different error kinds were reusing the same struct for storing their
details. Each one used some but not all the fields, and the AddrInfo was
similar, and it was very confusing.
So I changed MC_Error and AddrInfo to be tagged unions, like Vex's IRExpr and
IRStmt types. The resulting code is a little more verbose but much easier
to understand. I also split up several error kinds, which also made things
simpler. The user-visible behaviour is identical except for a couple of
very minor things that I've documented in the NEWS file for the 3.3.0
release.
Ideally I'd get rid of the Addr and Char* fields in the core Error type,
which are not always used, and do them similarly within tools. But that
would require changing the core/tool interface, so I'm leaving it for the
moment.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@6402
Mostly commented out the unused stuff relating to ThreadErrs and MutexErrs,
which no longer exist.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@6399
Memcheck, replacing the 9-bits-per-byte shadow memory representation to a
2-bits-per-byte representation (with possibly a little more on the side) by
taking advantage of the fact that extremely few memory bytes are partially
defined.
For the SPEC2k benchmarks with "test" inputs, this speeds up Memcheck by a
(geometric mean) factor of 1.20, and reduces the size of shadow memory by a
(geometric mean) factor of 4.26.
At the same time, Addrcheck is removed. It hadn't worked for quite some
time, and with these improvements in Memcheck its raisons-d'etre have
shrivelled so much that it's not worth the effort to keep around. Hooray!
Nb: this code hasn't been tested on PPC. If things go wrong, look first in
the fast stack-handling functions (eg. mc_new_mem_stack_160,
MC_(helperc_MAKE_STACK_UNINIT)).
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@5791
overhaul of the thread support. Many things are now probably broken,
but at least with --tool=none, simple and not-so-simple threaded and
non-thread programs work.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@3265
threads to have thread-private data which is quickly accessible via a
segment in the GDT, stored in %gs. The patch implements the relevent
syscalls (setthreadarea), and also manages switching the VCPU's segment
information at thread context-switch time. Mostly Tom Hughes' work.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@2215
choosing the longest symbol, choose the longest ignoring any of the libc
junk prefixes like __libc_, __, __GI_*, etc. This makes the symbol
presented to the user in messages and used in *.supp files more consistent
and comprehensible.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@2114
the places that normal users will see:
- command line: --tool=foo (although --skin=foo still works)
- docs: removed all traces (included renaming coregrind_skins.html to
coregrind_tools.html)
- in the usage messages
- in error messages
Also did in in some places that I judged were unlikely to cause clashes with
existing workspaces:
- in the header comments of many files (eg. "This file is part of Memcheck, a
Valgrind tool for...")
- in the regtests script
- in the .supp files
- in AUTHORS
- in README_MISSING_SYSCALL_OR_IOCTL
Also update the AUTHORS file to mention Jeremy.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@2027
