Implement DirName from scratch to avoid dependencies on external libraries.
It's based on MSDN documentation for Naming Files, Paths, and Namespaces.
The algorithm can't simply start from the end and look backwards for the
first separator, because we need to preserve the prefix that represent
the root location. We shouldn't remove anything there. In Windows we
have many different options, like:
\\Server\Share\ , \ , C: , C:\ , \\?\C:\ , \\?\UNC\Server\Share\
We remove the last separator in the rest of the path, if it exists.
It was implemented to have a similar behaviour to dirname() in linux,
removing trailing separators, returning "." when the path doesn't
contain separators, etc.
Differential Revision: https://reviews.llvm.org/D27579
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@289562 91177308-0d34-0410-b5e6-96231b3b80d8
I added a new flag RunningCB to know if the Fuzzer's main thread is
running the CB function, instead of using (!CurrentUnitSize).
(!CurrentUnitSize) doesn't work properly. For example, in FuzzerLoop.cpp,
inside ShuffleAndMinimize() function, we execute the callback with an
empty string (size=0). Previous implementation failed to detect timeouts
in that execution.
Also, I add a regression test for that case.
Differential Revision: https://reviews.llvm.org/D27433
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@289561 91177308-0d34-0410-b5e6-96231b3b80d8
Reorganize #includes to follow LLVM Coding Standards.
Include some missing headers. Required to use `Printf()`.
Aside from that, this patch contains no functional change.
It is purely a re-organization.
Differential Revision: https://reviews.llvm.org/D27363
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@289560 91177308-0d34-0410-b5e6-96231b3b80d8
std:🧵:hardware_concurrency() returns an unsigned, so I modify
NumberOfCpuCores() to return unsigned too.
The number of cpus is used to define the number of workers, so I decided
to update the worker and jobs flags to be declared as unsigned too.
Differential Revision: https://reviews.llvm.org/D27685
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@289559 91177308-0d34-0410-b5e6-96231b3b80d8
Use unsigned for PID instead of signed int. GetCurrentProcessId() returns
an unsigned (DWORD) so we must be sure we can deal with all possible values.
I use a long unsigned to be sure it can hold a 32 bit unsigned (DWORD).
Differential Revision: https://reviews.llvm.org/D27281
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@289558 91177308-0d34-0410-b5e6-96231b3b80d8
Add new flags to FuzzingOptions to represent the different conditions
on the signal handling. These options are passed when calling
SetSignalHandler().
This changes simplify the implementation of Windows's exception
handling. Now we can define a unique handler for all the exceptions.
Differential Revision: https://reviews.llvm.org/D27238
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@289557 91177308-0d34-0410-b5e6-96231b3b80d8
This resubmits r288529, which was resubmitted because it broke a
fuzzer bot. According to kcc@ the test that broke was flakey
and it is unlikely to be a result of this patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@288549 91177308-0d34-0410-b5e6-96231b3b80d8
Windows doesn't really support weak aliases, but with some
linker magic we can get something that's pretty close on
Windows. This introduces an interface to accessing weakly
aliased symbols that will work on any platform. Linker
magic changes to come in a separate patch.
Patch by Marcos Pividori
Differential Revision: https://reviews.llvm.org/D27235
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@288530 91177308-0d34-0410-b5e6-96231b3b80d8
This patch moves some posix specific file i/o code into a new
file, FuzzerIOPosix.cpp, and provides implementations for these
functions on Windows in FuzzerIOWindows.cpp. This is another
incremental step towards getting libfuzzer working on Windows,
although it still should not be expected to be fully working.
Patch by Marcos Pividori
Differential Revision: https://reviews.llvm.org/D27233
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@288275 91177308-0d34-0410-b5e6-96231b3b80d8
In an effort to get libfuzzer working on Windows, we need to make
a distinction between what functions require platform specific
code (e.g. different code on Windows vs Linux) and what code
doesn't. IO functions, for example, tend to be platform
specific.
This patch separates out some of the functions which will need
to have platform specific implementations into different headers,
so that we can then provide different implementations for each
platform.
Aside from that, this patch contains no functional change. It
is purely a re-organization.
Patch by Marcos Pividori
Differential Revision: https://reviews.llvm.org/D27230
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@288264 91177308-0d34-0410-b5e6-96231b3b80d8
