配置GDB以支持查看stl容器数据
转自：http://blog.csdn.net/sunlylorn/article/details/6788768
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GDB的自定义命令非常有用，通过自定义命令，直接操作容器中的数据，可以方便的查看STL容器中的数据。
这个链接dbinit_stl_views是Dan C Marinescu写的查看STL容器的自定义命令（如果不适合你的STL版本的话，可以自行修改）。把它添加到你的.gdbinit中，就可以方便的查看STL容器了。它提供了查看vector，list，map，multimap，set，multiset，deque，stack，queue，priority_queue，bitset，string，widestring等对象的方法，非常好用！
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1. copy如下文本到本地文件dbinit_stl_views-1.03.txt2. #cat?dbinit_stl_views-1.03.txt >>?~/.gdbinit3. 若正处于gdb中，运行命令:(gdb) source ~/.gdbinit使用查看map类型
(gdb) pmap m_channelMap
Map type = std::map<int, codefarm::Channel*, std::less<int>, std::allocator<std::pair<int const, codefarm::Channel*> > >
Use pmap <variable_name> <left_element_type> <right_element_type> to see the elements in the map.
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(gdb) pmap m_channelMap int codefarm::Channel*
elem[0].left: $2 = 3
elem[0].right: $3 = (codefarm::Channel *) 0x60890000000000
elem[1].left: $4 = 4
elem[1].right: $5 = (codefarm::Channel *) 0x608bb000000000
elem[2].left: $6 = 5
elem[2].right: $7 = (codefarm::Channel *) 0x608d7000007fff
Map size = 3
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# # STL GDB evaluators/views/utilities - 1.03## The new GDB commands: # are entirely non instrumental # do not depend on any "inline"(s) - e.g. size(), [], etc# are extremely tolerant to debugger settings# # This file should be "included" in .gdbinit as following:# source stl-views.gdb or just paste it into your .gdbinit file## The following STL containers are currently supported:## std::vector<T> -- via pvector command# std::list<T> -- via plist or plist_member command# std::map<T,T> -- via pmap or pmap_member command# std::multimap<T,T> -- via pmap or pmap_member command# std::set<T> -- via pset command# std::multiset<T> -- via pset command# std::deque<T> -- via pdequeue command# std::stack<T> -- via pstack command# std::queue<T> -- via pqueue command# std::priority_queue<T> -- via ppqueue command# std::bitset<n> -- via pbitset command# std::string -- via pstring command# std::widestring -- via pwstring command## The end of this file contains (optional) C++ beautifiers# Make sure your debugger supports $argc## Simple GDB Macros writen by Dan Marinescu (H-PhD) - License GPL# Inspired by intial work of Tom Malnar, # Tony Novac (PhD) / Cornell / Stanford,# Gilad Mishne (PhD) and Many Many Others.# Contact: dan_c_marinescu@yahoo.com (Subject: STL)## Modified to work with g++ 4.3 by Anders Elton# Also added _member functions, that instead of printing the entire class in map, prints a member.## std::vector<>#define pvectorif $argc == 0help pvectorelseset $size = $arg0._M_impl._M_finish - $arg0._M_impl._M_startset $capacity = $arg0._M_impl._M_end_of_storage - $arg0._M_impl._M_startset $size_max = $size - 1endif $argc == 1set $i = 0while $i < $sizeprintf "elem[%u]: ", $ip *($arg0._M_impl._M_start + $i)set $i++endendif $argc == 2set $idx = $arg1if $idx < 0 || $idx > $size_maxprintf "idx1, idx2 are not in acceptable range: [0..%u].\n", $size_maxelseprintf "elem[%u]: ", $idxp *($arg0._M_impl._M_start + $idx)endendif $argc == 3 set $start_idx = $arg1 set $stop_idx = $arg2 if $start_idx > $stop_idx set $tmp_idx = $start_idx set $start_idx = $stop_idx set $stop_idx = $tmp_idx end if $start_idx < 0 || $stop_idx < 0 || $start_idx > $size_max || $stop_idx > $size_max printf "idx1, idx2 are not in acceptable range: [0..%u].\n", $size_max else set $i = $start_idxwhile $i <= $stop_idxprintf "elem[%u]: ", $ip *($arg0._M_impl._M_start + $i)set $i++end endendif $argc > 0printf "Vector size = %u\n", $sizeprintf "Vector capacity = %u\n", $capacityprintf "Element "whatis $arg0._M_impl._M_startendenddocument pvectorPrints std::vector<T> information.Syntax: pvector <vector> <idx1> <idx2>Note: idx, idx1 and idx2 must be in acceptable range [0..<vector>.size()-1].Examples:pvector v - Prints vector content, size, capacity and T typedefpvector v 0 - Prints element[idx] from vectorpvector v 1 2 - Prints elements in range [idx1..idx2] from vectorend ## std::list<>#define plistif $argc == 0help plistelseset $head = &$arg0._M_impl._M_nodeset $current = $arg0._M_impl._M_node._M_nextset $size = 0while $current != $headif $argc == 2printf "elem[%u]: ", $sizep *($arg1*)($current + 1)endif $argc == 3if $size == $arg2printf "elem[%u]: ", $sizep *($arg1*)($current + 1)endendset $current = $current._M_nextset $size++endprintf "List size = %u \n", $sizeif $argc == 1printf "List "whatis $arg0printf "Use plist <variable_name> <element_type> to see the elements in the list.\n"endendenddocument plistPrints std::list<T> information.Syntax: plist <list> <T> <idx>: Prints list size, if T defined all elements or just element at idxExamples:plist l - prints list size and definitionplist l int - prints all elements and list sizeplist l int 2 - prints the third element in the list (if exists) and list sizeenddefine plist_memberif $argc == 0help plist_memberelseset $head = &$arg0._M_impl._M_nodeset $current = $arg0._M_impl._M_node._M_nextset $size = 0while $current != $headif $argc == 3printf "elem[%u]: ", $sizep (*($arg1*)($current + 1)).$arg2endif $argc == 4if $size == $arg3printf "elem[%u]: ", $sizep (*($arg1*)($current + 1)).$arg2endendset $current = $current._M_nextset $size++endprintf "List size = %u \n", $sizeif $argc == 1printf "List "whatis $arg0printf "Use plist_member <variable_name> <element_type> <member> to see the elements in the list.\n"endendenddocument plist_memberPrints std::list<T> information.Syntax: plist <list> <T> <idx>: Prints list size, if T defined all elements or just element at idxExamples:plist_member l int member - prints all elements and list sizeplist_member l int member 2 - prints the third element in the list (if exists) and list sizeend## std::map and std::multimap#define pmapif $argc == 0help pmapelseset $tree = $arg0set $i = 0set $node = $tree._M_t._M_impl._M_header._M_leftset $end = $tree._M_t._M_impl._M_headerset $tree_size = $tree._M_t._M_impl._M_node_countif $argc == 1printf "Map "whatis $treeprintf "Use pmap <variable_name> <left_element_type> <right_element_type> to see the elements in the map.\n"endif $argc == 3while $i < $tree_sizeset $value = (void *)($node + 1)printf "elem[%u].left: ", $ip *($arg1*)$valueset $value = $value + sizeof($arg1)printf "elem[%u].right: ", $ip *($arg2*)$valueif $node._M_right != 0set $node = $node._M_rightwhile $node._M_left != 0set $node = $node._M_leftendelseset $tmp_node = $node._M_parentwhile $node == $tmp_node._M_rightset $node = $tmp_nodeset $tmp_node = $tmp_node._M_parentendif $node._M_right != $tmp_nodeset $node = $tmp_nodeendendset $i++endendif $argc == 4set $idx = $arg3set $ElementsFound = 0while $i < $tree_sizeset $value = (void *)($node + 1)if *($arg1*)$value == $idxprintf "elem[%u].left: ", $ip *($arg1*)$valueset $value = $value + sizeof($arg1)printf "elem[%u].right: ", $ip *($arg2*)$valueset $ElementsFound++endif $node._M_right != 0set $node = $node._M_rightwhile $node._M_left != 0set $node = $node._M_leftendelseset $tmp_node = $node._M_parentwhile $node == $tmp_node._M_rightset $node = $tmp_nodeset $tmp_node = $tmp_node._M_parentendif $node._M_right != $tmp_nodeset $node = $tmp_nodeendendset $i++endprintf "Number of elements found = %u\n", $ElementsFoundendif $argc == 5set $idx1 = $arg3set $idx2 = $arg4set $ElementsFound = 0while $i < $tree_sizeset $value = (void *)($node + 1)set $valueLeft = *($arg1*)$valueset $valueRight = *($arg2*)($value + sizeof($arg1))if $valueLeft == $idx1 && $valueRight == $idx2printf "elem[%u].left: ", $ip $valueLeftprintf "elem[%u].right: ", $ip $valueRightset $ElementsFound++endif $node._M_right != 0set $node = $node._M_rightwhile $node._M_left != 0set $node = $node._M_leftendelseset $tmp_node = $node._M_parentwhile $node == $tmp_node._M_rightset $node = $tmp_nodeset $tmp_node = $tmp_node._M_parentendif $node._M_right != $tmp_nodeset $node = $tmp_nodeendendset $i++endprintf "Number of elements found = %u\n", $ElementsFoundendprintf "Map size = %u\n", $tree_sizeendenddocument pmapPrints std::map<TLeft and TRight> or std::multimap<TLeft and TRight> information. Works for std::multimap as well.Syntax: pmap <map> <TtypeLeft> <TypeRight> <valLeft> <valRight>: Prints map size, if T defined all elements or just element(s) with val(s)Examples:pmap m - prints map size and definitionpmap m int int - prints all elements and map sizepmap m int int 20 - prints the element(s) with left-value = 20 (if any) and map sizepmap m int int 20 200 - prints the element(s) with left-value = 20 and right-value = 200 (if any) and map sizeenddefine pmap_memberif $argc == 0help pmap_memberelseset $tree = $arg0set $i = 0set $node = $tree._M_t._M_impl._M_header._M_leftset $end = $tree._M_t._M_impl._M_headerset $tree_size = $tree._M_t._M_impl._M_node_countif $argc == 1printf "Map "whatis $treeprintf "Use pmap <variable_name> <left_element_type> <right_element_type> to see the elements in the map.\n"endif $argc == 5while $i < $tree_sizeset $value = (void *)($node + 1)printf "elem[%u].left: ", $ip (*($arg1*)$value).$arg2set $value = $value + sizeof($arg1)printf "elem[%u].right: ", $ip (*($arg3*)$value).$arg4if $node._M_right != 0set $node = $node._M_rightwhile $node._M_left != 0set $node = $node._M_leftendelseset $tmp_node = $node._M_parentwhile $node == $tmp_node._M_rightset $node = $tmp_nodeset $tmp_node = $tmp_node._M_parentendif $node._M_right != $tmp_nodeset $node = $tmp_nodeendendset $i++endendif $argc == 6set $idx = $arg5set $ElementsFound = 0while $i < $tree_sizeset $value = (void *)($node + 1)if *($arg1*)$value == $idxprintf "elem[%u].left: ", $ip (*($arg1*)$value).$arg2set $value = $value + sizeof($arg1)printf "elem[%u].right: ", $ip (*($arg3*)$value).$arg4set $ElementsFound++endif $node._M_right != 0set $node = $node._M_rightwhile $node._M_left != 0set $node = $node._M_leftendelseset $tmp_node = $node._M_parentwhile $node == $tmp_node._M_rightset $node = $tmp_nodeset $tmp_node = $tmp_node._M_parentendif $node._M_right != $tmp_nodeset $node = $tmp_nodeendendset $i++endprintf "Number of elements found = %u\n", $ElementsFoundendprintf "Map size = %u\n", $tree_sizeendenddocument pmap_memberPrints std::map<TLeft and TRight> or std::multimap<TLeft and TRight> information. Works for std::multimap as well.Syntax: pmap <map> <TtypeLeft> <TypeRight> <valLeft> <valRight>: Prints map size, if T defined all elements or just element(s) with val(s)Examples:pmap_member m class1 member1 class2 member2 - prints class1.member1 : class2.member2pmap_member m class1 member1 class2 member2 lvalue - prints class1.member1 : class2.member2 where class1 == lvalueend## std::set and std::multiset#define psetif $argc == 0help psetelseset $tree = $arg0set $i = 0set $node = $tree._M_t._M_impl._M_header._M_leftset $end = $tree._M_t._M_impl._M_headerset $tree_size = $tree._M_t._M_impl._M_node_countif $argc == 1printf "Set "whatis $treeprintf "Use pset <variable_name> <element_type> to see the elements in the set.\n"endif $argc == 2while $i < $tree_sizeset $value = (void *)($node + 1)printf "elem[%u]: ", $ip *($arg1*)$valueif $node._M_right != 0set $node = $node._M_rightwhile $node._M_left != 0set $node = $node._M_leftendelseset $tmp_node = $node._M_parentwhile $node == $tmp_node._M_rightset $node = $tmp_nodeset $tmp_node = $tmp_node._M_parentendif $node._M_right != $tmp_nodeset $node = $tmp_nodeendendset $i++endendif $argc == 3set $idx = $arg2set $ElementsFound = 0while $i < $tree_sizeset $value = (void *)($node + 1)if *($arg1*)$value == $idxprintf "elem[%u]: ", $ip *($arg1*)$valueset $ElementsFound++endif $node._M_right != 0set $node = $node._M_rightwhile $node._M_left != 0set $node = $node._M_leftendelseset $tmp_node = $node._M_parentwhile $node == $tmp_node._M_rightset $node = $tmp_nodeset $tmp_node = $tmp_node._M_parentendif $node._M_right != $tmp_nodeset $node = $tmp_nodeendendset $i++endprintf "Number of elements found = %u\n", $ElementsFoundendprintf "Set size = %u\n", $tree_sizeendenddocument psetPrints std::set<T> or std::multiset<T> information. Works for std::multiset as well.Syntax: pset <set> <T> <val>: Prints set size, if T defined all elements or just element(s) having valExamples:pset s - prints set size and definitionpset s int - prints all elements and the size of spset s int 20 - prints the element(s) with value = 20 (if any) and the size of send## std::dequeue#define pdequeueif $argc == 0help pdequeueelseset $size = 0set $start_cur = $arg0._M_impl._M_start._M_curset $start_last = $arg0._M_impl._M_start._M_lastset $start_stop = $start_lastwhile $start_cur != $start_stopp *$start_curset $start_cur++set $size++endset $finish_first = $arg0._M_impl._M_finish._M_firstset $finish_cur = $arg0._M_impl._M_finish._M_curset $finish_last = $arg0._M_impl._M_finish._M_lastif $finish_cur < $finish_lastset $finish_stop = $finish_curelseset $finish_stop = $finish_lastendwhile $finish_first != $finish_stopp *$finish_firstset $finish_first++set $size++endprintf "Dequeue size = %u\n", $sizeendenddocument pdequeuePrints std::dequeue<T> information.Syntax: pdequeue <dequeue>: Prints dequeue size, if T defined all elementsDeque elements are listed "left to right" (left-most stands for front and right-most stands for back)Example:pdequeue d - prints all elements and size of dend## std::stack#define pstackif $argc == 0help pstackelseset $start_cur = $arg0.c._M_impl._M_start._M_curset $finish_cur = $arg0.c._M_impl._M_finish._M_curset $size = $finish_cur - $start_cur set $i = $size - 1 while $i >= 0 p *($start_cur + $i) set $i-- endprintf "Stack size = %u\n", $sizeendenddocument pstackPrints std::stack<T> information.Syntax: pstack <stack>: Prints all elements and size of the stackStack elements are listed "top to buttom" (top-most element is the first to come on pop)Example:pstack s - prints all elements and the size of send## std::queue#define pqueueif $argc == 0help pqueueelseset $start_cur = $arg0.c._M_impl._M_start._M_curset $finish_cur = $arg0.c._M_impl._M_finish._M_curset $size = $finish_cur - $start_cur set $i = 0 while $i < $size p *($start_cur + $i) set $i++ endprintf "Queue size = %u\n", $sizeendenddocument pqueuePrints std::queue<T> information.Syntax: pqueue <queue>: Prints all elements and the size of the queueQueue elements are listed "top to bottom" (top-most element is the first to come on pop)Example:pqueue q - prints all elements and the size of qend## std::priority_queue#define ppqueueif $argc == 0help ppqueueelseset $size = $arg0.c._M_impl._M_finish - $arg0.c._M_impl._M_startset $capacity = $arg0.c._M_impl._M_end_of_storage - $arg0.c._M_impl._M_startset $i = $size - 1while $i >= 0p *($arg0.c._M_impl._M_start + $i)set $i--endprintf "Priority queue size = %u\n", $sizeprintf "Priority queue capacity = %u\n", $capacityendenddocument ppqueuePrints std::priority_queue<T> information.Syntax: ppqueue <priority_queue>: Prints all elements, size and capacity of the priority_queuePriority_queue elements are listed "top to buttom" (top-most element is the first to come on pop)Example:ppqueue pq - prints all elements, size and capacity of pqend## std::bitset#define pbitsetif $argc == 0help pbitsetelse p /t $arg0._M_wendenddocument pbitsetPrints std::bitset<n> information.Syntax: pbitset <bitset>: Prints all bits in bitsetExample:pbitset b - prints all bits in bend## std::string#define pstringif $argc == 0help pstringelseprintf "String \t\t\t= "%s"\n", $arg0._M_data()printf "String size/length \t= %u\n", $arg0._M_rep()._M_lengthprintf "String capacity \t= %u\n", $arg0._M_rep()._M_capacityprintf "String ref-count \t= %d\n", $arg0._M_rep()._M_refcountendenddocument pstringPrints std::string information.Syntax: pstring <string>Example:pstring s - Prints content, size/length, capacity and ref-count of string send ## std::wstring#define pwstringif $argc == 0help pwstringelsecall printf("WString \t\t= "%ls"\n", $arg0._M_data())printf "WString size/length \t= %u\n", $arg0._M_rep()._M_lengthprintf "WString capacity \t= %u\n", $arg0._M_rep()._M_capacityprintf "WString ref-count \t= %d\n", $arg0._M_rep()._M_refcountendenddocument pwstringPrints std::wstring information.Syntax: pwstring <wstring>Example:pwstring s - Prints content, size/length, capacity and ref-count of wstring send ## C++ related beautifiers (optional)#set print pretty onset print object onset print static-members onset print vtbl onset print demangle onset demangle-style gnu-v3set print sevenbit-strings off