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Andrew Burgess c2512106f8 gdb/mi: Add -max-results parameter to some -symbol-info-* commands
Adds a new parameter -max-results to -symbol-info-functions,
-symbol-info-variables, -symbol-info-types, and -symbol-info-modules.
This parameter limits the number of results returned.

This change still leaves -symbol-info-module-functions and
-symbol-info-module-variables always returning all results, fixing
these commands is slightly harder.

There's currently no mechanism for the user of these commands to know
if the result list has been truncated if you get back the maximum
number of results, so if there are exactly 10 functions and you call
'-symbol-info-functions --max-results 10' the reply would appear no
different than if you had 20 functions and called with a max of 10.
Right now, if you get back the maximum then you should assume that
there might be more results available.

One other thing to note is that the global_symbol_searcher::search by
default returns SIZE_MAX results, there's no longer a mechanism to
return an unlimited number of results, though hopefully this will not
be a huge issue.

gdb/ChangeLog:

	* mi/mi-symbol-cmds.c (mi_symbol_info): Take extra parameter, and
	add it into the search spec.
	(parse_max_results_option): New function.
	(mi_info_functions_or_variables): Parse -max-results flag and pass
	it to mi_symbol_info.
	(mi_cmd_symbol_info_modules): Likewise.
	(mi_cmd_symbol_info_types): Likewise.
	* symtab.c (global_symbol_searcher::add_matching_symbols): Change
	return type to bool, change result container into a set, and don't
	add new results if we have enough already.
	(global_symbol_searcher::add_matching_msymbols): Change return
	type to bool, and don't add new results if we have enough already.
	(sort_search_symbols_remove_dups): Delete.
	(global_symbol_searcher::search): Early exit from search loop when
	we have enough results.  Use a std::set to collect the results
	from calling add_matching_symbols.
	* symtab.h (global_symbol_searcher) <set_max_seach_results>: New
	member function.
	(global_symbol_searcher) <m_max_search_results>: New member
	variable.
	(global_symbol_searcher) <add_matching_symbols>: Update header
	comment and change return type to bool.
	(global_symbol_searcher) <add_matching_msymbols>: Update header
	comment and change return type to bool.

gdb/doc/ChangeLog:

	* doc/gdb.texinfo (GDB/MI Symbol Query): Add documentation of
	-max-results to some -symbol-info-* commands.

gdb/testsuite/ChangeLog:

	* gdb.mi/mi-sym-info.exp: Add tests for -max-results parameter.

Change-Id: I90a28feb55b388fb46461a096c5db08b6b0bd427
2019-12-04 10:25:13 +00:00
bfd Automatic date update in version.in 2019-12-04 00:00:50 +00:00
binutils binutils/gas/riscv: Add DWARF register numbers for CSRs 2019-11-28 00:03:05 +00:00
config
contrib
cpu cpu: fix comment in bpf.cpu 2019-11-20 10:16:24 +01:00
elfcpp
etc
gas x86-64: accept 64-bit LFS/LGS/LSS forms with suffix or operand size specifier 2019-12-04 10:45:17 +01:00
gdb gdb/mi: Add -max-results parameter to some -symbol-info-* commands 2019-12-04 10:25:13 +00:00
gnulib Add no-dist to gnulib configure 2019-11-15 13:48:27 -07:00
gold Introduce new .text.sorted.* sections. 2019-11-26 17:20:10 +01:00
gprof Revert previous delta. 2019-11-15 11:52:50 +00:00
include Introduce new section flag: SEC_ELF_OCTETS 2019-11-25 14:32:19 +10:30
intl
ld gas/riscv: Produce version 3 DWARF CIE by default 2019-11-28 00:03:05 +00:00
libctf
libdecnumber
libiberty
opcodes x86-64: accept 64-bit LFS/LGS/LSS forms with suffix or operand size specifier 2019-12-04 10:45:17 +01:00
readline Minor updates to readline configury 2019-11-15 13:46:54 -07:00
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