/* *INDENT-OFF* */ /* ATTRIBUTE_PRINTF confuses indent, avoid running it
for now. */
/* I/O, string, cleanup, and other random utilities for GDB.
- Copyright (C) 1986-2019 Free Software Foundation, Inc.
+ Copyright (C) 1986-2022 Free Software Foundation, Inc.
This file is part of GDB.
#define UTILS_H
#include "exceptions.h"
+#include "gdbsupport/array-view.h"
#include "gdbsupport/scoped_restore.h"
#include <chrono>
+#ifdef HAVE_LIBXXHASH
+#include <xxhash.h>
+#endif
+
struct completion_match_for_lcd;
class compiled_regex;
-extern void initialize_utils (void);
-
/* String utilities. */
-extern int sevenbit_strings;
+extern bool sevenbit_strings;
/* Modes of operation for strncmp_iw_with_mode. */
extern bool streq (const char *, const char *);
-/* A variant of streq that is suitable for use as an htab
- callback. */
-
-extern int streq_hash (const void *, const void *);
-
extern int subset_compare (const char *, const char *);
-int compare_positive_ints (const void *ap, const void *bp);
-
/* Compare C strings for std::sort. */
static inline bool
return strcmp (str1, str2) < 0;
}
-/* A wrapper for bfd_errmsg to produce a more helpful error message
- in the case of bfd_error_file_ambiguously recognized.
- MATCHING, if non-NULL, is the corresponding argument to
- bfd_check_format_matches, and will be freed. */
-
-extern std::string gdb_bfd_errmsg (bfd_error_type error_tag, char **matching);
-
/* Reset the prompt_for_continue clock. */
void reset_prompt_for_continue_wait_time (void);
/* Return the time spent in prompt_for_continue. */
std::chrono::steady_clock::duration get_prompt_for_continue_wait_time ();
\f
-/* Parsing utilites. */
+/* Parsing utilities. */
extern int parse_pid_to_attach (const char *args);
extern int parse_escape (struct gdbarch *, const char **);
-/* A wrapper for an array of char* that was allocated in the way that
- 'buildargv' does, and should be freed with 'freeargv'. */
-
-class gdb_argv
-{
-public:
-
- /* A constructor that initializes to NULL. */
-
- gdb_argv ()
- : m_argv (NULL)
- {
- }
-
- /* A constructor that calls buildargv on STR. STR may be NULL, in
- which case this object is initialized with a NULL array. If
- buildargv fails due to out-of-memory, call malloc_failure.
- Therefore, the value is guaranteed to be non-NULL, unless the
- parameter itself is NULL. */
-
- explicit gdb_argv (const char *str)
- : m_argv (NULL)
- {
- reset (str);
- }
-
- /* A constructor that takes ownership of an existing array. */
-
- explicit gdb_argv (char **array)
- : m_argv (array)
- {
- }
-
- gdb_argv (const gdb_argv &) = delete;
- gdb_argv &operator= (const gdb_argv &) = delete;
-
- ~gdb_argv ()
- {
- freeargv (m_argv);
- }
-
- /* Call buildargv on STR, storing the result in this object. Any
- previous state is freed. STR may be NULL, in which case this
- object is reset with a NULL array. If buildargv fails due to
- out-of-memory, call malloc_failure. Therefore, the value is
- guaranteed to be non-NULL, unless the parameter itself is
- NULL. */
-
- void reset (const char *str);
-
- /* Return the underlying array. */
-
- char **get ()
- {
- return m_argv;
- }
-
- /* Return the underlying array, transferring ownership to the
- caller. */
-
- ATTRIBUTE_UNUSED_RESULT char **release ()
- {
- char **result = m_argv;
- m_argv = NULL;
- return result;
- }
-
- /* Return the number of items in the array. */
-
- int count () const
- {
- return countargv (m_argv);
- }
-
- /* Index into the array. */
-
- char *operator[] (int arg)
- {
- gdb_assert (m_argv != NULL);
- return m_argv[arg];
- }
-
- /* The iterator type. */
-
- typedef char **iterator;
-
- /* Return an iterator pointing to the start of the array. */
-
- iterator begin ()
- {
- return m_argv;
- }
-
- /* Return an iterator pointing to the end of the array. */
-
- iterator end ()
- {
- return m_argv + count ();
- }
-
- bool operator!= (std::nullptr_t)
- {
- return m_argv != NULL;
- }
-
- bool operator== (std::nullptr_t)
- {
- return m_argv == NULL;
- }
-
-private:
-
- /* The wrapped array. */
-
- char **m_argv;
-};
-
\f
/* Cleanup utilities. */
-/* A deleter for a hash table. */
-struct htab_deleter
-{
- void operator() (htab *ptr) const
- {
- htab_delete (ptr);
- }
-};
-
-/* A unique_ptr wrapper for htab_t. */
-typedef std::unique_ptr<htab, htab_deleter> htab_up;
-
extern void init_page_info (void);
/* Temporarily set BATCH_FLAG and the associated unlimited terminal size.
extern void reinitialize_more_filter (void);
-extern int pagination_enabled;
+/* Return the number of characters in a line. */
+
+extern int get_chars_per_line ();
+
+extern bool pagination_enabled;
extern struct ui_file **current_ui_gdb_stdout_ptr (void);
extern struct ui_file **current_ui_gdb_stdin_ptr (void);
extern struct ui_file **current_ui_gdb_stderr_ptr (void);
extern struct ui_file **current_ui_gdb_stdlog_ptr (void);
+/* Flush STREAM. This is a wrapper for ui_file_flush that also
+ flushes any output pending from uses of the *_filtered output
+ functions; that output is kept in a special buffer so that
+ pagination and styling are handled properly. */
+extern void gdb_flush (struct ui_file *);
+
/* The current top level's ui_file streams. */
/* Normal results */
extern void set_screen_width_and_height (int width, int height);
/* More generic printf like operations. Filtered versions may return
- non-locally on error. */
+ non-locally on error. As an extension over plain printf, these
+ support some GDB-specific format specifiers. Particularly useful
+ here are the styling formatters: '%p[', '%p]' and '%ps'. See
+ ui_out::message for details. */
extern void fputs_filtered (const char *, struct ui_file *);
extern void puts_filtered_tabular (char *string, int width, int right);
-extern void puts_debug (char *prefix, char *string, char *suffix);
-
extern void vprintf_filtered (const char *, va_list) ATTRIBUTE_PRINTF (1, 0);
extern void vfprintf_filtered (struct ui_file *, const char *, va_list)
extern void fprintf_filtered (struct ui_file *, const char *, ...)
ATTRIBUTE_PRINTF (2, 3);
-extern void fprintfi_filtered (int, struct ui_file *, const char *, ...)
- ATTRIBUTE_PRINTF (3, 4);
-
extern void printf_filtered (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
-extern void printfi_filtered (int, const char *, ...) ATTRIBUTE_PRINTF (2, 3);
-
extern void vprintf_unfiltered (const char *, va_list) ATTRIBUTE_PRINTF (1, 0);
extern void vfprintf_unfiltered (struct ui_file *, const char *, va_list)
extern void printf_unfiltered (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
-extern void print_spaces (int, struct ui_file *);
-
extern void print_spaces_filtered (int, struct ui_file *);
-extern char *n_spaces (int);
-
-extern void fputstr_filtered (const char *str, int quotr,
- struct ui_file * stream);
-
-extern void fputstr_unfiltered (const char *str, int quotr,
- struct ui_file * stream);
-
-extern void fputstrn_filtered (const char *str, int n, int quotr,
- struct ui_file * stream);
-
-typedef int (*do_fputc_ftype) (int c, ui_file *stream);
-
-extern void fputstrn_unfiltered (const char *str, int n, int quotr,
- do_fputc_ftype do_fputc,
- struct ui_file * stream);
+extern const char *n_spaces (int);
/* Return nonzero if filtered printing is initialized. */
extern int filtered_printing_initialized (void);
...)
ATTRIBUTE_PRINTF (3, 4);
+extern void vfprintf_styled (struct ui_file *stream,
+ const ui_file_style &style,
+ const char *fmt,
+ va_list args)
+ ATTRIBUTE_PRINTF (3, 0);
+
+/* Like vfprintf_styled, but do not process gdb-specific format
+ specifiers. */
+extern void vfprintf_styled_no_gdbfmt (struct ui_file *stream,
+ const ui_file_style &style,
+ bool filter,
+ const char *fmt, va_list args)
+ ATTRIBUTE_PRINTF (4, 0);
+
/* Like fputs_filtered, but styles the output according to STYLE, when
appropriate. */
const ui_file_style &style,
struct ui_file *stream);
+/* Unfiltered variant of fputs_styled. */
+
+extern void fputs_styled_unfiltered (const char *linebuffer,
+ const ui_file_style &style,
+ struct ui_file *stream);
+
/* Like fputs_styled, but uses highlight_style to highlight the
parts of STR that match HIGHLIGHT. */
extern void reset_terminal_style (struct ui_file *stream);
-/* Display the host ADDR on STREAM formatted as ``0x%x''. */
-extern void gdb_print_host_address_1 (const void *addr, struct ui_file *stream);
-
-/* Wrapper that avoids adding a pointless cast to all callers. */
-#define gdb_print_host_address(ADDR, STREAM) \
- gdb_print_host_address_1 ((const void *) ADDR, STREAM)
-
/* Return the address only having significant bits. */
extern CORE_ADDR address_significant (gdbarch *gdbarch, CORE_ADDR addr);
extern const char *print_core_address (struct gdbarch *gdbarch,
CORE_ADDR address);
-/* Callback hash_f and eq_f for htab_create_alloc or htab_create_alloc_ex. */
-extern hashval_t core_addr_hash (const void *ap);
-extern int core_addr_eq (const void *ap, const void *bp);
-
extern CORE_ADDR string_to_core_addr (const char *my_string);
extern void fprintf_symbol_filtered (struct ui_file *, const char *,
\f
/* Misc. utilities. */
-/* Allocation and deallocation functions for the libiberty hash table
- which use obstacks. */
-void *hashtab_obstack_allocate (void *data, size_t size, size_t count);
-void dummy_obstack_deallocate (void *object, void *data);
-
#ifdef HAVE_WAITPID
extern pid_t wait_to_die_with_timeout (pid_t pid, int *status, int timeout);
#endif
extern int myread (int, char *, int);
+/* Integer exponentiation: Return V1**V2, where both arguments
+ are integers.
+
+ Requires V1 != 0 if V2 < 0.
+ Returns 1 for 0 ** 0. */
+extern ULONGEST uinteger_pow (ULONGEST v1, LONGEST v2);
+
/* Resource limits used by getrlimit and setrlimit. */
enum resource_limit_kind
extern void dump_core (void);
-/* Return the hex string form of LENGTH bytes of DATA.
- Space for the result is malloc'd, caller must free. */
-
-extern char *make_hex_string (const gdb_byte *data, size_t length);
-
/* Copy NBITS bits from SOURCE to DEST starting at the given bit
offsets. Use the bit order as specified by BITS_BIG_ENDIAN.
Source and destination buffers must not overlap. */
const gdb_byte *source, ULONGEST source_offset,
ULONGEST nbits, int bits_big_endian);
+/* A fast hashing function. This can be used to hash data in a fast way
+ when the length is known. If no fast hashing library is available, falls
+ back to iterative_hash from libiberty. START_VALUE can be set to
+ continue hashing from a previous value. */
+
+static inline unsigned int
+fast_hash (const void *ptr, size_t len, unsigned int start_value = 0)
+{
+#ifdef HAVE_LIBXXHASH
+ return XXH64 (ptr, len, start_value);
+#else
+ return iterative_hash (ptr, len, start_value);
+#endif
+}
+
#endif /* UTILS_H */