diff options
Diffstat (limited to 'libctf/ctf-impl.h')
| -rw-r--r-- | libctf/ctf-impl.h | 43 |
1 files changed, 41 insertions, 2 deletions
diff --git a/libctf/ctf-impl.h b/libctf/ctf-impl.h index 2601e1b..b51118c 100644 --- a/libctf/ctf-impl.h +++ b/libctf/ctf-impl.h @@ -71,6 +71,12 @@ typedef struct ctf_strs size_t cts_len; /* Size of string table in bytes. */ } ctf_strs_t; +typedef struct ctf_strs_writable +{ + char *cts_strs; /* Base address of string table. */ + size_t cts_len; /* Size of string table in bytes. */ +} ctf_strs_writable_t; + typedef struct ctf_dmodel { const char *ctd_name; /* Data model name. */ @@ -147,7 +153,7 @@ typedef struct ctf_dtdef ctf_list_t dtd_list; /* List forward/back pointers. */ char *dtd_name; /* Name associated with definition (if any). */ ctf_id_t dtd_type; /* Type identifier for this definition. */ - ctf_type_t dtd_data; /* Type node (see <ctf.h>). */ + ctf_type_t dtd_data; /* Type node: name left unpopulated. */ union { ctf_list_t dtu_members; /* struct, union, or enum */ @@ -173,6 +179,30 @@ typedef struct ctf_bundle ctf_dtdef_t *ctb_dtd; /* CTF dynamic type definition (if any). */ } ctf_bundle_t; +/* Atoms associate strings with a list of the CTF items that reference that + string, so that ctf_update() can instantiate all the strings using the + ctf_str_atoms and then reassociate them with the real string later. + + Strings can be interned into ctf_str_atom without having refs associated + with them, for values that are returned to callers, etc. Items are only + removed from this table on ctf_close(), but on every ctf_update(), all the + csa_refs in all entries are purged. */ + +typedef struct ctf_str_atom +{ + const char *csa_str; /* Backpointer to string (hash key). */ + ctf_list_t csa_refs; /* This string's refs. */ + unsigned long csa_snapshot_id; /* Snapshot ID at time of creation. */ +} ctf_str_atom_t; + +/* The refs of a single string in the atoms table. */ + +typedef struct ctf_str_atom_ref +{ + ctf_list_t caf_list; /* List forward/back pointers. */ + uint32_t *caf_ref; /* A single ref to this string. */ +} ctf_str_atom_ref_t; + /* The ctf_file is the structure used to represent a CTF container to library clients, who see it only as an opaque pointer. Modifications can therefore be made freely to this structure without regard to client versioning. The @@ -198,6 +228,8 @@ struct ctf_file ctf_hash_t *ctf_names; /* Hash table of remaining type names. */ ctf_lookup_t ctf_lookups[5]; /* Pointers to hashes for name lookup. */ ctf_strs_t ctf_str[2]; /* Array of string table base and bounds. */ + ctf_dynhash_t *ctf_str_atoms; /* Hash table of ctf_str_atoms_t. */ + uint64_t ctf_str_num_refs; /* Number of refs to cts_str_atoms. */ const unsigned char *ctf_base; /* Base of CTF header + uncompressed buffer. */ const unsigned char *ctf_buf; /* Uncompressed CTF data buffer. */ size_t ctf_size; /* Size of CTF header + uncompressed data. */ @@ -223,7 +255,6 @@ struct ctf_file ctf_list_t ctf_dtdefs; /* List of dynamic type definitions. */ ctf_dynhash_t *ctf_dvhash; /* Hash of dynamic variable mappings. */ ctf_list_t ctf_dvdefs; /* List of dynamic variable definitions. */ - size_t ctf_dtvstrlen; /* Total length of dynamic type+var strings. */ unsigned long ctf_dtnextid; /* Next dynamic type id to assign. */ unsigned long ctf_dtoldid; /* Oldest id that has been committed. */ unsigned long ctf_snapshots; /* ctf_snapshot() plus ctf_update() count. */ @@ -341,6 +372,13 @@ extern char *ctf_decl_buf (ctf_decl_t *cd); extern const char *ctf_strraw (ctf_file_t *, uint32_t); extern const char *ctf_strptr (ctf_file_t *, uint32_t); +extern int ctf_str_create_atoms (ctf_file_t *); +extern void ctf_str_free_atoms (ctf_file_t *); +extern const char *ctf_str_add (ctf_file_t *, const char *); +extern const char *ctf_str_add_ref (ctf_file_t *, const char *, uint32_t *); +extern void ctf_str_rollback (ctf_file_t *, ctf_snapshot_id_t); +extern void ctf_str_purge_refs (ctf_file_t *); +extern ctf_strs_writable_t ctf_str_write_strtab (ctf_file_t *); extern struct ctf_archive *ctf_arc_open_internal (const char *, int *); extern struct ctf_archive *ctf_arc_bufopen (const void *, size_t, int *); @@ -356,6 +394,7 @@ extern ssize_t ctf_pread (int fd, void *buf, ssize_t count, off_t offset); _libctf_malloc_ extern void *ctf_alloc (size_t); extern void ctf_free (void *); +extern void *ctf_realloc (ctf_file_t *, void *, size_t); _libctf_malloc_ extern char *ctf_strdup (const char *); |