You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
119 lines
5.4 KiB
119 lines
5.4 KiB
![]()
4 years ago
|
--- COMPILING
|
||
|
|
||
|
This project has begun being ported to Windows. A working solution
|
||
|
file exists in this directory:
|
||
|
gperftools.sln
|
||
|
|
||
|
You can load this solution file into VC++ 7.1 (Visual Studio 2003) or
|
||
|
later -- in the latter case, it will automatically convert the files
|
||
|
to the latest format for you.
|
||
|
|
||
|
When you build the solution, it will create a number of unittests,
|
||
|
which you can run by hand (or, more easily, under the Visual Studio
|
||
|
debugger) to make sure everything is working properly on your system.
|
||
|
The binaries will end up in a directory called "debug" or "release" in
|
||
|
the top-level directory (next to the .sln file). It will also create
|
||
|
two binaries, nm-pdb and addr2line-pdb, which you should install in
|
||
|
the same directory you install the 'pprof' perl script.
|
||
|
|
||
|
I don't know very much about how to install DLLs on Windows, so you'll
|
||
|
have to figure out that part for yourself. If you choose to just
|
||
|
re-use the existing .sln, make sure you set the IncludeDir's
|
||
|
appropriately! Look at the properties for libtcmalloc_minimal.dll.
|
||
|
|
||
|
Note that these systems are set to build in Debug mode by default.
|
||
|
You may want to change them to Release mode.
|
||
|
|
||
|
To use tcmalloc_minimal in your own projects, you should only need to
|
||
|
build the dll and install it someplace, so you can link it into
|
||
|
further binaries. To use the dll, you need to add the following to
|
||
|
the linker line of your executable:
|
||
|
"libtcmalloc_minimal.lib" /INCLUDE:"__tcmalloc"
|
||
|
|
||
|
Here is how to accomplish this in Visual Studio 2005 (VC8):
|
||
|
|
||
|
1) Have your executable depend on the tcmalloc library by selecting
|
||
|
"Project Dependencies..." from the "Project" menu. Your executable
|
||
|
should depend on "libtcmalloc_minimal".
|
||
|
|
||
|
2) Have your executable depend on a tcmalloc symbol -- this is
|
||
|
necessary so the linker doesn't "optimize out" the libtcmalloc
|
||
|
dependency -- by right-clicking on your executable's project (in
|
||
|
the solution explorer), selecting Properties from the pull-down
|
||
|
menu, then selecting "Configuration Properties" -> "Linker" ->
|
||
|
"Input". Then, in the "Force Symbol References" field, enter the
|
||
|
text "__tcmalloc" (without the quotes). Be sure to do this for both
|
||
|
debug and release modes!
|
||
|
|
||
|
You can also link tcmalloc code in statically -- see the example
|
||
|
project tcmalloc_minimal_unittest-static, which does this. For this
|
||
|
to work, you'll need to add "/D PERFTOOLS_DLL_DECL=" to the compile
|
||
|
line of every perftools .cc file. You do not need to depend on the
|
||
|
tcmalloc symbol in this case (that is, you don't need to do either
|
||
|
step 1 or step 2 from above).
|
||
|
|
||
|
An alternative to all the above is to statically link your application
|
||
|
with libc, and then replace its malloc with tcmalloc. This allows you
|
||
|
to just build and link your program normally; the tcmalloc support
|
||
|
comes in a post-processing step. This is more reliable than the above
|
||
|
technique (which depends on run-time patching, which is inherently
|
||
|
fragile), though more work to set up. For details, see
|
||
|
https://groups.google.com/group/google-perftools/browse_thread/thread/41cd3710af85e57b
|
||
|
|
||
|
|
||
|
--- THE HEAP-PROFILER
|
||
|
|
||
|
The heap-profiler has had a preliminary port to Windows. It has not
|
||
|
been well tested, and probably does not work at all when Frame Pointer
|
||
|
Optimization (FPO) is enabled -- that is, in release mode. The other
|
||
|
features of perftools, such as the cpu-profiler and leak-checker, have
|
||
|
not yet been ported to Windows at all.
|
||
|
|
||
|
|
||
|
--- WIN64
|
||
|
|
||
|
The function-patcher has to disassemble code, and is very
|
||
|
x86-specific. However, the rest of perftools should work fine for
|
||
|
both x86 and x64. In particular, if you use the 'statically link with
|
||
|
libc, and replace its malloc with tcmalloc' approach, mentioned above,
|
||
|
it should be possible to use tcmalloc with 64-bit windows.
|
||
|
|
||
|
As of perftools 1.10, there is some support for disassembling x86_64
|
||
|
instructions, for work with win64. This work is preliminary, but the
|
||
|
test file preamble_patcher_test.cc is provided to play around with
|
||
|
that a bit. preamble_patcher_test will not compile on win32.
|
||
|
|
||
|
|
||
|
--- ISSUES
|
||
|
|
||
|
NOTE FOR WIN2K USERS: According to reports
|
||
|
(http://code.google.com/p/gperftools/issues/detail?id=127)
|
||
|
the stack-tracing necessary for the heap-profiler does not work on
|
||
|
Win2K. The best workaround is, if you are building on a Win2k system
|
||
|
is to add "/D NO_TCMALLOC_SAMPLES=" to your build, to turn off the
|
||
|
stack-tracing. You will not be able to use the heap-profiler if you
|
||
|
do this.
|
||
|
|
||
|
NOTE ON _MSIZE and _RECALLOC: The tcmalloc version of _msize returns
|
||
|
the size of the region tcmalloc allocated for you -- which is at least
|
||
|
as many bytes you asked for, but may be more. (btw, these *are* bytes
|
||
|
you own, even if you didn't ask for all of them, so it's correct code
|
||
|
to access all of them if you want.) Unfortunately, the Windows CRT
|
||
|
_recalloc() routine assumes that _msize returns exactly as many bytes
|
||
|
as were requested. As a result, _recalloc() may not zero out new
|
||
|
bytes correctly. IT'S SAFEST NOT TO USE _RECALLOC WITH TCMALLOC.
|
||
|
_recalloc() is a tricky routine to use in any case (it's not safe to
|
||
|
use with realloc, for instance).
|
||
|
|
||
|
|
||
|
I have little experience with Windows programming, so there may be
|
||
|
better ways to set this up than I've done! If you run across any
|
||
|
problems, please post to the google-perftools Google Group, or report
|
||
|
them on the gperftools Google Code site:
|
||
|
http://groups.google.com/group/google-perftools
|
||
|
http://code.google.com/p/gperftools/issues/list
|
||
|
|
||
|
-- craig
|
||
|
|
||
|
Last modified: 2 February 2012
|