Fri Apr 13 14:50:51 2007 Google Inc. <opensource@google.com>

	* google-perftools: version 0.90 release
	* (As the version-number jump hints, this is a major new release:
	  almost every piece of functionality was rewritten.  I can't do
	  justice to all the changes, but will concentrate on highlights.)
	*** USER-VISIBLE CHANGES:
	* Ability to "release" unused memory added to tcmalloc
	* Exposed more tweaking knobs via environment variables (see docs)
	* pprof tries harder to map addresses to functions
	* tcmalloc_minimal compiles and runs on FreeBSD 6.0 and Solaris 10
	*** INTERNAL CHANGES:
	* Much better 64-bit support
	* Better multiple-processor support (e.g. multicore contention tweaks)
	* Support for recent kernel ABI changes (e.g. new arg to mremap)
	* Addition of spinlocks to tcmalloc to reduce contention cost
	* Speed up tcmalloc by using __thread on systems that support TLS
	* Total redesign of heap-checker to improve liveness checking
	* More portable stack-frame analysis -- no more hard-coded constants!
	* Disentangled heap-profiler code and heap-checker code
	* Several new unittests to test, e.g., thread-contention costs
	* Lots of small (but important!) bug fixes: e.g., fixing GetPC on amd64
	*** KNOWN PROBLEMS:
	* CPU-profiling may crash on x86_64 (64-bit) systems.  See the README
	* Profiling/heap-checking may deadlock on x86_64 systems.  See README


git-svn-id: http://gperftools.googlecode.com/svn/trunk@28 6b5cf1ce-ec42-a296-1ba9-69fdba395a50

1 files changed, 7 insertions, 7 deletions

diff --git a/TODO b/TODO
index 929f802..9a6457e 100644
--- a/TODO
+++ b/TODO
@@ -8,8 +8,7 @@ HEAP PROFILER
      see object-level leaks.
 2) Remove dependency on tcmalloc?
 3) Port to non-linux O/Ses (right now code uses /proc for library info)
-4) Port to non-x86 architectures (locking code in internal_spinlock is
-   x86-specific)
+4) Port to non-x86 architectures (locking code in spinlock is x86-specific)
 5) Port to C?
 6) Figure out how to get setenv() to work properly before main() in
    shared libaries, and get rid of the profile-naming hack once we
@@ -18,11 +17,9 @@ HEAP PROFILER
 
 HEAP CHECKER
 
-[1) Uses heap profiler, so its TODOs apply here as well]
-2) Remove requirement that the heap-checker must be linked last into
+1) Remove requirement that the heap-checker must be linked last into
    an application (hard! -- it needs its global constructor to run
    first)
-3) Improve heap_checker.html documentation.
 
 TCMALLOC
 
@@ -32,12 +29,15 @@ TCMALLOC
 3) Return memory to the system when requirements drop
 4) Explore coloring allocated objects to avoid cache conflicts
 5) Explore biasing reclamation to larger addresses
+6) Add contention stats to a synchronization.cc (can do spinlocks,
+   but threads? -- may have to provide our own thread implementation)
 
 CPU PROFILER
 
 1) Figure out how to get setenv() to work properly before main() in
    shared libaries(), and get rid of the profile-naming hack once we
-   do.  (See ProfileData::ProfileData().)
+   do.  (See Profiler::GetUniquePathFromEnv().)
+2) Resolve crashing problems on x86_64 (see README)
 
 STACKTRACE
 
@@ -45,4 +45,4 @@ STACKTRACE
 2) Remove dependency on linux/x86
 
 ---
-20 May 2005
+4 April 2007