |
odb: add option to turn off hash verification
Verifying hashsums of objects we are reading from the ODB may be costly
as we have to perform an additional hashsum calculation on the object.
Especially when reading large objects, the penalty can be as high as
35%, as can be seen when executing the equivalent of `git cat-file` with
and without verification enabled. To mitigate for this, we add a global
option for libgit2 which enables the developer to turn off the
verification, e.g. when he can be reasonably sure that the objects on
disk won't be corrupted.
Diffstat (limited to 'include/git2')
| -rw-r--r-- | include/git2/common.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/git2/common.h b/include/git2/common.h index 6d2092028..d83e8c3a0 100644 --- a/include/git2/common.h +++ b/include/git2/common.h @@ -182,6 +182,7 @@ typedef enum { GIT_OPT_ENABLE_SYNCHRONOUS_OBJECT_CREATION, GIT_OPT_GET_WINDOWS_SHAREMODE, GIT_OPT_SET_WINDOWS_SHAREMODE, + GIT_OPT_ENABLE_STRICT_HASH_VERIFICATION, } git_libgit2_opt_t; /** @@ -337,6 +338,13 @@ typedef enum { * > is written to permanent storage, not simply cached. This * > defaults to disabled. * + * opts(GIT_OPT_ENABLE_STRICT_HASH_VERIFICATION, int enabled) + * + * > Enable strict verification of object hashsums when reading + * > objects from disk. This may impact performance due to an + * > additional checksum calculation on each object. This defaults + * > to enabled. + * * @param option Option key * @param ... value to set the option * @return 0 on success, <0 on failure |