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#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);
/*
* 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,
};
#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)
#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 */
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