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https://git.proxmox.com/git/libgit2
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afeecf4f26
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.
53 lines
1.3 KiB
C
53 lines
1.3 KiB
C
#ifndef INCLUDE_filebuf_h__
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#define INCLUDE_filebuf_h__
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#include "fileops.h"
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#include "hash.h"
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#include "git2/zlib.h"
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#ifdef GIT_THREADS
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# define GIT_FILEBUF_THREADS
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#endif
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#define GIT_FILEBUF_HASH_CONTENTS (1 << 0)
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#define GIT_FILEBUF_APPEND (1 << 2)
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#define GIT_FILEBUF_FORCE (1 << 3)
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#define GIT_FILEBUF_TEMPORARY (1 << 4)
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#define GIT_FILEBUF_DEFLATE_CONTENTS (1 << 5)
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#define GIT_FILELOCK_EXTENSION ".lock\0"
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#define GIT_FILELOCK_EXTLENGTH 6
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struct git_filebuf {
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char *path_original;
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char *path_lock;
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int (*write)(struct git_filebuf *file,
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const void *source, size_t len);
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git_hash_ctx *digest;
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unsigned char *buffer;
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unsigned char *z_buf;
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z_stream zs;
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int flush_mode;
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size_t buf_size, buf_pos;
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git_file fd;
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};
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typedef struct git_filebuf git_filebuf;
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int git_filebuf_write(git_filebuf *lock, const void *buff, size_t len);
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int git_filebuf_reserve(git_filebuf *file, void **buff, size_t len);
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int git_filebuf_printf(git_filebuf *file, const char *format, ...) GIT_FORMAT_PRINTF(2, 3);
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int git_filebuf_open(git_filebuf *lock, const char *path, int flags);
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int git_filebuf_commit(git_filebuf *lock);
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int git_filebuf_commit_at(git_filebuf *lock, const char *path);
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void git_filebuf_cleanup(git_filebuf *lock);
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int git_filebuf_hash(git_oid *oid, git_filebuf *file);
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#endif
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