From d321477b39b44f2b55834ceae7911563d9f5db15 Mon Sep 17 00:00:00 2001 From: Philippe Waroquiers Date: Sun, 1 Jul 2018 23:02:14 +0200 Subject: [PATCH] Document changes to info [args|functions|locals|variables] Document changes to info [args|functions|locals|variables] gdb/doc/ChangeLog 2018-10-27 Philippe Waroquiers * gdb.texinfo (Information About a Frame): Document changes to 'info args' and 'info locals'. (Examining the Symbol Table): Document changes to 'info functions' and 'info variables'. --- gdb/doc/ChangeLog | 7 +++ gdb/doc/gdb.texinfo | 125 +++++++++++++++++++++++++++++++++++++++----- 2 files changed, 120 insertions(+), 12 deletions(-) diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog index abcdbda5d49..8804e81ffad 100644 --- a/gdb/doc/ChangeLog +++ b/gdb/doc/ChangeLog @@ -1,3 +1,10 @@ +2018-10-27 Philippe Waroquiers + + * gdb.texinfo (Information About a Frame): Document changes + to 'info args' and 'info locals'. + (Examining the Symbol Table): Document changes to 'info functions' + and 'info variables'. + 2018-10-26 Pedro Franco de Carvalho * gdb.texinfo (PowerPC Features): Describe new features diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo index c49a7745f84..8c1e6189732 100644 --- a/gdb/doc/gdb.texinfo +++ b/gdb/doc/gdb.texinfo @@ -7830,15 +7830,75 @@ same as for the @command{frame} command (@pxref{Selection, ,Selecting a Frame}). The selected frame remains unchanged by this command. @kindex info args -@item info args +@item info args [-q] Print the arguments of the selected frame, each on a separate line. -@item info locals +The optional flag @samp{-q}, which stands for @samp{quiet}, disables +printing header information and messages explaining why no argument +have been printed. + +@item info args [-q] [-t @var{type_regexp}] [@var{regexp}] +Like @kbd{info args}, but only print the arguments selected +with the provided regexp(s). + +If @var{regexp} is provided, print only the arguments whose names +match the regular expression @var{regexp}. + +If @var{type_regexp} is provided, print only the arguments whose +types, as printed by the @code{whatis} command, match +the regular expression @var{type_regexp}. +If @var{type_regexp} contains space(s), it should be enclosed in +quote characters. If needed, use backslash to escape the meaning +of special characters or quotes. + +If both @var{regexp} and @var{type_regexp} are provided, an argument +is printed only if its name matches @var{regexp} and its type matches +@var{type_regexp}. + +@item info locals [-q] @kindex info locals Print the local variables of the selected frame, each on a separate line. These are all variables (declared either static or automatic) accessible at the point of execution of the selected frame. +The optional flag @samp{-q}, which stands for @samp{quiet}, disables +printing header information and messages explaining why no local variables +have been printed. + +@item info locals [-q] [-t @var{type_regexp}] [@var{regexp}] +Like @kbd{info locals}, but only print the local variables selected +with the provided regexp(s). + +If @var{regexp} is provided, print only the local variables whose names +match the regular expression @var{regexp}. + +If @var{type_regexp} is provided, print only the local variables whose +types, as printed by the @code{whatis} command, match +the regular expression @var{type_regexp}. +If @var{type_regexp} contains space(s), it should be enclosed in +quote characters. If needed, use backslash to escape the meaning +of special characters or quotes. + +If both @var{regexp} and @var{type_regexp} are provided, a local variable +is printed only if its name matches @var{regexp} and its type matches +@var{type_regexp}. + +The command @kbd{info locals -q -t @var{type_regexp}} can usefully be +combined with the commands @kbd{frame apply} and @kbd{thread apply}. +For example, your program might use Resource Acquisition Is +Initialization types (RAII) such as @code{lock_something_t}: each +local variable of type @code{lock_something_t} automatically places a +lock that is destroyed when the variable goes out of scope. You can +then list all acquired locks in your program by doing +@smallexample +thread apply all -s frame apply all -s info locals -q -t lock_something_t +@end smallexample +@noindent +or the equivalent shorter form +@smallexample +tfaas i lo -q -t lock_something_t +@end smallexample + @end table @node Frame Apply @@ -17920,32 +17980,73 @@ debugging information, organized into two lists: files whose symbols have already been read, and files whose symbols will be read when needed. @kindex info functions -@item info functions +@item info functions [-q] Print the names and data types of all defined functions. Similarly to @samp{info types}, this command groups its output by source files and annotates each function definition with its source line number. -@item info functions @var{regexp} -Like @samp{info functions}, but only print the names and data types of -functions whose names contain a match for regular expression -@var{regexp}. Thus, @samp{info fun step} finds all functions whose +The optional flag @samp{-q}, which stands for @samp{quiet}, disables +printing header information and messages explaining why no functions +have been printed. + +@item info functions [-q] [-t @var{type_regexp}] [@var{regexp}] +Like @samp{info functions}, but only print the names and data types +of the functions selected with the provided regexp(s). + +If @var{regexp} is provided, print only the functions whose names +match the regular expression @var{regexp}. +Thus, @samp{info fun step} finds all functions whose names include @code{step}; @samp{info fun ^step} finds those whose names start with @code{step}. If a function name contains characters that conflict with the regular expression language (e.g.@: @samp{operator*()}), they may be quoted with a backslash. +If @var{type_regexp} is provided, print only the functions whose +types, as printed by the @code{whatis} command, match +the regular expression @var{type_regexp}. +If @var{type_regexp} contains space(s), it should be enclosed in +quote characters. If needed, use backslash to escape the meaning +of special characters or quotes. +Thus, @samp{info fun -t '^int ('} finds the functions that return +an integer; @samp{info fun -t '(.*int.*'} finds the functions that +have an argument type containing int; @samp{info fun -t '^int (' ^step} +finds the functions whose names start with @code{step} and that return +int. + +If both @var{regexp} and @var{type_regexp} are provided, a function +is printed only if its name matches @var{regexp} and its type matches +@var{type_regexp}. + + @kindex info variables -@item info variables +@item info variables [-q] Print the names and data types of all variables that are defined outside of functions (i.e.@: excluding local variables). The printed variables are grouped by source files and annotated with their respective source line numbers. -@item info variables @var{regexp} -Like @kbd{info variables}, but only print the names and data types of -non-local variables whose names contain a match for regular expression -@var{regexp}. +The optional flag @samp{-q}, which stands for @samp{quiet}, disables +printing header information and messages explaining why no variables +have been printed. + +@item info variables [-q] [-t @var{type_regexp}] [@var{regexp}] +Like @kbd{info variables}, but only print the variables selected +with the provided regexp(s). + +If @var{regexp} is provided, print only the variables whose names +match the regular expression @var{regexp}. + +If @var{type_regexp} is provided, print only the variables whose +types, as printed by the @code{whatis} command, match +the regular expression @var{type_regexp}. +If @var{type_regexp} contains space(s), it should be enclosed in +quote characters. If needed, use backslash to escape the meaning +of special characters or quotes. + +If both @var{regexp} and @var{type_regexp} are provided, an argument +is printed only if its name matches @var{regexp} and its type matches +@var{type_regexp}. @kindex info classes @cindex Objective-C, classes and selectors -- 2.30.2