"Screen shot"
code example
Dout(dc::notice|error_cf, "Hello World");
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<- margin ->
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NOTICE
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<- marker ->
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<- indentation ->
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Hello World : error string <new-line>
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output example
NOTICE : Entering exec_prog()
SYSTEM : pipe([3, 4]) = 0
SYSTEM : pipe([5, 6]) = 0
child MALLOC : operator new (size = 24) = <unfinished>
child BFD : Loading debug symbols from /home/carlo/c++/bfd/bfd... done
SYSTEM : fork() = 13078 [parent process]
SYSTEM : close(4) = 0
SYSTEM : close(6) = 0
child BFD : Loading debug symbols from /home/carlo/c++/libcw/lib/libcwd.so.0 (40013000) ... done
child BFD : Loading debug symbols from /usr/lib/libstdc++-libc6.1-2.so.3 (40057000) ... done
child BFD : Loading debug symbols from /lib/libm.so.6 (4009e000) ... done
child BFD : Loading debug symbols from /lib/libc.so.6 (400ba000) ... done
child BFD : Loading debug symbols from /usr/lib/libbfd-2.9.5.0.14.so (401ad000) ... done
child BFD : Loading debug symbols from /lib/ld-linux.so.2 (40000000) ... done
child BFD : 0x40082003 is at (streambuf.cc:211)
child MALLOC : <continued> 0x8053a68
SYSTEM : poll( [ { 3, POLLIN, 0 }, { 5, POLLIN, 0 }, { 7, POLLIN, POLLIN } ], 3, -1) = 1
child SYSTEM : fork() = 0 [child process]
child SYSTEM : close(3) = 0
child SYSTEM : close(5) = 0
child SYSTEM : close(1) = 0
child SYSTEM : close(2) = 0
child SYSTEM : dup2(4, 1) = 1
child SYSTEM : dup2(6, 2) = 2
child SYSTEM : close(4) = 0
SYSTEM : poll( [ { 3, POLLIN, POLLIN }, { 5, POLLIN, 0 }, { 7, POLLIN, 0 } ], 3, -1) = 1
SYSTEM : read(3, "\t", 128) = 1
SYSTEM : read(3, "libcwd.so.0", 128) = 11
SYSTEM : read(3, " => ", 128) = 4
SYSTEM : read(3, "/usr/lib/libcwd.so.0", 128) = 20
SYSTEM : read(3, " (0x", 128) = 4
SYSTEM : read(3, "40018000", 128) = 8
SYSTEM : read(3, ")\n", 128) = 2
NOTICE : child process stdout: "\tlibcwd.so.0 => /usr/lib/libcwd.so.0 (0x40018000)\n"
code example
template<typename T>
B<T>::~B(void)
{
Dout(dc::notice, "Calling the destructor of " <<
libcwd::type_info_of(*this).demangled_name() << " (this == " << this << ")");
libcwd::alloc_ct const* alloc = libcwd::find_alloc(this);
if (sizeof(*this) != alloc->size())
{
Debug(dc::malloc.off());
Debug(libcw_do.push_marker());
Debug(libcw_do.marker().assign(": | "));
Dout(dc::notice, "This is a base class of an object starting at " << alloc->start());
Dout(dc::notice, "The type of the pointer to the allocated object is " <<
alloc->type_info().demangled_name());
Debug(libcw_do.marker().assign(": ` "));
Dout(dc::notice, "The destructor was called from " << location_ct(builtin_return_address(0)));
Debug(dc::malloc.on());
Debug(libcw_do.pop_marker());
}
}
(Click here to download/view the complete program.)
output
MALLOC : operator new (size = 4) = 0x80584d0 [screenshot.cc:56]
NOTICE : b is 0x80584d0
MALLOC : operator new (size = 12) = 0x8100fa0 [screenshot.cc:60]
NOTICE : c is 0x8100fa0
NOTICE : Calling the destructor of B<int> (this == 0x80584d0)
MALLOC : delete 0x80584d0 screenshot.cc:56 B<int>; (sz = 4) object `b'
NOTICE : Calling the destructor of B<B<char> > (this == 0x8100fa4)
NOTICE : | This is a base class of an object starting at 0x8100fa0
NOTICE : | The type of the pointer to the allocated object is C<double, B<char> >*
NOTICE : ` The destructor was called from screenshot.cc:65
MALLOC : delete 0x8100fa0 screenshot.cc:60 C<double, B<char> >; (sz = 12) object `c'
Another output example
MALLOC : malloc(10) = <unfinished>
WARNING : Object file /lib/ld-linux.so.2 does not have debug info. Address lookups inside this object file will result in a function name only, not a source file location.
MALLOC : <continued> 0x8125978 [ld-linux.so.2:open_path]
MALLOC : calloc(586, 1) = 0x8124f10 [ld-linux.so.2:_dl_new_object]
MALLOC : realloc(0x0, 138) = 0x8125170 [ld-linux.so.2:_dl_new_object]
MALLOC : malloc(52) = 0x8110fa0 [ld-linux.so.2:_dl_map_object_deps]
MALLOC : calloc(8, 16) = 0x8052c98 [ld-linux.so.2:_dl_check_map_versions]
MALLOC : malloc(68) = <unfinished>
WARNING : Object file /lib/tls/libc.so.6 does not have debug info. Address lookups inside this object file will result in a function name only, not a source file location.
MALLOC : <continued> 0x80569e0 [libc.so.6:dl_open_worker]
BFD : Loading debug symbols from module.so (0x40424000) ... done (179 symbols)
MALLOC : malloc(310) = <unfinished>
BFD : Loading debug info from module.so... done
BFD : address 0x4042bc90 corresponds to module.cc:24
MALLOC : <continued> 0x81ab7b0 [module.cc:24]
MALLOC : malloc(300) = <unfinished>
BFD : address 0x4042ba86 corresponds to module.cc:13
MALLOC : <continued> 0x81ab8f8 [module.cc:13]
MALLOC : Allocated memory: 1592 bytes in 8 blocks.
malloc 0x81ab8f8 module.cc:13 void*; (sz = 300) Allocated inside static_test_symbol
malloc 0x81ab7b0 module.cc:24 void*; (sz = 310) Allocated inside global_test_symbol
malloc 0x80569e0 dl_open_worker <unknown type>; (sz = 68)
malloc 0x8052c98 _dl_check_map_versions <unknown type>; (sz = 128)
malloc 0x8110fa0 _dl_map_object_deps <unknown type>; (sz = 52)
realloc 0x8125170 _dl_new_object <unknown type>; (sz = 138)
malloc 0x8124f10 _dl_new_object <unknown type>; (sz = 586)
malloc 0x8125978 open_path <unknown type>; (sz = 10)
MALLOC : free(0x81ab7b0) module.cc:24 void*; (sz = 310) Allocated inside global_test_symbol
MALLOC : free(0x81ab8f8) module.cc:13 void*; (sz = 300) Allocated inside static_test_symbol
MALLOC : free(0x8052c98) _dl_check_map_versions <unknown type>; (sz = 128)
MALLOC : free(0x8125170) _dl_new_object <unknown type>; (sz = 138)
MALLOC : free(0x8125978) open_path <unknown type>; (sz = 10)
MALLOC : Trying to free NULL - ignored.
MALLOC : Trying to free NULL - ignored.
MALLOC : free(0x8124f10) _dl_new_object <unknown type>; (sz = 586)
MALLOC : free(0x8110fa0) _dl_map_object_deps <unknown type>; (sz = 52)
NOTICE : Finished
