From 4dbdc42d9e7c3968ff7f690d00680419c9b8cb0f Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Tue, 9 Apr 2024 15:34:27 +0200 Subject: Adding upstream version 1:2.43.0. Signed-off-by: Daniel Baumann --- write-or-die.h | 78 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 write-or-die.h (limited to 'write-or-die.h') diff --git a/write-or-die.h b/write-or-die.h new file mode 100644 index 0000000..65a5c42 --- /dev/null +++ b/write-or-die.h @@ -0,0 +1,78 @@ +#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 */ -- cgit v1.2.3