/src/git/write-or-die.h

Source
#ifndef WRITE_OR_DIE_H
#define WRITE_OR_DIE_H

void maybe_flush_or_die(FILE *, const char *);
__attribute__((format (printf, 2, 3)))
void fprintf_or_die(FILE *, const char *fmt, ...);
void fwrite_or_die(FILE *f, const void *buf, size_t count);
void fflush_or_die(FILE *f);
void write_or_die(int fd, const void *buf, size_t count);
void writev_or_die(int fd, struct iovec *iov, int iovlen);

/*
 * These values are used to help identify parts of a repository to fsync.
 * FSYNC_COMPONENT_NONE identifies data that will not be a persistent part of the
 * repository and so shouldn't be fsynced.
 */
enum fsync_component {
  FSYNC_COMPONENT_NONE,
  FSYNC_COMPONENT_LOOSE_OBJECT    = 1 << 0,
  FSYNC_COMPONENT_PACK      = 1 << 1,
  FSYNC_COMPONENT_PACK_METADATA   = 1 << 2,
  FSYNC_COMPONENT_COMMIT_GRAPH    = 1 << 3,
  FSYNC_COMPONENT_INDEX     = 1 << 4,
  FSYNC_COMPONENT_REFERENCE   = 1 << 5,
  FSYNC_COMPONENT_OBJECT_MAP    = 1 << 6,
};

#define FSYNC_COMPONENTS_OBJECTS (FSYNC_COMPONENT_LOOSE_OBJECT | \
          FSYNC_COMPONENT_PACK)

#define FSYNC_COMPONENTS_DERIVED_METADATA (FSYNC_COMPONENT_PACK_METADATA | \
             FSYNC_COMPONENT_COMMIT_GRAPH)

#define FSYNC_COMPONENTS_DEFAULT ((FSYNC_COMPONENTS_OBJECTS | \
           FSYNC_COMPONENTS_DERIVED_METADATA) & \
          ~FSYNC_COMPONENT_LOOSE_OBJECT)

#define FSYNC_COMPONENTS_COMMITTED (FSYNC_COMPONENTS_OBJECTS | \
            FSYNC_COMPONENT_REFERENCE)

#define FSYNC_COMPONENTS_ADDED (FSYNC_COMPONENTS_COMMITTED | \
        FSYNC_COMPONENT_INDEX)

#define FSYNC_COMPONENTS_ALL (FSYNC_COMPONENT_LOOSE_OBJECT | \
            FSYNC_COMPONENT_PACK | \
            FSYNC_COMPONENT_PACK_METADATA | \
            FSYNC_COMPONENT_COMMIT_GRAPH | \
            FSYNC_COMPONENT_INDEX | \
            FSYNC_COMPONENT_REFERENCE | \
            FSYNC_COMPONENT_OBJECT_MAP)

#ifndef FSYNC_COMPONENTS_PLATFORM_DEFAULT
#define FSYNC_COMPONENTS_PLATFORM_DEFAULT FSYNC_COMPONENTS_DEFAULT
#endif

/* IO helper functions */
void fsync_or_die(int fd, const char *);
int fsync_component(enum fsync_component component, int fd);
void fsync_component_or_die(enum fsync_component component, int fd, const char *msg);

/*
 * A bitmask indicating which components of the repo should be fsynced.
 */
extern enum fsync_component fsync_components;
extern int fsync_object_files;
extern int use_fsync;

enum fsync_method {
  FSYNC_METHOD_FSYNC,
  FSYNC_METHOD_WRITEOUT_ONLY,
  FSYNC_METHOD_BATCH,
};

extern enum fsync_method fsync_method;

static inline int batch_fsync_enabled(enum fsync_component component)
{
  return (fsync_components & component) && (fsync_method == FSYNC_METHOD_BATCH);
}

#endif /* WRITE_OR_DIE_H */

Line	Count	Source
1		#ifndef WRITE_OR_DIE_H
2		#define WRITE_OR_DIE_H
3
4		void maybe_flush_or_die(FILE , const char );
5		__attribute__((format (printf, 2, 3)))
6		void fprintf_or_die(FILE , const char fmt, ...);
7		void fwrite_or_die(FILE f, const void buf, size_t count);
8		void fflush_or_die(FILE *f);
9		void write_or_die(int fd, const void *buf, size_t count);
10		void writev_or_die(int fd, struct iovec *iov, int iovlen);
11
12		/*
13		* These values are used to help identify parts of a repository to fsync.
14		* FSYNC_COMPONENT_NONE identifies data that will not be a persistent part of the
15		* repository and so shouldn't be fsynced.
16		*/
17		enum fsync_component {
18		FSYNC_COMPONENT_NONE,
19		FSYNC_COMPONENT_LOOSE_OBJECT = 1 << 0,
20		FSYNC_COMPONENT_PACK = 1 << 1,
21		FSYNC_COMPONENT_PACK_METADATA = 1 << 2,
22		FSYNC_COMPONENT_COMMIT_GRAPH = 1 << 3,
23		FSYNC_COMPONENT_INDEX = 1 << 4,
24		FSYNC_COMPONENT_REFERENCE = 1 << 5,
25		FSYNC_COMPONENT_OBJECT_MAP = 1 << 6,
26		};
27
28	0	#define FSYNC_COMPONENTS_OBJECTS (FSYNC_COMPONENT_LOOSE_OBJECT \| \
29	0	FSYNC_COMPONENT_PACK)
30
31	0	#define FSYNC_COMPONENTS_DERIVED_METADATA (FSYNC_COMPONENT_PACK_METADATA \| \
32	0	FSYNC_COMPONENT_COMMIT_GRAPH)
33
34	0	#define FSYNC_COMPONENTS_DEFAULT ((FSYNC_COMPONENTS_OBJECTS \| \
35	0	FSYNC_COMPONENTS_DERIVED_METADATA) & \
36	0	~FSYNC_COMPONENT_LOOSE_OBJECT)
37
38		#define FSYNC_COMPONENTS_COMMITTED (FSYNC_COMPONENTS_OBJECTS \| \
39		FSYNC_COMPONENT_REFERENCE)
40
41		#define FSYNC_COMPONENTS_ADDED (FSYNC_COMPONENTS_COMMITTED \| \
42		FSYNC_COMPONENT_INDEX)
43
44		#define FSYNC_COMPONENTS_ALL (FSYNC_COMPONENT_LOOSE_OBJECT \| \
45		FSYNC_COMPONENT_PACK \| \
46		FSYNC_COMPONENT_PACK_METADATA \| \
47		FSYNC_COMPONENT_COMMIT_GRAPH \| \
48		FSYNC_COMPONENT_INDEX \| \
49		FSYNC_COMPONENT_REFERENCE \| \
50		FSYNC_COMPONENT_OBJECT_MAP)
51
52		#ifndef FSYNC_COMPONENTS_PLATFORM_DEFAULT
53	0	#define FSYNC_COMPONENTS_PLATFORM_DEFAULT FSYNC_COMPONENTS_DEFAULT
54		#endif
55
56		/* IO helper functions */
57		void fsync_or_die(int fd, const char *);
58		int fsync_component(enum fsync_component component, int fd);
59		void fsync_component_or_die(enum fsync_component component, int fd, const char *msg);
60
61		/*
62		* A bitmask indicating which components of the repo should be fsynced.
63		*/
64		extern enum fsync_component fsync_components;
65		extern int fsync_object_files;
66		extern int use_fsync;
67
68		enum fsync_method {
69		FSYNC_METHOD_FSYNC,
70		FSYNC_METHOD_WRITEOUT_ONLY,
71		FSYNC_METHOD_BATCH,
72		};
73
74		extern enum fsync_method fsync_method;
75
76		static inline int batch_fsync_enabled(enum fsync_component component)
77	0	{
78	0	return (fsync_components & component) && (fsync_method == FSYNC_METHOD_BATCH);
79	0	} Unexecuted instantiation: config.c:batch_fsync_enabled Unexecuted instantiation: environment.c:batch_fsync_enabled Unexecuted instantiation: object-file.c:batch_fsync_enabled Unexecuted instantiation: odb.c:batch_fsync_enabled Unexecuted instantiation: source-files.c:batch_fsync_enabled Unexecuted instantiation: pack-write.c:batch_fsync_enabled Unexecuted instantiation: packfile.c:batch_fsync_enabled Unexecuted instantiation: read-cache.c:batch_fsync_enabled Unexecuted instantiation: files-backend.c:batch_fsync_enabled Unexecuted instantiation: reftable-backend.c:batch_fsync_enabled Unexecuted instantiation: packed-backend.c:batch_fsync_enabled Unexecuted instantiation: repo-settings.c:batch_fsync_enabled Unexecuted instantiation: write-or-die.c:batch_fsync_enabled Unexecuted instantiation: bundle.c:batch_fsync_enabled Unexecuted instantiation: chunk-format.c:batch_fsync_enabled Unexecuted instantiation: commit-graph.c:batch_fsync_enabled Unexecuted instantiation: csum-file.c:batch_fsync_enabled Unexecuted instantiation: fetch-pack.c:batch_fsync_enabled Unexecuted instantiation: log-tree.c:batch_fsync_enabled Unexecuted instantiation: midx.c:batch_fsync_enabled Unexecuted instantiation: pack-check.c:batch_fsync_enabled Unexecuted instantiation: pack-revindex.c:batch_fsync_enabled Unexecuted instantiation: pkt-line.c:batch_fsync_enabled Unexecuted instantiation: send-pack.c:batch_fsync_enabled Unexecuted instantiation: sideband.c:batch_fsync_enabled
80
81		#endif /* WRITE_OR_DIE_H */

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Created: 2026-03-31 06:24